Battery Simulator System Overview - DMC, Inc. Papers/NASA... · 2019-09-12 · f or R2/MRV Conf igurat ions Mast er-Slave Connect or Cable Harness Mast er-Slave Connect or DMC Bat

DMC Chicago • 2222 N. Elston Avenue Suite 200 • Chicago, IL 60614 • 312.255.8757

DMC Boston • 20 Holland St. Suite 408 • Somerville, MA 02144 • 617.758.8517

DMC Denver • 1860 Blake St. Suite 410 • Denver, CO 80202 • 303.223.1801

www.dmcinfo.com • [email protected] • 888.DMC.4400

Page 1 of 21

Battery Simulator System Overview

CONTENTS

SYSTEM INTRODUCTION ................................................................................................................................................................................................. 2

SYSTEM DETAILS ................................................................................................................................................................................................................. 2

DEFINITIONS .................................................................................................................................................................................................................... 2

OVERVIEW OF HARDWARE SYSTEM ....................................................................................................................................................................... 3

SYSTEM ENCLOSURE ....................................................................................................................................................................................................4

CONTROLLER PC AND ACCESSORIES ....................................................................................................................................................................4

BATTERY STACK SIMULATION ................................................................................................................................................................................... 6

CELL VOLTAGE / CURRENT MEASUREMENT MODULE (OPTIONAL) ............................................................................................................ 8

BATTERY STACK SIMULATOR CONNECTIONS .................................................................................................................................................... 11

TEMPERATURE SENSOR SIMULATION MODULE ............................................................................................................................................... 12

PXI CHASSIS TO CONTROLLER INTERFACE ........................................................................................................................................................ 16

SOFTWARE DRIVER LIBRARIES FOR SYSTEM CONTROL ................................................................................................................................. 16

SAFETY / INTERLOCK FUNCTIONS ......................................................................................................................................................................... 17

NATIONAL INSTRUMENTS / LABVIEW EXPERIENCE ........................................................................................................................................ 20

TEST AND MEASUREMENT EXPERIENCE ............................................................................................................................................................. 20

RELATED PAST AND CURRENT PROJECTS .......................................................................................................................................................... 21

http://www.dmcinfo.com/

mailto:[email protected]





Page 2 of 21


SYSTEM INTRODUCTION

The Battery Simulator System leverages the DMC Battery Testing Platform hardware and software. DMC’s modular Battery Testing

Platform incorporates open software and hardware technologies, along with flexible and reliable subsystem components and

instruments, which are completely customized to the end user’s specifications.

The Battery Testing Platform is built around high-quality off-the-shelf hardware assembled from a variety of vendors, including

Pickering Interfaces, National Instruments (NI), Lambda, and Agilent, among others. Selection of individual instruments in the DMC

system is based completely on required performance, not allegiance to a single hardware vendor.

The system is capable of simulating a stack of 108 battery cells in series and 50x 4-bit temperature sensors. The system was delivered

with source code libraries for low level driver functions that provide full control over the available functionalities of the Battery

Simulator system. This software code is based on pre-existing software modules, which were assembled and customized to

accommodate the customer’s specific test system and test application. No higher level test execution control application was

developed by DMC, as the customer wished to develop their primary test control application themselves.

SYSTEM DETAILS

DEFINITIONS

BMS: Battery Management System - An electronic system for managing a rechargeable battery by continuously monitoring the

battery state, calculating and reporting data on the battery, performing safety functions in fault conditions, performing cell balancing

functions, etc.

NI: National Instruments, Inc.

PXI: Programmable eXtensions for Instrumentation - hardware platform for test and measurement IO.

DMM: Digital Multi-Meter - An electronic measurement device, commonly capable of acquiring high resolution voltage, current,

resistance, or capacitance measurements, as either single-point measurements or waveform captures.

DUT: Device Under Test - Client’s BMS device to be tested.







Page 3 of 21


OVERVIEW OF HARDWARE SYSTEM

A high-level functional diagram of the DMC Battery Simulator system is shown below.

Drawer 2 : BMS Slave Board Electronics (10 Slaves)(testing use)1U

Drawer 3 : BMS Master Board Electronics2U

120 Cell PCB

Connector

108 Cell Supply Line Connector

Custom pinout for R2/MRV

Configurations

Master-Slave

Connector

Cable Harness

Master-Slave

Connector

DMC Battery Simulation Test System

Shelf 3 : Power Supplies and Misc.3U

Power Supply

Power Supply

Thermistor Simulation Box2U

Drawer 1 : BMS Slave Board Electronics (10 Slaves) (permanent)1U

120 Cell Supply PCB Connector

Master-Slave

Connector

Thermistor Connector



108 Cell Sense Line Connector

108 Cell Supply Line Connector



108 Cell Sense Line Connector


108 Cell Supply Line Term Block

108 Cell Sense Line Term Block

MX

I Exp

ress

Inte

rfac

e

Mu

ltif

un

ctio

n D

AQ

Dig

ital

Mu

ltim

eter

Hig

h D

ensi

ty R

elay

Car

d

Hig

h D

ensi

ty R

elay

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

PXI Chassis 2 (4U)

MX

I Exp

ress

Inte

rfac

e

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Cel

l Sim

ula

tor

Car

d

Spar

e P

XI S

lot

Spar

e P

XI S

lot

Spar

e P

XI S

lot

Spar

e P

XI S

lot

Spar

e P

XI S

lot

Spar

e P

XI S

lot

Spar

e P

XI S

lot

Spar

e P

XI S

lot

Spar

e P

XI S

lot

Spar

e P

XI S

lot

Spar

e P

XI S

lot

Spar

e P

XI S

lot

Controller PC(2U Rack Mount PC)

Cell Current/Voltage Measurement Module (4U)

PXI Chassis 1 (4U)

Media Desk Rack-Mount Column 1 (25U) Media Desk Rack-Mount Column 2 (25U)

Functional Diagram for the Battery Stack Simulator System.







Page 4 of 21


SYSTEM ENCLOSURE The Battery Simulator System is built upon the Media Director Lectern V2 , a portable (wheeled) rack-mount enclosure desk, as

shown below:

Media Director Lectern V2: Primary System Enclosure

This mobile desk provides 32U of total rack-mount space in two separate columns for mounting primary system components,

including 6U of rack-mount space in the upper portion of the lectern just beneath the desk surface.

CONTROLLER PC AND ACCESSORIES

The primary controller for the Battery Simulator system is a rack mount PC. This PC serves as the primary controller for the test

system and runs a LabVIEW test application developed by customer engineers.

A listing of the performance specifications of this PC is provided below:

- Processor(s): Intel® i7 - 2600 (LGA1155) Quad Core Processor 3.4GHz/8MB Cache

- 2U Riser Card PCIe - x16, x4, x1

- Memory - DDR3: 16 GB DDR3-1333/PC3-10600

- Hard Drive: 2TB SATA III 7200RPM

- Optical Drive: Plextor® PX-890SA 24x DVD±R/W

- Video Card: PCI-EXPRESS RADEON HD6450 1GB/PCIe 2.0 (Dual Monitor)

- Operating System: Microsoft® Windows® 7 Professional 64-bit OEM



http://www.spectrumfurniture.com/products/productDetail.cfm?pc=1&psc=2&prod=1177





Page 5 of 21


The system includes a license for the LabVIEW 2012 NI Developer Suite package (the most

comprehensive and full featured package offered by National Instruments) in order to ensure the

customer has access to the complete set of LabVIEW functions, toolkits, and capabilities for their

development activities. This is the package that DMC uses internally for development, so utilizing this

package also ensures that the controller PC will have full access and compatibility with all supporting

software provided by DMC.

The system includes dual DellTM UltraSharpTM U2410 monitors that are mounted above the desk surface of the enclosure via a

dual flat panel mounting arm.

The system includes the Logitech Wireless Keyboard/Mouse MK710 peripheral devices for user operation of the PC.



http://www.ni.com/labview/buy/learn/?dev

http://www.dell.com/ae/business/p/dell-u2410/pd

http://www.logitech.com/en-us/keyboards/keyboard-mice-combos/wireless-desktop-mk710





Page 6 of 21


BATTERY STACK SIMULATION

The Battery Stack Simulation sub-system consists of Pickering PXI 41-752, 6-cell battery simulator cards placed inside a PXI chassis,

providing independent cell voltage simulated outputs. The Battery Simulator System includes 18 PXI Cell Simulator cards, enabling

simulation of a battery stack of 108 cells.

The cell simulator current outputs and voltage sense lines from each card connect to a custom built circuit board which configures

the independent simulated cells into a full simulated battery stack; it also handles battery stack management and safety functions.

Past this custom circuit board, the cell supply/sense lines route to a single high density DUT connection on the front panel of the

test stand.

The Pickering cell simulator cards offer no direct means of reading back their output current or voltage. As a result, the cards

themselves provide no direct capability for voltage supply line leakage current measurement, or for actual cell voltage

measurements.

Since these measurements are useful for the characterization and calibration of a BMS device, DMC’s Battery Simulator System

provides the capability to acquire independent cell voltage and current output measurements using a high-resolution Cell

Current/Voltage Measurement Module. This module consists of an active high-density relay switch matrix that enables

measurement of the current flow on any cell line or of the voltage differential between any two cell lines in the battery stack. This

high resolution cell current/voltage measurement module is described in more detail later in this document.

DMC considers the Pickering 41-752 battery simulator card to be the best tool for simulating a battery input to a BMS for the

following reasons:

1. The 750V isolation barrier allows the outputs to be stacked in series without inducing un-intentional ground faults or loops

and without voiding the manufacturer’s warranty.

2. The cards are capable of both sourcing and sinking current, just like an actual chemical cell. Accurate testing of BMS cell

balancing operations requires this current sinking function.

The 750V isolation barrier of the Pickering 41-752 card allows it to be used to emulate an entire low power battery stack

representative of those used for vehicle propulsion.

The Pickering PXI 41-752 is a PXI based, 6-channel battery simulator module. Each channel of the module is capable of supplying

up to 7V and 300mA to the load. Each channel is fully isolated from ground and from each other, allowing the channels to be

connected in series to simulate batteries arranged in a stacked architecture. The 750V isolation barrier permits the 41-752 to be

used to emulate a low power battery stack representative of those used for vehicle propulsion.

Each battery simulator provides independent power and sense connections, allowing the battery simulator to sense a remote load

and correct for wiring voltage losses. The battery simulator is designed to be fast-responding to dynamic loads, minimizing the

need for local decoupling capacitors at the load.







Page 7 of 21


A signal line on the user connector allows the user to shut down all battery simulator channels with a single connection. Multiple

module control lines are linked together to provide an easy way of inhibiting voltage generation (E-Stop) when using many series

connected modules that provide high output voltages.

Number of Channels: 6 independent isolated channels Output Voltage Range: 0 to 7V, settable with 14bit resolution

(approximately 0.43mV)

Isolation Voltage: ±750V Output Current: Up to 300mA per channel for voltages from 2.5V

to 7V Linearly de-rate to 200mA into a short circuit below 2.5V without thermal shutdown.

Current Sink: Variable current sink permits the output to be loaded so the battery simulator can sink current from a charger. Current sink can be set from 0 to 100mA in 16 steps. Current sink setting reduces the current available at the user connector.

Output Connections: Vout+, Vout- and two sense inputs for each simulator channel. Sense inputs detect output voltage at front panel connector if no remote sense lines are connected.

Load Response Time: 15μs Power Source: PXI backplane +12V, +5V, +3.3V and -12V.

Protection: All simulators are short circuit protected, reverse voltage protected and include thermal shutdown.

Output Connector: 37-way D-type, high voltage







Page 8 of 21


CELL VOLTAGE / CURRENT MEASUREMENT MODULE (OPTIONAL)

The Cell Voltage/Current Measurement Module provides independent (DMM based) high resolution measurement of the voltage

between any two cells in the simulated battery stack or of the current on any given cell voltage supply line. These measurements

are useful for the characterization (cell balancing functions, power consumption, leakage currents, etc.) or calibration of a BMS

device. This module also enables automated calibration of the Battery Stack Simulator device itself.

Cell Current / Voltage Measurement Multiplexing Module

To deliver this extensive range of measurements in a cost effective manner, the module utilizes a single high accuracy digital multi-

meter in conjunction with an active high density switching matrix to connect this meter to any desired set of measurement points.

The Battery Simulation system contains an NI PXI-4071 Digital Multi-Meter (DMM) installed in one of the PXI chasses. This 7 ½ digit

DMM delivers the following measurement capabilities:

- Voltage measurements from ±10 nV to 1000 VDC

- 8 DC current ranges with sensitivity down to 1 pA

- ±500 VDC/Vrms common-mode isolation

- Resistance measurements from 10 µΩ to 5 GΩ

- 1.8 MS/s isolated, 1000 V waveform acquisition







Page 9 of 21


Cell Current / Voltage Measurement Multiplexing Module

The Cell Voltage/Current Measurement Module uses a single DMM, and thus it is only possible to acquire one particular

measurement at a given time (i.e. the specific probe point that the current relay multiplexer state is connecting the DMM to

measure). It is very straightforward, however, to set up functions in the test control software in order to scan through all cell voltage

or current measurement points by simply reconfiguring the relay state between each measurement acquired by the DMM.

The switching matrix in this module also makes it possible to simulate a broken connection between a simulated cell and the BMS

or to simulate a shorted connection between two adjacent cells; these can be useful fault insertion mechanisms in BMS testing

regiments. Similarly, the Voltage/Current Measurement Module also provides the ability to perform complete and total

disconnection of the cell simulator from the BMS device under test.

The Cell Voltage/Current Measurement Module utilizes 5 amp relays that can handle cold switching up to 750 V,

and are thus more than capable of handling the expected total stack voltage generated by many simulated cells

in series.







Page 10 of 21


The Cell Voltage/Current Measurement Module fundamentally consists of multiple removable/swappable relay multiplexing cards

that are seated in a 4U (7”) high Vector card cabinet. It is designed to be located either directly above or directly below a PXI

chassis containing cell simulator modules (as shown in the image below). Each relay card connects directly to a cell simulator card

and handles the measurement multiplexing for those 6 simulated cells. This design makes it easy to scale the multiplexer module

when adding or removing cell simulator cards to increase/decrease the size of the simulated cell stack.

Cell Simulator Module Connected to Measurement Multiplexer Module







Page 11 of 21


BATTERY STACK SIMULATOR CONNECTIONS

Each simulated cell has one supply and one sense line that need to be routed independently to the Device Under Test (to allow

the cell simulator modules to accurately compensate for voltage drop in harness/wiring). Therefore, the complete set of simulated

cell connections consists of 108 cell voltage supply lines and 108 cell voltage sense lines. The Battery Simulator System provides two

parallel connections to the simulated cells.

Battery Stack Connection 1 is used to interface with the Device Under Test through a pair of connectors that are panel mounted in

the system enclosure panel. There are separate connectors (with identical pin-out mappings for consistency) for the simulated cell

voltage stack sense and supply lines, as shown below.

Battery Stack Connection 1 utilizes 2x 160 position connectors as depicted below.

Battery Simulator System Cell Voltage Connections to the Device Under Test

Battery Stack Connection 2 provides an auxiliary parallel connection to all simulated cell supply and sense lines for external

monitoring, measurement, and diagnostic purposes. This parallel connection has an available standard screw terminal connection

for each cell voltage supply and sense line, as depicted below. These breakout terminal connections are mounted facing out the

front of the primary system enclosure so as to make them externally accessible.







Page 12 of 21


Battery Simulator System Cell Voltage: Auxiliary Parallel Terminal Connections

TEMPERATURE SENSOR SIMULATION MODULE

The Temperature Sensor Simulation module supports simulation of 50x 4-bit resistive temperature. To enable future flexibility, the

module provides the ability to alternatively simulate 25x 8-bit with some minor reconfiguration of built-in jumper points. The

figures below illustrate the simulation of either one 8-bit or two 4-bit resistor chains and how the module supports switching from

4-bit to 8-bit simulation through the installation of jumpers. An N-bit simulated temperature sensor essentially consists of N fixed

resistors that can be inserted or removed from the simulated temperature sensor circuit using a relay switching matrix. The

resistor values that are placed in line with the simulated temperature sensor circuit add with one another (since they are in a

series configuration) to produce the desired resistance to simulate a particular temperature reading.

For a 4-bit simulated sensor, there are a total of 2^4 = 16 discrete resistance values (including a short circuit) that can be applied

by each simulated sensor. For an 8-bit simulated sensor, there are a total of 2^8 = 256 resistance values that can be generated.

The actual resistor values used in the module (which thus affect the total range and the set of overall resistance values that can

be generated) are fully configurable and are determined by the requirements of the test application.







Page 13 of 21


Temp Sensor Simulation Module Design Overview







Page 14 of 21


Resistor chains used to simulate a single 4-bit or 8-bit resistive temperature sensor.

The temperature sensor simulation system utilizes a modular mother board and daughter card architecture. The actual physical

resistors that comprise the simulated temperature sensors are all installed on swappable daughter cards that plug in to the module’s

mother board. The mother board handles the “infrastructure” of aggregating independent resistors into simulated temperature

sensors, integrating relays to control the simulated temperature circuits, etc. By swapping in and out sets of daughter cards

containing different resistor values, different types of temperature sensors or different temperature ranges can be simulated to

accommodate varying testing requirements or DUT models.

The relays that are responsible for configuring the desired output state of the simulated temperature sensors are contained on and

controlled by two high-density PXI relay cards. Control of the Temperature Sensor Simulation module is accomplished through a

set of LabVIEW driver VI’s provided along with the system.

The simulated temperature sensor module drivers include algorithms to automatically calculate the optimal combination of resistors

that should be inserted into a given simulated temperature sensor circuit in order to achieve the closest possible resistance to the

commanded value. Thus, the interface for controlling the temperature sensor module is simple and abstracts away the lower level

hardware operations. It is simply necessary to specify the desired resistance (corresponding to the temperature reading you want

to simulate) to apply to a particular temperature sensor number.

Each simulated thermistor requires two connection lines, and thus for a total of 50 simulated thermistors the system has 100 total

connections from the Temperature Sensor Simulation Module to the DUT. The Temperature Sensor Simulation Module has a 104

position connector mounted in the front panel of its enclosure, as depicted in the image below.







Page 15 of 21


Simulated Temperature Sensor Module Enclosure with High Density DUT Connector

Swappable Resistor Daughter Cards in Mother Board Base Infrastructure







Page 16 of 21


PXI CHASSIS TO CONTROLLER INTERFACE

The Battery Simulator System includes two full 18 slot NI PXI-1045 chasses to house Cell Simulator PXI cards as well as supporting

instrumentation and device control cards.

Both of these chasses interface to the controller PXI using an MXI Express interface. An NI

PXI-PCIe8362 card is installed in an available PCIe port of the controller PC to provide two

MXI interface ports. Each PXI chassis has an NI PXI-8360 MXI Interface card installed in the

first slot of the chassis. The MXI ports on the controller PCI card each connect via an included

three meter high-speed MXI cable to one of the MXI interface cards in the respective PXI

chasses to effectively link both chasses to the single PC controller.

This MXI Express interface provides a software-transparent link between the controller PC

and the PXI chasses that house system instrumentation and card modules. This linkage allows

the Battery Simulator hardware to effectively be available as native or directly connected instrumentation on the controller

computer.

SOFTWARE DRIVER LIBRARIES FOR SYSTEM CONTROL

The Battery Simulator System includes LabVIEW driver libraries (with full unlocked source code) that provide full control over the

available functionalities of the Battery Simulator system. No higher level test execution control application was developed by DMC

for this particular system, as the customer wished to develop a primary test control application internally.

DMC has provided the following control drivers (with accompanying documentation) for use on the controller PC:

- DMC custom LabVIEW drivers for full simulated battery stack control and management

- DMC custom LabVIEW drivers for control of Cell Voltage/Current Measurement Module

- DMC custom LabVIEW drivers for control/management of simulated temperature sensors

- DMC custom LabVIEW Digital Multi-Meter Drivers for higher level DMM functions (waveform capture and analysis, etc.)



http://sine.ni.com/nips/cds/view/p/lang/en/nid/13913








Page 17 of 21


- VISA (Virtual Instrument Software Architecture) driver set for direct control of individual Cell Simulator modules and

Pickering relay cards

- Direct IO driver set for direct control of individual Cell Simulator modules and Pickering relay cards

SAFETY / INTERLOCK FUNCTIONS

Since the Battery Simulator system is capable of generating high voltages (as required for battery stack simulation), it contains both

hardware and software based safety features to disable all voltage output during a safety event.

- Large Red ESTOP button in the middle of the top desk surface of Battery Simulator System enclosure

- External / Remote Interlock connector on right side panel of enclosure

- Software based disable command to open PC controlled relay that is in series with safety interlock loop

Activating any of these safety features will immediately turn off all voltage outputs from the Battery Stack Simulator.







Page 18 of 21


COMPANY OVERVIEW

DMC is a well-known and established controls engineering & consulting firm focused on the industrial automation market. We

develop and implement solutions for a wide range of industries using a variety of technologies. DMC has successfully delivered

solutions for hundreds of companies including 3M, Abbott Laboratories, Argonne National Labs, Bosch, BRP, Caterpillar, Chrysler,

Fermilab, Ford, John Deere, UL, Wrigley, and Yaskawa. Every solution we develop is based on a solid understanding of engineering

principles with the primary objective of helping our client increase profitability and productivity using world-class solutions.

DMC is a certified member of the Control Systems Integrators Association (CSIA). DMC passed a rigorous third party audit of 200

criteria that span all aspects of business performance in the areas of:

General Management

Human Resources Management

Marketing and Business Development

Financial Management

Project Management

System Development Lifecycle

Quality Assurance Management







Page 19 of 21


CONTACT INFORMATION

www.dmcinfo.com

DMC, Inc.

2222 N. Elston Ave. Suite 200

Chicago, IL 60614

P 312-255-8757

F 312-255-8758

DMC, Inc.

20 Holland St. Suite 408

Somerville, MA, 02144

P 617-758-8517

DMC, Inc.

1860 Blake St. Suite 410

Denver, CO 80202

P 303-223-1801

Name Project Role E-Mail Address Cell Phone Number

Jesse Batsche Project Manager [email protected] 513-207-8256

Tim Jager Project Director [email protected] 312-560-9316

Darren Jones Project Director [email protected] 312-520-0411

Dan Freve Project Director [email protected] 574-226-1529

Matt Puskala Project Director [email protected] 312-925-7290

John Sullivan Project Director [email protected] 703-350-3504

Ken Brey Technical Director [email protected] 312-961-0467

Frank Riordan President [email protected] 312-953-4817



../www.dmcinfo.com


../[email protected]











Page 20 of 21


NATIONAL INSTRUMENTS / LABVIEW EXPERIENCE

DMC has been a National Instruments (NI) Alliance member for over 10 years with one of the largest teams of Certified LabVIEW

developers in the country, including several National Instruments’ Certified LabVIEW Architects (highest level of certification

available), and multiple NI Certified LabVIEW Developers.

DMC automates difficult testing functions using a variety of platforms including PC-based systems, PLCs, and embedded systems.

We have developed tests for a variety of organizations including national and certification laboratories and companies in the

automotive and telecommunications industries. We manage dozens of large test system projects each year and know what it takes

to get the project completed on-time and on-budget with industry leading performance.

TEST AND MEASUREMENT EXPERIENCE

Our Test and Measurement Automation Services help clients automate laboratory testing using the latest technologies. We have

years of experience delivering world class solutions to leaders in research, development, production, quality, and certification

testing. Our flexible and collaborative approach has shown to deliver efficient, accurate, and robust test systems, as well as the tools

to leverage test data for effective results analysis.

DMC has employed LabVIEW in many industries, including product development, test and measurement engineering, R&D, and

high-tech manufacturing. We have developed LabVIEW solutions for hundreds of projects at dozens of customers, including:

Argonne National Laboratories Underwriters Laboratories

Fermi National Accelerator Laboratory (Fermilab) LG

Bombardier Recreational Products Bosch

DMC applies a disciplined and systematic approach to LabVIEW software design. Engineers at DMC employ software conventions

and architectures so that code is structured and well-organized. One example of these structures is a LabVIEW state machine that

builds a system based on states, events, and actions.

DMC has a vast, reliable code library that has been tested and can be used to significantly reduce the development time and risk.

Leverage the work we've already done to reduce start-up time now and downtime later. We've also developed LabVIEW tools for

additional features such as HTML and PDF reporting, TDMS file storage, external data viewers, and SQL databases.







Page 21 of 21


RELATED PAST AND CURRENT PROJECTS

Visit our relevant website case studies at the link below.

http://www.dmcinfo.com/latest-thinking/case-studies/miscfilter/9/battery-test.aspx



http://www.dmcinfo.com/latest-thinking/case-studies/miscfilter/9/battery-test.aspx

Documents

Battery Simulator System Overview - DMC, Inc. Papers/NASA... · 2019-09-12 · f or R2/MRV Conf igurat ions Mast er-Slave Connect or Cable Harness Mast er-Slave Connect or DMC Bat