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Optimal hardware and control system design for aero and auto applications
Paul StewartElectrical Machines and Drives GroupDept. Electronic and Electrical Engineering
IEEE Colloquium on Optimisation for Control 24th April 2006
ELVAS – ‘Electronic Valve Actuation Systems’EC Framework V Project Contract No. G3RD-CT2000-00363 Objectives
•15% decrease in CO2
emissions•Substantial engine noise reduction•Develop novel sensor and actuator topology•Develop novel control techniques and strategies for demanding dynamic performance requirements•Optimised power consumption•Validate performance on Renault F4R (Laguna/Meganne) engine
Application of multiobjective optimisation to Auto/Aero design
IEEE Colloquium on Optimisation for Control 24th April 2006
Application problem
Objectives
•Landing velocity <0.05m/s•Minimal transition time•Departure velocity <0.05m/s through valve gap contact point•Minimise power consumption
Challenges
•Which actuator topology?•Is there an achievable solution?•What is the optimal trajectory to track•Can it be tracked?
IEEE Colloquium on Optimisation for Control 24th April 2006
Multiobjective system design stage 1:Find the optimal force profile
IEEE Colloquium on Optimisation for Control 24th April 2006
Multiobjective system design stage 1:Objective function
IEEE Colloquium on Optimisation for Control 24th April 2006
Multiobjective system design stage 1:Candidate solutions
IEEE Colloquium on Optimisation for Control 24th April 2006
Multiobjective system design stage 1:Candidate solution performance 1
IEEE Colloquium on Optimisation for Control 24th April 2006
Multiobjective system design stage 1:Candidate solution performance 2
IEEE Colloquium on Optimisation for Control 24th April 2006
Multiobjective system design stage 1:Candidate solution performance 3
IEEE Colloquium on Optimisation for Control 24th April 2006
Multiobjective system design stage 1:Candidate solution performance 4
IEEE Colloquium on Optimisation for Control 24th April 2006
Multiobjective system design stage 2:Actuator design 1
IEEE Colloquium on Optimisation for Control 24th April 2006
Multiobjective system design stage 2:Actuator design 2
IEEE Colloquium on Optimisation for Control 24th April 2006
Multiobjective system design stage 2:Actuator design 2a
IEEE Colloquium on Optimisation for Control 24th April 2006
Multiobjective system design stage 2:Actuator verification
IEEE Colloquium on Optimisation for Control 24th April 2006
Resume
Challenges
•Does an achievable force profile exist for the mechanical system•Does an actuator exist to enable project targets to be achieved•Does candidate actuator fulfil objective with realistic energy utilisation•Can an optimal position trajectory be derived
Methodology
•Utilise multiobjective optimisation to search candidate force profiles•Assess candidate actuator designs against identified force profile•Utilise multiobjective optimisation to search candidate current profiles•Identify optimal velocity/position trajectory•Design gain scheduled tracking controller via multiobjective technique
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