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This ppt contains introduction to stepper motor and its types and the mode of operation of the stepper motor. This ppt consists of mainly diagrams and few theory.
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Real Images
Used in CD-ROM Drive Used in Dot Matrix Printer
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Types of Stepper Motor
• Variable Reluctance SM• Permanent Magnet SM• Hybrid SM
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Variable Reluctance Stepper Motor
MODES OF OPERATION 1 Phase ON 2 Phase ON Half Step Operation Microstepping
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VRSM – 1 Phase ON Mode
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VRSM- 2 Phase ON Mode
2 stator energized simultaneously AB, BC, CA, AB Equilibrium position is in between
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VRSM – Half Step Operation
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VRSM- Microstepping
• 2 phase ON mode• 2 unequal current• Very fine Resolution• Used for smooth low speed operation with
high resolution
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Permanent Magnet Stepper Motor
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Hybrid Stepper Motor
APPLICATION
• Printers, Plotters• Robotics• Automotive• Commercial• Military• Medical Applications
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THANK YOU
References:Textbook of Electrical Technology, BL Theraja, AK Theraja; S Chand
