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Design of Brushless DC Motor Controller for Actuator Based on MCU

Gang Xu

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Abstract

In this paper a design method of rare earth permanent magnet(REPM) brushless DC motor(BLDCM) controller with dual-redundancy was introduced,which was used in the servo actuator,and the method was designed on the basis of a MCU.The hardware structure,software design and working principle of the controller were discussed in detail.Furthermore the PWM speed regulating mode,the control of MCU,the CPLD logic signal synthesis and the practical application of current cut-off degenerative circuit were introduced.The experiments showed that the controller had a high performance,a tight structure,a low cost,and also had a good reliability and practicability.

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What this paper is about

In this paper a design method of rare earth permanent magnet(REPM) brushless DC motor(BLDCM) controller with dual-redundancy was introduced,which was used in the servo actuator,and the method was designed on the basis of a MCU.The hardware structure,software design and working principle of the controller were discussed in detail.Furthermore the PWM speed regulating mode,the control of MCU,the CPLD logic signal synthesis and the practical application of current cut-off degenerative circuit were introduced.The experiments showed that the controller had a high performance,a tight structure,a low cost,and also had a good reliability and practicability.

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Available abstract

In this paper a design method of rare earth permanent magnet(REPM) brushless DC motor(BLDCM) controller with dual-redundancy was introduced,which was used in the servo actuator,and the method was designed on the basis of a MCU.The hardware structure,software design and working principle of the controller were discussed in detail.Furthermore the PWM speed regulating mode,the control of MCU,the CPLD logic signal synthesis and the practical application of current cut-off degenerative circuit were introduced.The experiments showed that the controller had a high performance,a tight structure,a low cost,and also had a good reliability and practicability.

Key concepts: Microcontroller, DC motor, Complex programmable logic device, Control theory (sociology), Actuator, Computer science, Redundancy (engineering), Servomotor

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