Motor controller based on DSP (Digital Signal Processor)

Abstract

The invention discloses a motor controller based on a DSP (Digital Signal Processor), which uses two sets of PWM (Pulse-Width Modulation) signals of a DSP chip to simultaneously control two motors, forms a closed-loop control by processing feedback signals of the motors, and is provided with a hardware protection circuit at the DSP output end. The motor controller can be used for simultaneously controlling two motors, and the control circuit has the advantages of comparatively simple structure and less cost; the use of one DSP avoids the synchronism problem and ensures higher control accuracy; and the arrangement of the hardware protection circuit ensures higher reliability.

Description

technical field [0001] The invention relates to a motor controller based on DSP, in particular to a controller which uses one DSP to simultaneously control two motors. Background technique [0002] DSP is widely used in power electronic control. Taking motor control as an example, DSP controls motors with high precision, so more and more developers and designers choose DSP-based controllers to control motors. [0003] In the prior art, one controller usually controls one motor, and when two motors need to be controlled simultaneously, two sets of controllers are needed. Such as figure 1 The structure diagram of the DSP-based motor controller in the prior art shown, the upper computer 10 communicates with the DSP 11 and the DSP 12 respectively, and the DSP 11 and the DSP 12 respectively control a motor, and the respective motor position codes of the DSP 11 and the DSP 12 The signal terminal (ABZ) collects the motor position signal, the analog-to-digital conversion terminal ...

AI Technical Summary

Problems solved by technology

[0005] 1. Dual controllers make the control circuit structure relatively complex and expensive;

[0006] 2. The synchronization between the two controllers is poor, and control errors are prone to occur

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