Field programmable gate array (FPGA)-based permanent magnet synchronous motor vector control device and method

Abstract

The invention discloses a field programmable gate array (FPGA)-based permanent magnet synchronous motor vector control device and a method. The control end of the device comprises a master control circuit board consisting of the FPGA, and an acquisition circuit, the FPGA comprises an analog-digital control module, a clark module, a sine and cosine calculation module, a Park module, a reverse Park module, a proportional integral (PI) regulator, a space vector pulse width modulation (SVPWM) data processing module, a rotor information acquisition module and a clock control module, wherein the acquisition circuit comprises an isolating circuit and an acquisition circuit output by SVPWM, and the acquisition circuit comprises an encoder conditioning circuit and a stator current acquisition circuit. The device and the method use rich programmable logic resources of the FPGA and adopt a parallel processing manner, thereby greatly improving the processing speed of vector control algorithm, and being applied to varied needs of motor control.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to a method and device for vector control of permanent magnet synchronous motors. Background technique [0002] The permanent magnet synchronous motor has fast positioning and strong accuracy, and has become an indispensable actuator in many control fields, such as CNC processing machine tools, robot systems, and semiconductor manufacturing. With the rapid development of semiconductor manufacturing technology, various design chips with excellent performance have been developed continuously. These chips have programmable functions, and can be designed and planned on the PC side to meet various needs, thereby improving performance. High-capacity, high-performance and cheaper field-programmable logic element (FPGA) chips are introduced continuously, which makes the application of FPGA more and more important. The advantage of using the FPGA chip to realize the servo system of the AC mo...

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Problems solved by technology

[0005] The motor control system based on digital signal processing (DSP) has matured, and its powerful digital processing capability makes it easy to realize the vector control algorithm. However, the DSP processing method uses software programming and adopts a serial working sequence, as follows figure 1 As shown, due to the limitation of the working mode and the limitation of the chip's own IO port, in some control occasions with high real-time requirements or multiple motors working together, it is difficult for a single-chip DSP to meet the design requirements, not only the operation speed is slow, but the efficiency is low , and additional hardware needs to be added to meet the needs of the operating environment

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