FPGA (field programmable gate array)-based brushless direct-current motor commutation control method

Abstract

The invention provides an FPGA (field programmable gate array)-based brushless direct-current motor commutation control method aiming at the technical problem of high resource occupancy in control of a brushless direct-current motor on the basis of FPGA finite-state machine commutation in the prior art. A main operating principle includes that commutation signals (including Hall signals with Hall and commutation signals acquired through a hardware circuit without Hall sensors) of a motor are detected and directly subjected to commutation logic conversion through FPGA to control on and off of a full-bridge circuit, adopting an initial state transfer process of an existing finite-state machine to realize driving of rotation of the motor is avoided, and the problem of high resource occupancy in commutation of FPGA control based brushless direct-current motors is solved.

Description

technical field [0001] The invention relates to the technical field of electric power transmission, in particular to a control method of a brushless DC motor. Background technique [0002] Brushless DC motor not only has the advantages of simple structure, reliable operation and convenient maintenance of AC motor, but also has good speed regulation performance of DC motor. At the same time, due to the use of new permanent magnet materials, its power density is high, and the volume is smaller under the same power. , so it has been widely used. [0003] attached figure 1 Shown is the FPGA-based brushless DC motor control system, including FPGA, drive circuit and Hall sensor, where FPGA is the main control, on the one hand, it receives the control signal from the upper level, and on the other hand, it executes its own control strategy , to control the operation of the brushless motor. [0004] At present, the FPGA-based control brushless DC motor commutation logic in the pri...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems in the prior art, the present invention provides an FPGA-based brushless DC motor commutation control method, which can solve the problem of excessive resources occupied by the FPGA-based brushless DC motor commutation

Images