Implementation method of motor drive controller of electric steering wheel

Abstract

The invention discloses an implementation method of a motor driving controller of an electric steering wheel, belongs to the field of automatic driving, and aims to solve the technical problem of howto control high-precision action of the electric steering wheel through operation of a driving motor so as to realize automatic driving. According to the technical scheme, the method comprises the steps that a main control chip DSP sends an instruction to a frameless motor control driver through a digital communication bus, and a control circuit in the frameless motor control driver receives the instruction; three-phase voltage of the servo motor is calculated by adopting a servo motor magnetic field orientation vector control system according to the current current, speed and position information of the servo motor, and outputting the three-phase voltage through a PWM signal; a grid driving power supply in the frameless motor control driver supplies power to the driving circuit, and the driving circuit amplifies a PWM signal and is used for driving a power tube MOSFET in the frameless motor control driver, thereby realizing low-noise and high-efficiency energy conversion.

Description

technical field [0001] The invention relates to the technical field of automatic driving, in particular to a method for realizing an electric steering wheel motor drive controller. Background technique [0002] With the vigorous development of vehicle driverless technology and the development of advanced servo control systems, people have higher and higher requirements for the overall performance of the steering gear, which has prompted the steering gear to continuously reduce its volume and quality, continuously increase its carrying capacity, and control performance. Continuously improve the direction of development. The steering gear is an important executive mechanism of the steering wheel control system of the vehicle, and its performance directly affects the dynamic quality of the vehicle control system. The steering gear is simple and reliable, has good craftsmanship, is easy to use and maintain, has a single energy source, and is low in cost. , easy to control and o...

AI Technical Summary

Problems solved by technology

[0003] At present, the automatic driving steering wheel used in the market uses the hydraulic principle to drive the steering hydraulic pump to realize the rotation of the wheels. The installation of the hydraulic scheme will change the hydraulic oil circuit of the entire vehicle and the structure of the original vehicle, which will cause great difficulties for the after-sales maintenance of the vehicle. , and the installation is very troublesome

Images