Brushless DC Motor Controller for Automotive EPS and Its Realization Method

Abstract

The invention discloses a controller of a brushless direct current motor for an automotive electric power storage (EPS) and a realizing method of the controller. The controller comprises a neural network regulator and a recombination controlled object which are connected in series, wherein the neural network regulator comprises a first input end connected with a rotation speed detection unit, a second input end connected with a rotation speed preset unit, and a third input end connected with a delayer, the delayer is connected with the rotation speed detection unit, and the rotation speed detection unit is connected with the recombination controlled object and is used for detecting the actual rotation speed of the recombination controlled object. The controller of the brushless direct current motor for the automotive EPS and the realizing method of the controller effectively resolve the problem of nonlinear control of the brushless direct current motor for the automotive EPS. In addition, the controller is simple and feasible in manufacturing method, convenient to achieve, reasonable in design, and strong in anti-load-disturbance capacity.

Description

technical field [0001] The invention relates to the technical field of new energy vehicle drive and electric transmission control equipment, in particular to a neural network-based brushless DC motor controller for automotive EPS and an implementation method thereof. Background technique [0002] As an important device to control the driving direction of the car, the steering system of the car will directly affect the maneuverability and stability of the car, and it plays a very important role in improving the driver's working conditions, protecting the driver's personal safety and reducing traffic accidents. . With the rapid development of modern automobile technology, modern control technology and electronic technology, the automobile steering system has developed from traditional mechanical steering system, hydraulic power steering system, electro-hydraulic power steering system to a new type of power steering system - electric power steering Steering system (Electric Po...

AI Technical Summary

Problems solved by technology

Although the traditional PID control algorithm has the advantages of simple algorithm, easy engineering implementation, high precision, and strong reliability, it only has a good control effect for the control object that can establish an accurate mathematical model.

The brushless DC motor speed control system is a complex controlled object, which has the characteristics of serious nonlinearity, strong coupling, and time-varying parameters. It is difficult to obtain its accurate mathematical model, and the existence of load disturbance makes the conventional PID control method difficult. Make the control system obtain ideal dynamic and static control effects and strong robustness

[0005] In order to essentially solve the problem that the dual closed-loop control method of the brushless DC motor speed control system for automotive EPS is relatively complex and the control effect is not good, and at the same time ensure the various control performance indicators of the brushless DC motor speed control system for automotive EPS, Such as dynamic response speed, steady-state tracking accuracy and strong anti-interference ability, need to adopt a new control algorithm

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