Method and device for controlling electronic throttle valve of automobile

Abstract

The invention provides an automotive electronic throttle valve control method and device. The device comprises a curve set module, an opening detection module, a starting point value selection module and an increment adjustment module, wherein the curve set module is used for setting a electronic throttle valve balance resistance curve; the opening detection module is used for detecting the current opening of an electronic throttle valve; the starting point value selection module is used for selecting the PWM starting point value for conducting PID increment adjustment on the electronic throttle valve balance resistance curve set by the curve set module according to the difference value between the current opening of the electronic throttle valve detected by the opening detection module and the target opening; the increment adjustment module is used for selecting the corresponding increment PID adjustment mode according to the absolute value of the difference value between the current opening and the target opening of the electronic throttle valve, conducting PID increment adjustment on the current opening of the electronic throttle valve according to the PWM starting point value selected by the starting point value selection module so that the current opening of the electronic throttle valve approaches the target opening. By means of the automotive electronic throttle valve control method and device, problems of action lag and overshooting of the electronic throttle valve can be solved.

Description

Technical field [0001] The present invention relates to the technical field of engines, in particular to an electronic throttle control method and device for automobile engines. Background technique [0002] In the prior art, the automobile throttle of the automobile is connected with the accelerator pedal in the cab of the automobile by using a steel wire rope and a pull rod. The driver controls the opening of the throttle by stepping on the accelerator pedal, thereby changing the opening of the intake passage and adjusting the intake of the engine to achieve the purpose of changing the output power of the engine. [0003] This kind of throttle control method is difficult to make precise adjustments according to the different working conditions of the car, especially in cold start, low load, transitional working condition and idling working condition, which leads to the reduction of automobile economy and emissions The reduction. At the same time, the throttle control method can...

AI Technical Summary

Problems solved by technology

[0007] The existing PID algorithm only uses a set of parameters, no matter what set of parameters is set, it is impossible to truly realize the fast following function of the electronic throttle

Even if multiple sets of PID parameters are used, there will be performance problems such as large overshoot, large jitter, long adjustment time and large static deviation under certain working conditions

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