Vibration damping control method and device for hybrid electric vehicle

Abstract

The invention relates to a vibration damping control method and device for a hybrid electric vehicle. The method includes the steps of collecting vibration signals in three directions when the vehicleis at a standstill state, and calculating a combined phasor amplitude of the vibration signals in the three directions; determining whether the combined phasor amplitude is less than the set amplitude threshold or not, and if the combined phasor amplitude is not less than the set amplitude threshold, determining whether the engine rotating speed is related to the vehicle speed or not; if the engine rotating speed is not related to the vehicle speed, selecting at least one power adjustment strategy for power adjusting, and finding out corresponding overall vehicle control parameters enabling the combined phasor amplitude of the vehicle in the three directions to be minimum in the power adjusting process; and using the corresponding overall vehicle control parameters enabling the combined phasor amplitude of the vehicle in the three directions to be minimum to control a vehicle power system. By means of the vibration damping control method and device, closed loop control of signal detection and control optimization is formed by organically combining vibration detection and optimization control, the optimization cycle is better shortened, and the optimization effect is improved.

Description

technical field [0001] The invention relates to a vibration reduction control method and device for hybrid electric vehicles, belonging to the technical field of vibration control of hybrid electric vehicles. Background technique [0002] Hybrid vehicles use two or more different actuators to drive vehicles. Compared with traditional vehicles, hybrid vehicles have significant changes in quality, structure, materials, technology and power output superposition methods, and the vibration of the whole vehicle is also It exhibits high-dimensional, time-varying and nonlinear characteristics. Simply relying on the establishment of a system vibration analysis model can no longer solve multi-disciplinary, multi-parameter, high-dimensional vibration problems. Under the premise of a fixed hybrid hardware configuration, it is necessary to find an efficient method to reduce system vibration and noise to improve ride comfort of the vehicle. [0003] At present, in order to reduce vehicl...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a vibration reduction control method and device for a hybrid electric vehicle, which is used to solve the problem of poor vehicle vibration control effect

Images