Control method for multi-mode shock absorber of vehicle

Abstract

The invention discloses a control method for a multi-mode shock absorber of a vehicle and belongs to the field of energy conservation and emission reduction of vehicles. An ECU (Electronic Control Unit) controller judges driving road conditions through a vehicle signal acquired by a sprung mass acceleration sensor and an unsprung mass acceleration sensor, and further, a suspension is in active, semi-active and passive vibration damping modes through controlling the input current of a linear motor three-phase winding coil circuit and an excitation coil circuit in a magnet-rheological shock absorber, so that the vehicle can control the suspension at any moment when being under different road conditions to achieve a better riding comfortableness. Meanwhile, part of vibration energy of the suspension can be recovered by utilizing a linear motor when the suspension is in passive and semi-active modes, so that the organic combination of vibration isolation and energy feedback of the suspension is realized, and the purposes of energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention belongs to the field of automobile energy saving and emission reduction, and in particular relates to a control method of a vehicle multi-mode shock absorber. Background technique [0002] Shock absorber is a vital part of the car suspension, its performance directly affects the ride comfort of the car. At present, traditional hydraulic shock absorbers are usually used on passive suspensions, and their damping cannot be adjusted, so the corresponding damping cannot be adjusted according to road conditions, etc., and a good vibration damping effect cannot be achieved. At the same time, when the car is running on the road, the body vibrates up and down due to the uneven road surface, and part of the energy of the car is consumed in the form of heat energy during the vibration of the suspension. If this energy is recovered, the fuel consumption will be greatly reduced and the Automobiles have good fuel economy, so the recovery of vibration ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above technical defects, the present invention integrates the linear motor into the combined structure of the magneto-rheological shock absorber, proposes a control method for the multi-mode shock absorber of the vehicle, and solves the problem that the change of the dynamic performance of the vehicle is not considered , and the control method is a variety of modes

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