A control method for the damping value of the three-speed adjustable shock absorber of the semi-active energy-feeding suspension

Abstract

The invention discloses a method for controlling a damping value of a three-gear-adjustable shock absorber on a semi-active energy-feedback suspension frame. The method comprises the following steps: according to a requirement on damping control of a semi-active energy-feedback suspension frame system, analyzing confounding characteristics of the system and determining the working mode of the system; according to the working condition and performance requirements of the system, determining threshold values of the system in different working modes; and switching control strategy of the system in a confounding way by comparing the threshold values. According to the method, different performance requirements on the semi-active energy-feedback suspension frame under different working conditions are sufficiently considered; according to real-time change of the road condition, the vehicle speed and the load, the optimal damping value of the adjustable shock absorber can be controlled in real time; the understanding and decomposition of an operating condition of a vehicle can be further deepened; and another new direction is provided for enhancing the control performance and the intelligence level of the semi-active energy-feedback suspension frame.

Description

technical field [0001] The invention relates to a damping control method of a shock absorber, in particular to a method for controlling the damping value of a three-speed adjustable shock absorber of a semi-active energy-feeding suspension based on a hybrid system theory. Background technique [0002] In recent years, international oil prices have fluctuated, and energy and environmental issues have become increasingly prominent. Energy conservation, emission reduction, and low-carbon economy have become one of the main measures to achieve national sustainable development. Hybrid vehicles, while maintaining the characteristics of traditional vehicles, have the advantages of optimizing vehicle dynamic performance, effectively improving fuel economy, and greatly reducing exhaust emissions. For hybrid vehicles, because the total power consumption is relatively low and the requirements for efficiency are very strict, a suspension system that can recover vibration energy is neede...

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned problems existing in the hybrid control system of the semi-active energy-feeding suspension in the prior art, that is, the defect that the semi-active energy-feeding suspension cannot perform well in a wide range of working conditions, a semi-active energy-feeding suspension three The hybrid control method of the damping value of the gear-adjustable shock absorber, thereby improving the control performance and intelligence level of the semi-active energy-feeding suspension

Images