Optimal Bingham number control method for impact working condition of automobile electric control damping suspension system

Abstract

The invention discloses an optimal Bingham number control method for the impact working condition of an automobile electric control damping suspension system, and the method depends on hardware including the automobile electric control damping suspension system, a displacement sensor and a force sensor. The method comprises the following steps: 1) establishing an automobile suspension system dynamic model under an impact working condition according to mechanical characteristics of an automobile suspension in a stretching and compressing state; 2) calculating the motion state of the electrically-controlled damping suspension under impact excitation by utilizing the kinetic model and the initial conditions of suspension control, and calculating the optimal Bingham number and the corresponding expected force in the compression and springback process; 3) based on the multi-operator model, establishing a nonlinear mechanical model of the automobile electric control damping actuator; and 4) tracking the expected force through an electric control damping actuator nonlinear mechanical model, and calculating the optimal output power matched with the optimal Bingham number. According to the invention, the self-adaptive control of impact buffering can be quickly and accurately realized, so that the structural damage of impact excitation to a vehicle body / frame structure and a driver and passengers can be effectively reduced.

Description

technical field [0001] The invention relates to the field of automobile vertical dynamics modeling and control, in particular to an automobile electric control damping suspension impact buffering dynamics modeling and control method. Background technique [0002] Realizing the adaptive control of shock excitation and reducing the damage of shock loads to engineering equipment and the hazards of operators is a difficult problem that cannot be ignored in many engineering applications, such as landing devices for spacecraft, seat collision protection devices, and rear seats for artillery and firearms. Buffers, etc. Therefore, minimizing the damage caused by impact loads is not only an important research topic in the field of impact control, but also has huge and extensive application value. Due to the suddenness and instantaneousness of the shock excitation, the traditional structure is often difficult to meet the requirements of fast response and self-adaptation of the shock ...

AI Technical Summary

Problems solved by technology

However, this hybrid control method does not make full use of the stroke of the control shock absorber, and cannot minimize the impact load

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