Car active suspension electromagnetic actuator anti-saturation composite controller and construction method thereof

Abstract

The invention discloses a car active suspension electromagnetic actuator anti-saturation composite controller and a construction method thereof, and belongs to the field of vehicle chassis control. The construction method comprises the steps that a mutant load compensation controller, a state feedback controller and a voltage decoupling controller are constructed correspondingly, a controller parameter optimization module is adopted, the global optimal controller gain of the state feedback controller is obtained through a grey wolf optimization algorithm, the controller parameter optimizationmodule and the state feedback controller are in series connection, and the state feedback controller, the mutant load compensation controller and the voltage decoupling controller are in parallel connection and then are in series connection with a voltage limiting controller to constitute the anti-saturation composite controller. The response speed of an active suspension is increased, under the premise of ensuring safety operation of a motor, the maximum voltage supplied to the motor can be effectively improved, the saturation phenomenon of the controller is inhibited, and the adjusting timeis shortened.

Description

technical field [0001] The invention belongs to the field of vehicle chassis control, in particular to a structure and a construction method of a composite controller of an active suspension electromagnetic actuator of a vehicle. Background technique [0002] As an indispensable part of the car, the suspension not only transmits force and moment, maximizes the friction between the tire and the road surface, and provides good steering stability, but also buffers the impact transmitted to the body from the uneven road surface. Force, so that the car can run smoothly. At present, most of the suspensions are passive suspensions, the stiffness and damping are determined according to experience or optimal design methods, and their performance cannot be changed or adjusted according to changes in external signals; The vibration energy caused by the excitation is dissipated in the form of heat, resulting in energy loss. Active suspension can be actively adjusted according to exter...

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Problems solved by technology

The disadvantage of this control method is also obvious. There are multiple PI controllers in the entire control system, and at least six controller parameters need to be adjusted, which will bring a lot of workload in practical applications; and due to the inherent nature of the double closed-loop control structure defects, the dynamic characteristics of the system will be limited

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