Anti-saturation composite controller and construction method of electromagnetic actuator for automobile active suspension

Abstract

The invention discloses an anti-saturation composite controller and a construction method of an automobile active suspension electromagnetic actuator in the field of vehicle chassis control, respectively constructing a sudden change load compensation controller, a state feedback controller and a voltage decoupling controller, and adopting the controller The parameter optimization module obtains the global optimal controller gain of the state feedback controller through the gray wolf optimization algorithm, connects the controller parameter optimization module with the state feedback controller in series, and connects the state feedback controller, sudden load compensation controller, voltage The decoupling controller is connected in parallel with the voltage limiting controller to form an anti-saturation composite controller; the invention improves the response speed of the active suspension, and can effectively increase the maximum voltage supplied to the motor under the premise of ensuring the safe operation of the motor, suppressing the control The saturation phenomenon of the device shortens the adjustment time.

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...

AI Technical Summary

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

Images