RESEARCH OF ROBUST H∞ CONTROL IN CONSIDERATION OF NONLINEAR CHARACTERISTICS OF AN ELECTROMAGNETIC ACTUATED ACTIVE SUSPENSION STRUCTURE

摘要

Feature quick response, high efficiency and potential to harvest energy from vibration, electromagnetic actuators are utilized to realize the active suspension design. Basing on a rotary type electromagnetic actuated active suspension (EAAS), the inertia of the actuator and nonlinear characteristics of the specific suspension structure are investigated. The dynamic equations of EAAS is derived according to the investigation. And a robust H∞ control is proposed basing on this dynamic model. With the specific suspension structure built in ADAMS and control strategy implemented in Matlab Simulink, the performance of a control on a real suspension structure is evaluated via this collaborative simulation. Results prove the feasibility and superiority of the proposed robust H∞ control.