Abstract
This paper describes the control design of an active horizontal seat suspension with an electromagnetic actuator. First, physical and mathematical models of an active vibration reduction system with a seated human body are established. Then, a novel control strategy for the permanent magnet synchronous motor is developed to improve the vibro-isolation properties of the horizontal seat suspension. A multi-criteria optimisation is employed to obtain control system parameters that allow simultaneous minimisation of two conflicting vibro-isolation criteria, i.e. the seat effective amplitude transmissibility (SEAT) factor and the suspension travel. Finally, a laboratory investigation of the effectiveness of the active system is conducted and the dynamic performance of the system is compared with that of a corresponding conventional passive suspension system.
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