Abstract
Keywords
Active suspension, Pneumatic servo system, Simultaneous optimum design, Structural systems, Control systems, Sensitivity analysis, Frequency shaped optimal control method
Abstract
In this paper, we propose the simultaneous optimum design method of structural and control systems for an active suspension using a sensitivity analysis. We deal with an analytical half-car model based on the experimental equipment which has a pneumatic servo type active suspension. Control design variables are spring constants, viscous damping coefficients, cylinder sectional areas, piston strokes and a wheelbase. We used the steepest descent method as search algorithm. We investigated the performance of the proposed control method from numerical simulations. From some simulation results, we confirmed that the proposed method was useful for the control of the bouncing vibration and pitching vibration, compared with the control performance in the case of using the conventional optimal control methos that doesn't optimize the structural systems.