Abstract
Active control methods are used to suppress vibrations in a pneumatic isolation table. To suppress vibration for large displacements, it is necessary to switch the control input instantaneously to the maximum or minimum input values. Therefore, active control by quantized input generated using on-off valves is suitable. To obtain high performance, it is necessary to consider the quantized action by on-off valves and input time-delay that arises from loss of pressure. In the present paper, the model predictive control method for quantized control input systems is proposed. The control input is restricted to quantized values, so the optimum control input is calculated by solving the optimum problem in real-time. Effectiveness of the proposed method is verified by numerical simulations and experiments.
