Abstract
In on-off control systems, it is well known that desirable characteristics may be obtained by proper design of the feedback-compensator. In many of the studies in this field the validity of theoretical results has been confirmed by use of analog computer.
In this study the authors made a thermal process and a dead time element for on-off signal, which are the controlled system of on-off control with feedback-compensation. The effects of system parameters on the dynamic response and the optimum settings of adjustable parameters are experimentally investigated.
As an experimental result, it is found that the validity of the theory about on-off control system with feedback-compensation is evident, the response of on-off control is improved by the feedback-compensator, and the effects on the amplitude of the limit cycle due to the width of hysteresis in on-off control element and the value of dead time in controlled system are greatly weakened by the optimally set feedback-compensation.
