• a relay-based method for servo performance improvement

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 929
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this paper proposes a relay-based performance-improving method for servo mechanism systems. the method first utilizes a relay-based feedback technique to identify the model parameters and the coulomb friction value. then, based on the identified results, a control algorithm, which consists of a feedforward controller, a time-delay compensator and a sliding mode controller, is designed. the feedforward control-ler and the time-delay compensator are used to compensate the system dynamics and the external dis-turbances respectively. their parameters are decided directly according to the identified values. the sliding mode controller is to stabilize the system, two of whose parameters are one-to-one mapping to the closed-loop characteristic roots. thus, this method avoids the complicated parameters tuning process, which is attractive in practice to the control engineers. experimental studies on a linear-motor-driven table illustrate that the proposed method is capable of improving the servo performance greatly and can-celing the external disturbances effectively

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