대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2001년도 추계학술대회논문집A
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- Pages.507-514
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- 2001
해석적 Bode 방법에 의한 직접구동형서보밸브의 고전적 제어기 설계
Classical Controller Design of Direct Drive Servo Valve Using Analytical Bode Method
- Lee, S.R. ;
- Choi, H.Y. (ADD) ;
- Moon, Y.J. (ADD)
- 발행 : 2001.11.01
초록
Direct drive servovalve(DDV) is a kind of one-stage valve since the rotary motion of DC motor is directly transferred to the linear motion of valve spool through the link. Since the structure of DDV is simple, it is less expensive, more reliable and offers reduced internal leakage and reduced sensitivity to fluid contamination. However, the flow force effect on the spool motion is significant such that it induces large steady-state error in a step response. If the proportional control gain is increased to reduce the steady-state error, the system becomes unstable. In order to satisfy the system design requirements, the classical controller is designed using the analytical Bode method.
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