首页> 外文会议>Bath Workshop on Power Transmission and Motion Control (PTMC 2001) Sep 12-14, 2001, Bath >Robustness of some low-order controllers in an electrohydraulic position servo drive
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Robustness of some low-order controllers in an electrohydraulic position servo drive

机译:电液位置伺服驱动器中某些低阶控制器的鲁棒性

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The paper studies robustness of a hydraulic servo system with P-control, filtered P-control and state control. Both parameter and general uncertainties are expressed as a single multiplicative modelling error and controllers are tuned to guarantee stability despite this error. Robustness is analysed both analytically and experimentally and compared to typical performance based tuning of controllers. The effect of sampling on robustness is also analysed. Results show that the P-controller is not a robust solution unless extremely low gain is used. The filtered P-controller yields rather high-performance but still robust solution. The state controller is not robust against high-frequency modelling errors and it requires very short sampling time to retain robustness when realised as time discrete.
机译:本文研究了具有P控制,滤波P控制和状态控制的液压伺服系统的鲁棒性。参数和一般不确定性均表示为单个乘法建模误差,并且对控制器进行了调整以确保稳定性,尽管存在此误差。通过分析和实验分析了鲁棒性,并与基于控制器的典型性能进行了比较。还分析了采样对鲁棒性的影响。结果表明,除非使用极低的增益,否则P控制器不是可靠的解决方案。滤波后的P控制器可提供相当高性能,但仍很可靠的解决方案。状态控制器不能抵抗高频建模错误,当实现为时间离散时,它需要非常短的采样时间来保持鲁棒性。

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