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本文讨论了三种用于纯滞后过程的观测补偿器控制方案。第一种方案与Smith预估补偿方案进行了比较,表明它具有实施方便、对于对象模型参数的变化不灵敏以及稳定性较好等优点。第二种方案与前馈控制相类似,通过合适的观测补偿器参数的选择,可以完全补偿可测干扰的影响。第三种方案综合了前两种方案的优点,它不仅有良好的稳定性,而且有较强的适应能力。数字仿真的结果表明这类观测补偿器控制方案还可适用于对象是时变或者非线性的系统。
This article discusses three observation compensator control schemes for a purely hysteretic process. The first scheme is compared with Smith’s estimated compensation scheme, which shows that it has the advantages of easy implementation, insensitive to the change of the object model parameters and good stability. The second option is similar to the feedforward control. The choice of suitable observer compensator parameters completely compensates for the effects of measurable disturbances. The third option combines the advantages of the first two options, which not only has good stability, but also has a strong adaptability. Numerical simulation results show that this kind of observer compensator control scheme can also be applied to the object is a time-varying or nonlinear system.