【摘要】 工业控制中许多对象都具有纯滞后特征 ,对纯滞后系统的控制问题进行研究 ,具有理论意义和实际应用参考价值。在纯滞后系统中 ,由于对象存在纯滞后时间τ ,因此常使人觉得 ,对这类系统的控制 ,采样周期选择为τ控制效果比较好 ,而一些文献也执此观点。为探讨纯滞后控制系统中采样周期的选择问题 ,用数字仿真方法 ,对选择不同采样周期的控制效果进行了计算 ,对采样周期的合理选择问题进行分析。数字仿真结果表明 ,对纯滞后控制系统 ,有关文献给出的采样周期T选择为纯滞后时间τ的结论是不合适的 ,其控制效果并不好更多还原

【Abstract】 For the vast objects in industry control,the specific delay feature exists . It is valuable to study the control problem of the system with pure delay for control theory and control engineering. Because there is pure delay time τ in the object , so it is taken to be better choice that the sample period T is equal to pure delay time τ , and some literature persists in this opinion also . In order to study sample period’s influence on the system , the author carried on calculation for this problem , using digital simulation method. The system’s control effect caused by the choice of different sample period is calculated and analyzed , and the reasonable choice problem of sample period is discussed . The research result shows it is not suitable that the sample period T is chosen to be the system’s pure delay time τ for the control system with pure delay.更多还原