中文摘要：

为了提高明渠输水系统控制器的控制效果，在输水系统的运行过程中需要对控制器的控制参数进行整定．以渠池为研究对象，分析了闸前常水位运行模式下渠道的水力响应特性，得到了与扰动量大小无关的敏感性指标．分析了敏感性指标随输水流量的变化规律，给出了控制器参数与敏感性指标之间的计算公式，数值模拟表明，采用提出的计算公式可以提高渠池的控制效果．研究成果对明渠输水系统的控制运行具有一定的指导意义．

英文摘要：

The controller parameters should be tuned to improve the operation performance of canal system. With canal pool as the subject of study, the hydraulic response characteristics of canal system under constant downstream water depth method were investigated, and a sensitivity indicator was presented, which does not rely on the strength of disturbance. The relationship between the sensitivity indicator and the flow rate was analyzed, and two formulas de- scribing the relationship between the proportional and integral constants of PI controllers and the sensitivity indicator were presented. Numerical simulation results show that this method can improve the control performance of the canal system. This method is very useful for the operation of canal system.