串联渠系PID改进积分与微分环节仿真研究

发布时间：2018-02-03 01:43

  本文关键词： PID算法 非恒定流 自动控制 渠系运行　出处：《灌溉排水学报》2017年02期 　论文类型：期刊论文

【摘要】：渠道系统自动化运行是提高明渠输水系统水资源利用效率的有效途径,其基本思路是通过节制闸的实时调节维持渠道内的水位、流量在一定的目标状态。经典PID控制算法在应用到渠道控制中存在微分环节极易引起超调甚至系统失稳的问题,因而实际渠系控制器多采用比例积分环节(PI),其缺点是响应缓慢。为了提高渠系控制的响应速度、减小系统调节动作量,在PID算法的积分环节中引入启动阈值,并采用惯性环节串联补偿微分环节。采用ASCE的标准渠道测试算例进行建模仿真,计算结果表明改进算法在传统PID算法的基础上降低系统超调、减少闸门的调节量;在PI算法的基础上提高系统响应速度。
[Abstract]:The automatic operation of canal system is an effective way to improve the efficiency of water resources utilization in open channel water conveyance system. The basic idea is to maintain the water level in the canal through the real-time regulation of the sluice. The classical PID control algorithm can easily cause overshoot or even system instability in channel control. In order to improve the response speed of canal system control and reduce the regulating action of the system, the actual canal system controller usually uses the proportional integration link PII, which has the disadvantage of slow response. The starting threshold is introduced in the integral link of PID algorithm, and the inertial link is used to compensate the differential link in series. The standard channel test example of ASCE is used to model and simulate. The results show that the improved algorithm can reduce the overshoot of the system and reduce the adjusting amount of the gate on the basis of the traditional PID algorithm. Based on Pi algorithm, the system response speed is improved.
【作者单位】： 武汉大学水资源与水电工程科学国家重点实验室;贵州省水利水电勘测设计研究院;
【基金】：国家自然科学基金重点项目(51439006)
【分类号】：TP273;S274
【正文快照】： 0引言 渠道系统自动化控制是灌区管理信息化、自动化的重要标志。渠系自动化提高了渠道运行调度的水平,改善水的输送效率,提高水资源利用率。目前,国内外灌区及调水工程大都为人工控制,水资源利用率较低、反应缓慢、需要大量操作人员,实现渠系自动化控制是解决上述问题的有效，

本文编号：1486054