Implementation of a PID Controller Using Siemens PLC

PID控制器 电动机软起动器 控制器(灌溉) 西门子 转换器 工程类 人口 控制理论(社会学) 背景(考古学) 自动频率控制 控制工程 计算机科学 电气工程 控制(管理) 电压 温度控制 社会学 人口学 古生物学 人工智能 生物 农学
作者
Georgel Gabor,Gheorghe Livinţ
标识
DOI:10.1109/epe56121.2022.9959869
摘要

Due to growth of the population, the demand for food has increased lately and will continue to do on the next years. In this context, one of the most important matters is the control and monitorization of the irrigation systems, which help agriculture to be more productive. Any pumping station depends on the flow that is delivered to the end users. The electrical cabinets in a pumping station contain frequency converters and soft starters that actuate the pumps electric motors. In this paper, the control of a pumping station is analyzed and implemented with the help of a PID controller, where the water pressure must be maintained at the value of 6 bars. In this case, a solution is proposed with a frequency converter that will maintain the pressure at the specified value and if the flow rate increases, then additional pumps will be started, operated by the soft starter. To operate a pump, at a given time, a selector will switch the pump to either the frequency converter or the soft starter. When the station is switched to automatic mode, it will not be allowed to change the pump from the frequency converter to the soft starter or vice versa. To maintain the reference pressure, a PID controller implemented in the PLC program will be used. The pressure is referenced to 6 bars and will be managed by the PID controller designed in the PLC program. The performance results of the PID controller can be displayed on the running screen for different values of the controller parameters.

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