2009年PLC外文翻译--PLC变频控制的水泵系统

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1、2300 英文单词， 11500 英文字符 ，中文 3500 字 文献出处： Ali A, AL-Soud M, Abdallah E A S. Water pumping system with PLC and frequency controlJ. Jordan Journal of Mechanical and Industrial Engineering ,2009,3（ 3） :216-221 Water Pumping System with PLC and Frequency Control Akayleh Ali, Mohammed Al_Soud, Essam Abdalla

2、h, Salah Addallah Abstract In this study controlled water pumping system is designed, constructed, and modeled. The programming method of control of pumping flow rate is achieved by means of integrated programmable logic controller (PLC) and frequency inverter (FI). PLC main function is to determine

3、 the required flow rate levels and the related time intervals of the flow rate hold time. (FI) is used to control the dynamic change of temperature between various operating points. The designed system shows the capability for full control of pumping flow rate from zero to maximum for any required r

4、ange of time in case of increasing or decreasing the pumping flow rate. All variables of the system will be changed gradually until reaching their needed working points. The mathematical model of water pumping system with PLC and frequency control is built based on MATLAB- SIMULINK . A test rig buil

5、t and an experimental study was performed. From the analysis of the experimental starting dynamic characteristics of water pumping system and modeled characteristics, it was noticed that they are very similar. Keywords: PLC; Frequency Control; Water Pumping System; Dynamic Characteristics. 1. Introd

6、uction Pumping equipments in the modern manufacturing systems may be used as main parts in many industrial activities, like chemical industries, food industries, etc. The automation of the pumping processes in those industries will certainly lead to improve their performance 1.In Jordan about 18% of generated electrical power is consumed by three-phase-induction motors driven centrifugal pump in water pumping stations. From the analysis of the working conditions of water pumping systems, it