plc在加熱爐溫控制系統(tǒng)中的應(yīng)用(外文翻譯)-plc設(shè)計(jì)-文庫(kù)吧資料
2025-01-27 06:45本頁(yè)面
【正文】 uses second methods, by two timer T200 and T246 produce a PWM wave, T246 decided to transfer power cycle, in order to ensure the normal conduction of the thyristor main circuit, to ensure normal work, PLC output pulses and frequency to maintain strict synchronization relationship, therefore, will and power grid synchronization and to keep frequency relationship of basic digital pulse into the PLC input, as the timer T246 logic control signal, T200 decided to pulse width, delay time t by PID operation output value MV decision. 5 conclusions In the control system of the furnace, the PLC is called when the builtin PID calculation program, realized PID control algorithm based on call, simplify program, improve the programming efficiency, and is not easy to make a mistake, the temperature reached the goal of accurate control。 外文翻譯 譯文： ＰＬＣ Ｔｅｍｐｅｒａｔｕｒｅ Ｃｏｎｔｒｏｌ ｏｆ ａｎ Ｅｌｅｃｔｒｉｃ Ｈｅａｔｉｎｇ Ｆｕｒｎａｃｅ Ａｂｓｔｒａｃｔ： Ｔｈｉｓ ｐａｐｅｒ ｉｎｔｒｏｄｕｃｅｓ ａ ｔｅｍｐｅｒａｔｕｒｅ ｃｏｎｔｒｏｌ ｓｙｓｔｅｍ ｆｏｒ ｆｉｎ ｅｌｅｃｔｒｉｃ ｈｅａｔｉｎｇ ｆｕｍａｃｅ ｂａｓｅｄ ｏｎ ｔｈｅ ＰＬＣ ｔｅｃｈｎｏｌｏｇｙ ａｎｄ ｔｈｅ ｅｌｅｃｔｒｏｎｉｃ ｒｅｃｔｉｆｉｅｒ ｔｅｃｈｎｏｌｏｇｙ．ｙ．Ｔｈｅ ｈａｒｄｗａｒｅ ａｎｄ ｓｏｆｔｗａｒｅ ｏ ｆ ｔｈｅ ｓｙｓｔｅｍ ａｒｅ ａｌｓｏ ｏｕｔｌｉｎｅｄ． Ｋｅｙｗｏｒｄ： ｐｒｏｇｒａｍｍａｂｌｅ ｌｏｇｉｃ ｃｏｎｔｒｏｌｌｅｒ；ｈｅａｔｉｎｇ ｆｕｒｎａｃｅ；ＰＩＤ 1 Introduction Hot stove using simple bit type constant temperature control method, temperature control precision is not high, the temperature control is of unidirectional rising, large inertia, large time delay, timevarying characteristics, and the heating, thermal insulation is dependent on the resistance wire heating, cooling, rely on the natural environment for cooling or add furnace material, once the overshoot is difficult to use control means to bring the temperature. According to mathematical model of controlled object is difficult to determine precisely the characteristics, the system consists of PLC as the core controller, according to the temperature change of the PID controller, the collection of temperature data, and then through the PLC output control, regulating thyristor conduction, to achieve accurate control of temperature. In this paper, the control object is monly used in the metallurgical industry in HX1 type electr
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