可逆冷轧机主传动系统的设计方案

摘要

随着经济社会的飞速发展，建设祖国的大业正处在飞速发展中，东部经济的飞跃发展携带西部建设的不断开发，因此我国要大力加快西部建设，建设离不开钢铁，钢铁是建设的脊梁，所以我们要大力开发钢铁资源，轧钢机广泛用于各个钢铁工厂中。

轧钢机即可逆冷轧机，可逆冷轧机的主传动系统采用直流电动机的晶闸管逻辑无环流可逆调速系统，以满足轧制工艺对轧机传动系统能实现无机调速，有较高的稳态控制精度，较高的抗扰能力，在起制动过程中加减速恒定等要求。

系统的主回路采用两组晶闸管变流器反并联的接线方式，既节省电源，又经济实惠，只需一个交流电源供电，由于无环流，不需要设置环流电抗器。

系统的控制回路采用典型的双闭环，保证生产工艺的要求，保证起制动过程中加减速恒定，通过给定积分器得到转速给定信号。利用调节器锁零电路，在系统处于停车状态，即速度给定电压为零，同时转速也的确为零时，将系统中所有调节器的输出都锁到零位上，避免了停车时各放大器零漂引起的晶闸管变流器有输出电压使电动机爬行。

关键词：直流调速逻辑控制无环流晶闸管稳态控制

Abstract

Fly socially to develop soon along with the now economy, the big industry of the developments motherland is being placed in to fly to develop soon, the eastern region leaps economicly the development takes western region our country want to be strongly. Developments quickly and western region, development can not get away from the steel, the is back of developments, so we want to develop strongly steel resources, the extensive application in the machine of rolled steel is in each steel iron works.

The machine of rolled steel then the machine of anti cold roll, can the main transmission system of the machine of anti cold roll adopt the thyristor logic non-circulation of the direct current motor can the specd control system to can realize to the stranding machine transmission system the limitless adjusting is soon, having the higher steady state control accuracy, higher anti-roa ability, add and subtract in rose braking process soon the heng settles the ect. Request.

The major loop of the system adopts two the method of wiring of set thyristor inverter anti parallels, since save the power supply, again economic real benefit, needs an ACR power supply, because of non-circulation, do not need to place the circulation the battery the anti-machine.

The control return adoption of the system typical a closed loops, guarantee the request of the production craft, guarantee to rise to add and subtract in the braking process soon the heng settles, passing to get the definite integral machine the revolving speed give to settle the sign. Make use of the modulator lock zero electric circuit, have the delivery of the modulator to all loke the electric potential of zero in system was placed in park the car condition, as soon as possible degree gave settle tension as zero, at the same time revolving speed too really for zero, system last, avoid the each amplifier in hour in engine room zeropiao cause thyristor inverter contain delivery tension make motor crawled along.

Key Words：The direct current adjust soon；Logic control for have no circulation；

Silicon transcstor；Stabilize control.