煤化工炼焦推焦车自动走行控制系统的研制

研究了PLC用于煤化工炼焦推焦车走行自动控制，实现炉号识别、自动定位功能等的方、法。本系统采用PLC二进制编码原理和位置式接近传感器实现自动炉号识别；采用数字控制变频调速器驱动电机，采用AD61高速计数模块进行反馈修正位置误差，探讨了离散数字处理增量式PID控制算法进行位置误差补偿的条件，保证推焦车自动走行过程中的自动精确定位；通过RS485实现PLC与上位机的通讯和报表管理。该方法和算法研制的系统在实际的推焦车控制系统中得到成功应用。

Developing of Auto-control Position System in Push-coke Machine

The auto controlling based on PLC system realized the identifying of coking number and the accurate position.In this system the identifying of coking number was reached with the schematic binary system of PLC and the assistant of proximity sensor.With RS485 ,the digital was used for transducer controlling port which drive the motor and the high speed counter, AD61, was used for feedback adjusting the offset.The discrete digital increasing PID control algorithm compensating the position errors is discussed to arrive at the accuracy auto position.With the module ,RS485,we realize the serial communication and the report forms managing between the PLLC system and the computer.The technique can achieve the object of automatic control accuracy in practices.