基于PL C的桥式起重机挠度误差调整系统

摘要

针对桥式起重机主梁在自重和载荷的作用下会产生下挠的现象，及由于主梁的下挠现象所产生的小车运动误差，提出了一套误差补偿方法，应用激光挠度测量仪测量挠度误差，依靠PLC的PID控制模块将梁在不同时刻的误差记录下来，再转换成小车方向的误差并将误差值送给PLC系统，PLC系统再将误差转化成小车运动，补偿梁的下挠产生的误差。%In view of down-wrapping occurring to the girder of overhead crane under the action of self-weight and load-ing,and kinematic error of the trolley arising from down-wrapping,the paper puts forward the error compensation method to measure the deflection error with the laser deflection measuring gauge,record the errors of the beam at different times using the PID control module of PLC,convert them to the directional errors of the cart,and send the errors to PLC system in or-der for PLC system to convert the errors into the cart motion,to supplement the errors arising from beam down-wrapping.