【摘要】 选用PLC作主控制器,采用升调平技术设计出4点自动调平系统.具有原理简单,控制性能稳定可靠等优点.该系统调平时间短,满足性能指标要求,可广泛地应用于各种调平系统中.更多还原

【Abstract】 A four-point automatic levelling system is designed with PLC as master-control device by using rise-levelling technology in this paper. The system has the advantages of simple principle, stable and reliable control property. The speed of leveling is very fast and it is proved to be able to satisfy the expected control goal, so it can be widely applied to different kinds of leveling system.更多还原