基于Rockwell PLC的电梯位移控制的实现

Implementation for the Displacement Control of a Elevator Based on the Rockwell PLC

详细介绍了通过脉冲计数的方式实现10层电梯位移控制的机理。其中,首先介绍了10层电梯控制系统的硬件组成、软件实现以及脉冲选层的原理;之后分析了Rockwell的CompactLogix系列PLC的工作方式及系统的通讯方式、软件组态,并介绍了用于实现脉冲计数的硬件电路的设计;最后通过对实验结果的分析,探讨了影响电梯平层精度的因素并提出了相应的改进措施。实验表明基于CompactLogix控制器的电梯控制系统采用脉冲计数方式可取得较高的平层精度。

The implementation for the displacement control of a ten floor elevator by pulse count is intro- duced, First, introduces the hardware composing and the software program of the ten-floor elevator control system, analyzes the principle of chooseing the floor of the elevator via pulse count. Second, both the working mode of CompactLogix series of Rockwell PLC, communication method and the software configuration of the system, and the circuit design for the pulse count, are described in detail respectively, Through the analysis of the experiment results, discusses the factors affecting the layer precision of the elevator, and finally presents, the improving measures. The experiments prove that, based on the CompactLogix controller and by pulse count, the elevator control system is proved quite a high layer precision.