The Adcm Elevator Speed Control System

Based on the analysis of the several lift running control systems, the thesis carries out a new ADCM(Absolute Distance Control Model) running control system for lift. This system can largely improve the running performance of lift. This thesis designed and manufactured highly intelligent ADCM controller, which not only runs credibly, but also cost lowly. This thesis concludes the following parts:l.The thesis shortly describes the development of lift running control technology and the point of modern method. The difficulties and inventions were carried out.2.The thesis compares several current well signals and analyses the current running methods of lift. The shortages of them were carried out.3. The ADCM system was brought forward. The system has two closed loops. One is velocity feedback, the other is absolute position feedback. Because of the time lag in the system, Smith arithmetic for compensating time lag was used in the system. Based on the analysis of the current lift velocity curve, sine curve was used as the ideal velocity curve of the system.4.The hardware design of the ADCM controller was carried out. The function and how to design of every module of the controller was illuminated. The thesis also explains how to design the function models, (such as communication model, curve building model and control arithmetic model etc.) in the software of the controller. The method of corresponding these models was also illuminated.