A New Elevator Running Speed Control Method Based On Ddt,rdt Principle And Elevator Control System Research

After the research on VVVF(Variable Voltage Variable Frequency) elevator running speed control and elevator control system,this thesis proposes a new speed control method,that is based on DDT(Desired distance travel) and RDT(Remaining distance travel) principle speed control technique,and then designs elevator control system.Using CAN bus to communicate with other peripheral equipment. The main contents of the research are as follows:1. Analyzing the current situation of the development of elevator control technology and the method of elevator running speed control.2. The elevator control system principle analysis and hardware design. The hardware part mainly includes: the design of the main controller.3. The speed control algorithm is designed. After comparing and analyzing other curve types, choosing sine - beeline curve as elevator's ideal speed curve. By using DDT and RDT principle speed control technique to control running speed. It mains while in accelerating phase based on desired distance travel, while in decelerating phase based on remaining distance travel.4. The software is written. The software that this part mainly includes: the main controller of the elevator and the speed monitor software. The speed monitor software which can get the real speed and show curve in real time.5. Finally, build the experiment platform, debug and operate it with result analysis.