The Development Of The Controller Of VVVF Elevator

Elevator is a convenient vehicle which has been widely used in modem society. In traditional the elevators are usually driven by DC motors. But because of some disadvantages such as their complex configuration, costliness, inconvenience of maintenance, they are gradually replaced by asynchronous machines. Beside this, with the time goes by our building is built more and more huge so one elevator in a building can' t satisfy by people, which make elevator group control system become necessary.In this paper, at the first, based on the introduction of the elevator' s basic structure, introduction the drive and control principle of elevator, and analyzes how to use the PLC to program controlling process. The implementation project of elevator's VVVF control system based on PLC of Siemens and transducer of SIEI is studied and proposed.Secondly, based on several intellective arithmetic of elevator group control system, a new arithmetic is put forward based on the theory of multi objective fuzzy synthesis judgment. And using both simple genetic algorithm and multi-group genetic algorithm, this thesis optimizes the relative parameters.