毕业论文

【Abstract】：

With the development of modern cities, an increasing number of high-rise building,

elevator become an indispensable means of transport of daily life. The quality of the lift

performance of the impact on people's lives becoming more and more obvious, it must

strive to improve the performance of elevator systems, and ensure the operation of the

lift is safe, reliable and energy efficient.

The traditional elevator control system uses logic of

the relay to control circuit, this kind of controls easily to be crash, maintains inconveniently, the

movement life is short, and that occupying a large area of space, it being eliminated gradually.

For raising the credibility of the automatic control system and the work efficiency of the

equipments, design a set of take PLC as the core controller of the elevator auto control system, using

to replace former more complicated of after electric appliances-the contact machine control. The

core part(control part) of the system used a Japanese Mitsubishi company to produce of the FX2N -

80 type PLC is the software procedure control in the core because of what to control the part

adoption, thus Be promising the elevator circulates normally under the circumstance of[with] this

request, raised elevator to break down check and the convenience and easy for maintain consumedly,

still overcame to move an operation some artificial interference factors bring in the meantime, obtain

the good results.

KEYWORDS

: Elevator, PLC, Ladder Diagram