On-line safety monitoring for disk braking system of rope-less elevator

The rope-less elevator driven by permanent magnet linear synchronous motor (PMLSM) is a revolutionary new technology for high-rise buildings. In the practical operation, PMLSM inevitably encounters various kinds of turbulences which directly affect the rope-less elevator's safe and steady operation. The function and structure of disk braking system of rope-less elevator is introduced in this chapter. The influencing factors of disk braking system are analyzed, and the research on safety monitoring system technique is made. Combining with practical situation, it is concluded that physical quantity being inspected, the on-line monitoring model is established with modern control method. The monitoring system is developed by programable logic controller to achieve on-line momtoring and alarm of given physical quantity, storage and fetch of important parameter, and search of operating trouble record so as to realize the on-line monitoring safety of braking system. © 2012 Springer-Verlag London Limited.