Distributed Stage Mechanical Computer Control System Research And Development

The project is supported by the fund of natural science of Gansu province. The thesis focuses on the research of the topology and control methods of modern theater based on fieldbus control system.First, the present status of stage control system ,including the trend and trait of stage mechanic control system are reviewed in this thesis. Then, the basic principle of control system based on the PLC .fieldbus and Schneider eiectric's "transparence factory" is discussed. Combining the stage device control system and Schneider Eiectric's automation network together, the author puts forward two kinds of distributed construction which severed for ZongZhen Opera House and ZhongShan Showplace . The methods relating with the study of communication ways between different controllers on varies fieldbuses are studied. The author's own opinion about the selection of Ethernet fieldbus or other fieldbuses at the low floor of stage mechanical control system is also brought forward. It proves that only we select our project according to the real situation than we can prompt the performance of a control system best. Facing with the crucial problems on stage mechanical control system, two applications are discussed in this thesis: communicating with transducer and using high speed counting module produced by Schneider electric. In order to improve the performance of controlled elevating platform, a modified ADALINE NN is put forward to simplies the complicated nonlinear implicit function into a simple quadratic function.