Research And Application On Intelligent Control Of Multi-motor In Driving System Based On PROFIBUS-DP Bus

Multiple motors have been used for driving systems widely in recent years to meet the increased requirement of driving systems. In order to improve the dynamic and static performances, and to increase the load ability of the system, the problem of synchronized drive of multiple motors must be taken seriously, thus, the synchronized control of multiple motors is very important. A successful synchronized control scheme must control both the speed and the moment .In this sense, synchronization refers to controlling current and velocities of the motors relative to each other so that they remain well-coordinated.In case of synchronization for multiple motors, the real time data communication is necessary. In order to satisfy this requirement, the complex signal lines are usually used to detect the speed and current of each motor and to command the desired speed and moment. Such a traditional implementation technique induces many problems in the view of reliability and economy because of the amount and complexity of wiring, noise and maintenance problems, etc. In order to remove these problems, a simple synchronization system with the aid of serial communication using PROFIBUS-DP is proposed in this paper. In this case, inflexible and expensive special wiring is not necessary. Furthermore, the system can be modified in terms of network nodes without changing the wiring.In this system ,the most important thing is to precisely synchronized control of the speed and the moment .Base on this requirement, put forward arithmetic of Intelligent Control, focus to characteristic of multiple motors' synchronized control, the control of Neural Network has been choosen ,and set up all-purpose system ; at last, validates this system by the application of all digital reconstruct of the WuYang steel company's clamping crane.