Research And Design On Neural Control Of Magnetic Levitation Floating Raft Isolation System

Mechanical vibration widespread and affect people's daily life deeply. Therefore, people has committed to the development of vibration theory about the vibration of the phenomenon since the thirties of the last century. From the simple single-layer vibration isolation to the double-layer vibration isolation and from the double-layer vibration isolation to the raft isolation. People enrich the theory of active vibration isolation from simple passive vibration isolation to active vibration isolation. Associating with the phenomenon of vibration, people gradually deepen the theory of vibration control.In the paper, make the magnetic bearings as a part of the active vibration isolation system to study the control characteristics about the low-frequency mechanical vibration. In this paper, Analyze the suspension isolator system control theory and mathematical and physical meaning as the executing agency Magnetic Bearing detaily and deeply, clear the control structure of magnetic levitation.Apply Active magnetic levitation devices to the isolation system of raft, and Using of its the advantages of stiffness and damping which can be controlled in system to study the control characteristics of floating raft of magnetic levitation. And make a study and design about the layout of suspension isolator and exciting way in floating raft.Select the signal excitation for the complexity of the floating raft scientifically and rationally, as well as excitation mode. Referring for drive and control technology in magnetic bearing motor, study the cascade control on floating raft of magnetic levitation.Discuss the power amplifier research methods and design process in the inner loop control system. Especially study the PWM current-tracking technology on electromagnetic coils, which have large inductance by theoretical studies and experimental tests. Various parts of the system are discussed in detail in this particular environment Study the eddy current displacement sensor and make the relevant signal switching circuit design and PCB design. In the magnetic context, study using development of protel software about the circuit board and development programs.Use PID control theory and experiments in the outer loop and more robust algorithm. According to complexity of floating raft system and the non-linear characteristics of the electromagnetic coil, select neural control, comparing with the fuzzy and other intelligent algorithms. simulate and debug algorithm in detail for the different Control performance. Use Visual C++6.0 to design and developthe serial debug software,under the needs of platform debugging.