Parameters Optimization Of Electromagnetic Brake And Its Digital Control System

Electromagnetic brake has been widely applied in all kinds of automatic device at present, such as lift machine, mine machine and seaport device, and it can guarantee the large removable device run safely. So the Electromagnetic brake problems that found in application are worth studying problems. We mainly carry our research and optimization design from two aspects of electromagnetic system and control system.Firstly, carry on a detailed investigation in the framework, process and control method of electromagnetic brake. Carry analyze and calculate on the magnetic circuit, and accomplish the suction simulate calculation based on Matlab, and obtain the electromagnetic suction characteristic.Then, do a detailed research on the basic theory and method of genetic algorithm (GA), and improve the standard genetic algorithm (SGA), and carry illuminate and test using mathematic functions on the improved genetic algorithm (IGA); We also establish the optimization model of electromagnetic coil with the objective function is temperature rise and the constraint is suction, and then carry optimization design on electromagnetic coil using IGA, and obtain the reasonable parameters.Additional, in order to solve the multiobjective optimization design problems better, we present a new multiobjective optimization algorithm, called multiple objective bacterial colony chemotaxis algorithm (MOBCC). MOBCC is evaluated on a series of standard test problems, the simulation results show that the strategy is generally valid and better than the others in most case; The multiobjective optimization model of electromagnetic coil is established, and the optimization functions are temperature rise and suction of electromagnetic coil. Then we apply the new strategy to solve the design problem, and get a perfect optimal result.Finally, design the digital closed loop control system based on the analog circuit controller, and accomplish experimentation and test on the digital control system. Now the digital-based control system has been applied to the tipper system at one of the seaport, and the performance is perfect.