基于dSPACE的永磁无刷直流电机驱动控制系统设计与开发

　　基于dSPACE的永磁无刷直流电机驱动控制系统设计与开发
　　Because of the advantages of no excitation loss, simple structure, high reliability, easy maintenance, high operation efficiency and good speed performance, the permanent magnet brushless DC motor (BLDCM) has been widely used in various fields, such as computer systems, household appliances, transport, as well as medical equipment. Nowadays, many intelligent control algorithms, which have functions of self-learning, self-adapting and self-organizing, are Neodymium Magnets being used to enhance the BLDCM operational effectiveness. However, it usually takes a long time to complete the algorithm development for the reason that the BLDCM is a multi-variable, non-linear, strong coupling target which is difficult to establish its precise mathematical model.
　　Therefore, a 2.2kW BLDCM is selected and then a new method of rapid developing drive control system of BLDCM is proposed in this paper.First of all, dSPACE, which is a type of real-time simulation tool and is produced by a German company, is introduced in this paper, including its hardware components, software environment, real-time simulation function and the steps of using dSPACE to develop control algorithm. And we conclude that the development progress of BLDCM controller can be apparently accelerated by using hardware-in-the-loop simulation (HILS) technique based on dSPACE.Secondly, the speed solution of a 2.2 kW BLDCM is specified http://www.999magnet.com and then the corresponding drive system is designed, including the rotor position detection subsystem, the power supply subsystem, and the inverter circuit subsystem etc. Sequentially, a HILS platform of BLDCM drive control system based on dSPACE is presented, corresponding functional modules are defined, and then a rapid control prototype (RCP) of BLDCM is designed. Among them, four digital models are created by using Matlab/Simulink, and their interfaces with external hardware are created by using dSPACE/RTI.Finally, in order to testify the feasibility and the effectiveness of the proposed method, it is applied to develop a new generation of commercial treadmills for a well-known domestic enterprise. The characteristics of the commercial treadmills’load and transmission are analyzed, solutions of key issues associated with its special requirements are presented, and then a drive and control system of commercial treadmills based on the BLDCM is developed.Experimental results validate the proposed method. It is very promising for practical applications.