Abstract: This paper discusses different drive control methods of electric vehicle (EV), presents the design of H∞ robust controller for driving control, with the consideration of protecting the battery. Research work is done under different conditions namely variable battery voltage and variable load rotational inertia separately. Experiments show that the H∞ robust controller has better performance than the PID controller in both steady-state tracking error and response speed. Moreover, the H∞ robust controller can improve the drive range of electric vehicle.
215
Authors: Hua Ji, Zhen Yun Han, Hong Li Liu
Abstract: Direct torque control (DTC) technology in asynchronous motor is one of new frequency transformation drive technology after the vector control technology. In recent years people begin to apply it to the synchronous motors. This paper introduces the application station of direct torque control in permanent magnet synchronous motor drives, discusses several key problems and analyses its development direction in the future.
713
Authors: Luo Ren Liu, Jin Ling Luo
Abstract: This article starting from the real engineering, have a deep search on permanent magnet synchronous motor servo system, analyzed the main research focus on permanent magnet synchronous motor control, focused on the mathematical model of permanent magnet synchronous motor, made some meaningful results. Basing on modular design principles, this article have a deep application research on design of permanent magnet synchronous motor DSP conducted, proposed DPS design, has a detailed analysis of permanent magnet synchronous motor servo system software design.
1465
Authors: Si Ping Zhou, Jing Shi, Tao Jin, Qing He, Li Ren, Yue Jin Tang
Abstract: Current source converter (CSC) can control power transfer between superconducting coil and the AC power system, which is the key component of superconducting magnetic energy storage (SMES). This paper presents an improved state-feedback control for CSC of SMES. Adopting the discretization method, the design of decoupled state-feedback control system is simple and straight. To overcome the drawbacks of the discretization method and improve the control system dynamics, the effect of the control time delay is considered. Furthermore, by selecting the current error vector and the output voltage error vector as the additional state variables, a linear state feedback loop is added to the control system to achieve the feature of deadbeat. The steady state performance and dynamic response are investigated. MATLAB simulation is performed to evaluate the performance of the proposed control method.
1049
Authors: Yun Song Li, Jie Meng, Ye He
Abstract: Due to the structural characteristic, the dynamic performance of the high speed spindle is influenced by multi-coupled parameters. Conventional control method can’t attain the satisfied control result. So the view of internal model decoupling control of high speed motorized spindle is put forward, which can improve the performance of vector control system. In this paper, mathematical model based on internal model control of high speed spindle is set up. And voltage and current of stator are decoupled. At last, through simulation, it is proved that the method can improve the control effect and has better robustness, dynamic characteristic. Therefore, internal model decoupling control of high speed spindle is feasible and effective.
1496
