Improved Position Control of Electro Mechanical Actuator Utilizing Optimal Current Trajectory Control

Abstract:

Electro mechanical actuator (EMA) is an important type of power-by-wire (PBW) actuator. The dynamic performance of EMA is a key issue especially when it is mounted on a fighter aircraft. Generally, the EMA adopts permanent magnet synchronous motor (PMSM) as the drive unit. It is a position controlled cascade system with an inner current control loop. This study focuses on the current control loop and proposes a scheme which utilizes optimal current trajectory control to exploit the inherent torque capability of the motor. Compared with traditional current control, i.e. id=0 strategy, the torque capability of the motor is maximized and the speed range is expanded. This directly improves the EMA dynamic performance. Faster transient process is demonstrated experimentally, which verifies the efficiency of the proposed scheme.

• Periodical: Applied Mechanics and Materials (Volume 551)
• Pages: 548-554
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.551.548
• Online since: May 2014
• Authors: He Song Liu*, Yong Ling Fu, Juan Chen, Hui Chen
• Keywords: Dynamic Performance, Electro Mechanical Actuator, Optimal Current Trajectory Control

References

[1] S. Croke and J. Herrenschmidt, More electric initiative – power-by-wire actuation alternatives, Aerospace and Electronics Conference, NAECON, Proceedings of the IEEE 1994 National, 23-27 May 1994, pp.1338-1346.

DOI: 10.1109/naecon.1994.332886

[2] S.C. Jensen, G.D. Jenney, D. Dawson, Flight test experience with an electromechanical actuator on the F-18 systems research aircraft, The 19th Digital Avionics Systems Conferences, Oct. 2000, Proceedings. DASC, vol. 1, pp. 2E3/1 - 2E310.

DOI: 10.1109/dasc.2000.886914

[3] Y.L. Fu, H.S. Liu, Y. Pang et al, Active disturbance rejection control for the PMSM used in the direct drive EMA, Journal of Sichuan University (Engineering Science Edition), 2011, 43 (2): 121-12.

[4] SUN Kai, XU Zhen-lin, GAI Kuo, DOU Ru-zhen, A novel position controller of PMSM servo system based on Active Disturbance Rejection Controller, Proceedings of the CSEE, vol. 15, no. 27, May 2nd 2007, pp.43-46.

DOI: 10.1109/icems.2011.6073955

[5] Tan Yaolong, Chang Jie, Tan Huanlin, Adaptive back stepping control and friction compensation for AC servo with inertia and load uncertainties, IEEE Trans. on Industry Electronics, vol. 50, no. 10, pp.944-952, (2003).

DOI: 10.1109/tie.2003.817574

[6] Cao Xainqing, Zhu Jianguang, Tang Renyuan, Vector controlled permanent synchronous motor drive with adaptive fuzzy neural network controller, Proceedings of the CSEE, vol. 26, no. 1, pp.137-141, (2006).

DOI: 10.1007/11539902_146

[7] Malik E. Elbuluk, M. David Kankam, Motor drive technologies for the power-by-wire (PBW) program: options, trends and tradeoffs, National Aerospace & Electronics Conference, Wright-Patterson AFB, Ohio, May 23-27, (1995).

DOI: 10.1109/naecon.1995.521986

[8] S. Morimoto, Y. Takeda, and T. Hirasa, Expansion of operating limits for permanent magnet motor by current vector control considering inverter capacity, IEEE Trans. Ind. Applicat. , vol. 26, no. 5, p.866–871, Sep. /Oct. (1990).

DOI: 10.1109/28.60058

[9] Y.F. Shi, Z.Q. Zhu, Y.S. Chen and D. Howe, Influence of winding resistance on flux-weakening performance of a permanent magnet brushless AC Drive, in Proc. Int. Conf. Power Electronics, Machines and Drives, 2002, IEE, pp.392-397.

DOI: 10.1049/cp:20020149