- Published:
Detecting the position of the moving-iron solenoid by non-displacement sensor based on parameter identification of flux linkage characteristics
Chinese Journal of Mechanical Engineering volume 26, pages 1204–1211 (2013)
Abstract
Currently, most researches use signals, such as the coil current or voltage of solenoid, to identify parameters; typically, parameter identification method based on variation rate of coil current is applied for position estimation. The problem exists in these researches that the detected signals are prone to interference and difficult to obtain. This paper proposes a new method for detecting the core position by using flux characteristic quantity, which adds a new group of secondary winding to the coil of the ordinary switching electromagnet. On the basis of electromagnetic coupling theory analysis and simulation research of the magnetic field regarding the primary and secondary winding coils, and in accordance with the fact that under PWM control mode varying core position and operating current of windings produce different characteristic of flux increment of the secondary winding. The flux increment of the electromagnet winding can be obtained by conducting time domain integration for the induced voltage signal of the extracted secondary winding, and the core position from the two-dimensional fitting curve of the operating winding current and flux-linkage characteristic quantity of solenoid are calculated. The detecting and testing system of solenoid core position is developed based on the theoretical research. The testing results show that the flux characteristic quantity of switching electromagnet magnetic circuit is able to effectively show the core position and thus to accomplish the non-displacement transducer detection of the said core position of the switching electromagnet. This paper proposes a new method for detecting the core position by using flux characteristic quantity, which provides a new theory and method for switch solenoid to control the proportional valve.
References
WANG Shuhong, XIONG Guangyu. Analysis of air-gap field in a new tubular linear PM motor with moving coil[J]. Transactions of China Electrotechnical Society, 2007, 22(5): 40–44.
XU Xiaoqing, QUAN Long, WANG Xuping. Principle and characteristics of novel 2-degree-of-freedom electro-mechanical transformers used in valves[J]. Proceedings of the CSEE, 2010, 30(3): 119–123.
SHI Shengjun, CHEN Weishan, LIU Junkao, et al. Ultrasonic linear motor using longitudinal and bending multimode bolt-clamped langevin type transducer[J]. Proceedings of the CSEE, 2007, 27(18): 30–34. (in Chinese)
WANG Shuhong, XIAO Xuliang, XIONG Guangyu. Direct current electromagnets with constant traction characteristic[J]. Chinese Journal of Mechanical Engineering, 2008, 44(2): 244–247.
CHEN Youping, DU Zhiqiang, AI Wu, et al. Research on model of a new short-stroke linear motor and its experiments[J]. Proceedings of the CSEE, 2005, 25(7): 131–136. (in Chinese)
ZENG Lingquan, KANO Yoshio, MA Hongru Imorove. Thrust characteristic of linear electromagnetic solenoid[J]. Journal of Northeast Dianli University, 1997, 17(1): 12–17. (in Chinese)
XU Xiaoqing, QUAN Long, LI Bin. Study on controlling theories and methods of switching solenoids proportional servo valve[J]. Proceedings of the CSEE, 2009, 29(21): 93–98.
WANG Xuping, QUAN Long, XU Xiaoqing. Principle and method for improving the switch solenoid characteristics with signal compensator[J]. Proceedings of the CSEE, 2010, 30(27): 117–122.
ESPINOSA A G, RUIZ J R R, CUSIDO J, et al. Sensorless control and fault diagnosis of electromechanical contactors[J]. Industrial Electronics, IEEE Transactions on, 2008, 55(10): 3 742–3 750.
RENN J C, CHOU Y S. Sensorless plunger position control for a switching solenoid[J]. JSME International Journal Series C, 2004, 47(2): 637–645.
ESPINOSA A G, RUIZ J R R, MORERA X A. A sensorless method for controlling the closure of a contactor[J]. Magnetics, IEEE Transactions on, 2007, 43(10): 3 896–3 903.
LIM K W, CHEUNG N C, RAHMAN M F. Proportional control of a solenoid actuator[C]//Industrial Electronics, Control and Instrumentation, Sep. 5–9 1994, Bologna, Italy, IECON’94, 1994, 3: 2 045–2 050.
RAHMAN M F, CHEUNG N C, LIM K W. Position estimation in solenoid actuators[J]. Industry Applications, IEEE Transactions on, 1996, 32(3): 552–559.
RAHMAN M F, CHEUNG N C, LIM K W. A sensorless position estimator for a nonlinear solenoid actuator[C]//Industrial Electronics, Control, and Instrumentation, Nov. 6–10, 1995, Orlando, FL, 1995, 2: 1 208–1 213.
QU Bingni, SONG Jiancheng, ZHANG Hongda, et al. Experimental research on mutual inductance in switched reluctance motor operated in two-phase excitation model[J]. Transactions of China Electrotechnical Society, 2010, 25(3): 33–39.
Author information
Authors and Affiliations
Corresponding author
Additional information
This project is supported by National Natural Science Foundation of China(Grant No. 51175362)
WANG Xuping, female, born in 1976, is currently a PhD candidate at Taiyuan University of Technology, China. His research interests include the electro-hydraulic servo system components, control theory and methods.
QUAN Long, male, born in 1959, is currently a professor and a PhD candidate supervisor at Taiyuan University of Technology, China. His research interests include mechatronics engineering, fluid power transmission and control.
XIONG Guangyu, male, born in 1946, is currently a professor and a PhD candidate supervisor at Taiyuan University of Technology, China. His research interests include the special motor.
Rights and permissions
About this article
Cite this article
Wang, X., Quan, L. & Xiong, G. Detecting the position of the moving-iron solenoid by non-displacement sensor based on parameter identification of flux linkage characteristics. Chin. J. Mech. Eng. 26, 1204–1211 (2013). https://doi.org/10.3901/CJME.2013.06.1204
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.3901/CJME.2013.06.1204