Simulation and Optimization Research of the Actuator for Soft-Close Automatic Car Doors

Abstract:

Based on the current design of actuator for soft-close automatic car doors, function and composition of the mechanical assembly and the electronic control module of the actuator are elaborated firstly. Then the push travel section of cam profile is optimized from previous circular arcs to a spline curve to reduce impact and fatigue wear between the switch and the cam in the mechanical assembly through multi-body dynamics simulation with the Adams solving tool in NX7.5. Besides, an improvement of the MOSFET bridge drive circuit and corresponding program design through dead-time control method with half-bridge chopper are applied to solve the heating problem in the electronic control module, in the light of equivalent electronic circuit simulation in Multisim. The results demonstrate that the optimization works well, and valuable conclusions can be drawn from system simulation during the prototype stage of the actuator product is practicable.

• Periodical: Advanced Materials Research (Volume 1039)
• Pages: 376-382
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1039.376
• Online since: October 2014
• Authors: Yu Ru Fang*, Shu Lin Kan, Xi Xiong Wang
• Keywords: Actuator, CAM, Car Door, MOSFET, Optimization, Simulation, Soft-Close Automatic

References

[1] Attridge A, Walton D, Kalsi G. Developments in car door latching systems [J]. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2002, 216 (10): 819-830.

DOI: 10.1177/095440700221600105

[2] Attridge A, Walton D. Environment within a car door [J]. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2004, 218(11): 1259-1268.

DOI: 10.1243/0954407042580057

[3] Metzner D, Schäfer J, Langfermann M, et al. Integrated Mechatronic Design and Simulation of a Door Soft Close Automatic with Behavioral Models of Smart Power Ics [C] / SAE 2002 World Congress. United States: SAE International, (2002).

DOI: 10.4271/2002-01-0564

[4] SUN Heng, CHEN Zuomo, GE Wenjie. Mechanical Theory [M]. Beijing: Higher Education Press. 2006, 5.

[5] Miller J M. Dependence of the input impedance of a three-electrode vacuum tube upon the load in the plate circuit [M]. Govt. Print. Off., (1919).

DOI: 10.1016/s0016-0032(19)90474-1

[6] WU Maogang, ZHAO Rongxiang, TANG Xinzhou. Dead-time Effects Analysis and Compensation of SPWM and SVPWM Inverter [J]. Proceedings of the CSEE, 2006, 26 (12) : 101-105.

[7] Leggate D, Kerkman R J. Pulse based dead time compensator for PWM voltage inverters[C] / Proceedings of the 1995 IEEE IECON 21st International Conference on. IEEE. : Industrial Electronics, Control, and Instrumentation, 1995 : 474-481.

DOI: 10.1109/iecon.1995.483455