Dynamic Behavior of the Advanced Actuator

Abstract:

The advanced actuator is a kind of swaying mechanism specially developed for certain aircraft, having low rotational speed and great torque. Utilizing criterions of mass equivalent and bending stiffness equivalent, this paper firstly applies simplification to the actuator, getting a piece of continuous beam with varying circular sections. According to the mounting condition of actuator, then establishes the finite element dynamic analyzing model, using I-DEAS software, selecting method of synchronous vector iteration, finishes normal modal analyzing. Next, carries Hertzian contact resonance analyses to ball straight-rotary pair, ball spline pair and ball unload pair, calculates contact resonance frequencies. Considering the resistance torque being moving still concludes formulae of quantity of contact resonance frequencies. Lastly, based on load spectra, makes a conclusion that antiresonance behavior of the actuator is well, showing that the design plan is feasible. Experimentation of prototype indicates that the above theoretical analyses are correct.

• Periodical: Applied Mechanics and Materials (Volumes 29-32)
• Pages: 2410-2415
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.29-32.2410
• Online since: August 2010
• Authors: Chang Ping Zou
• Keywords: Actuator, Dynamic Analysis, Finite Element Model (FEM), Hertzian Contact

References

[1] Cheng Guangren, etc. Design elements of ball screws transmission. Beijing: the publishing company of mechanical industry, (1987).

[2] Rao Zhengang, Wang Yongwei. Ball screwed rod pair and locking equipment. Beijing: the publishing company of national defense industry.

[3] Wu Zongze. Advanced machine design. Beijing: the publishing company of Tsinghua University, (1991).

[4] Zou Changping, et al. A new type of aircraft actuator based on advanced CAD/CAE technology and software. In: Lu Bingheng, Tang Yiping, Rapid development technology for new products in 21st century, Xi'an: Shanxi publishing company on science and technology, 2000： 312~315.