Abstract
International Journal of Computational Engineering ScienceVol. 04, No. 02, pp. 417-420 (2003) Design, Modelling and SimulationNo AccessA NOVEL APPLICATION OF CONTACT FRICTION FOR LATERALLY MOTION TUNABLE ACCELERATION-THRESHOLD SWITCH: MODELING AND SIMULATIONJ. C. Chiou and Y. J. LinJ. C. ChiouDepartment of Electrical and Control Engineering, National Chiao Tung University, Hsin-Chu, Taiwan, R. O. C. Search for more papers by this author and Y. J. LinDepartment of Electrical and Control Engineering, National Chiao Tung University, Hsin-Chu, Taiwan, R. O. C. Search for more papers by this author https://doi.org/10.1142/S1465876303001411Cited by:0 PreviousNext AboutSectionsPDF/EPUB ToolsAdd to favoritesDownload CitationsTrack CitationsRecommend to Library ShareShare onFacebookTwitterLinked InRedditEmail AbstractA novel tunable acceleration-thresholds switch device based on electrostatic force in controlling friction for desired acceleration-thresholds level is developed. Electrostatic forces based on desired friction are used to provide variable acceleration threshold level. The design concept is based on the fact that when acceleration is presented on the proofmass, an induced static friction will exactly cancel the effect of the acceleration. Upon the acceleration level is exceeding the maximum static friction, the proofmass engages movement in the acceleration direction and enter dynamic friction region. A contact pad is designed here to detect the on/off status of the accelerating proofmass. Dynamic simulation model, established by Matlab Simulink solver, indicated that the input signal is given with 10 triangular waves from 0.5g to 5g peak accelerations in 0.1sec duration, and the threshold switch gap is designed in 1 m. When VC, are equal to 1V, 1.5V, and 1.8V respectively, there are 8 signals (from 1.5g to 5g), 5 signals (from 3g to 5g), and 3 signals (from 4g to 5g) exceeded 1 m threshold switch gap which demonstrated the effectiveness of the present design concept. Experimental results of the tunable acceleration-thresholds switch device will be reported in the near future.Keywords:tunableacceleration-thresholdfrictiondynamic simulation References Jeung Sang Go, Young-Ho Cho, and Byung Man Kwak, Acceleration Microswitches With Adjustable Snapping Threshold, Transducers '95, (1995) 691 – 694 . Google Scholar A. Selvakumar, N. Yazdi, and K. Najafi, Low power, wide range threshold acceleration sensing system, MEMS '96, (1996) 186–191 . Google ScholarSven Michaeliset al., Sensors and Actuators A: Physical 85(1–3), 418 (2000). Crossref, Google ScholarK. Deng and W. H. Ko, Solid-State Sensor and Actuator Workshop, 1992, 5th Technical Digest (IEEE, 1992) pp. 98–101. Crossref, Google Scholar K. Deng, W. H. Ko, and G. M. Michal, A preliminary study on friction measurements in MEMS, Solid-State Sensors and Actuators, International Conference, (1991) 213–216 . Google Scholar FiguresReferencesRelatedDetails Recommended Vol. 04, No. 02 Metrics History Keywordstunableacceleration-thresholdfrictiondynamic simulationPDF download
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