Ball-disk rotor gyroscope adaptive quick-start technique
Rotating speed is a critical parameter affecting the performance of rotor gyroscopes. Rotor gyroscopes must operate at the rated rotating speed. To shorten the start time of the ball-disk rotor gyroscope, this paper presents a new design of the drive system for a ball-disk rotor gyroscope. The drive system is monitored by a microcontroller. First, the microcontroller generates a sine pulse width modulation signal to drive the permanent magnet rotor. Second, the position of the rotor is detected according to the back electromotive force in the non-energized coil. Third, a piecewise closed-loop control algorithm is implemented to keep the angular acceleration of the rotor within the safe range automatically during the acceleration process and when running at a constant speed. This control algorithm can avoid rotor stalling due to loss of steps. Experimental result shows that with the help of adaptive quick-start technique, the start time of the device can be shortened by up to 36.6%.
Key wordsRotor gyroscope Magnetically driven Quick start Piecewise algorithm Closed-loop control
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- Damrongsak, B., Kraft, M., 2005. A micromachined electrostatically suspended gyroscope with digital force feedback. IEEE Sensors, p.401–404. https://doi.org/10.1109/ICSENS.2005.1597720Google Scholar
- Damrongsak, B., Kraft, M., Rajgopal, S., et al., 2008. Design and fabrication of a micromachined electrostatically suspended gyroscope. J. Mech. Eng., 222(1):53–63. https://doi.org/10.1243/09544062JMES665Google Scholar
- Geen, J.A., 2005. Very low cost gyroscopes. IEEE Sensors, p.537–540. https://doi.org/10.1109/ICSENS.2005.1597754Google Scholar
- Jin, L.C., Zhang, H.W., Zhong, Z.Y., 2011. Design of a LC-tuned magnetically suspended rotating gyroscope. J. Appl. Phys., 109:07E525. https://doi.org/10.1063/1.3562263Google Scholar
- Kraft, M., Damrongsak, B., 2010. Micromachined gyroscopes based on a rotating mechanically unconstrained proof mass. IEEE Sensors, p.23–28. https://doi.org/10.1109/ICSENS.2010.5690984Google Scholar
- Qin, K., Zhang, W.P., Chen, W.Y., et al., 2011. Simulation of electrostatically suspended micro-gyroscope based on LabVIEW. 3rd Int. Conf. on Measuring Technology and Mechatronics Automation, p.249–252. https://doi.org/10.1109/ICMTMA.2011.633Google Scholar
- Shao, D.D., Chen, W.Y., Zhang, W.P., et al., 2011. Virtual prototyping simulation for electrostatically suspended rotor micro gyroscope initial levitation. 6th IEEE Int. Conf. on Nano/Micro Engineered and Molecular Systems, p.9–12. https://doi.org/10.1109/NEMS.2011. 6017282Google Scholar
- Shao, S.Y., Huang, X.G., Liu, W., et al., 2006. Design of drive circuit for rotation of micromachined gyroscope with magnetic-suspension rotor. Transd. Microsyst. Technol., 2:83–85 (in Chinese).Google Scholar
- Srinu, D., Manmadha, K.B., 2014. A single phase to three phase PFC half-bridge converter using BLDC drive with SPWM technique. Int. J. Eng. Res. Appl., 4(7):31–38.Google Scholar
- Xu, J.B., Wu, Z.Z., Wu, X., et al., 2014. An improved phase disposition SPWM strategy for cascaded multilevel inverter. Math. Probl. Eng., Article 731574. https://doi.org/10.1155/2014/731574Google Scholar
- Xue, G., Li, T., Zhang, H.W., 2009a. Research status and development of magnetically suspended rotorgyroscopes. Int. Conf. on Applied Superconductivity and Electromagnetic Devices, p.373–376. https://doi.org/10.1109/ASEMD.2009.5306617Google Scholar
- Xue, G., Zhang, X.T., Zhang, H.W., 2009b. Electromagnetic design of a magnetically suspended gyroscope prototype. IEEE Int. Conf. on Applied Superconductivity and Electromagnetic Devices, p.369–372. https://doi.org/10.1109/ASEMD.2009.5306616Google Scholar