TY - JOUR
T1 - Suppression of dynamic offset of electromagnetic drive module for micro-gyroscope
AU - Tsai, Nan Chyuan
AU - Liou, Jiun Sheng
AU - Lin, Chih Che
AU - Li, Tuan
N1 - Funding Information:
The authors would like to thank the Center for Micro/Nano Technology Research, National Cheng Kung University, Tainan City, Taiwan, and National Nano Devices Laboratory (NDL 98-C02M3P-107 ) for equipment access and technical support. This research was partially supported by National Science Council (Taiwan) with Grant NSC 98-2221-E-006-184-MY3 and 99-2622-E-006-010-CC2 .
PY - 2011/2
Y1 - 2011/2
N2 - An innovative 3-phase alternative current (AC) drive circuit for the seismic disc in micro-gyroscopes is designed and verified by computer simulations and experiments. The in-plane dynamic model of the seismic disc with mass eccentricity and air gap against the centre bearing and the mathematic expression of two sinusoidal magnetic fields are developed respectively. In order to prevent the seismic disc from collision with the centre bearing and the electromagnetic (EM) poles, an anti-collision controller is established by employing two look-up tables which define the intensity of the applied current to the EM poles. Self-sensing technique is included to measure the real-time offset of the disc by two orthogonal pairs of EM poles, without any additional sensors. The drive circuit under sinusoidal pulse width modulation (SPWM) operation and the anti-collision strategy are verified by intensive computer simulations via commercial software, OrCAD 9, and experiments.
AB - An innovative 3-phase alternative current (AC) drive circuit for the seismic disc in micro-gyroscopes is designed and verified by computer simulations and experiments. The in-plane dynamic model of the seismic disc with mass eccentricity and air gap against the centre bearing and the mathematic expression of two sinusoidal magnetic fields are developed respectively. In order to prevent the seismic disc from collision with the centre bearing and the electromagnetic (EM) poles, an anti-collision controller is established by employing two look-up tables which define the intensity of the applied current to the EM poles. Self-sensing technique is included to measure the real-time offset of the disc by two orthogonal pairs of EM poles, without any additional sensors. The drive circuit under sinusoidal pulse width modulation (SPWM) operation and the anti-collision strategy are verified by intensive computer simulations via commercial software, OrCAD 9, and experiments.
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U2 - 10.1016/j.ymssp.2010.07.005
DO - 10.1016/j.ymssp.2010.07.005
M3 - Article
AN - SCOPUS:78649635429
VL - 25
SP - 680
EP - 693
JO - Mechanical Systems and Signal Processing
JF - Mechanical Systems and Signal Processing
SN - 0888-3270
IS - 2
ER -