首页|A novel tracking control approach of amplitude signals for vibratory gyroscopes suppressing high-frequency disturbance
A novel tracking control approach of amplitude signals for vibratory gyroscopes suppressing high-frequency disturbance
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NSTL
Elsevier
Vibratory gyroscopes are the most ideal novel inertial sensors in the 21st century. The amplitude is an important index of vibratory gyroscopes. The high-frequency disturbance is a common and intricate problem in vibratory gyroscopes. The paper investigates a novel tracking control approach that tracks the reference amplitude signal and suppresses the high-frequency disturbance for vibratory gyroscopes. First, the original dynamic system is transformed into an interval type-2 (IT2) fuzzy system such that the nonlinearity and uncertainty of the system are well handled. To reduce the conservatism of the asymptotic stability condition, a novel coupling-factors-dependent Lyapunov function is constructed, in which the system state depends on coupling factors. Then, to track the reference amplitude signal and suppress the high-frequency disturbance simultaneously, a doubly-fed tracking controller with nonfragile property is developed such that the state error system is asymptotically stable with a prescriptive performance. Finally, the comparative results of a vibratory gyroscope are done to show that the proposed control approach can greatly improve the control precision of amplitude signals, which demonstrates the effectiveness of the proposed control approach.
NSTL
Elsevier
