Dual-axis microgyroscope with closed-loop detection

An, Sung Yong; Oh, Y.D.; Park, KY; Lee, Seung Seob; Song, Chongmin

doi:10.1016/s0924-4247(98)00247-7

Cited by 40 publications

(19 citation statements)

References 5 publications

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“…_ ) has to be constructed, prior to the decision of torque drive, M , is made. The forcerebalance operation is an algorithm which has been successfully employed in industries for the desired demodulation (An, Oh, Park, Lee, and Song 1999). By force-rebalance approach, the amplitude of the sense mode is continually monitored and then suppressed to zero so that the control signal itself has, in fact, the composition of the exerted angular rate ).…”

Section: Goals Of Control Loopsmentioning

confidence: 99%

Integrated model reference adaptive control and time-varying angular rate estimation for micro-machined gyroscopes

Tsai

Sue

2010

International Journal of Control

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Section: Goals Of Control Loopsmentioning

confidence: 99%

Integrated model reference adaptive control and time-varying angular rate estimation for micro-machined gyroscopes

Tsai

Sue

2010

International Journal of Control

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“…This OIS differs from the previous designs (Yeom 2009;Chiu et al 2007;Tu et al 2009;Yu and Liu 2008) that stabilizes the lens holder by two-DOF translational mechanism. As compared to the translational one (Chen et al 2003;An et al 1999), the proposed rotational OIS is in small and slim size (only 11 mm 9 11 mm 9 8 mm) in order to be installed in mobile phones with favorable performance for compensating hand shocks. The dynamic of the OIS has been analyzed in this study and the sliding mode control (SMC) has been applied to realize the controller.…”

Section: Introductionmentioning

confidence: 99%

A new two-DOF rotational optical image stabilizer

et al. 2011

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This work proposes design, optimization and validation of a new two degree-of-freedom (DOF) rotational optical image stabilizer (OIS) that is suitable for installing into a mobile-phone-camera. This OIS differs from the previous designs since it stabilizes the lens holder directly by two-DOF translational mechanisms that are actuated by voice coil motors. The work can be divided into three main parts: (1) designs of mechanism and genetic algorithm (GA) optimization of magnetic field, (2) establishments of the dynamic model and equation of motions (EOM) of a dual-axis rotational structure, and (3) realizations of a sliding mode control (SMC) controller with fine performance. The dynamic of the dual-axis rotational OIS system has been analyzed and the EOM has been derived. Based on the Lagrange's method, the motions of the OIS have been modeled through considering kinetic energy and electromagnetic torques. In the last part, the theory of SMC is applied, and the associated simulations are conducted. Based on the simulation results, the SMC controller is forged with the assistances from MATLAB pre-simulation and tested by a microprocessor module. After a series of experiments and verifications, the prototype of the novel OIS is finally accomplished with satisfactory performance of vibration reduction.

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“…In order to meet this trend as well as the requirement of high performance, extremely compact size, low power operation, and low cost angular rate sensors, considerable interest in design and fabrication of micromechanical gyroscopes [1][2] has been attracted. Normally, the micromechanical gyroscope can be driven by electrostatic [3][4], electromagnetic [5][6][7] or piezoelectric [8][9], which can measure the angular rate or the rotation angle by integrating the measured angular rate with respect to time. These gyroscopes have inspiriting parts and sensing parts, so their structures are complex.…”

Section: Introductionmentioning

confidence: 99%

A Novel Non-driven Structural MEMS-based Gyroscope

Wu¹,

Zhang²

2010

JDCTA

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This paper describes a unique capacitively-sensed MEMS-based gyroscope, which utilizes rotating carrier rotate as driven force and responds to an external angular rate of yaw due to the Coriolis Effect. The basic construction and operating principles of the gyroscope are described and illustrated. MEMS-based gyroscope output is presented at different yaw angular acceleration. The raw results obtained from these tests performed to validate the effectiveness of the gyroscope.

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Dual-axis microgyroscope with closed-loop detection

Cited by 40 publications

References 5 publications

Integrated model reference adaptive control and time-varying angular rate estimation for micro-machined gyroscopes

Integrated model reference adaptive control and time-varying angular rate estimation for micro-machined gyroscopes

A new two-DOF rotational optical image stabilizer

A Novel Non-driven Structural MEMS-based Gyroscope

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