Estimator-based sliding mode control of an optical disc drive under shock and vibration

Zhou, Yu; Steinbuch, M Maarten; Kostic, D Dragan

doi:10.1109/cca.2002.1038673

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…There have been various studies that have aimed to design robust control over shocks. Zhou et al [2002] presents a robust servo control system using observer-based sliding mode control to handle shock. Also, in Miyazaki et al [2004], a feedback controller using coprime factorization and a feed-forward controller using ZPET were employed together to eliminate periodic disturbances.…”

Section: Fault Detection and Shock Disturbancementioning

confidence: 99%

“…Also, in Miyazaki et al [2004], a feedback controller using coprime factorization and a feed-forward controller using ZPET were employed together to eliminate periodic disturbances. Although the systems in these studies (Zhou et al [2002], Miyazaki et al [2004]) enhance anti-shock performance, the control structures are complicated. In a recent study of anti-shock controllers (Zhou et al [2004]), a nonlinear anti-shock controller with a simple control structure (a dead zone in this case) was developed.…”

Section: Fault Detection and Shock Disturbancementioning

confidence: 99%

See 1 more Smart Citation

A Survey of Control Issues in Optical Data Storage Systems

Kim

Lee

Chung

2011

IFAC Proceedings Volumes

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Section: Fault Detection and Shock Disturbancementioning

confidence: 99%

Section: Fault Detection and Shock Disturbancementioning

confidence: 99%

A Survey of Control Issues in Optical Data Storage Systems

Kim

Lee

Chung

2011

IFAC Proceedings Volumes

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“…Consequently, a controller design that considers closed-loop bandwidth alone is inadequate [26][27][28][29]. Therefore, various studies have been conducted to design robust controls in the presence of external shocks, one of which is a robust control system that uses observer-based sliding mode control to manage shocks [30]. In addition, a direct measurement-based feedforward algorithm is proposed to suppress most of the theoretical external disturbances [31,32].…”

Section: Introductionmentioning

confidence: 99%

Disturbance Observer-Based Anti-shock Controller for Laser Beam Steering Systems

Kim

2024

Preprint

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This paper presents an approach to improve the robustness of tip-tilt controllers for fast-steering mirror (FSM)-based laser beam steering (LBS) systems in the presence of dynamic disturbances such as external shocks. To this end, we propose the addition of a disturbance observer (DOB)-based anti-shock controller in parallel to the original linear servo control loop to improve its control performance in the presence of external shocks. To increase the tip-tilt control performance against external shocks, the DOB-based control method, which is an improved control method for eliminating nonperiodic disturbances, is implemented in the original tip-tilt control system. Results indicate that the control error of the DOB-based anti-shock controller decreased, resulting in an efficient improvement in its disturbance-rejection performance.

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“…Moreover, identifying the efficient resonant spectrum requires high computing performance. Sliding mode control (SMC) method has some advantages of robustness property against system resonance, 10 due to its insensitive to changes in the stiffness and damping of the system. But the chattering problem is hard to be avoided.…”

Section: Introductionmentioning

confidence: 99%

Adaptive filtered x-least mean square algorithm with improved convergence for resonance suppression

Wang

Huang

Liu

2014

Proceedings of the Institution of Mechanical Engineers, Part I:

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The existence of the resonance is usually a trouble causing instability for most elastic drive systems. Generally, the measurement of original resonance of load side in a drive system is a direct solution for resonance suppression, but exact data are difficult to come by, such as torsional torque, load speed and disturbance torque. Therefore, a developed method for resonance suppression based on adaptive filtered x-least mean square algorithm with improved convergence is presented in this research. The proposed method obtains the resonance iteratively and reduces the significant resonance oscillations through a finite impulse response filter adapted by the least mean square error principle. In order to tackle the convergence speed problem caused by the high dynamics of the forward path model, another finite impulse response filter is inserted into the control structure to smooth the current control reference signal and the speed error signal, so that the dynamics features of the forward path model are improved. Furthermore, a filtered x-least mean square control structure for elastic drive systems is also developed. From the simulation and experimental results, the resonance is more effectively suppressed with proposed modified filtered x-least mean square structure compared with notch filters, and the inserted finite impulse response improves the convergence speed.

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Estimator-based sliding mode control of an optical disc drive under shock and vibration

Cited by 9 publications

References 10 publications

A Survey of Control Issues in Optical Data Storage Systems

A Survey of Control Issues in Optical Data Storage Systems

Disturbance Observer-Based Anti-shock Controller for Laser Beam Steering Systems

Adaptive filtered x-least mean square algorithm with improved convergence for resonance suppression

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