DYNAMICS AND ROBUST CONTROL OF A HIGH SPEED OPTICAL PICKUP

The most important specifications in precision positioning are positioning accuracy and settling time. When a positioning sensor based on required specifications is installed in equipment, every effort is made to realize throughput, i.e., high-speed positioning. We applied model-matching 2-degree-of-freedom (DOF) control to a linear slider to realize positioning, but found that positioning waveforms were uneven under different conditions. To overcome this problem, we applied robust control laws, e.g., MM-2DOF with a disturbance observer, robust 2DOF control, and modelfollowing 2DOF control to the linear slider. A comparative study confirmed experimentally that robust 2DOF control was most suitable. To improve modelfollowing 2DOF control, we modified model-following 2DOF control and its robust positioning.

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Optical Pickup for Recording to Dual-layer High-speed Blu-ray Disc

Optical Data Storage ◽

10.1364/ods.2007.mc1 ◽

2007 ◽

Author(s):

Kousei Sano ◽

Toshiyasu Tanaka

Keyword(s):

High Speed ◽

Optical Pickup

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Robust Control of High-Speed Synchronous Reluctance Machines

IEEE Transactions on Industry Applications ◽

10.1109/tia.2016.2574774 ◽

2016 ◽

Vol 52 (5) ◽

pp. 3990-4000 ◽

Cited By ~ 12

Author(s):

Alessandra Guagnano ◽

Gianluca Rizzello ◽

Francesco Cupertino ◽

David Naso

Keyword(s):

Robust Control ◽

High Speed

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Robust Control on High-Speed Positioning of Pneumatic Servo System.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C ◽

10.1299/kikaic.67.970 ◽

2001 ◽

Vol 67 (656) ◽

pp. 970-977

Author(s):

Hisashi MATSUSHITA ◽

Shujiro DOHTA

Keyword(s):

Robust Control ◽

High Speed ◽

Servo System ◽

Pneumatic Servo System

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The Robust Control of Magnetic Suspension with Rapidly Changing of Rotor Speed

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.147-149.302 ◽

2009 ◽

Vol 147-149 ◽

pp. 302-307 ◽

Cited By ~ 1

Author(s):

Arkadiusz Mystkowski ◽

Zdzisław Gosiewski

Keyword(s):

Control System ◽

Robust Control ◽

High Speed ◽

Controller Design ◽

Angular Speed ◽

Magnetic Bearing ◽

Magnetic Suspension ◽

Experimental Results ◽

Active Magnetic Bearing ◽

Robust Controller

An optimal robust vibration control of a rotor supported magnetically over a wide angular speed range is presented in the paper. The laboratory stand with the high speed rotor (max. 24000 rpm) was designed. The wide bandwidth controller with required gain, which is necessary to stabilize the structurally unstable and active magnetic bearing system was computed. For controller design, the weighting functions putted on the input and output signals were chosen. For control design, the dynamics of the rotor and uncertain parameters were considered. The optimized control system by minimization of the H norm putted on transient process of the system was presented. The robust controller was designed with considered asymmetrically magnetic bearings, signal limits and power amplifiers dynamic. The success of the robust control is demonstrated through computer simulations and experimental results. Matlab-Simulink was used for the numerical simulation. The experimental results show the effectiveness of the control system as good vibrations reducing and robustness of the designed controller in all dynamic states.

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