Control System for Suppressing Tracking Error Offset and Multiharmonic Disturbance in High-Speed Optical Disk Systems

2012 ◽  
Vol 132 (3) ◽  
pp. 347-356 ◽  
Author(s):  
Yuta Nabata ◽  
Tatsuya Nakazaki ◽  
Tokoku Ogata ◽  
Kiyoshi Ohishi ◽  
Toshimasa Miyazaki ◽  
...  
Keyword(s):  
Control System ◽  
High Speed ◽  
Tracking Error ◽  
Optical Disk

Focusing control system for suppressing multi-harmonic disturbances in high speed optical disk systems

2012 ◽  
Author(s):  
Tatsuya Nakazaki ◽  
Tokoku Ogata ◽  
Kiyoshi Ohishi ◽  
Toshimasa Miyazaki ◽  
Daiichi Koide ◽  
...  
Keyword(s):  
Control System ◽  
High Speed ◽  
Optical Disk

High-Speed Tracking Control System for Broadcast-Use Optical Disk Drive

2006 ◽  
Vol 45 (2B) ◽  
pp. 1187-1192 ◽  
Author(s):  
Daiichi Koide ◽  
Haruki Tokumaru ◽  
Kiyoshi Ohishi ◽  
Kazuyoshi Kuramochi ◽  
Toshimasa Miyazaki
Keyword(s):  
Control System ◽  
Tracking Control ◽  
High Speed ◽  
Disk Drive ◽  
Optical Disk ◽  
Optical Disk Drive ◽  
Speed Tracking ◽  
Speed Tracking Control

High-Speed Tracking Control System for Broadcast-Use Optical Disk Drive

2005 ◽  
Author(s):  
Daiichi Koide ◽  
Haruki Tokumaru ◽  
Kiyoshi Ohishi ◽  
Kazuyoshi Kuramochi ◽  
Toshimasa Miyazaki
Keyword(s):  
Control System ◽  
Tracking Control ◽  
High Speed ◽  
Disk Drive ◽  
Optical Disk ◽  
Optical Disk Drive ◽  
Speed Tracking ◽  
Speed Tracking Control

Implementation of Trailer Steering Control on a Multi-Unit Vehicle at High Speeds

2013 ◽  
Vol 136 (2) ◽  
Author(s):  
Richard Roebuck ◽  
Andrew Odhams ◽  
Kristoffer Tagesson ◽  
Caizhen Cheng ◽  
David Cebon
Keyword(s):  
Control System ◽  
High Speed ◽  
Tracking Error ◽  
Path Following ◽  
Stability Control ◽  
Substantial Improvement ◽  
Lateral Acceleration ◽  
Steering Control ◽  
Stability Margins ◽  
Stability Control System

A high-speed path-following controller for long combination vehicles (LCVs) was designed and implemented on a test vehicle consisting of a rigid truck towing a dolly and a semitrailer. The vehicle was driven through a 3.5 m wide lane change maneuver at 80 km/h. The axles of the dolly and trailer were steered actively by electrically-controlled hydraulic actuators. Substantial performance benefits were recorded compared with the unsteered vehicle. For the best controller weightings, performance improvements relative to unsteered case were: lateral tracking error 75% reduction, rearward amplification (RA) of lateral acceleration 18% reduction, and RA of yaw rate 37% reduction. This represents a substantial improvement in stability margins. The system was found to work well in conjunction with the braking-based stability control system of the towing vehicle with no negative interaction effects being observed. In all cases, the stability control system and the steering system improved the yaw stability of the combination.

scholarly journals High-Performance Error Prediction Robust Tracking Control System for High Speed Optical Disk Recording Equipment

2008 ◽  
Vol 128 (6) ◽  
pp. 785-792 ◽  
Author(s):  
Isao Shibutani ◽  
Yasuharu Yoshida ◽  
Kiyoshi Ohishi ◽  
Toshimasa Miyazaki ◽  
Daiichi Koide ◽  
...  
Keyword(s):  
Control System ◽  
Tracking Control ◽  
High Speed ◽  
High Performance ◽  
Optical Disk ◽  
Error Prediction ◽  
Robust Tracking ◽  
Robust Tracking Control ◽  
Recording Equipment ◽  
Performance Error

High speed optical disk control system with 3-dimensional spot wobbling

1991 ◽  
Vol 27 (6) ◽  
pp. 4915-4917
Author(s):  
K. Matsumoto ◽  
T. Maeda
Keyword(s):  
Control System ◽  
High Speed ◽  
Optical Disk ◽  
3 Dimensional

DESIGN OF FLY-BY-WIRE CONTROL SYSTEM ALGORITHMS FOR ADVANCED HIGH-SPEED HELICOPTER

2015 ◽  
Vol 46 (3) ◽  
pp. 259-287
Author(s):  
Viktor Andreevich Anikin ◽  
Oleg Vladimirovich Animitsa ◽  
Vladimir Mikhailovich Kuvshinov ◽  
Veniamin Aleksandrovich Leontiev
Keyword(s):  
Control System ◽  
High Speed

Direct Current Deadbeat Predictive Controller for BLDC Motor Using Single DC-Link Current Sensor

2020 ◽  
Vol 38 (8A) ◽  
pp. 1187-1199
Author(s):  
Qaed M. Ali ◽  
Mohammed M. Ezzalden
Keyword(s):  
Control System ◽  
High Speed ◽  
Fast Response ◽  
Bldc Motor ◽  
Current Controller ◽  
Three Phase ◽  
Predictive Controller ◽  
Two Phases ◽  
Dc Current ◽  
Three Phase Inverter

BLDC motors are characterized by electronic commutation, which is performed by using an electric three-phase inverter. The direct control system of the BLDC motor consists of double loops; including the inner-loop for current regulating and outer-loop for speed control. The operation of the current controller requires feedback of motor currents; the conventional current controller uses two current sensors on the ac side of the inverter to measure the currents of two phases, while the third current would be accordingly calculated. These two sensors should have the same characteristics, to achieve balanced current measurements. It should be noted that the sensitivity of these sensors changes with time. In the case of one sensor fails, both of them must be replaced. To overcome this problem, it is preferable to use one sensor instead of two. The proposed control system is based on a deadbeat predictive controller, which is used to regulate the DC current of the BLDC motor. Such a controller can be considered as digital controller mode, which has fast response, high precision and can be easily implemented with microprocessor. The proposed control system has been simulated using Matlab software, and the system is tested at a different operating condition such as low speed and high speed.

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