Robust High-Speed Positioning Servo System Based on Disturbance Observer

2009 ◽  
Vol 129 (3) ◽  
pp. 235-242 ◽  
Author(s):  
Masaki Sazawa ◽  
Kiyoshi Ohishi ◽  
Seiichiro Katsura
Keyword(s):  
Disturbance Observer ◽  
High Speed ◽  
Servo System

PMSM Servo System Control Based on Disturbance Observer

2010 ◽  
Vol 44-47 ◽  
pp. 1090-1094
Author(s):  
Hua Wei Chai ◽  
Jin Yu Zhou ◽  
Wei Ping Zhang ◽  
Zhi Gang Li
Keyword(s):  
Disturbance Observer ◽  
High Speed ◽  
Closed Loop ◽  
Servo System ◽  
System Control ◽  
Strong Impact ◽  
Closed Loop System ◽  
Ac Servo System ◽  
Ac Servo ◽  
Speed Tracking

In order to realize high speed control of some ac servo system, aimed at all kinds of uncertain factors such as greatly changing moment and torque, and strong impact torque. Therefore, for gaining good speed tracking characteristics, adaptive disturbance observer is adopted to observe load torque disturbance and speed variation. Stability of closed loop system is guaranteed by design of control tractics to satisfy track control requests of rocket launcher servo system. Simulation results indicate that this method can ideally observe disturbance and reduce output of controller, thus control performance of the system is improved and is greatly meaningful.

Improved Nanogap Servo System Using an Error-Based Disturbance Observer for High-Speed in Solid Immersion Lens-Based Plasmonic Lithography

2013 ◽  
Vol 52 (9S2) ◽  
pp. 09LG02 ◽  
Author(s):  
Geon Lim ◽  
Taeseob Kim ◽  
Won-Sup Lee ◽  
Guk-Jong Choi ◽  
Kyoung-Su Park ◽  
...  
Keyword(s):  
Disturbance Observer ◽  
High Speed ◽  
Servo System ◽  
Solid Immersion Lens

scholarly journals Study on High-Speed Intermittent Motion Mechanism. Comparison Indexing Cam Mechanism with Servo-System.

2002 ◽  
Vol 68 (668) ◽  
pp. 1191-1197
Author(s):  
Masatoshi HIKIZU ◽  
Hiroaki SEKI ◽  
Yoshitsugu KAMIYA ◽  
Hiroshi TACHIYA ◽  
Hisanao NOMURA
Keyword(s):  
High Speed ◽  
Servo System ◽  
Motion Mechanism ◽  
Cam Mechanism ◽  
Intermittent Motion

Robust Speed Regulation for PMSM Servo System With Multiple Sources of Disturbances via an Augmented Disturbance Observer

2018 ◽  
Vol 23 (2) ◽  
pp. 769-780 ◽  
Author(s):  
Yunda Yan ◽  
Jun Yang ◽  
Zhenxing Sun ◽  
Chuanlin Zhang ◽  
Shihua Li ◽  
...  
Keyword(s):  
Disturbance Observer ◽  
Servo System ◽  
Multiple Sources ◽  
Speed Regulation

scholarly journals Adaptive Backstepping Control of Vacuum Servo System Using High-Speed on-off Valves

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 129799-129812
Author(s):  
Gang Yang ◽  
Peng Jiang ◽  
Lei Lei ◽  
Yong Wu ◽  
Jingmin Du ◽  
...  
Keyword(s):  
High Speed ◽  
Servo System ◽  
Backstepping Control ◽  
Adaptive Backstepping ◽  
Adaptive Backstepping Control

EFFECT OF SERVO SYSTEMS ON THE CONTOURING ERRORS IN INDUSTRIAL ROBOTS

2012 ◽  
Vol 36 (1) ◽  
pp. 83-96 ◽  
Author(s):  
Mohamed Slamani ◽  
Albert Nubiola ◽  
Ilian A. Bonev
Keyword(s):  
High Speed ◽  
Industrial Robot ◽  
Statistical Tests ◽  
Measurement Instrument ◽  
Servo System ◽  
Industrial Robots ◽  
Structural Vibration ◽  
Tool Centre Point ◽  
Prediction Capability ◽  
Radius Size

Two important aspects of the performance of a servo system, tracking errors and contour errors, significantly affect the accuracy of industrial robots under high-speed motion. Careful tuning of the control parameters in a servo system is essential, if the risk of severe structural vibration and a large contouring error is to be avoided. In this paper, we present an overview of a method to diagnose contouring errors caused by the servo control system of an ABB IRB 1600 industrial robot by measuring the robot’s motion accuracy in a Cartesian circular shape using a double ballbar (DBB) measurement instrument. Tests were carried out at different TCP (tool centre-point) speed and trajectory radii to investigate the main sources of errors that affect circular contouring accuracy. Results show that radius size errors and out-of-roundness are significant. A simple experimental model based on statistical tests was also developed to represent and predict the radius size error. The model was evaluated by comparing its prediction capability in several experiments. An excellent error prediction capability was observed.

scholarly journals The main features of the 1.56-m telescope and its status quo

1986 ◽  
Vol 118 ◽  
pp. 121-122
Author(s):  
Wan Lai ◽  
Zhu Neng-hong ◽  
Wang Lan-juan ◽  
Yang Zheng-hua ◽  
Zheng Yi-jin
Keyword(s):  
High Speed ◽  
Servo System ◽  
Status Quo ◽  
Trigonometric Parallaxes ◽  
Comet Halley

This telescope was designed for determining the trigonometric parallaxes of faint stars. The otpical configuration is a Ritchey-Chrétien system and has only a f/10 Cassegrain focus for photographic work.The mounting is a combination of fork and yoke frame which can reduce the flexure due to gravity. A high speed digital servo-system was adopted for controlling and driving the telescope. At present some photographs of Comet Halley have been obtained.

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