نتایج جستجو برای: servo

تعداد نتایج: 4993  

2005
Marco Muenchhof Rolf Isermann

Different methods for change detection of signal features are compared for a residual generated at a hydraulic servo axis. The residual is based on a physical model of the pressure buildup inside the hydraulic cylinder. Nevertheless, it is augmented with an observer to counteract slight model impurities even over prolonged periods of operation. Different sensor faults are introduced, which affe...

2008
Ill-yeong LEE

In this study, the control performance of a hydraulic servo system with a feedback linearization compensator is investigated. The focus of this study is set on the quantitative investigation of the effects(sensitivities) of disturbances and system parameters’ variation on control performances of the hydraulic control system. Finally, verifies the efficacy of a disturbance observer to overcome t...

2005
Lei Li

Micro-optical devices, e.g., micro lenses, micro mirrors, play an important role in high speed data, voice and video signal transmissions. In this study, a new method of fabricating micro optical devices was investigated. The method is different from traditional fabrication processes in the sense that that the micro optical elements were simultaneously machined in a process known as slow tool s...

1996
John F. Jansen Reid L. Kress

This paper will address two issues associated with the implementation of a hydraulically powered dissimilar muster-slave teleoperated system. These issues are the overall system control architecture and the design of robust hydraulic servo controllers for the position control problem. Finally, a discussion of overall system performance on an actual teleoperated system will be presented. (Schill...

2017
Hao-Ting Lin

This project aims to develop a novel large stroke asymmetric pneumatic servo system of a hardware-in-the-loop for path tracking control under variable loads based on the MATLAB Simulink real-time system. High pressure compressed air provided by the air compressor is utilized for the pneumatic proportional servo valve to drive the large stroke asymmetric rod-less pneumatic actuator. Due to the p...

2008
Shu-Hung Liu Yi-Chih Lai Jia-Yush Yen

Modern computer-aided design and dynamics simulation tools allow design and testing to be performed in a virtual-reality environment. The integration of controller synthesis programs also makes it possible to perform servo tuning without actually having to build a prototype. However, most servo controllers are based on integer processors for machine tools, and the integer numbers entering into ...

2016
Hamid Alturbeh James F. Whidborne Patrick Luk Martin Bayliss

A directional drilling tool control unit whose design is based on servo control of a rotary valve using the roll-stabilised instrumented system approach has been successfully used in oil fields for over twenty years. In this paper, Field Oriented Control (FOC) is applied to cascaded voltage regulation and servo control using a open-loop plant model of the roll-stabilised control unit. The servo...

2007
P. R. Ouyang W. J. Zhang Madan M. Gupta W. Zhao

The development of an automated bio-micromanipulation system provides high manipulation rates with optimal reproducibility and makes quantitative bio-micromanipulation possible. Visual-servo control is necessary for realizing automated bio-micromanipulation and increasing accuracy of micromanipulator. We have developed a dual-hand bio-micromanipulation system with micro-visual-servo control to ...

2008
Wai Ee Wong

The hard disk drive storage industry is driven to increase data storage density, with increasing tracks per inch (TPI) and bits per inch (BPI) on the recording media. In the development of higher density recording, high-speed testing of magnetic heads and media in engineering and manufacturing environments has traditionally focused on spinstands and disk head testers. This paper describes a hig...

2013
Mao-Hsiung Chiang

The paper aims to develop a novel pitch control system for a large wind turbine driven by a variable-speed pump-controlled hydraulic servo system. To perform practical pitch control experiments, a full-scale test rig of the hydraulic pitch control system for a 2 MW wind turbine’s blade, including a novel pitch control mechanism, a variable-speed pump-controlled hydraulic servo system, a disturb...

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