Browsing by Author "LU, SS"

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A VIDEO SIGNAL-PROCESSING TECHNIQUE FOR VIBRATION MEASUREMENT OF A FLEXIBLE BEAM
(1992-12-01)
TANG, PC
;
LU, SS
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電控工程研究所
;
Institute of Electrical and Control Engineering
A video system is used as a single contactless multipoint displacement sensor to measure the vibration displacement of a beam. In this article, several schemes are proposed to reduce the image processing time and to increase its accuracy. The vibration displacements of the entire beam are measured with a sampling rate of 60 Hz. From these measured data, the mode shapes and vibration states can be calculated. The video system is shown to have a potential for on-line control and on-line identification of flexible beam systems.
A VISION-BASED POSITION CONTROL-SYSTEM FOR A ONE-LINK FLEXIBLE ARM
(1995-07-01)
TANG, PC
;
WANG, HC
;
LU, SS
;
電控工程研究所
;
Institute of Electrical and Control Engineering
A video system is a good tool for measuring the geometric shape of a beam, This contactless measurement system is able to provide digitized displacement data for the entire beam with a single transducer. However, it has rarely been implemented for real-time operations since the speeds of previous image processing schemes has been too slow. In this paper, a multi-processor system have been built to control a flexible arm with image feedbacks. Several schemes are proposed to reduce the image processing time and to increase its accuracy. The vibration displacements of the entire beam are measured by the vision system with a sampling rate of 60 Hz. From this data, the vibration states can be calculated indirectly. Using these state feedbacks, some experiments on the control of the tip position of an one-link flexible arm have been performed.
DESIGN AND IMPLEMENTATION OF A FULLY DIGITAL DC SERVO SYSTEM BASED ON A SINGLE-CHIP MICROCOMPUTER
(1982)
TANG, PC
;
LU, SS
;
WU, YC
;
電子工程學系及電子研究所
;
電控工程研究所
MICROPROCESSOR-BASED DESIGN OF A FIRING CIRCUIT FOR 3-PHASE FULL-WAVE THYRISTOR DUAL CONVERTER
(1982)
TANG, PC
;
LU, SS
;
WU, YC
;
電子工程學系及電子研究所
;
電控工程研究所