机械工程学报

LIU Xiaokang

PENG Donglin

ZHU Ge

WANG Xianquan
Department of Electronic Engineering,
Chongqing Institute of Technology,
Chongqing 400050, China

TIME-SPACE CONCEPT FOR PRECISION MEASUREMENT*

Abstract: The transformation between time and space is discussed. To improve real-time response speed of intelligent measuring system, the concept of exchanging program execution time with more circuitry is presented working in cycle mode. Displacement measuring by magnification is achieved with period measurement by magnification. To change the condition that traditional precision measurement depends on machining precision greatly, the concept of measuring space with time and theory of time-space coordinate transformation are proposed. Guided by the idea of measuring space with time, differential frequency measurement system and time grating displacement sensor are developed based on the proposed novel methods. And high-precision measurement is achieved without high-precision manufacture, which embeds the remarkable characteristics of low cost but high precision to the devices. Experiment and test results conform the validity of the proposed time-space concept.

Key words: Time-space Precision measurement Control flow Differential frequency
Time grating

* This project is supported by National Natural Science Foundation of China (No. 59575095, No. 59675089, No. 50075091, No. 50575235). Received July 14, 2007; received in revised form January 12, 2008; accepted March 18, 2008

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Biographical notes

LIU Xiaokang is currently an associate professor in Department of Electronic Engineering, Chongqing Institute of Technology, China. He received his PhD degree from College of Mechanical Engineering, Chongqing University, China, in 2005. His research interests mainly include mechanical measurements and intelligent instruments.
Tel: +86-23-68666321; E-mail: lxk@cqit.edu.cn

PENG Donglin is currently a professor in Chongqing Institute of Technology, China. His research interests mainly include CAT, instrumentation technology and intelligent sensors.

ZHU Ge is currently an associate professor in Chongqing Institute of Technology, China. His research interests mainly include fault diagnosis and virtual instruments.

WANG Xianquan is currently an associate professor in Chongqing Institute of Technology, China. His research interests mainly include EDA and virtual instruments.

References

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