Research on a Novel High-Precision Intelligent Displacement Sensor

2006 ◽  
Vol 113 ◽  
pp. 435-441 ◽  
Author(s):  
Xiao Kang Liu ◽  
Dong Lin Peng ◽  
Xing Hong Zhang ◽  
Xi Hou Cheng
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
Angular Displacement ◽  
Low Cost ◽  
High Accuracy ◽  
Displacement Sensor ◽  
Test Results ◽  
High Precision Measurement ◽  
Time Space ◽  
Space Coordinate

A theory of time-space coordinate transformation is presented for measuring space with time. A novel type of displacement sensor named time grating is developed, and methods of electronic rectifying, self-compensation and self-correction are proposed to intelligentize the sensor. Experiment results coming from applications conform to the validity of the proposed theory and methods. The experiment and test results show that high-precision measurement is achieved without high-precision manufacture and that angular displacement is measured very accurately without a dividing scale, which embeds the remarkable characteristics of low cost but high accuracy to the time grating sensor.

scholarly journals A High Precision Time Grating Displacement Sensor Based on Temporal and Spatial Modulation of Light-Field

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 921 ◽  
Author(s):  
Min Fu ◽  
Changli Li ◽  
Ge Zhu ◽  
Hailin Shi ◽  
Fan Chen
Keyword(s):  
High Precision ◽  
Light Field ◽  
Light Transmission ◽  
Low Cost ◽  
Optimization Method ◽  
Spatial Modulation ◽  
Displacement Sensor ◽  
High Precision Measurement ◽  
Object Movement ◽  
Field Modulation

A new displacement sensor with light-field modulation, named as time grating, was proposed in this study. The purpose of this study was to reduce the reliance on high-precision measurements on high-precision manufacturing. The proposed sensor uses a light source to produce an alternative light-field simultaneously for four groups of sinusoidal light transmission surfaces. Using the four orthogonally alternative light-fields as the carrier to synthesize a traveling wave signal which makes the object movement in the spatial proportion to the signal phase shift in the time, the moving displacement of the object can be measured by counting time pulses. The influence of the light-field distribution on sensor measurement error was analyzed in detail. Aimed to reduce these influences, an optimization method that used continuous cosinusoidal light transmission surfaces with spatially symmetrical distribution was proposed, and the effectiveness of this method was verified with simulations and experiments. Experimental results demonstrated that the measurement accuracy reached 0.64 μm, within the range of 500 mm, with 0.6 mm pitch. Therefore, the light-field time grating can achieve high precision measurement with a low cost and submillimeter period sensing unit.

Development of Novel High Precision Angular Displacement Sensor

2010 ◽  
Vol 97-101 ◽  
pp. 4332-4336
Author(s):  
Liang Hua ◽  
Hao Feng ◽  
Ju Ping Gu
Keyword(s):  
High Precision ◽  
Software Design ◽  
Angular Displacement ◽  
Low Cost ◽  
Structure Design ◽  
Displacement Sensor ◽  
General Application ◽  
Interface Circuit ◽  
Displacement Sensors ◽  
Working Principle

This study put forward a novel high precision digital angular displacement sensor. The mechanical structure design of the sensor was completed. The working principle of angular displacement sensor was analyzed in detail. The hardware and software design of the interface circuit of the sensor was completed and the performance of the sensor was analyzed. Compared with the traditional angular displacement sensors, the angular displacement sensor proposed in this paper has features of high precision, efficiency, explicit structure, better maintainability, low cost, wide measuring range, direction-judgement, no need to adjust zero and it has general application value in industry field.

Research on a Novel Electrical Gear-Type Grating Sensor

2012 ◽  
Vol 236-237 ◽  
pp. 1307-1311
Author(s):  
Fang Yan Zheng ◽  
Zhong Hua Gao ◽  
Zi Ran Chen
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
Lower Layer ◽  
Low Cost ◽  
Single Layer ◽  
Middle Layer ◽  
Dynamic Measurement ◽  
High Precision Measurement ◽  
Static Measurement ◽  
Three Phase

The design scheme of electrical gear-type time grating sensor is presented for both dynamic measurement and static measurement. This sensor consists of upper layer, middle layer and lower layer. Symmetric three-phase windings are wound around gears of these three layers, respectively, and winds of each layer are staggered by 1/3 pitch. Inductance coils of sensor are embed in slots in another single layer of framework. This structure ensures that the number of pole pairs and probes is half the number of slots to realize high precision measurement with machining of low precision spatial division and low cost. Experiment results show that the accuracy of electrical gear-type sensor can achieve ±2″with multi-polygon autocollimator.

scholarly journals A low-cost high-precision measurement method of string motion

2014 ◽  
Vol 333 (17) ◽  
pp. 3881-3888 ◽  
Author(s):  
J.-L. Le Carrou ◽  
D. Chadefaux ◽  
L. Seydoux ◽  
B. Fabre
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
Measurement Method ◽  
Low Cost ◽  
High Precision Measurement

High precision measurement of the SOS surface thickness in the rough phase

1991 ◽  
Vol 1 (12) ◽  
pp. 1669-1673 ◽  
Author(s):  
Hans Gerd Evertz ◽  
Martin Hasenbusch ◽  
Mihail Marcu ◽  
Klaus Pinn ◽  
Sorin Solomon
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
High Precision Measurement ◽  
Surface Thickness
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