The Multi-Joint Measuring Arm’s Error Compensation Method Based on the Pose Configurations

2011 ◽  
Vol 117-119 ◽  
pp. 751-755
Author(s):  
Hui Yuan Xiong ◽  
You Xu ◽  
Zhi Jian Zong ◽  
Qun Gao
Keyword(s):  
Error Compensation ◽  
Measurement Accuracy ◽  
Orthogonal Design ◽  
Single Point ◽  
Compensation Method ◽  
Polynomial Model ◽  
Point Measurement ◽  
Calibration Algorithm

The multi-joint measuring arm’s measurement accuracy is associated with the measuring pose configuration. As the feature of the multi-joints arm with the adjacent joint orthogonal design, the triangle-based representation of measuring arm configuration was derived. Then measuring arm pose configuration simplified representation was presented. Based on the simplified representation, a polynomial model of comprehensive error compensation was proposed, and the calibration algorithm was derived.Tests confirmed the effectiveness of the method, which can effectively improve the single-point measurement accuracy.

Error Compensation in One-Point Inclined-Axis Nanogrinding Mode for Small Aspheric Mould

2010 ◽  
Vol 97-101 ◽  
pp. 4206-4212 ◽  
Author(s):  
Shao Hui Yin ◽  
Feng Jun Chen ◽  
Yu Wang ◽  
Yu Feng Fan ◽  
Yong Jian Zhu ◽  
...  
Keyword(s):  
Error Compensation ◽  
Single Point ◽  
Ground Surface ◽  
Compensation Method ◽  
Grinding Wheel ◽  
Form Error ◽  
Profile Data ◽  
Profile Error ◽  
Form Accuracy ◽  
Setting Error

A compensation method was proposed for correcting wheel setting error and residual form error in nanogrinding of axisymmetric surfaces. In this method, profile data from on-machine measurement were used to obtain the setting error of grinding wheel, as well as the normal residual form error. Compensation model of single-point inclined-axis grinding was built up for generating new compensation path. Grinding test of aspheric tungsten carbide mould was conducted to evaluate performances of the compensation method. A profile error of 182 nm (peak to valley) and average surface roughness of 1.71 nm were achieved. These results indicated that the form error compensation method may significantly improve form accuracy of ground surface.

Research on the Compensation Method of Installation Errors in Guideway Straightness Measurement with PSD

2012 ◽  
Vol 630 ◽  
pp. 389-395
Author(s):  
Rui Fan ◽  
Di Zhang
Keyword(s):  
Significant Influence ◽  
Error Compensation ◽  
Measurement Accuracy ◽  
Compensation System ◽  
Compensation Method ◽  
Error Angle ◽  
Compensation Theory ◽  
Straightness Error ◽  
After Error

Influence and Compensation Theory of Installation Errors in Guideway Straightness Measurement with PSD Is Analyzed. it Shows that Pincushion Distortion Affects PSD’s Accuracy, while Angle θ between Laser and Guideway, Error Angle Caused by Straightness Error and Angle β Generated when PSD Rotates about the Guideway Have Significant Influence on System Measurement Accuracy. PSD’s Pincushion Distortion Could Be Corrected and Installation State Can Be Determined by Measuring on Site and Calibrating with Laser Tracer. after Error Compensation, System Measurement Accuracy Is Greatly Improved.

Error Compensation Method of Harmonic Analysis for Time Grating Sensor

2011 ◽  
Vol 121-126 ◽  
pp. 3850-3854
Author(s):  
Zi Ran Chen ◽  
Dong Lin Peng ◽  
Yong Zheng ◽  
Fang Yan Zheng ◽  
Tian Heng Zhang
Keyword(s):  
Harmonic Analysis ◽  
High Precision ◽  
Measurement System ◽  
Error Compensation ◽  
Production Cost ◽  
Measurement Accuracy ◽  
Compensation Method ◽  
Precision Time ◽  
Error Tracing ◽  
Mechanical Machining

Due to the complexity of measurement system, it is hard correct errors by using traditional error separation and error tracing technology. To reduce the production cost and improve the measurement accuracy, a novel error compensation method based on harmonic analysis is presented in this paper. In this way, high precision time grating sensors can be manufactured with low precision mechanical machining method. The experiment results prove that errors can be reduce within ±2″.

Laser Timing Probe with Frequency Mapping for Locating Signal Maxima

2009 ◽  
Author(s):  
L.S. Koh ◽  
H. Marks ◽  
L.K. Ross ◽  
C.M. Chua ◽  
J.C.H. Phang
Keyword(s):  
Response Time ◽  
Continuous Wave ◽  
Single Point ◽  
Point Measurement ◽  
Cw Laser ◽  
Measurement Capabilities

Abstract A Laser Timing Probe (LTP) system which uses a noninvasive 1.3 µm continuous wave (CW) laser with frequency mapping and single point measurement capabilities is described. The frequency mapping modes facilitate the localization of signal maxima for subsequent single point measurements. Measurements of waveforms with long delays and 50 ps response time from NMOS and PMOS transistors are also shown.

A channel phase error compensation method for multi-channel synthetic aperture ladar

Optik ◽  
2019 ◽  
Vol 178 ◽  
pp. 830-840
Author(s):  
Shuai Wang ◽  
Maosheng Xiang ◽  
Bingnan Wang ◽  
Fubo Zhang ◽  
Yirong Wu
Keyword(s):  
Error Compensation ◽  
Phase Error ◽  
Compensation Method ◽  
Synthetic Aperture
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