High-Precision Large-Displacement Measuring Method with Walking Pattern
- Authors: Sang Y.1, Dai Y.1, Li H.1, Sun W.1, Wang X.1
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Affiliations:
- School of Mechanical Engineering, Dalian University of Technology
- Issue: Vol 62, No 2 (2019)
- Pages: 256-265
- Section: Laboratory Techniques
- URL: https://bakhtiniada.ru/0020-4412/article/view/160670
- DOI: https://doi.org/10.1134/S0020441219020283
- ID: 160670
Cite item
Abstract
A method for measuring large displacements >800 mm with a precision of 0.0094% and an accuracy of 0.0125%, realizing the principle of measurement with walking pattern and utilizing two analog high-precision small displacement sensors as the measuring unit is presented. A self-tuning fuzzy PID controller with high adaptability is used to make two identical measuring subsystems work coordinately for reaching a large displacement measurement. A series of tests are conducted to verify the effectiveness of the method. The results show that this method has a good performance. The influence of the mechanical deformation on measuring precision is discussed, and the functional relationship between mechanical structural deformation and measuring error is found in the experiment. A feasible compensation scheme is built to eliminate the error caused by mechanical deformation.
About the authors
Yong Sang
School of Mechanical Engineering, Dalian University of Technology
Author for correspondence.
Email: sangyong@dlut.edu.cn
China, Dalian City
Yuebang Dai
School of Mechanical Engineering, Dalian University of Technology
Email: sangyong@dlut.edu.cn
China, Dalian City
Hongkun Li
School of Mechanical Engineering, Dalian University of Technology
Email: sangyong@dlut.edu.cn
China, Dalian City
Weiqi Sun
School of Mechanical Engineering, Dalian University of Technology
Email: sangyong@dlut.edu.cn
China, Dalian City
Xudong Wang
School of Mechanical Engineering, Dalian University of Technology
Email: sangyong@dlut.edu.cn
China, Dalian City
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