Research on a Precision Calibration Model of a Flexible Strain Sensor Based on a Variable Section Cantilever Beam
The flexible strain sensor’s measuring range is usually over 5000 με, while the conventional variable section cantilever calibration model has a measuring range within 1000 με. In order to satisfy the calibration requirements of flexible strain sensors, a new measurement model was proposed to solve...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/10/4778 |
| _version_ | 1797598376156463104 |
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| author | Qi Wang Jianjun Cui Yanhong Tang Liang Pang Kai Chen Baowu Zhang |
| author_facet | Qi Wang Jianjun Cui Yanhong Tang Liang Pang Kai Chen Baowu Zhang |
| author_sort | Qi Wang |
| collection | DOAJ |
| description | The flexible strain sensor’s measuring range is usually over 5000 με, while the conventional variable section cantilever calibration model has a measuring range within 1000 με. In order to satisfy the calibration requirements of flexible strain sensors, a new measurement model was proposed to solve the inaccurate calculation problem of the theoretical strain value when the linear model of a variable section cantilever beam was applied to a large range. The nonlinear relationship between deflection and strain was established. The finite element analysis of a variable section cantilever beam with ANSYS shows that the linear model’s relative deviation is as high as 6% at 5000 με, while the relative deviation of the nonlinear model is only 0.2%. The relative expansion uncertainty of the flexible resistance strain sensor is 0.365% (k = 2). Simulation and experimental results show that this method solves the imprecision of the theoretical model effectively and realizes the accurate calibration of a large range of strain sensors. The research results enrich the measurement models and calibration models for flexible strain sensors and contribute to the development of strain metering. |
| first_indexed | 2024-03-11T03:20:18Z |
| format | Article |
| id | doaj.art-5582af915a6f4a0f803e7d1fc3392903 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T03:20:18Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-5582af915a6f4a0f803e7d1fc33929032023-11-18T03:12:27ZengMDPI AGSensors1424-82202023-05-012310477810.3390/s23104778Research on a Precision Calibration Model of a Flexible Strain Sensor Based on a Variable Section Cantilever BeamQi Wang0Jianjun Cui1Yanhong Tang2Liang Pang3Kai Chen4Baowu Zhang5School of Information Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, ChinaNational Institute of Metrology, Beijing 100029, ChinaMetrology and Testing Institute of Tibet Autonomous Region, Lhasa 850000, ChinaMetrology and Testing Institute of Tibet Autonomous Region, Lhasa 850000, ChinaNational Institute of Metrology, Beijing 100029, ChinaCollege of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, ChinaThe flexible strain sensor’s measuring range is usually over 5000 με, while the conventional variable section cantilever calibration model has a measuring range within 1000 με. In order to satisfy the calibration requirements of flexible strain sensors, a new measurement model was proposed to solve the inaccurate calculation problem of the theoretical strain value when the linear model of a variable section cantilever beam was applied to a large range. The nonlinear relationship between deflection and strain was established. The finite element analysis of a variable section cantilever beam with ANSYS shows that the linear model’s relative deviation is as high as 6% at 5000 με, while the relative deviation of the nonlinear model is only 0.2%. The relative expansion uncertainty of the flexible resistance strain sensor is 0.365% (k = 2). Simulation and experimental results show that this method solves the imprecision of the theoretical model effectively and realizes the accurate calibration of a large range of strain sensors. The research results enrich the measurement models and calibration models for flexible strain sensors and contribute to the development of strain metering.https://www.mdpi.com/1424-8220/23/10/4778flexible sensorvariable section cantilever beamlarge deflectionstraincalibration model |
| spellingShingle | Qi Wang Jianjun Cui Yanhong Tang Liang Pang Kai Chen Baowu Zhang Research on a Precision Calibration Model of a Flexible Strain Sensor Based on a Variable Section Cantilever Beam Sensors flexible sensor variable section cantilever beam large deflection strain calibration model |
| title | Research on a Precision Calibration Model of a Flexible Strain Sensor Based on a Variable Section Cantilever Beam |
| title_full | Research on a Precision Calibration Model of a Flexible Strain Sensor Based on a Variable Section Cantilever Beam |
| title_fullStr | Research on a Precision Calibration Model of a Flexible Strain Sensor Based on a Variable Section Cantilever Beam |
| title_full_unstemmed | Research on a Precision Calibration Model of a Flexible Strain Sensor Based on a Variable Section Cantilever Beam |
| title_short | Research on a Precision Calibration Model of a Flexible Strain Sensor Based on a Variable Section Cantilever Beam |
| title_sort | research on a precision calibration model of a flexible strain sensor based on a variable section cantilever beam |
| topic | flexible sensor variable section cantilever beam large deflection strain calibration model |
| url | https://www.mdpi.com/1424-8220/23/10/4778 |
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