Accuracy Analysis and Experimental Study of a Six-Dimensional Force Sensor with Circular Flexible Spherical Joints
Abstract
:1. Introduction
2. Configuration and Stiffness Modeling of the Novel Circular Flexible Spherical Joints
2.1. Configuration of the Novel Circular Flexible Spherical Joint
- Easy to process, circular notch can be milled to reduce processing difficulty.
- Strong applicability, suitable for various occasions
- It has good isotropic performance and adopts a symmetrical structure, achieving the same stiffness in both directions.
2.2. Stiffness Modeling of the Novel Circular Flexible Spherical Joints
3. Configuration Six-Dimensional Force Sensor with Circular Flexible Spherical Joints
4. Stiffness Modeling of the Six-Dimensional Force Sensor with Circular Flexible Spherical Joints
4.1. Stiffness Matrix Modeling of Flexible Beam with a Rectangular Cross-Section
4.2. Stiffness Matrix Modeling of Measurement Branch
4.3. Stiffness Matrix Modeling of Six-Dimensional Force Sensor with a Circular Flexible Spherical Joint
5. Force Mapping Matrix Analysis of the Six-Axis Force Sensor with Circular Flexible Spherical Joints
6. The Influence of the Circular Flexible Spherical Joints on the Accuracy of Six-Dimensional Force Sensor
- According to Figure 8, when R and t are constant, the larger is, the smaller Euclidean distance of the difference matrix is, similarly the smaller is, the larger Euclidean distance of the difference matrix is;
- According to Figure 9, when R and are constant, the larger t is, the larger Euclidean distance of the difference matrix is, similarly the smaller t is, the smaller Euclidean distance of the difference matrix is;
- According to Figure 10, when t and are constant, the larger R is, the smaller Euclidean distance of the difference matrix is, similarly the smaller R is, the larger Euclidean distance of the difference matrix is;
- The parameter t has the largest influence on Euclidean distance, followed by R, and the influence of is the smallest.
7. Instance Verification
7.1. Verification through the Finite Element Method
7.2. Verification through the Experimental Method
8. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Wang, Z.; Zhang, X.; Li, M. Accuracy Analysis and Experimental Study of a Six-Dimensional Force Sensor with Circular Flexible Spherical Joints. Sensors 2023, 23, 7247. https://doi.org/10.3390/s23167247
Wang Z, Zhang X, Li M. Accuracy Analysis and Experimental Study of a Six-Dimensional Force Sensor with Circular Flexible Spherical Joints. Sensors. 2023; 23(16):7247. https://doi.org/10.3390/s23167247
Chicago/Turabian StyleWang, Zhijun, Xiaotao Zhang, and Mengxiang Li. 2023. "Accuracy Analysis and Experimental Study of a Six-Dimensional Force Sensor with Circular Flexible Spherical Joints" Sensors 23, no. 16: 7247. https://doi.org/10.3390/s23167247
APA StyleWang, Z., Zhang, X., & Li, M. (2023). Accuracy Analysis and Experimental Study of a Six-Dimensional Force Sensor with Circular Flexible Spherical Joints. Sensors, 23(16), 7247. https://doi.org/10.3390/s23167247