Abstract
The estimation of soil properties is crucial for legged robots during planetary exploration missions. A virtual-sensor-based soil classification approach for legged robots is proposed in this paper. Instead of installing extra force sensors on the foot of the robot, joint motion information from joint position sensors and current signals from joint motors on the leg are recorded and used as the dataset in classification. The collected data is decomposed using the Discrete Wavelet Transform and assigned a soil type by a Support Vector Machine (SVM). This approach is validated on a dataset acquired from a high-fidelity simulation model of a hexapod robot, and the classification accuracy of more than 90% was achieved. Different SVM models are used in classification for comparative analysis, and the contributions of the different signals to the classification performance are evaluated. Experimental results demonstrate that the proposed approach can estimate the soil properties with a good performance and rapid forecasting speed.
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Acknowledgement
This research was supported in part by the National Natural Science Foundation of China (No. 51875393) and by the China Advance Research for Manned Space Project (No. 030601).
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Wu, S., Chen, L., Liu, B., Wang, C., Wei, Q., Wang, Y. (2019). Virtual-Sensor-Based Planetary Soil Classification with Legged Robots. In: Yu, H., Liu, J., Liu, L., Ju, Z., Liu, Y., Zhou, D. (eds) Intelligent Robotics and Applications. ICIRA 2019. Lecture Notes in Computer Science(), vol 11743. Springer, Cham. https://doi.org/10.1007/978-3-030-27538-9_32
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