Minimizing the Energy Consumption for a Hexapod Robot Based on Optimal Force Distribution

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Abstract

Legged robots have demonstrated significant achievements in recent years. Some legged robots have considerable flexibility and movement abilities. However, certain obstacles restrict the practical application of legged robots, such as their high energy consumption. The energy consumption of a legged robot is significantly higher than that of a wheel robot of the equivalent size for the same walking distance. Reducing the energy consumption of legged robots is important for their practical application and further development. This study proposes a quadratic-programming force-distribution controller, which minimizes the energy consumption of hexapod robots. The controller reduces the energy consumption by optimizing the instantaneous power of the robot at each time step. In a simulation environment, the proposed method reduced the energy consumption by up to 9.43% and 6.30% in flat terrain and sloped terrain, respectively, compared with two other methods. In hexapod robot experiment, the proposed method can reduce energy consumption by 5.72% compared with position control.

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Wang, G., Ding, L., Gao, H., Deng, Z., Liu, Z., & Yu, H. (2020). Minimizing the Energy Consumption for a Hexapod Robot Based on Optimal Force Distribution. IEEE Access, 8, 5393–5406. https://doi.org/10.1109/ACCESS.2019.2962527

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