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In order to realize adaptive quadruped locomotion on terrains with different properties (such as surface friction or elasticity modulus), we plan to collect the foot-ground contact force and gyroscope information during locomotion on different ground substrates, then classify the ground substrates with the feature vector extracted from the collected data using Support Vector Machine (SVM) algorithm...
Central Pattern Generator (CPG) can be used to generate rhythmic control signals for quadruped locomotion, such as walk, trot, and gallop gait. The walk gait is a statically stable quadruped gait, and suitable for enhancing the robustness of robots. However, as a result of lacking consideration of dynamics characteristics of robots, the swing phase of control signals generated by CPG may be not consistent...
In this paper we analyze characteristics of the ground reaction force (GRF) experienced by the legs of the quadruped robot during stance phase in walk gait, in particular, when the height of center of gravity (COG) of the quadruped robot is changeable. We also build the dynamics model of the quadruped robot. Two dynamics equations during swing phase and stance phase are established, respectively....
Although flying boats have been studied for over one hundred yeas, simulation of flying boats in waves and controllers designing for flying boats are still new research fields. After analyzing the forces acting on a flying boat, the flying boat is modeled in this paper as a special airplane. The forces from water are discussed and calculated by the 2-dimensional (2D) strip theory which is widely used...
To solve the level-adjusting and force-tuning problems of high accurate and costly payloads when loading and unloading, a cable-driven auto-leveling parallel robot is developed. A hierarchical fuzzy controller, which has the ability to deal with the rule explosion problem, is proposed in this paper. After a brief introduction of the architecture of the closed-loop control system for the cable-driven...
This paper concerns the fields of the eccentric payload crane systems. We firstly introduce a four-rope-driven self-levelling crane system, which can adjust the payload to level precisely and safely by changing the lengths of the ropes. Then, the system model is deduced according to force equation, moment equation principles and geometry restrictions, without considering the acceleration items. Finally,...
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