Two-degree-of-freedom humanoid ankle joint

Abstract

The invention discloses a two-degree-of-freedom humanoid ankle joint. The two-degree-of-freedom humanoid ankle joint comprises a upper shank part, a lower shank part, a driving device I, a driving device II, a double-jointed component, a foot and a brake cable; the double-jointed component comprises an ankle joint driving device and a subtarlar joint driving device; the ankle joint driving device comprises an ankle joint shaft; the subtarlar joint driving device comprises a subtarlar joint shaft; the ankle joint comprises an upper shaft and a lower shaft, wherein the upper shaft is the ankle joint shaft, and the lower shaft is the subtarlar joint shaft; and the ankle joint shaft and the subtarlar joint shaft are in space cross, and the axes of the ankle joint shaft and the subtarlar joint shaft are not in the same plane. The two-degree-of-freedom humanoid ankle joint provided by the invention can be used for a humanoid robot and improves the personification of a humanoid robot. The mechanism can achieve three movement angles by controlling two parameters, namely, the space two-degree-of-freedom mechanism approximately achieves the three-degree-of-freedom movement of the ankle joint and improves the flexibility of the movement.

Description

Technical field [0001] The invention relates to a component structure of a robot, specifically a two-degree-of-freedom human-like ankle joint. Background technique [0002] In recent years, robot technology has developed rapidly, and robots have been widely used in industry, agriculture, service, medical, military and other fields. As one of the most cutting-edge issues in the field of robotics, bipedal walking robots that simulate human walking integrate multiple disciplines such as mechanics, control, and artificial intelligence, reflecting the level of intelligence and automation research in a country. The ankle joint is a key component of the biped robot, and its flexibility and anthropomorphism largely determine the mobility and anthropomorphism of the biped robot's walking. Therefore, it is very important to design biped robot ankle joints with high anthropomorphism and good flexibility. [0003] There are many types of ankle joint structures of humanoid robots currently pu...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many kinds of ankle joint structures of humanoid robots. The early humanoid robot 2-degree-of-freedom ankle joints generally adopt the arrangement of two joint axis spaces perpendicular to each other and serial drive, mainly Ohio University and National University of Defense Technology. , Harbin Institute of Technology, the degree of freedom configuration of this mechanism and its driving method are simple, but the driving motor of the ankle joint and its deceleration device increase the swing inertia of the leg, making it difficult to control and it is difficult to achieve fast walking

At present, the ankle joints of most humanoid robots represented by ASIMO adopt a Hooke hinge mechanism with 2 degrees of freedom. The two joint axes of the forward swing and side swing of the mechanism are perpendicular to each other. The robot with this degree of freedom configuration often uses a harmonic reducer. (or with synchronous belt) fixed transmission ratio device, its driving mechanism and driving method make the structure of the ankle complex

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