Method for automatically synthesizing topology embryonic graph of closed loop kinematic chain based on loop theory

Abstract

The invention discloses a method for automatically synthesizing a topology embryonic graph of a closed loop kinematic chain based on a loop theory, and belongs to the field of mechanism creative design and intelligent computer aided design (CAD). The method comprises the following steps of: determining member classification arrays of the kinematic chain based on the known basic parameters of the kinematic chain; determining an embryonic graph synthesis equation set corresponding to each member classification array, and solving the equation sets one by one; separably distinguishing the obtained solution based on a loop adjacency relation of the loop theory; obtaining a characteristic adjacency matrix which has a one-to-one corresponding relation with the embryonic graph for inseparable solution based on the largest loop, circumference loop and standard label of the loop theory, and distinguishing isomorphism accordingly; and automatically generating the topology embryonic graph of the closed loop kinematic chain based on the characteristic adjacency matrix. By the method, the topology embryonic graph of the mechanism kinematic chain is synthesized in a man-machine interaction mode in real time.

Description

technical field [0001] The invention relates to a comprehensive method for a closed-loop kinematic chain topology embryo map, and belongs to the fields of mechanism innovation design and intelligent CAD. Background technique [0002] One of the most creative and dynamic phases of the mechanical design process is the analysis and synthesis of the topology of the mechanism. Structural synthesis can not only optimize the structure of various existing mechanisms, but also invent and create new mechanisms, which is the original innovation of mechanical products. [0003] For a long time, the synthesis of mechanism structure types has always been carried out by designers relying on their experience, intuition and other elementary methods. As topological diagrams and embryonic diagrams are used to describe and synthesize the topological structure of kinematic chains, a large number of mechanism kinematic chains with various numbers of components and degrees of freedom are synthesi...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of low efficiency of manual construction of embryonic diagrams and the impossibility of complex mechanical equipment, to propose an automatic synthesis method of closed-loop kinematic chain topology embryonic diagrams based on loop theory, and to promote innovative design of mechanisms and intelligent CAD. develop

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