Generative design method for planar mechanism with given motion trail

A motion trajectory, plane mechanism technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as inability to fit, and achieve the effect of strong design ability, high efficiency, and simple operation

Active Publication Date: 2019-11-08
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0005] Therefore, those skilled in the art are committed to developing an integrated scheme of design simulation optimization, based on the existing human-experienced mechanism design method, transforming the configuration design problem into computer language, and all design work can be automatically completed by the computer, reducing labor The amount and the error caused by human design, with the predetermined trajectory as the optimization object, a new generative planar mechanism design method is proposed, which solves the problems existing in the mechanism design method of human experience and the existing topology optimization method of the mechanism. The problem of trajectory fitting

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  • Generative design method for planar mechanism with given motion trail
  • Generative design method for planar mechanism with given motion trail
  • Generative design method for planar mechanism with given motion trail

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[0057] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0058] In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals.

[0059] The method provided by the invention is to fit the predetermined trajectory by automatically generating the mechanism configuration and optimizing the joint position. Since the method is relatively abstract, the specific implementation plan will be explained with a case. This case is just one example of the method.

[0060] The technical solution is as follows:

[0061] Step 1: Build a Mathematical Model

[0062] ...

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Abstract

The invention discloses a generative design method for a planar mechanism with a given motion trail, and relates to the field of planar mechanism design. The generative design method comprises the following steps: step 1, establishing a mathematical model; step 2, generating a mechanism configuration; step 3, carrying out kinematics simulation and mechanism parameter optimization; and step 4, obtaining a final design. Compared with the prior art, the technical scheme provided by the invention has the following advantages: 1, the operation is simple; 2, the efficiency is high, and the design, simulation and optimization are integrated, and the secondary design caused by segmentation is avoided; and 3, the design capability is strong, and for complex problems, a better design scheme cannot be found by means of subjective consciousness and experience.

Description

technical field [0001] The invention relates to the field of planar mechanism design, in particular to a method for designing a planar mechanism under a given motion track. Background technique [0002] Trajectory synthesis is one of the earliest methods to solve mechanism trajectory fitting. The basic idea is to calculate the trajectory of the mechanism under different parameters for a given mechanism, such as a four-bar linkage mechanism (see reference: Zhao Yanwei, Planar four-bar mechanism trajectory synthesis method and visual expression [D], Harbin Institute of Technology, 2014). This method needs to compare the predetermined trajectory with all existing trajectories to find the best matching parameter scheme. Trajectory synthesis pre-generates the trajectory database through different mechanism parameters, which requires a large amount of labor. At the same time, the specific trajectories in the database often cannot meet the requirements of the complexity and dive...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 周明东宋烨麟
Owner SHANGHAI JIAO TONG UNIV
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