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Touch sensation force feedback simulation model modeling method

A technology of simulation model and modeling method, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve the problems that the tactile force feedback simulation model cannot meet the requirements of virtual clay modeling technology, etc.

Inactive Publication Date: 2008-09-24
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The simulation model of mass point-spring-damper tactile force feedback cannot meet the requirements of virtual clay modeling technology based on material removal method

Method used

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  • Touch sensation force feedback simulation model modeling method
  • Touch sensation force feedback simulation model modeling method
  • Touch sensation force feedback simulation model modeling method

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Embodiment Construction

[0017] Refer to attached picture.

[0018] The present invention is illustrated by taking the modeling experiment of the tactile force feedback simulation model based on the material removal rate as an example.

[0019] 1. Build virtual scraping models and modeling tools.

[0020] In this embodiment, the virtual scraping model is a cube with a size of 15 mm×15 mm×15 mm. The modeling tool is a rectangular flat scraper. According to the size of the virtual scraping model, the rectangular flat scraper is selected to be 20 mm long, 5 mm wide, and 0.5 mm thick. Use solid modeling techniques to construct virtual scraping models and modeling tools.

[0021] 2. Determine the starting position of the modeling tool.

[0022] Move the modeling tool through the Phantom Desktop force feedback device to make it contact with the surface of the virtual scraping model, and the current position of the modeling tool is its starting position. Whether the modeling tool is in contact with the v...

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Abstract

The invention discloses a tactile force feedback simulation model modeling method, which is characterized in that the method includes the following steps: firstly, a solid modeling technology is adopted for constructing a virtual scraping model and the solid modeling technology is adopted for constructing a modeling tool according to the size of the virtual scraping model. Then, the modeling tool is moved through a piece of force feedback equipment. The swept volume of the modeling tool from a starting position to a target position is constructed through the solid modeling technology. The swept volume is used for a Boolean difference calculation on the virtual scraping body to finish the scraping modeling process. And a material resection amount Vcut is calculated through the solid modeling technology. Then a material resection rate Rcut which is equal to Vcut / t is obtained through the calculation. The material hardness ratio h of the virtual scraping model which is 0.1-0.9 is selected according to the model requirement. The constructed tactile force feedback simulation model Fcut is equal to h*Lambada*Rcut. The method takes advantage of the virtual environment of a computer to implement the scraping modeling on the virtual scraping body, calculate the material scraping amount in unit time and according to a feedback force parameter and the material hardness ratio, a relation model between the feedback force and the material resection rate is established.

Description

technical field [0001] The invention relates to a method for modeling a tactile force feedback simulation model. Background technique [0002] There are two methods of virtual clay modeling: one based on geometric deformation and the other based on material removal. Haptic force feedback technology can realize the control of the virtual clay modeling process by the stylist through the sense of force, and enhance the realism of the sculpting process, which is an effective sculpting control method. The haptic force feedback technology has been introduced into the virtual clay modeling technology based on the geometric deformation method, but the application of the tactile force feedback technology has not been seen in the virtual clay modeling technology based on the material removal method. [0003] Literature "Sener B., Wormald P., Campbell I. Towards 'Virtual Clay' Modeling-Challenges and Recommendations: A Brief Summary of the Literature. Proceedings of the DESIGN 2002 7 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 侯增选闫锋欣孙蓓宁志鹏祁小苑
Owner NORTHWESTERN POLYTECHNICAL UNIV
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