虚拟油泥造型技术中的实时力反馈仿真研究  

Research on Real-time Force Feedback Simulation of Virtual Clay Modeling System

作　　者：侯增选[1] 徐军[1] 郭超[1] 杨修伟[1] 杨广卿 HOU Zengxuan;XU Jun;GUO Chao;YANG Xiuwei;YANG Guangqing(School of Mechanical Engineering,Dalian University of Technology,Dalian Liaoning 116024,China)

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024

出　　处：《机床与液压》2018年第19期97-100,83,共5页Machine Tool & Hydraulics

基　　金：国家自然科学基金资助项目(51175058)

摘　　要：将力反馈技术引入虚拟油泥造型过程。通过分析刮削、填补和刮补过程中不同的力觉行为,分别提出了刮削、填补和刮补过程的力反馈仿真模型。通过计算材料的实时刮削量、填补量得到单位时间内材料刮削率和填补率;根据材料属性,分别引入刮削力反馈因子、填补力反馈因子来计算反馈力;最后根据刮削和填补的反馈力得出刮补的反馈力,通过反馈力实现虚拟油泥造型控制。将该方法应用到基于力反馈技术的虚拟油泥造型系统中,通过使用Phantom Desktop力反馈设备成功实现了具有力觉反馈的虚拟油泥造型。仿真结果表明:该方法降低了油泥造型控制难度,增强了造型过程的真实感。Force feedback technology was applied to virtual clay modeling system.Three force feedback models were proposed by analyzing force behavior in cutting,pasting and cutting-pasting process.Scrape rate and fill rate per unit time were obtained by calculating real time scraping amount and fill amount.According to the material properties,the scraping force feedback factor and fill force feedback factor were introduced.Cutting-pasting force feedback was calculated according to scraping and fill force feedback.Virtual clay modeling was controlled by force feedback.With Phantom Desktop force interaction equipment,force reaction was successfully implemented in virtual clay modeling system.Simulation experiments prove that the model meets the demands of the virtual clay modeling,making the process of modeling more realistic and improving the efficiency.

关 键 词：虚拟油泥造型 实时力反馈 造型方法 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]