一种基于弹簧模型的作用力视觉反馈方法

A Force Visual Feedback Method Based on Spring Model

在虚拟拆装系统中,为了增强用户的"沉浸感",会引入力反馈设备,但目前力反馈设备价格昂贵,同时力反馈算法也不成熟,二者导致了力反馈的引入无法商用和推广。为使用户在无力反馈设备的虚拟拆装系统中感受到操作时作用力的变化,提出了一种基于弹簧模型的作用力视觉反馈方法,构造一个可形变、带标尺的弹簧来代表虚拟手,将拆装关系变化时引起的力反馈通过弹簧的实时形变来表达,用视觉反馈形象化地表现了力觉反馈,取得了良好的实际效果。实验证明,此方法既降低了虚拟拆装系统的研发难度,又节约了虚拟拆装系统开发与推广的成本,具有较好的推广和使用价值。

Force feedback devices are introduced in order to enhance the ＂immersion＂ of users in virtual disassembly system, but so far force feedback devices are expensive and force feedback algorithms are not fully developed, which leads to the hardness of putting force feedback into commercial use and spreading it broadly. In order to let users feel the chan.ge of acting force during manipulation without using force feedback devices, presents a force visual feedback method based on a spring model which is transformable and with a ruler on it, When any force occurs caused by the change of disassembling relationships, it can be expressed by the real time transforming of the spring and it works well in our virtual disassembly system. The method is worth using because it can save a lot of system developing and spreading cost while avoid the hardness of researching into real force feedback,