| Design and passive analysis of a novel softness display device |
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| 作者姓名： | 吴涓 Song Aiguo Li Jianqing |
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| 作者单位： | School of Instrument Science and Engineering, Southeast University, Nanjing 210096, P.R. China |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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国家自然科学基金 |
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| 摘 要： | Simulating the softness property of object is quite a challenge in virtual reality system. A novel softness display system was developed based on the principle of deformable length of elastic element control （DLEEC）. In the system, the equivalent stiffness of the device is adjustable, and is inversely proportional to the third power of the deformable length of elastic beam. PD position control is employed to guarantee the accurate softness display. The softness of the virtual objects in large scale can be felt with the softness display device. Compared with other haptic devices, the device is passive and exert the react force only when the operator ＂actively touch＂ the virtual objects. The stability of the softness display system was analyzed. It was theoretical proved that the system satisfied the criteria of wide impedance range ＂Z-width＂, and the performance was superior to an active system. The experimental results were presented.
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| 关 键 词： | 柔性显示装置 弹性束 虚拟现实系统 弹性有限控制 |
| 修稿时间： | 2006-04-03 |
Design and passive analysis of a novel softness display device |
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| Wu Juan,Song Aiguo,Li Jianqing.Design and passive analysis of a novel softness display device[J].High Technology Letters,2007,13(3):239-243. |
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| Authors: | Wu Juan Song Aiguo Li Jianqing |
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| Institution: | School of Instrument Science and Engineering, Southeast University, Nanjing 210096, P.R.China |
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| Abstract: | Simulating the softness property of object is quite a challenge in virtual reality system. A novel softness display system was developed based on the principle of deformable length of elastic element control ( DLEEC). In the system, the equivalent stiffness of the device is adjustable, and is inversely proportional to the third power of the deformable length of elastic beam. PD position control is employed to guarantee the accurate softness display. The softness of the virtual objects in large scale can be felt with the softness display device. Compared with other haptic devices, the device is passive and exert the react force only when the operator "actively touch" the virtual objects. The stability of the softness display system was analyzed. It was theoretical proved that the system satisfied the criteria of wide impedance range"Z-width", and the performance was superior to an active system. The experimental results were presented. |
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| Keywords: | softness display elastic beam virtual reality passive |
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