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人机交互是虚拟现实的关键技术,本文利用数据手套驱动虚拟机械手移动与抓取过程。首先构建了基于数据手套的机械手交互系统实验平台,通过MEMS传感器获取机械手运动轨迹,然后基于VC++ MFC程序界面创建了虚拟环境并对机械手移动与抓取过程进行动态仿真,实现虚拟机械手按照操作者的指令实时地完成移动和物体抓取等动作。 相似文献
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采用CSMC0.18μm混合信号工艺。设计了一款应用于频率综合器的单片集成宽带压控振荡器。电路采用互补交叉耦合结构,各部分都经过精心构架,如管子的尺寸,元件的布局,电流源的大小等等,以获得最佳的相位噪声性能。振荡器采用多段调节的方式,实现1.5~2.1GHz的宽带调谐。仿真结果表明,在电源电压1.8V的情况下,压控振荡器的中心频率为1.8GHz。中心频率附近(600kHz),相位噪声达到-121dBc/Hz,振荡器的工作电流为1.4mA。 相似文献
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反硝化过程中亚硝酸盐积累特性分析 总被引:4,自引:0,他引:4
在分段进水工艺处理城市废水实现深度脱氮(TN<5 mg·L-1)研究中,采用SBR反应器,分别以甲醇或葡萄糖为碳源研究了反硝化过程中亚硝酸盐(NO2--N)的积累情况、pH和ORP变化规律及动力学特性.结果表明,2种碳源系统、不同碳氮比(C/N)条件下反硝化过程均出现明显的NO2--N积累.相同C/N下,在NO2--N... 相似文献
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Ba1.03Ce0.6Zr0.2Yb0.2O3-α ceramic was prepared by solid state reaction. Phase composition, surface and cross-section morphologies of the material were characterized by using X-ray diffractometer (XRD) and scanning electron microscopy (SEM), respectively. Its chemical stability against carbon dioxide and water steam at high temperature was tested. Ionic conduction of the material was investigated by ac im-pedance spectroscopy and gas concentration cell methods under different gas atmospheres in the temperature range of 500-900 ℃. Using the ceramic as solid electrolyte and porous platinum as electrodes, the hydrogen-air fuel cell was constructed, and the cell performance at the tem-perature from 500 to 900 oC was examined. The results indicated that Ba1.03Ce0.6Zr0.2Yb0.2O3-α was a single-phase perovskite-type ortho-rhombic system, with high density and good chemical stability under carbon dioxide and water steam atmospheres at high temperature. In wet hydrogen, the material was a pure protonic conductor with the protonic transport number of 1 from 500 to 700 ℃, a mixed conductor of pro-ton and electron with the protonic transport numbers of 0.945-0.916 from 800 to 900 ℃. In wet air, the material was a mixed conductor of proton, oxide ion and electronic hole. The protonic transport numbers were 0.013-0.003, and the oxide ionic transport numbers were 0.346-0.265. Under hydrogen-air fuel cell conditions, the material was a mixed conductor of proton, oxide ion and electron, the ionic trans-port numbers were 0.945-0.848. The fuel cell could work stably, and at 900 ℃, the maximum power output density was 36.5 mW/cm2. 相似文献
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