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浏览/检索结果: 共2条，第1-2条 帮助 限定条件 发表日期：2011    内容类型：会议论文    专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 The design of analog video data grabber system based on TMS320VC33 and SAA7111A (EI CONFERENCE) 会议论文 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China Geng T.-W.; Wang Z.-Q.; Liu S.-J.; Li D.-N.; Yu S.-B. 收藏  |  浏览/下载：10/0  |  提交时间：2013/03/25 Analog video data grabber system based on TMS320VC33 and SAA7111A is proposed for a kind of automatic optical alignment measuring device. System uses the enhanced video processing chip SAA7111A to complete A/D conversion. The function of SAA7111A and the register configuration method of I2C Bus are introduced in the paper. System uses FPGA to control video data grabber and collaborative work of DSP. DSP processes video data. The paper gives design method of hardware and software. Experimental results indicate that the system can satisfy the requirements. 2011 IEEE.   Data processing method of multi-position strap-down north seeking system based on SVD (EI CONFERENCE) 会议论文 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China Shen C.-W.; Liu C.; Yu S.-B.; Wang Z.-Q.; Li J.-R. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 With the aim to fit the sin wave curve of a multi-position strap-down north seeking system and to calculate the real north angle accurately  the principles of the system and the algorithm of singular value decomposition(SVD) are introduced. The factors influencing the measuring precision are also analyzed. Then  the algorithm is adopted to fit curves. Experimental results indicate that the singular value decomposition is very precise  for its error sum is 1.1102V  and the squared error is 2.8mV. Moreover  for phase angle measurement  measured six times in same direction  the squared error is 24 (1). The method based on SVD can satisfy the system precision requirements of curve-fitting north seeking systems. 2011 IEEE.