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浏览/检索结果: 共6条，第1-6条 帮助 限定条件 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 Research on thermistor simulation based on digital potentiometer for microsatellites 会议论文 4th International Conference on Instrumentation and Measurement, Computer, Communication and Control, IMCCC 2014, September 18, 2014 - September 20, 2014, Harbin, Heilongjiang, China Guangquan Z.; Jiwei Z.; Sirui X.; Wei X. 收藏  |  浏览/下载：9/0  |  提交时间：2015/04/27 The research on test scheme of the digital Electromechanical Actuator based on CAN Bus (EI CONFERENCE) 会议论文 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China Zhang J.; Zhang Y. 收藏  |  浏览/下载：26/0  |  提交时间：2013/03/25 In order to realize the digital of Electromechanical Actuator(EMA) control system  the CAN Bus  which has efficient reliable performance and flexible network modes  works as data interface.The EMA test scheme is designed based on the CAN Bus.First of all  the microcontroller DSP with the CAN Bus works as the core of the EMA control system circuit boards.Then the CAN Bus test network is established with the EMA  Ground Test System and Autopilot computer.The function and self-check of the EMA canbe conveniently tested by the network and the result of the test canbe easily displayed in the PC.Finally  the CAN Bus test network is established with the EMA  the Frequency Characteristics Scanner and etc.The purpose is to test the performance of the EMA.The result of the test can be intuitively showed on the Frequency Characteristics Scanner.In a word  the application of the CAN bus provides a new method to test the EMA and reference to engineering the digital EMA  which has vital significance. 2011 IEEE.   A small thickness measurement system based on PSD and FPGA (EI CONFERENCE) 会议论文 3rd International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2011, January 6, 2011 - January 7, 2011, Shanghai, China Guo J.; He X.; Wei Z.; Wu Y. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 Considering that the requirement of industrial manufacture  An AT89S51 singlechip works as the core processor of the system. By two laser triangulation  a small thickness measurement system based on PSD and FPGA is presented. It takes S3931 PSD of one dimension as position detection device  A FPGA produces logic control signals for the whole system  the small displacement is converted to differential voltages  which is made by Hamamatsu in Japan  and after amplification and A/D transformation  8-bit parallel data is send to singlechip from FPGA by external interrupts  and the final calculation results output to the LCD display module. After digital micro meter calibration  we get the small thickness. Experiments show that the detection accuracy of the system is not less than 10um.   High precision test method for dynamic imaging of space camera (EI CONFERENCE) 会议论文 2010 IEEE International Conference on Advanced Computer Control, ICACC 2010, March 27, 2010 - March 29, 2010, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States Zheng G.-F.; Ma S.-F.; Sun J.-G.; Jin L.-X.; Zhang K. 收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25 A test method for dynamic imaging of space TDICCD (Time Delay and Integration Charge Coupled Devices) camera was presented in this paper. The test method adopted the PLL (Phase Locked Loop) technology and CMAC (Cerebella Model Articulation Controller) friction compensation as control strategy. Furthermore  According to this method  a test system for dynamic imaging of space TDICCD camera was designed and implemented. The system simulated the movement of the ground objects relative to the space aerocraft  to validate the capability of image speed match and the dynamic imaging quality of TDICCD camera. The design adopted a precision turntable and a drift turntable to simulate the movement around the earth and the drift motion in different latitude due to the rotation of earth  of the aerocraft. The turntables were drived by permanent magnet torque motor which was powered by PWM (Pulse Width Modulation). The system adopted DSP (Digital Signal Processor) as the control core and reached a very high performance. The experimental results showed that the steady speed error was better than 0.01 % and the instantaneous speed error reached 0.0267%. The precision of the test system designed met the requirement for dynamic imaging of TDICCD camera. 2010 IEEE.   Design of video auto focusing based on image processing (EI CONFERENCE) 会议论文 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China Meng B.; Zhu M.; Cai C.-J. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 In order to realize the auto focusing technique based on digital image processing  a video image processing system is designed by using high-performance digital signal processor TMS320VC5509 as the core  field programmable gate array FPGA for preprocessing of image. At the same time  it is proposed to use vector norm sum of image gray gradient as evaluation functions of digital image. It has the characteristics of good unbiasedness  powerful unimodality  etc.  and can be applied to evaluation of defocusing. The hardware composition of the theory behind the auto focusing system  and the application of the evaluation function are discussed in details.   Position following control system for the dome based on TMS320F2812 (EI CONFERENCE) 会议论文 ICMIT 2005: Control Systems and Robotics, September 20, 2005 - September 23, 2005, Chongging, China Mi Y.; Zhao J.; Qiao Y. 收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25 A position following control system was discussed to synchronize the rotational position of the dome with that of the theodolite. There were two loops in the servo control system. Open loop control was for speed adjustment  while closed loop control was for position following control. The core controller of the servo control system adopted TMS320F2812 DSP (Digital Signal Processing) chip and an absolute type encoder was used as a position feedback unit. A converter DA8562 converted the digital angular position calculated in DSP to an analogy voltage to control the dome rotation through a series of devices such as frequency conversion actiyator  servomotor and gear case. The experimental results show that the system synchronous following error less than 2 at 0.1/s to 35/s.