机构

• 长春光学精密机械与物... [2]
• 南京天文光学技术研究... [1]

采集方式

• OAI收割 [3]

内容类型

• 会议论文 [3]

发表日期

• 2014 [1]
• 2011 [2]

学科主题

• 天文技术与方法::自... [1]
• 天文望远镜::南极望... [1]

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择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作者升序作者降序 Analysis, testing and control of telescope’s high-precision drive system in low-temperature environment 会议论文  OAI收割 Montréal, Quebec, Canada, 2014-6-22 作者:  DU Fu-Jia;  WEN Hai-Kun;  ZHANG Jian 收藏  |  浏览/下载：34/0  |  提交时间：2015/03/12 Low temperature environment  Lubricating  Precision driving  Friction feedforward   Design of motion adjusting system for space camera based on ultrasonic motor (EI CONFERENCE) 会议论文  OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China 作者:  Sun Z. 收藏  |  浏览/下载：92/0  |  提交时间：2013/03/25 Drift angle is a transverse intersection angle of vector of image motion of the space camera. Adjusting the angle could reduce the influence on image quality. Ultrasonic motor (USM) is a new type of actuator using ultrasonic wave stimulated by piezoelectric ceramics. They have many advantages in comparison with conventional electromagnetic motors. In this paper  some improvement was designed for control system of drift adjusting mechanism. Based on ultrasonic motor T-60 was designed the drift adjusting system  which is composed of the drift adjusting mechanical frame  the ultrasonic motor  the driver of Ultrasonic Motor  the photoelectric encoder and the drift adjusting controller. The TMS320F28335 DSP was adopted as the calculation and control processor  photoelectric encoder was used as sensor of position closed loop system and the voltage driving circuit designed as generator of ultrasonic wave. It was built the mathematic model of drive circuit of the ultrasonic motor T-60 using matlab modules. In order to verify the validity of the drift adjusting system  was introduced the source of the disturbance  and made simulation analysis. It designed the control systems of motor drive for drift adjusting system with the improved PID control. The drift angle adjusting system has such advantages as the small space  simple configuration  high position control precision  fine repeatability  self locking property and low powers. It showed that the system could accomplish the mission of drift angle adjusting excellent. 2011 SPIE.   Combustion characteristics of test and reserch on electronic control fuel injection system of cars GDI engine (EI CONFERENCE) 会议论文  OAI收割 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China Zhao X.; Xiong W. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 A cars GDI engine electronic control fuel injection system has been developed for a GDI engine based on analysing the work principles of the control system of the engine in detail in this paper. The MCU produced by Freescale was chosen as the main controller of ECU(Electronic Control System) at the beginning  then the fuel injection driving circuit module was designed  fuel injection module programme was designed.The control system for different load and speed achieved flexible control  precision  flexible  fast response  which was proved by the engine test. This control system was proved to be ensure capability and performance of fuel injection demands. 2011 IEEE.