中国科学院机构知识库网格系统: 检索

DSP implementation of a neural network vector controller for IPM motor drives 期刊论文 OAI收割
Energies, 2019, 卷号: 12, 期号: 13, 页码: 1-17
作者: Ramezani, Malek; Bian J(卞晶); Sun, Yang; Balasubramanian, Bharat; Gao, Yixiang

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收藏 | 浏览/下载：75/0 | 提交时间：2019/08/04

permanent-magnet synchronous motor (PMSM) vector control approximate dynamic programming (ADP) artificial neural network (ANN) digital signal processor (DSP) implementation real-time control linear and over-modulation

油井井下工具供电及电机控制系统研究 学位论文 OAI收割
工程硕士, 中国科学院自动化研究所: 中国科学院研究生院, 2012
张新超

收藏 | 浏览/下载：141/0 | 提交时间：2015/09/02

随钻测量无刷直流电机电源控制数字信号处理器模糊控制 Measurement while drilling Brushless DC motor Power control Digital signal processor Fuzzy control

High precision test method for dynamic imaging of space camera (EI CONFERENCE) 会议论文 OAI收割
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
作者: Jin L.-X.; Zhang K.; Zhang K.; Zhang K.; Zhang K.

收藏 | 浏览/下载：26/0 | 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.

Embedded system of time uniform based on DSP (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者: Li N.; Liu C.-X.; Liu C.-X.; Chen J.; Guo L.-H.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

We introduced a design method of DSP-based System of time uniform which combine the GPS and the Compass to calibrate the time. The system can use UTC (Coordinated Universal Time) of the GPS or the Compass for time base to generate absolute time and different frequency of synchronous signals. We used DSP (Digital Signal Processor) to calculate the satellite information which includes the UTC time. After getting the UCT time information put it into the CPLD (Complex Programmable Logic Device) for correction of time delay and serialization to output. Meanwhile we divided 1PPS (one-pulse-per-second) signal of the GPS and the Compass into 20Hz 50Hz and 800Hz synchronous signal. And we analyzed the precision of time and frequency. To conclude the uncertainty of system absolute time is less than 100ns the uncertainty of system synchronous signals is less than 20ns. This system is easy and flexible for use stable and reliable in performance. 2010 IEEE.

Phase-laser ranging system based on digital signal processing for optoelectronics theodolite application (EI CONFERENCE) 会议论文 OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
作者: Liu Y.-S.

收藏 | 浏览/下载：40/0 | 提交时间：2013/03/25

In order to meet requirement of high accurate ranging the laser ranging system is designed for optoelectronics theodolite application by this paper based on digital signal processing. Variable modulating method is used to solve the antinomy between the measuring range and accuracy. Frequency mixing is adopted to reduce the frequency of the signal which can lower the requirement for hardware. The high ranging accuracy is achieved by way of Fast Fourior Transform (FFT) using digital signal processor and error correcting factor. Experiment results indicate that using digital signal processing method can reduce the influence of surroundings and hardware system and obtain high ranging accuracy. 2010 IEEE.

Signal integrity simulation design of image processor PCB combined with electromagnetic compatibility analyses based on altium designer 6 (EI CONFERENCE) 会议论文 OAI收割
2009 4th IEEE Conference on Industrial Electronics and Applications, ICIEA 2009, May 25, 2009 - May 27, 2009, Xi'an, China
Cheng Y. Q.; Zhu M.; Ge W.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

With the coming of the high-speed digital system age signal integrity (SI) and electromagnetic compatibility (EMC) should not be ignored any more. In this paper based on basic theories of SI and EMC the high-speed digital design method for PCB using the SI simulation tool of Altium Designer 6 and EMC analyses is introduced and the impedance control power integrity (PI) design and SI (reflections and crosstalk) design of a piece of image processor PCB are demonstrated in detail. The simulation results show that the impedance control is perfect reasonable termination can improve the waveforms and control the reflections and crosstalk. 2009 IEEE.

Space camera imaging gain in-orbit adjusting strategy (EI CONFERENCE) 会议论文 OAI收割
2009 2nd International Conference on Intelligent Computing Technology and Automation, ICICTA 2009, October 10, 2009 - October 11, 2009, Changsha, Hunan, China
作者: Wang J.; He X.

收藏 | 浏览/下载：17/0 | 提交时间：2013/03/25

A Multi-Step Gain Adjusting Strategy (MSGAS) of space camera was proposed which was used to get higher SNR (Signal-Noise Rate) image. When the space camera working in poor light condition the CCD signal was so weak that it's difficult to get a clear image to reduce the quantization noise and improve the SNR we must amplify the CCD signal first and then quantize. The MSGAS was achieved by adjusting the gain of the CCD (Charge Couple Device) signal processor step by step the upper limit and lower limit were set if the MDN (Mean Digital Number) of a fixed length image data was not between the lower and upper limit the gain was adjusted step by step. In the experiment the upper limit lower limit and the step were set and the result of the experiment showed that MSGAS was robust and SNR was improved from 28 to 39. 2009 IEEE.

The Study on Servo-Control System in the Large Aperture Telescope 会议论文 OAI收割
Marseille, France, 2008-6-23
作者: Daxing Wang; Zhenchao Zhang; Wei Hu

收藏 | 浏览/下载：31/0 | 提交时间：2014/01/02

Large Aperture Telescope Digital Signal Processor (DSP) Module Direct Torque Control(DTC) Permanent Magnet Synchronous Machine(PMSM) Intelligent Power Modules (IPM)

A family of n-scroll hyperchaotic attractors and their realization 期刊论文 OAI收割
PHYSICS LETTERS A, 2007, 卷号: 364, 期号: 3-4, 页码: 244-251
作者: Yu, Simin; Lu, Jinhu; Chen, Guanrong

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收藏 | 浏览/下载：18/0 | 提交时间：2018/07/30

hyperchaos multi-scroll attractors analog circuit digital signal processor

Real-time quality control on a smart camera (EI CONFERENCE) 会议论文 OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
Xiao C.; Zhou H.; Li G.; Hao Z.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

A smart camera is composed of a video sensing high-level video processing communication and other affiliations within a single device. Such cameras are very important devices in quality control systems. This paper presents a prototyping development of a smart camera for quality control. The smart camera is divided to four parts: a CMOS sensor a digital signal processor (DSP) a CPLD and a display device. In order to improving the processing speed low-level and high-level video processing algorithms are discussed to the embedded DSP-based platforms. The algorithms can quickly and automatic detect productions' quality defaults. All algorithms are tested under a Matlab-based prototyping implementation and migrated to the smart camera. The smart camera prototype automatic processes the video data and streams the results of the video data to the display devices and control devices. Control signals are send to produce-line to adjust the producing state within the required real-time constrains.