Results 291 to 300 of about 2,155,111 (338)

A wide range PLL for 64X speed CD-ROMs & 10X speed DVD-ROMs

IEEE Transactions on Consumer Electronics, 2000
In this paper, we propose a wide range PLL (phase locked loop) for 64X speed CD-ROMs and 10X speed DVD-ROMs. In order to develop a PLL with a wide locking range we designed a dual loop scheme which consists of a frequency detection loop and phase detection loop.
null Jae Shin Lee, null Woo Kiang Jin, null Dong Myung Choi, null Bang-Wen Lee, null Suki Kim   +4 more
openaire   +1 more source

Design of an SRM Speed Control Strategy for a Wide Range of Operating Speeds

IEEE Transactions on Industrial Electronics, 2010
This paper presents a speed control strategy for a switched reluctance machine (SRM). Two control strategies are compared to select the most appropriate control that allows the SRM to operate in wide-speed-range operation. The proposed strategy is first designed to control the speed in discontinuous conduction mode and is then extended to operate in ...
Hannoun, Hala, Hilairet, Mickaël, Marchand, Claude   +2 more
openaire   +2 more sources

Digital wide range electronic speed governor on FPGA

2008 10th International Conference on Control, Automation, Robotics and Vision, 2008
The paper realizes a design of digital fuzzy adaptive tuning PID electronic governor. It is based on VHDL description and implemented on FPGA. The paper proposes to detect the speed with duty cycle calculation and use fuzzy-control rules to amend the PID parameters on line to achieve the fuzzy adaptive tuning PID control.
null Ning Xiao, null Kai Shuang, null Deguo Wang, null Guanmin Liu   +3 more
openaire   +1 more source

Wide-division-range high-speed fully programmable frequency divider

2008 Joint 6th International IEEE Northeast Workshop on Circuits and Systems and TAISA Conference, 2008
This paper presents the design and implementation of an all-programmable frequency divider with an ultra-wide division range for use in phase-locked loops. The proposed divider uses a fully modular architecture and dynamic logic - implemented in TSMC 0.18 mum - and can divide input frequencies up to 7.55 GHz by any ratio between 8 and 255 while ...
Sleiman Bou Sleiman, Jad G. Atallah, Saul Rodriguez, Ana Rusu, Mohammed Ismail   +4 more
openaire   +1 more source

Wide Speed Range Operation of Non-Salient PM Machines

IEEE Transactions on Energy Conversion, 2016
Non-salient permanent magnet machines are considered poor candidates for flux weakening operations due to their inherent low-inductance characteristics. In this paper, a two-pole 24-slot non-salient PM machine design is proposed that can utilize a winding switching technique to achieve wide speed range operation. A very wide speed range operation (from
Shahid Atiq, Thomas A. Lipo, Byung-Il Kwon   +2 more
openaire   +1 more source

High-Speed Wide-Range Fluorite Spectrograph*

Journal of the Optical Society of America, 1957
A plane-grating spectrograph using a movable calcium fluoride camera corrector lens has been designed and constructed. It can be used to cover a wavelength range from about 12 000 A to 1500 A. The dispersion is approximately 58 A/mm, in the first order.
openaire   +1 more source

High-Speed Avalanche Photodiodes With Wide Dynamic Range Performance

Journal of Lightwave Technology, 2019
In this work, we demonstrate a novel top-illuminated avalanche photodiode (APD) with high-speed and wide dynamic range performance for coherent lidar applications, which needs simultaneous processing of weak light reflections from the object and a strong optical local-oscillator (LO) signal at the receiving end.
Hao-Yi Zhao, null Naseem, Andrew H. Jones, Rui-Lin Chao, Zohauddin Ahmad, Joe C. Campbell, Jin-Wei Shi   +6 more
openaire   +1 more source

Wide Spectral Range InP-based Photodetectors with High Speed

Asia Communications and Photonics Conference 2015, 2015
A novel InP-based photodetector (PD) with high speed in 850 to 1550nm spectral range is proposed. Theoretical studies indicate that the bandwidth is 62.5GHz, 61.7GHz, and 60.3GHz respectively at 850nm, 1310nm, and 1550nm wavelength excitations.
Zheng Liu, Yongqing Huang, Jiarui Fei, Kai Liu, Xiaofeng Duan, Jun Wang, Qi Wang, Xiaomin Ren, Shiwei Cai   +8 more
openaire   +1 more source

An Improved Wide-Range Adjustable-Speed Drive [includes discussion]

Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1954
An adjustable-speed drive using a d-c series generator supplying a d-c series motor is described. This drive operates well at speeds under 10 rpm as well as at speeds limited only by mechanical considerations. The ratio of maximum to minimum speed, Fig. 4, is in the order of 100 to 1.
A. G. Conrad, A. R. Perrins, R. R. Shank
openaire   +1 more source

Wide speed-range following control for road autonomous vehicles

2011 International Conference on Consumer Electronics, Communications and Networks (CECNet), 2011
This paper is to design an autonomous cruise control module for autonomous vehicle following to maintain steering smoothness and a desired intervehicle spacing from highway to nonhighway environments. We reasonably simplify the nonlinear kinematical module to linear time-varying module by combining optimal control on lateral side with classic ...
Zilong Liu, Wenbo Chen, Yanxia Jiang
openaire   +1 more source