搜索结果: 1-15 共查到“工学 Synchronous”相关记录24条 . 查询时间(0.13 秒)
CO-REGISTRATION AIRBORNE LIDAR POINT CLOUD DATA AND SYNCHRONOUS DIGITAL IMAGE REGISTRATION BASED ON COMBINED ADJUSTMENT
Airborne LiDAR Point Cloud Data synchronous digital image co-registration combined adjustment
2016/7/4
Aim at the problem of co-registration airborne laser point cloud data with the synchronous digital image, this paper proposed a registration method based on combined adjustment. By integrating tie poi...
COMBINING SYNCHRONOUS AND ASYNCHRONOUS ELEARNING TOOLS IN DISTANCE EDUCATION–EXPERIENCES FROM A COURSE FOR DEVELOPING COUNTRIES
distance learning synchronous learning asynchronous learning Elluminate developing countries spatial decision support system distance education
2016/1/29
Distance learning requires a specific effort of addressing the students: Students motivation has to be kept up high throughout the course via interesting and diversified teaching material and methods....
SISAR:A RIGOROUS ORIENTATION MODEL FOR SYNCHRONOUS AND ASYNCHRONOUS PUSHBROOM SENSORS IMAGERY
Pushbroom sensors imagery orientation rigorous models software
2015/9/17
The correct georeferencing of remote sensing imagery is a fundamental task in the photogrammetric processing for orthoimages,DEM/DSM generation and 3D features extraction. In this paper we focus on th...
CROSS-CALIBRATION OF IRS-1C, -1D AND -P6: WIDE ANGLE SENSORS USING SYNCHRONOUS OR NEAR SYNCHRONOUS MATCHING SCENES
Inter-sensor calibration Relative spectral response Top-of-Atmosphere radiance
2015/8/28
For many applications (e.g., disaster management, precision farming), it is required to monitor events using multi-date satellite
imagery acquired over the same area. This requirement can be best met...
Optimizing Output Power of a Variable Speed Synchronous Generator by Controlling Excitation and Load Restistance
Output Power Variable Speed Synchronous Generator Controlling Excitation Load Resistance
2014/11/4
Since 1973 the University of Massachusetts Energy Alternatives Program has been involved in a project, the UMASS Wind Furnace (WF-1) which is directed at supplying the heating needs of households in n...
Synchronous Trigger Detection for Pulse Laser Readout on Super Resolution Erasable Optical Disks
pulse readout synchronous detection erasable optical disks thermal super resolution disks magneto-optical super resolution center aperture detection disk
2011/11/30
The laser pulse readout scheme is advantageous in reading thermal super resolution disks, but the light modulation on the RF signal confuses the detection channel. A synchronous trigger detection sche...
World-First Experimental Demonstration of Synchronous Clock Recovery in an 11.25Gb/s Real-Time End-to-End Optical OFDM System Using Directly Modulated DFBs
Synchronous Clock Recovery Real-Time End-to-End Optical OFDM System Directly Modulated DFBs
2015/5/20
A simple, highly-effective, DSP-free, optical OFDM(OOFDM) synchronous clock recovery technique preserving system performance and enhancing stability is proposed and experimentally demonstrated, for th...
A Novel Synchronous Coherent Optical Receiving Technique without Active Phase Tracking
Receiving Technique Phase Tracking Novel Synchronous Coherent
2015/5/18
A novel synchronous coherent optical receiving technique is proposed. With this technique, active phase tracking with an optical phase locked loop is eliminated by canceling out the phase and frequenc...
Detection of static eccentricity for permanent magnet synchronous motors using the coherence analysis
Permanent magnet synchronous motor eccentricity fault diagnosis spectral analysis
2010/11/22
This paper reports on work to detect the static eccentricity faults for permanent magnet synchronous motor (PMSM) using spectral analysis methods. Measurements are carried out by collecting the stator...
Artificial Sun synchronous frozen orbit control scheme design based on J2 perturbation
ontinuous low-thrust Artificial Sun synchronous orbit Artificial frozen orbit Gauss’ variation of parameters equations Mean element method
2012/2/29
Sun synchronous orbit and frozen orbit formed due to $J_{2}$ perturbation have very strict constraints on orbital parameters, which have restricted the application a lot. In this paper, several contro...
基于同步整流的光伏水泵数字控制器（Digital Controller for PV Pumping Based on Synchronous Rectification）
光伏水泵 无刷直流电动机 同步整流
2009/11/24
根据光伏水泵无刷直流电动机驱动实际需要，提出一种数字控制器解决方案。为降低控制器续流损耗，基于同步整流技术采用MOSFET代替体二极管续流，并可降低控制器温升，提高系统可靠性。研究了改进的无差拍控制策略，采用自适应无轨迹卡尔曼滤波方法(Adaptive UKF)在线辨识、修正系统参数，以改善力矩电流控制效果。仿真和实验结果表明，该方案易于数字实现，参数辨识有效，电流控制精度高，提高了系统运行性能。
Comparative Simulation Study on Synchronous Generators Sudden Short Circuits
Comparative Simulation Synchronous Generators Sudden Short Circuits
2009/9/4
Although of a great extent in time, the research works directed at studying transients in synchronous generators have not yet provided fully sufficient comparative studies in respect to sudden short c...
A New Relaying Algorithm to Detect Loss of Excitation of Synchronous Generators
Digital relaying generator protection reactive power
2009/7/28
A new digital relaying algorithm is introduced for the protection of synchronous generators against loss of excitation conditions. The new algorithm is based on measuring of the 3-phase reactive power...
A PI Controller Based on Gain-Scheduling for Synchronous Generator
Gain-Scheduling PI Controller Single machine infinite bus Conventional AVR
2009/7/28
In this paper a gain- scheduling scheme of a proportional integral (GSPI) controller is proposed for a synchronous generator. In presented scheme, both proportional and integral gains are allowed to v...
Active Clamped ZVS Forward Converter With Soft-Switched Synchronous Rectifier
DC-DC converter forward converter active clamp
2009/7/28
This paper presents the analysis, design and implementation of an active-clamped, ZVS forward converter equipped with a soft-switched synchronous rectifier (ACFC-SR) proposed for high-efficiency, low ...