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Description: Direct Back EMF Detection Method for Sensorless Brushless DC
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Size: 714752 |
Author: elijj56 |
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Description: FIXME: is 1 the correct value for GDIP_EMFPLUSFLAGS_DISPLAY? This number has been determined by calling Metafile::GetMetafileHeader() on a EMF+ metafile which was recorded on a display device context (SampleMetafile.emf).
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Size: 2048 |
Author: lxbbty |
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Description: This Paper mainly deals with the implementation of vector control technique using the brushless DC motor
(BLDC). Generally tachogenerators, resolvers or incremental encoders are used to detect the speed. These
sensors require careful mounting and alignment, and special attention is required with electrical noises. A
speed sensor need additional space for mounting and maintenance and hence increases the cost and size of
the drive system. These problems are eliminated by speed sensor less vector control by using Extended
Kalman Filter and Back EMF method for position sensing. By using the EKF method and Back EMF
method, the sensor less vector control of BLDC is implemented and its simulation using
MATLAB/SIMULINK and hardware kit is implemented.
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Size: 484352 |
Author: matija |
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Description: Abstract—This paper presents a new 12-step sensorless drive for
brushless dcmotor based on back-electromotive force (back-EMF)
differences, which are estimated the disturbance observer
(DOB) structure. Availability of rotor position information with
a resolution of 30° and commutation without phase shift are the
advantages of using the back-EMF differences. Unlike the conventional
methods that obtain part of the back-EMF signal the
manipulation of three phase voltages, the proposed DOB structure
can access the entire back-EMF profile. By designing a proper
low-pass filter in the DOB structure, the back-EMF difference can
be well detected with lower sensor noise. Compensation of delay
commutation introduced by the filter is also discussed. Experiment
results showed that the proposed sensorless drive is capable of running
themotor in lower speed, and performs better under different
speed and load torque as compared with the conventional method.-Abstract—This paper presents a new 12-step sensorless drive for
brushless dcmotor based on back-electromotive force (back-EMF)
differences, which are estimated the disturbance observer
(DOB) structure. Availability of rotor position information with
a resolution of 30° and commutation without phase shift are the
advantages of using the back-EMF differences. Unlike the conventional
methods that obtain part of the back-EMF signal the
manipulation of three phase voltages, the proposed DOB structure
can access the entire back-EMF profile. By designing a proper
low-pass filter in the DOB structure, the back-EMF difference can
be well detected with lower sensor noise. Compensation of delay
commutation introduced by the filter is also discussed. Experiment
results showed that the proposed sensorless drive is capable of running
themotor in lower speed, and performs better under different
speed and load torque as compared with the conventional method.
Platform: |
Size: 790528 |
Author: Maddy |
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Description: 无刷直流电机模型，matlab仿真，以及转矩，转速，电压电流的测量-
Brushless DC motor model
xiehouxunlunwen.mdlmatlab simulation
invertvoltage.m
itest.m
emf
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Size: 105472 |
Author: 青蛙 |
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Description: 仿真了电磁波（电磁场）在自由空间中的传播情况，并自动生成视频，对于初学者帮助很大，完全是本人编写的小程序。-Simulation of electromagnetic (EMF) in free space propagation conditions, and automatically generate video, very helpful for beginners, completely write small programs.
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Size: 1024 |
Author: 孙小凡 |
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Description: 利用GEF和EMF实现了图形编辑器框架，可进行图形的添加，删除与修改。-Use EMF and GEF implement graphical editor framework, you can add graphics, delete and modify.
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Size: 123904 |
Author: 张海丽 |
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Description: Eclipse-程序界面美化技术 -Eclipse- beautification program interface technologyEclipse- beautification program interface technology
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Size: 21649408 |
Author: fujun |
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Description: 求多次谐波，特别适用于分数槽电机反电势谐波分析-For multiple harmonics, especially suitable for fractional slot motor back emf harmonic analysis
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Size: 1024 |
Author: mengzi |
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Description: This circuit uses the AC7 block of SimPowerSystems™ library. It models a brushless DC motor drive with a braking chopper for a 3HP motor.The permanent magnet synchronous motor (with trapezoidal back-EMF) is fed by a PWM voltage source inverter, which is built using a Universal Bridge Block. The speed control loop uses a PI regulator to produce the torque reference for the current control block. The current control block computes the three reference motor line currents, in phase with the back electromotive forces, corresponding to the torque reference and then feeds the motor with these currents using a three- phase current regulator.Motor current, speed, and torque signals are available at the output of the block.-This circuit uses the AC7 block of SimPowerSystems™ library. It models a brushless DC motor drive with a braking chopper for a 3HP motor.The permanent magnet synchronous motor (with trapezoidal back-EMF) is fed by a PWM voltage source inverter, which is built using a Universal Bridge Block. The speed control loop uses a PI regulator to produce the torque reference for the current control block. The current control block computes the three reference motor line currents, in phase with the back electromotive forces, corresponding to the torque reference and then feeds the motor with these currents using a three- phase current regulator.Motor current, speed, and torque signals are available at the output of the block.
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Size: 20480 |
Author: Gwynble1dd |
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Description: 电磁场圣经，林为干院士的书,学习电磁场重要材料-EMF Bible, it' s dry academician of the book, an important material for studying the electromagnetic field
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Size: 11388928 |
Author: 姜山 |
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Description: windows 平台下的虚拟打印机驱动程序。-Omega48 is a virtual printer driver for Microsoft Windows which allows you to convert the document to the graphics formats such as EMF, BMP and non formated text file (UNICODE or ANSI). Omega48 allows to save MS Windows Spool (SPL) and Shadow (SHD) files
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Size: 173056 |
Author: asdf |
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Description: 打印机生成的SPL中间文件，转换成EMF图像文件-SPL printer generated intermediate file, convert EMF image files
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Size: 4091904 |
Author: JHON |
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Description: FlexGraphics - is a set of components for creating vector graphics applications under Borland Delphi/C++Builder. The library s implementation is based on Windows GDI and supports the following graphical objects:
line
box (including the rounded box)
circle (ellipse)
poly-line
polygon
curve
text (including multi-line text)
bitmap raster image (WMF, BMP, ICO, JPG, JPEG, GIF, EMF).
Note:
There is one tool for line, poly-line, polygon objects (holding a modifier button pressed will allow conversion of lines to poly-lines or polygons and vice versa). -FlexGraphics - is a set of components for creating vector graphics applications under Borland Delphi/C++Builder. The library s implementation is based on Windows GDI and supports the following graphical objects:
line
box (including the rounded box)
circle (ellipse)
poly-line
polygon
curve
text (including multi-line text)
bitmap raster image (WMF, BMP, ICO, JPG, JPEG, GIF, EMF).
Note:
There is one tool for line, poly-line, polygon objects (holding a modifier button pressed will allow conversion of lines to poly-lines or polygons and vice versa).
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Size: 1348608 |
Author: execexec |
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Description: 基于STM8的无刷直流电机方波控制程序；带霍尔传感器；反电动势检测-Brushless DC motor control based on hall position sensor HALL SENSOR position detection based on back-emf
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Size: 610304 |
Author: wu yong |
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Description: a rapport of 2nd year of master in telecommunication system.working with EMF and GMF eclipse and DDS Data Distributed System
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Size: 1346560 |
Author: meriem |
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Description: a power point presentation presenting how to impliment EMF and GMF with DDS
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Size: 4529152 |
Author: meriem |
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Description: 查看EMF文件的工具，可以预览和打印，超级方便。-EMF file viewer, preview and print.
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Size: 318464 |
Author: senixdl |
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Description: linux下emf图片处理库，实现了windows下的绘图api接口-Linux emf image processing library, the realization of the Windows API mapping interface
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Size: 10365952 |
Author: 翟强 |
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Description: I want to be member EMF Spool File
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Size: 231424 |
Author: Loan |
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