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Fuzzy Self-adapting PID Control of PMSM Servo System
Abstract
The parameters of PID controller are needed to adjust on-line to satisfy the high performance requirement, because the external disturbance to PMSM servo system is random and the controlled object often varies with the work con***ion variation. The PMSM servo system is nonlinear, time-varying, and complex system. The tra***ional self adapting control is very difficult to realize. which need the on-line identification to the system characteristic parameters and the real-time change of control strategy. A new fuzzy self-adapting PID control method is proposed in this paper, which synthesizes the merits of fuzzy control and PID control. Using fuzzy inferences method, the PID parameters can be adjusted adaptively on-line for the varying state of the system. For the PMSM speed adjustment system, the vector control is used in current loop and fuzzy self-adjusting PID control is used in speed loop instead of tra***ional PI control. The effectiveness of the proposed control method is verified by simulation based on Matlab. The controller has better performance and robustness than conventional PI controller in the PMSM servo system.
link: http://ieeexplore.ieee.org/search/freesrchabstract.jsp?arnumber=4270754&isnumber=4270600&punumber=4270599&k2dockey=4270754@ieeecnfs&query=(pmsm+servo)%3Cin%3Emetadata&pos=1
An approach to torque ripple compensation for high performance PMSM servo system
Abstract
An adaptive load torque observer is presented to compensate the torque ripple in PMSM servo system. A simple adaptive scheme is derived using Popov''''''''''''''''s hyperstability theory. The torque ripple detected by the observer is compensated by a feed forwarding equivalent current which gives fast response. The noisy current information is exempt from the observer to avoid its deterioration of the quality of the observer. The speed measurement delay is considered by using observed speed since the instantaneous velocity can''''''''''''''''t be estimated precisely at low speed because of too few positional pulses from the absolute encoder during one time interval. Simulation and experimental results demonstrate that the proposed method can improve the dynamic performance of PMSM servo system satisfyingly.
link: http://ieeexplore.ieee.org/search/freesrchabstract.jsp?arnumber=1355050&isnumber=29762&punumber=9371&k2dockey=1355050@ieeecnfs&query=(pmsm+servo)%3Cin%3Emetadata&pos=3
Development and Implementation of AC Servo Motion System
Abstract
After reviewing the development of servo motor in China, the concept of ac servo motion system is put forward and introduced in this paper. Then the control structure of ac servo motion system is divided and compared. In order to speed up the development of sinusoidal-current-excited xcited permanent magnetic synchronous otor (PMSM) servo system, the technology routine suitable to China is explored and the research emphasises are presented. Finally a design example of PMSM servo motion system is given.
link: http://ieeexplore.ieee.org/search/freesrchabstract.jsp?arnumber=1638051&isnumber=33303&punumber=10523&k2dockey=1638051@ieeecnfs&query=(pmsm+servo)%3Cin%3Emetadata&pos=10
Fully digital implementation of PMSM servo based on a novel current control strategy
Abstract
A novel current control strategy for use in fully digital control of permanent magnet synchronous motor (PMSM) servo drive systems is presented. This digital current control strategy is based on information about three-phase current errors. There is no need to know precise motor parameters. It also requires no complex calculation such as motor counter EMF calculations. The sequence of output voltage vectors can be selected intelligently so that the number of switching is significantly minimized. The practical servomotor drive system adopting this current controller is designed with an Intel 87C196KC as its control core part and with a third generation intelligent power module (IPM) as power switches of the inverter. Simulation and experimental results show that the practical system has satisfactory static and dynamic performance
link: http://ieeexplore.ieee.org/search/freesrchabstract.jsp?arnumber=645599&isnumber=14041&punumber=5036&k2dockey=645599@ieeecnfs&query=(pmsm+servo)%3Cin%3Emetadata&pos=11
High-resolution absolute position Vernier shaft encoder suitable for high-performance PMSM servo drives
Abstract
Permanent magnet synchronous motor (PMSM) drives are suitable for high-performance servo applications, as in robotics. This, however, requires an accurate position feedback, which is not possible with the existing absolute position encoders, unless one is prepared to compromise on the size of the encoder. This paper proposes a new encoding scheme based on the simple Vernier principle. The proposed scheme improves the resolution of the encoder within limited disk diameter. An improved encoder based on the same principle is also presented with minor modifications to improve the resolution. Computer simulations and experimental work have shown that a suitable modification of the Vernier concept can result in an encoder that is superior to the existing ones. Details of this work are presented.
link: http://ieeexplore.ieee.org/search/freesrchabstract.jsp?arnumber=1583901&isnumber=33429&punumber=19&k2dockey=1583901@ieeejrns&query=(pmsm+servo)%3Cin%3Emetadata&pos=15
Design and Experimental Results of a Brushless AC Servo Drive
Abstract
High-quality electrical servo drives can only be designed and manufactured by using especially compatible and sophisticated components. A typical control actuator system is described consisting of a brushless synchronous motor and a transistor chopper inverter. Important aspects of the design and rating of a three-phase motor with rare-earth permanent magnets are pointed out. Several types of construction are described. The machine control system used is the familiar method of cascade control. By application of "space vectors" two special methods for fast response current control are developed. In the first case, inverter control signals are derived only from measured quantities. In the second case, the optimum controller output can be calculated if ad***ional information about the controlled system exists. Finally, experimental results prove the excellent performance of this drive system.
link: http://ieeexplore.ieee.org/search/freesrchabstract.jsp?arnumber=4504491&isnumber=4504475&punumber=28&k2dockey=4504491@ieeejrns&query=(ac+servo)%3Cin%3Emetadata&pos=22
Study of PMSM Digital Servo System Based on DSP and CPLD
Abstract
According to the characteristic of permanent magnet synchronous motor (PMSM), this paper realized the simulation of its servo system based on the power system toolbox of MATLAB/SIMULINK. Then this paper proposed a full-digital PMSM servo system based on digital signal processor (DSP) and complex programmable logical device (CPLD), which includes testing modules for phase current, rotor position and rotor speed, and modulation of trigger pulse. Based on the field-oriented control method, the PMSM speed adjustment through DSP C language was realized. The result indicates that, this system has prompt dynamic response and well steady-state behavior.
link: http://ieeexplore.ieee.org/search/freesrchabstract.jsp?arnumber=1575042&isnumber=33303&punumber=10523&k2dockey=1575042@ieeecnfs&query=(pmsm+servo)%3Cin%3Emetadata&pos=5
Được tivoidethuong sửa chữa / chuyển vào 23:34 ngày 18/07/2008

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Admission control in frequency hopping GSM systems
Beming, P. Frodigh, M.
Ericsson Radio Syst. AB, Stockholm;
This paper appears in: Vehicular Technology Conference, 1997 IEEE 47th
Publication Date: 4-7 May 1997
Volume: 2, On page(s): 1282-1286 vol.2
Meeting Date: 05/04/1997 - 05/07/1997
Location: Phoenix, AZ, USA
ISBN: 0-7803-3659-3
References Cited: 6
INSPEC Accession Number: 5773419
Digital Object Identifier: 10.1109/VETEC.1997.600538
Date Published in Issue: 2002-08-06 21:32:19.0

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Cám ơn bác docat rất nhiều. E nhận được hàng rồi.

Minh muon nho ban down giup minh file nay voi:
1. Market Operations in Electric Power Systems : Forecasting, Scheduling, and Risk Management
Shahidehpour, M. Yamin, H. Li, Z.
Publication Date: April 2002
Wiley-IEEE Press
Number of Pages: 552
E***ion: 1
Thanks nhieu!

Ặc ặc, cái này là ebook mà, đâu phải bài báo
Với mấy tài liệu dạng này thì chịu khó dùng Google đi. Search 1 phát là ra ngay cuốn này mà:
http://rapidshare.com/files/69852574/Market.Operations.in.Electric.Power.Systems.-.-Forecasting_.Scheduling._.Risk.Management.rar
P/S: bạn là sinh viên à? Sao nghiên cứu về cái món thị trường điện này?

nhận được hàg gòi, thanks docat lần nữa