Results 141 to 150 of about 2,273 (186)
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Sensorless-Oriented-Design of PM Motors
2007 IEEE Industry Applications Annual Meeting, 2007This paper deals with the design of a permanent-magnet (PM) motor for zero-speed sensorless rotor position detection, by means of injection of a high-frequency signal. Various aspects are investigated: influence of the rotor structure, stator and rotor saturation, reliability of finite-element analysis to predict the motor performance, and influence of
BIANCHI, NICOLA, BOLOGNANI, SILVERIO
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IFAC Proceedings Volumes, 1989
Abstract The digital control of electrical drives by microprocessors requires special control concepts which are formed for digital signal processing. By implementing the well-known control strategies in the frequency domain and in the state space there are always two fundamental disadvantages; first the nonlinearities of a drive system cannot be ...
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Abstract The digital control of electrical drives by microprocessors requires special control concepts which are formed for digital signal processing. By implementing the well-known control strategies in the frequency domain and in the state space there are always two fundamental disadvantages; first the nonlinearities of a drive system cannot be ...
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Research of sensorless controller of BLDC motor
IEEE 10th International Conference on Industrial Informatics, 2012Sensorless control technology has been a hotspot in the area of BLDCM control. In this paper, a speed controller of BLDCM based on MC56F8013 was researched using BEMF-crossing-zero-detecting method, including hardware circuit and software design. Experiments were implemented and it shows that the BEMF method for detecting rotor position signal is ...
Yuanlou Gao, Yongliang Liu
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A sensorless passivity-based control for PMSM
2018 International Conference on Electronics, Communications and Computers (CONIELECOMP), 2018This paper presents a sensorless controller design to speed tracking problem for a Permanent Magnet Synchronous Motor (PMSM). The technique of passivity requires knowing the load torque, this is estimated with a reduced-order extended state observer, a traditional reduced-order observer and an online algebraic estimator.
Jacob Javier Vasquez Sanjuan +3 more
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Sensorless control of the suspension preload in motorcycles
2008 IEEE International Symposium on Industrial Electronics, 2008This paper describes the sensorless control of a motorcycle suspension preload. The aim of the system is to make the suspension work around its optimal operating point, making the vehicle height independent of the load carried. This improves the safety and comfort of the vehicle.
BARONTI, FEDERICO +3 more
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Wireless and sensorless 3D ultrasound imaging
Neurocomputing, 2016The past decade has witnessed great advances in three-dimensional (3-D) medical ultrasound (US) imaging instrumentation. An increasing demand for portable 3-D US equipment is one of the main trends upcoming in the market. In this study, we developed a low cost, portable, sensorless and wireless 3-D US imaging system.
Haitao Gao +3 more
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Sensorless fault diagnosis of induction motors
IEEE Transactions on Industrial Electronics, 2003Early detection and diagnosis of incipient faults is desirable for online condition assessment, product quality assurance, and improved operational efficiency of induction motors. In this paper, a speed-sensorless fault diagnosis system is developed for induction motors, using recurrent dynamic neural networks and multiresolution or Fourier-based ...
Kyusung Kim +2 more
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SMA sensorless actuators for micrometric control
2009 European Control Conference (ECC), 2009The ability of SMAs to respond reversibly to an external stimulus by modifying their dimensions can be used to generate motion or force in electromechanical devices and micro-machines. There are several works that demonstrate SMAs are serious alternatives as micrometric actuators, obtaining accuracies around 3 µm in position control if high-quality ...
Estibaliz Asua +3 more
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Sensorless fourquadrant drives
1987 IEEE Power Electronics Specialists Conference, 1987The development of automated systems requires more and more electrical drives which have a variable speed. Thereby economical aspects are as important as a good dynamical behaviour. In contrast to conventional controlled converter drives the presented control strategy encreases the economy and the safety in operation as sensors for current, voltage and
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On sensorless control of a class of electrical machines
Proceedings of the 41st IEEE Conference on Decision and Control, 2002., 2004The problem of sensorless (local) speed regulation of a class of electrical machines is addressed and solved using a simple linear-time varying controller. The class, which contains permanent magnet synchronous and stepper motors, consists of all fully actuated machines whose magneto motive force can be approximated by a first harmonic Fourier ...
Alessandro Astolfi +2 more
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