Results 181 to 190 of about 27,886 (209)

Sensorless BLDC Control Method

2020 IEEE 26th International Symposium for Design and Technology in Electronic Packaging (SIITME), 2020
This paper proposes a new control method for BLDC motors using sensorless trapezoidal control capable of regenerative braking, designed to be used on low-power and moderate computational power microcontrollers. It exhibits good performance on systems where the load does not have abrupt changes over time and the requirements for efficiency are not very ...
A. Zirne, G. Barbulescu, M. Paunoiu, C. Pop, N. Codreanu, M. Enachescu   +5 more
openaire   +1 more source

Sensorless, online motor diagnostics

IEEE Computer Applications in Power, 1997
Early detection of abnormalities in electric motors helps to avoid expensive failures. Motor current signature analysis (MCSA) implemented in a computer-based motor monitor can contribute to such condition-based maintenance functions. Such a system may also detect an abnormality in the process as well as the motor.
G.B. Kliman, W.J. Premerlani, B. Yazici, R.A. Koegl, J. Mazereeuw   +4 more
openaire   +1 more source

Sensorless fourquadrant drives

1987 IEEE Power Electronics Specialists Conference, 1987
The 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
openaire   +1 more source

Sensorless Drive Control

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 ...
openaire   +1 more source

Sensorless-Oriented-Design of PM Motors

2007 IEEE Industry Applications Annual Meeting, 2007
This 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
openaire   +2 more sources

mTORC1 goes sensorless

Science Signaling, 2019
A metabolite of leucine regulates mTORC1 through acetylation of Raptor in certain cell types and tissues.
openaire   +1 more source

Sensorless induction motor drives

IEE Seminar on Advances in Induction Motor Control, 2000
The desirability of eliminating mechanical shaft sensors for induction motor drives has led many manufacturers to include sensorless vector drives to their product range. However, current generation sensorless drives are unable to exhibit the same performance as sensored vector drives, particularly at frequencies below a few Hz.
openaire   +1 more source

Fuzzy PI based speed sensorless speed control of position sensorless BLDC drive

IET Chennai Fourth International Conference on Sustainable Energy and Intelligent Systems (SEISCON 2013), 2013
The Sensorless control of permanent magnet brushless DC motor is presented in this paper. The development of advanced sensorless motor drive has been increases rapidly, because of their higher performance and reliability. The fuzzy PI controller is developed for controlling the speed and position of the PMBLDC motor drive.
R. Manikandan, R. Arulmoziyal, K.R. Priyadharsini   +2 more
openaire   +1 more source

Direct sensorless speed control of PM-motors-a simple and effective sensorless method

2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230), 2002
This paper presents a method for sensorless speed control of nonsalient permanent magnet synchronous motors (PMSM). Special attention is put on the startup and synchronization of the motor, which are crucial for good performance of the drive system. The method merges both estimation and control of speed into one combined algorithm.
M. Leksell, L. Harnefors, M. Jansson
openaire   +1 more source

Intelligent grinding: sensorless instabilities detection

IEEE Instrumentation and Measurement Magazine, 2006
This paper has given an intelligent approach to avoid centerless grinding process instabilities without the need for sensors. The model-based algorithm techniques detect the configurations and the conditions of the process under which instabilities appear.
R. Lizarralde, M. Montejo, D. Barrenetxea, J.I. Marquinez, I. Gallego   +4 more
openaire   +1 more source