Results 61 to 70 of about 1,673 (168)
Randomly pivoted Cholesky: Practical approximation of a kernel matrix with few entry evaluations
Communications on Pure and Applied Mathematics, Volume 78, Issue 5, Page 995-1041, May 2025.Abstract The randomly pivoted Cholesky algorithm (RPCholesky) computes a factorized rank‐k$k$ approximation of an N×N$N \times N$ positive‐semidefinite (psd) matrix. RPCholesky requires only (k+1)N$(k + 1)N$ entry evaluations and O(k2N)$\mathcal {O}(k^2 N)$ additional arithmetic operations, and it can be implemented with just a few lines of code.
Yifan Chen +3 more
wiley +1 more source
Slip Estimated Sensorless Vector Controller [PDF]
The Journal of the Korean Institute of Information and Communication Engineering, 2010 A sensorless vector control of an induction motor provides a good performance in the middle and high speed region. However, in the low speed region, it is very difficult to implement the sensorless vector controller because the feeding voltage measured by the motor is very low. In this paper, we designed the sensorless vector controller of an induction
openaire +1 more source
Engineering Reports, Volume 7, Issue 4, April 2025.Study on harmonic suppression method of permanent magnet synchronous motor in high voltage wire inspection robot. The harmonic suppression of permanent magnet synchronous motor will determine the completion of inspection work. Therefore, from the point of view of control algorithm, this article analyzes the speed, time, and frequency domain signals of ...
Ma Long +3 more
wiley +1 more source
Sensorless Load Torque Estimation and Passivity Based Control of Buck Converter Fed DC Motor
The Scientific World Journal, 2015 Passivity based control of DC motor in sensorless configuration is proposed in this paper. Exact tracking error dynamics passive output feedback control is used for stabilizing the speed of Buck converter fed DC motor under various load torques such as ...
S. Ganesh Kumar, S. Hosimin Thilagar
doaj +1 more source
Systems Science & Control EngineeringThis paper deals with the sensorless control of a Permanent Magnet Synchronous Motor (PMSM) to be employed on a turbo-generator to recover the exhaust gas energy of an Internal Combustion Engine (ICE).
Silvia Di Girolamo +4 more
doaj +1 more source
Advances in Electrical and Electronic Engineering, 2016 Conventional techniques for sensorless control of permanent magnet synchronous motor drive (PMSM), which requires information on rotor position, are reviewed, and recent developments in this area are introduced in this paper along with their inherent ...
Jyoti Agrawal, Sanjay Bodkhe
doaj +1 more source
Sensorless control of SRM using magnetizing curves
Electrical Engineering in Japan, 2000 AbstractAmong various variable speed drives, switched reluctance motors (SRMs) have been found to be competitive with traditional ac and dc motors because of their simple construction and drive electronics. However, the necessity of using a shaft‐mounted position sensor is one of the drawbacks of the SRM from the standpoint of cost, size, and ...
Takashi Kosaka +2 more
openaire +2 more sources
EnergiesAmong the existing sensorless control algorithms for permanent magnet synchronous motors (PMSMs), the model reference adaptive system (MRAS) is widely utilized due to its merits of good robustness, high stability, and rapid response.
Kai Chen +5 more
doaj +1 more source
FUZZY LOGIC BASED ADAPTATION MECHANISM FOR ADAPTIVE LUENBERGER OBSERVER SENSORLESS DIRECT TORQUE CONTROL OF INDUCTION MOTOR [PDF]
Journal of Engineering Science and Technology, 2016 Many industrial applications require high performance speed sensorless operation and demand new control methods in order to obtain fast dynamic response and insensitive to external disturbances. The current research aims to present the performance of the
A. BENNASSAR +3 more
doaj
Measurement + Control, 2019 Even if there exists remarkable applications of induction machines in variable speed drives and also in speed sensorless control in the low–high speed region, open/closed loop estimators in the literature utilized on induction machine sensorless position
Caglar Uyulan
doaj +1 more source