Results 101 to 110 of about 27,886 (209)
Observers Design For Sensorless PMSMs
WSEAS TRANSACTIONS ON SYSTEMS, 2023 A state observer is proposed for permanent magnet synchronous motors (PMSMs). The gain of this observer involves a design function that has to satisfy some mild conditions which are given. Different expressions of such a function are proposed. Of particular interest, it is shown that high gain observers and sliding mode like observers can be derived by
openaire +1 more source
Robust sensorless load angle control for stepping motors [PDF]
, 2015 In industry, the bulk of the stepping motors is driven in open loop full-step mode with maximum current to avoid step loss. This results in noisy operation due to torque ripples and a poor energy-efficiency.
Derammelaere, Stijn +2 more
core +1 more source
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
A comparative study of methods for estimating virtual flux at the point of common coupling in grid connected voltage source converters with LCL filter [PDF]
, 2016 Grid connected Voltage Source Converters (VSCs) with LCL filters usually have voltage measurements at the filter capacitors, while it can be important to control the active or reactive power injection at the grid-side of the LCL filter, for instance at a
Candela García, José Ignacio +5 more
core +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
IEEE Access, 2018 A high-frequency injection (HFI) sensorless control for interior permanent magnet synchronous motors with enhanced precision and widened speed range is proposed in this paper. The injection frequency reaches up to 2 kHz under a 50~100 kHz silicon carbide
Wei Qian +5 more
doaj +1 more source
Rotor resonances of high-speed permanent-magnet brushless machines [PDF]
, 2002 For high-speed machines, in particular, it is very important to accurately predict natural frequencies of the rotor at the design stage so as to minimize the likelihood of failure.
Ede, J.D., Howe, D., Zhu, Z.Q.
core +1 more source
Sensors, 2019 Robot arms used for service applications require safe human−machine interactions; therefore, the control gain of such robot arms must be minimized to limit the force output during operation, which slows the response of the control system.
Shih-Hsiang Yen +3 more
doaj +1 more source
Impact of switching functions on sliding mode observer in sensorless PMSM drives
Tạp chí Khoa học và Công nghệThe Sliding Mode Observer (SMO) algorithm has emerged as a promising solution for estimating the position and speed of motors, effectively replacing traditional physical sensors.
Nguyen Khanh Quang +3 more
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EnergiesThis paper investigates the nature of the low saliency ratio of large permanent magnet generators with fractional-slot concentrated windings (FSCWs). A saliency ratio of at least 1.2 is typically required to enable sensorless control of large generators ...
Isaac Rudden +4 more
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