Results 51 to 60 of about 2,619 (292)

Fuzzy MRAS Speed Sensorless Induction Motor Drive Control for Electric Vehicles

Energies
This paper proposes a new fuzzy logic-based rotor flux model reference adaptive system (FLC-MRAS) for rotor speed estimation in induction motor drives, replacing the constant-gain PI controller used in conventional MRAS schemes.
Saqib Jamshed Rind, Saba Javed, Hashim Raza Khan, Muhammad Hashir Bin Khalid, Kamran Arshad, Khaled Assaleh   +5 more
doaj   +1 more source

An Online VSI Error Parameter Identification Method for Multiphase IM With Non-Sinusoidal Power Supply

IEEE Access, 2022
Voltage-source-inverter (VSI) nonlinearity compensation is an important scheme for improve motor performance. The traditional off-line method is cumbersome and the compensation effect is poor because it does not simulate the real operation of the motor ...
Sheng Li, Guanghui Yang, Jian Zhang, Jiaqiang Yang   +3 more
doaj   +1 more source

Observer-based Fault Detection and Diagnosis for Mechanical Transmission Systems with Sensorless Variable Speed Drives [PDF]

, 2015
Observer based approaches are commonly embedded in sensorless variable speed drives for the purpose of speed control. It estimates system variables to produce errors or residual signals in conjunction with corresponding measurements. The residual signals
Abusaad, Samieh, Ball, Andrew, Gu, Fengshou, Zhang, R.   +3 more
core  

High‐Resolution MRI Revealed Different Etiology‐Specific Associations With Cerebral Infarction in Adult Moyamoya Vasculopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective High‐resolution MRI enables detailed assessment of intracranial vessel wall pathology in moyamoya vasculopathy. We aimed to classify adult moyamoya vasculopathy etiologies using high‐resolution MRI and to examine subtype‐specific associations between high‐resolution MRI features and ischemic infarction.
Guangsong Han, Jiachun Pan, Yuehui Hong, Xiaoyuan Fan, Ming Yao, Lixin Zhou, Yicheng Zhu, Feng Feng, Jun Ni   +8 more
wiley   +1 more source

Mathematical Modelling and Performance Assessment of Neural Network-Based Adaptive Law of Model Reference Adaptive System Estimator at Zero and Very Low Speeds in the Regenerating Mode

Mathematics
Precise speed estimation of sensorless induction motor (SIM) drives remains a significant challenge, particularly at zero and very low speeds. This paper proposes a mathematically modeled and enhanced stator current-based Model Reference Adaptive System (
Mohamed S. Zaky, Kotb B. Tawfiq, Mohamed K. Metwaly   +2 more
doaj   +1 more source

The International Bar Association and Trade in Legal Services: Meta Law-Making in International Economic Law? [PDF]

, 2019
This article presents the International Bar Association as a highly-influential but often overlooked non-state actor through the lens of its involvement in the standardization of Mutual Recognition Agreements (MRA)s for legal services.
Collins, D. A.
core  

Additive Manufacturing of Patient‐Specific Intracranial Aneurysm Cell Culture Models

Advanced Materials Technologies, EarlyView.
Patient‐specific intracranial aneurysm models were fabricated using chocolate moulding, 3D printed water‐soluble cores, and direct resin 3D printing. Moulding PDMS around sacrificial cores made of chocolate or 3D printed water‐soluble resin yielded accurate, expandable, and endothelializable models that outperformed resin‐based approaches.
Chloe M. de Nys, Jaimee‐Lee Wood, James I. Novak, Danilo Carluccio, Craig D. Winter, Ashley R. Murphy, Mark C. Allenby   +6 more
wiley   +1 more source

Robust Predictive Current Control of IMs With MRAS-Based Parameter Estimation

IEEE Access
Induction motors are extensively employed in numerous industrial and commercial applications due to their robustness, simplicity, and cost-effectiveness.
Gabriel Caramori, Igor Oliani, Angelo S. Lunardi, Alfeu J. Sguarezi Filho   +3 more
doaj   +1 more source

Beyond Transconductance: Cell‐Polymer Coupling Determines Fidelity in Action Potential Recording via Electrolyte‐Gated Polymer Transistors

Advanced Science, EarlyView.
High electrical performance alone does not guarantee efficient bioelectronic signal transduction. Despite excellent mixed ionic‐electronic conduction, recordings from cardiomyocytes reveal that p(g2T‐TT)‐based OECTs predominantly transduce field potential FP‐like signals due to weak cell‐polymer coupling.
Giulia Zoe Zemignani, Elena Mancinelli, Gabriele Tullii, Aleksandr Khudiakov, Cristiano Bortolotti, Shubham Tanwar, Peter J. Schwartz, Luca Sala, Maria Rosa Antognazza, Mario Caironi, Adrica Kyndiah   +10 more
wiley   +1 more source

Novel Speed Sensorless DTC Design for a Five-Phase Induction Motor with an Intelligent Fractional Order Controller Based-MRAS Estimator

Power Electronics and Drives
This paper presents a fractional-order adaptive mechanism-based model reference adaptive system (MRAS) configuration for speed estimation of sensorless direct torque control (DTC) of a five-phase induction motor.
Guedida Sifelislam, Tabbache Bekheira, Benzaoui Khaled Mohammed Said, Nounou Kamal, Nesri Mokhtar   +4 more
doaj   +1 more source