Results 61 to 70 of about 15,554 (206)

Robust position control of ultrasonic motor using VSS observer [PDF]

open access: yes, 2010
Intrinsic properties of ultrasonic motor (high torque for low speed, high static torque, compact in size, etc.) offer great advantages for industrial applications. However, when load torque is applied, dead-zone occurs in control input.
Darba, Araz   +4 more
core   +1 more source

Open loop control of a stepping motor with step loss detection and stall detection using back-EMF based load angle estimation [PDF]

open access: yes, 2014
Stepping motors are the most used electrical machines for low power positioning. The drive controls the machine so that the rotor performs a fixed angular displacement after each step command pulse.
Derammelaere, Stijn   +2 more
core   +1 more source

Gallium Nitride‐Based Electrode Materials for Supercapacitors: From Wide Band Semiconductor to Energy Storage Platform

open access: yesSmall, EarlyView.
This review focuses on capability of Gallium Nitride (GaN)‐based supercapacitors, bordering the advancement from porous architecture to novel hybrid nanostructures. It systematically investigates synthesis approaches and charge storage mechanisms that generate remarkable energy densities and competent cyclic stability.
Farasat Haider   +7 more
wiley   +1 more source

重载工程车辆电磁制动器动态特性分析

open access: yesJixie chuandong, 2014
For the problems of traditional heavy-duty engineering vehicle driven hydraulic or pneumatic disc brakes with braking pressure,sealing and other demanding,a new electromagnetic brake system is established,by introducing booster in the model,the internal ...
李民和
doaj  

Development of Instantaneous Braking System for Rotating Members

open access: yesEngineering Proceedings
Brakes are essential parts of any system that involves motion. A few seconds are spent applying the brake, accumulating enough force to retard a system. In case of emergency stops, we need an efficient braking system that acts quickly and safely to avoid
Bennet Anand Ronald   +4 more
doaj   +1 more source

Three-dimensional electromagnetic field model of an auger electromechanical converter with an external solid rotor [PDF]

open access: yes, 2019
Purpose. Creating a three-dimensional mathematical model of the electromagnetic field of an auger electromechanical converter with the external solid rotor, taking into account the geometry peculiarities and the finite length factor.
Brozhko, R   +3 more
core   +1 more source

AI‐enabled bumpless transfer control strategy for legged robot with hybrid energy storage system

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
Abstract Designing Hybrid energy storage system (HESS) for a legged robot is significant to improve the motion performance and energy efficiency of the robot. However, switching between the driving mode and regenerative braking mode in the HESS may generate a torque bump, which has brought significant challenges to the stability of the robot locomotion.
Zhiwu Huang   +6 more
wiley   +1 more source

Design and implementation of a linear motor for multi-car elevators [PDF]

open access: yes, 2008
The multi-car elevator system is a revolutionary new technology for high-rise buildings, promising outstanding economic benefits, but also requiring new technology for propulsion, safety and control.
Kazan, Ender   +5 more
core   +2 more sources

Multiterminal High‐Voltage Direct Current Projects: A Comprehensive Assessment and Future Prospects

open access: yesHigh Voltage, EarlyView.
ABSTRACT Multiterminal high‐voltage direct current (MT‐HVDC) systems are an important part of modern power systems, addressing the need for bulk power delivery and efficient renewable energy integration. This paper provides a comprehensive overview of recent advances in MT‐HVDC technology, including launched projects and ongoing initiatives.
Mohammad Hossein Mousavi   +3 more
wiley   +1 more source

Computation of Nonlinear Magnetic Functions in Electromagnetic Brakes for Electric Drive Systems [PDF]

open access: yes, 2015
This paper describes the computation of magnetic quantities as magnetic flux, flux density, field intensity, magnetic force, etc. in the magnetic circuit of spring operated electromagnetic brakes which are applied to rotary motions of drives as for ...
Steinbrunn, J.
core  

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