نتایج جستجو برای: linear motors

تعداد نتایج: 494508  

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2009
Yan Chai Stefan Klumpp Melanie J I Müller Reinhard Lipowsky

We study the traffic of two types of molecular motors using the two-species asymmetric simple exclusion process (ASEP) with periodic boundary conditions and with attachment and detachment of particles. We determine characteristic properties such as motor densities and currents by simulations and analytical calculations. For motors with different unbinding probabilities, mean-field theory gives ...

2000
Li Xu Bin Yao

This paper studies the high performance robust motion control of linear motors which are subjected to significant force ripple. Based on the structural property of linear motors, some simple models with unknown weights are used to approximate the force ripple as well as other reproducible nonlinearities, such as friction. The unknown weights are adjusted on-line via certain parameter adaptation...

2008
Dan-Cristian POPA Vasile IANCU Loránd SZABÓ

The transverse flux machines (TFM), introduced at the beginning of the 80’s, are possible solutions for diverse applications requiring special electrical machines [1]. The researches have focused until now mainly on rotary TFMs. A new type of permanent magnet linear transverse flux reluctance machine is proposed here. Such machines can be successfully applied for example in conveyor application...

2003
B. S. Bhangu C. M. Bingham

The paper investigates various non-linear observer-based rotor position estimation schemes for sensorless control of permanent magnet synchronous motors (PMSMs). Attributes of particular importance to the application of brushless motors in the automotive sector, are considered e.g. implementation cost, accuracy of predictions during load transients, the impact of motor saliency and algorithm co...

Journal: :advances in railway engineering,an international journal 2014
mojtaba khorshidi seyed saeed fazel bijan moaveni

in this paper, a neural network model reference adaptive system speed observer is designed, which can be used in speed control of linear induction motors (lims). dynamical equations of lim have been considered accurate. in other words, the end effect and the electrical losses of the motor have been included in the motor equivalent circuit. then equations of the reference model and adaptive mode...

This paper describes the application of static var compensators, (SVC) on an electrical distribution network containing two large synchronous motors, one of which is excited via a three-phase thyristor bridge rectifier. The second machine is excited via a diode bridge rectifier. Based on linear optimization control (LOC), the measurable feedback signals are applied to the control system loops o...

Journal: :Transactions of the Institute of Systems, Control and Information Engineers 1998

2014
K. Park H. K. Lee

In contrast to the conventional rotational compressors, the linear compressor is driven by a linear motor directly coupled with a piston. So the performance of the linear compressor is strongly dependent on the characteristics of the linear motor. In addition to high efficiency, the parameters of a linear motor should be nearly constant regardless of the amount of the current flow and position ...

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