Concept

General Motors

Publications associées (34)

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Comparative study and selection criteria of linear motors

Samuel Chevailler

Initially, linear motors have been particularly dedicated to transportation systems. Nowadays, linear motors are meant to replace a system using a rotating motor and a transmission to realize a linear movement. With linear motors the performances increase ...

EPFL2006

A homotetrameric kinesin-5, KLP61F, bundles microtubules and antagonizes Ncd in motility assays

Henning Paul-Julius Stahlberg, Li Tao, Alex Mogilner

Background: Mitosis depends upon the cooperative action of multiple microtubule (MT)-based motors. Among these, a kinesin-5, KLP61 F, and the kinesin-14, Ncd, are proposed to generate antagonistic-sliding forces that control the spacing of the spindle pole ...

Elsevier BV2006

A contribution to energy saving in induction motors

Electric motors consume over half of the electrical energy produced by power stations, almost the three-quarters of the electrical consumption in industry and almost the half of commercial electrical consumption in developed countries. Motors are by far th ...

EPFL2005

SWISSMETRO: Combined Propulsion with Levitation and Guidance

Christophe Espanet

Swissmetro is a MAGLEV Project between the main cities of Switzerland, designed for a speed up to 500 [km/h] in two tunnels under partial vacuum. Two propulsion variants are considered: - the short stators of the linear homopolar motors are fixed with the ...

2004

Analytical and numerical modeling of an ultrasonic stepping motor using standing waves

Yves Perriard, José Fernandez Lopez

Piezoelectric motors (usually called ultrasonic) show interesting characteristics. Not only they deliver high torques at low speeds but their structure confers to them a braking torque without energy supply. This paper firstly present a list of possible so ...

2004

An Optimized Extended Kalman Filter Algorithm for Hybrid Stepper Motors

Yves Perriard, Jan Persson

In this article a high performance Extended Kalman filter algorithm is used to estimate rotor speed, rotor position and load torque in a Hybrid Stepper Motor (HSM). Together with a PI speed controller, the Kalman filter forms a very robust sensorless close ...

2003

Steady state Kalman filtering for sensorless control of hybrid stepper motors

Yves Perriard, Jan Persson

Extended Kalman filtering techniques have been successfully used as sensorless control schemes on many different types of synchronous motors. One big disadvantage of the extended Kalman filtering technique is the large computational cost. Even with today's ...

IEEE2003

New method for dynamic modeling of hybrid stepping motors

Yves Perriard, Marcel Jufer

To be able to calculate the performances of a hybrid stepping motor or to design it in a short time, it is essential to apply an efficient model, accepting a slight loss of precision. Using software based on finite elements and executing calculations are d ...

2002

Brushless motor design with global parametric optimization - application to an artificial blood pump

Yves Perriard

Designing transducers or motors, requires the analysis of a lot of parameters such as length, temperature, efficiency, weight, etc. The solution to obtain the optimum results for given specifications is to analyze globally all the free parameters in one go ...

Institute of Mechatronics and Information Systems2002

Transducer design with global parametric optimization

Yves Perriard

To design transducers or motors, it requires the analysis of a lot of parameters such as length, temperature, efficiency, weight, etc. To obtain the optimum results for given specifications, the solution is to analyze globally all the free parameters in on ...

IEEE2001