Torque Estimation
Mostrando 13-18 de 18 artigos, teses e dissertações.
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13. Algoritmo preditivo baseado em modelo aplicado ao controle de velocidade do motor de indução / Speed control of induction motor using predictive algorithm
This thesis presents the results concerning the control of rotor flux and speed of the induction motor using MBPC strategy, which is based on the error minimization between the future set point and model prediction, resulting in control signals. In the case studied in this thesis the motor model is described in space-state. The non linear MBPC emploies searc
Publicado em: 2007
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14. Um estudo de estimativa de fluxo e conjugado em motores de indução trifásicos implementação utilizando DSP
This work presents a study and implementation of a torque estimator for three phase induction motors. Estimation is made from input voltages and currents and stator phase resistance is the only motor parameter needed. Torque estimation is obtained from stator flux estimation. This requires the integration of the phase counter electromotive force. An integrat
Publicado em: 2005
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15. A new robotic drive joint friction compensation mechanism using neural networks
The knowledge of realistic dynamic models to robotic actuators would be of great aid in the synthesis of control laws to robot manipulators, mainly in cases of great precision robotic or even for manipulators with flexible links. In this paper we present a training scheme and propose a structure of neural network (NN) to learn the friction torque of a geared
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-04
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16. Flux estimation and field oriented control of induction motors.
Na presente tese à apresentado o projeto completo de um observador de fluxo magnÃtico (determinÃstico, discreto e assintoticamente estÃvel) aplicado ao sistema de controle realimentado de um servo acionamento baseado no motor de induÃÃo. Uma vez que o modelo reduzido do motor de induÃÃo, alÃm de vÃrios outros tipos de sistemas fÃsicos, à represen
Publicado em: 2002
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17. Avaliação de uma nova proposta de controle V/F em malha aberta
This work has the aim of making the performance evaluation of a new open loop speed control method based on the scalar V/f technique for induction motors. The proposed system has been designed intending to minimize speed error through the introduction of the following compensation techniques: Voltage compensation based on the phasor analysis of the input var
Publicado em: 2000
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18. Preparation of bead-tailed actin filaments: estimation of the torque produced by the sliding force in an in vitro motility assay.
By coating covalently the surface of a polystyrene bead (diameter = 1 micron) with gelsolin, we have succeeded in attaching the bead selectively at the barbed end of an actin filament and forming a 1:1 bead-actin filament complex. On a layer of heavy meromyosin on a nitrocellulose-coated coverglass, this bead-actin filament complex slid smoothly, trailing th