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2017 International Conference on Robots & Intelligent System (ICRIS), 2017
The ramp automatic torque method in this paper is a new method to transform power torque on ramp for carbon-free car which is only driven by gravitational potential energy. This method is based on the torque structure and rope winding to achieve the good climbing ability of the carbon-free car. The mechanical structure includes starting wheel, climbing
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The ramp automatic torque method in this paper is a new method to transform power torque on ramp for carbon-free car which is only driven by gravitational potential energy. This method is based on the torque structure and rope winding to achieve the good climbing ability of the carbon-free car. The mechanical structure includes starting wheel, climbing
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Signal injection method without torque ripple based on maximum torque control frame
IEEJ Transactions on Electrical and Electronic Engineering, 2012AbstractThis paper presents a new signal injection method without torque ripple for sensorless controls of salient‐pole synchronous motors at low speeds. At low speeds, since the back electromotive force (EMF) including position information decreases, additional signals are injected to estimate position information of saliency. The torque ripple caused
Takumi Ohnuma +2 more
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Instantaneous Torque Control Method With Rated Torque-Sharing Ratio for Cascaded DFIMs
IEEE Transactions on Power Electronics, 2017This paper presents an instantaneous torque control method for cascaded doubly fed induction machines (CDFIMs) with a rated torque-sharing ratio feature under steady-state operation. A CDFIM includes two coupled main and auxiliary doubly fed induction machines, and the rated torque-sharing ratio herein means that the machine torques are proportional to
Ghasem Esfandiari +2 more
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The acceleration-oscillogram method of motor-torque measurement
Electrical Engineering, 1942The need for an improved method of measuring starting torque of large induction starting synchronous motors as compared to the power input and dynamometer methods, has led to the use of the acceleration oscillogram. A low ripple, permanent magnet type d-c generator is driven by the motor, and traces a time-speed oscillogram, from which acceleration ...
C. R. Atkinson, E. G. Downie
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Harmonic Torque Reduction Using Adaptive Sector-Based Torque Feedforward Method for PMSM
2018 IEEE Energy Conversion Congress and Exposition (ECCE), 2018In this paper, an adaptive sector-based torque feedforward method which reduces the effect of cogging torque in a permanent magnet synchronous machine is proposed. The proposed method has a table which contains the feedforward torque values directly corresponding to the base-positions equally spacing from 0 to $\boldsymbol{\pi}/3$ .
Jun Lee, Jung-Ik Ha
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Kinematic Analysis Method: Force and Torque
SAE Technical Paper Series, 1965<div class="htmlview paragraph">The program for force and torque analysis of planar and spatial linkages is part of the KAM (Kinematic Analysis Method) system. A general set of force and moment equilibrium equations has been developed. The program generates the parameters for the equations from a computer stored description (the plex) of a ...
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Methods for direct torque control of induction machines
2017 19th International Conference on Electrical Drives and Power Electronics (EDPE), 2017High performance drives with induction machines require use of vector control. The direct torque control and field oriented control are nowadays two most applied vector control methods. The main advantage of the method for direct torque control of induction machines is its simplicity and therefore its robustness.
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Joint torque optimization method for space manipulator
2014 IEEE International Conference on Information and Automation (ICIA), 2014Space manipulator is an integral part of space station in its life stages including construction, operation and development, during which there are tasks for the manipulator as manipulating light camera and also assembling cabins of weight. Workload range is so wide that optimization is necessary to be considered to improve execution performance on all
Yang Yang, Xiaoyu Shang, Hui Li
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A New Direct Torque Control Method of Induction Motor for Torque Ripple Reduction
Journal of the Korean Society of Marine Engineering, 2008Direct Torque Control[DTC] and Vector Control are the two schemes developed for high performance induction motor drives. DTC based induction motors are being increasingly used in various industrial applications. DTC offers fast torque response and better speed control with lesser hardware and processing costs as compared to vector controlled drives ...
Deok-Ki Kim +6 more
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An induced torque method for magnetoresistance measurements
Journal of Physics E: Scientific Instruments, 1970A method is described in which a spherical sample is rotated in a transverse magnetic field while measurements are made of the torque produced by currents induced in the sample. Exact expressions are derived for the torque in terms of the magnetoconductivity tensor, both for a sphere and for an ellipsoid.
J S Lass, A B Pippard
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