A DISPLACEMENT-SENSING, CONSTANT-TORQUE RESPONSE LEVER

Abstract The interfacial phenomena between tread rubber compounds and rough surfaces are responsible for most of the behavior of a tire on the road. A new device was developed for the investigation of these phenomena in the laboratory. The device consists of a fully instrumented road wheel on which a simple geometry specimen is driven. The possibilities offered by this device are to perform tests at constant slip or at constant torque on both wet and dry surfaces, with complex cycles. The machine allows the measurement of slip, tangential forces, and temperature on the specimen, and computer software adds the possibility of applying Fourier analyses on force, road wheel speed, and specimen speed data. Other possibilities offered by the road wheel are to change the road surface, the load on the specimen, and the water rate. The description of a complete experiment is detailed in the paper showing the correlation of data with actual tire performances.

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Constant torque walking

Proceedings of the 2000. IEEE International Conference on Control Applications. Conference Proceedings (Cat. No.00CH37162) ◽

10.1109/cca.2000.897393 ◽

2002 ◽

Cited By ~ 2

Author(s):

K. Uchida ◽

K. Furuta

Keyword(s):

Constant Torque

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Development of constant torque device and its application to power assist systems

2014 IEEE/ASME International Conference on Advanced Intelligent Mechatronics ◽

10.1109/aim.2014.6878077 ◽

2014 ◽

Cited By ~ 3

Author(s):

Yasuhiro Minamiyama ◽

Takanori Kiyota ◽

Takahiro Mori ◽

Noboru Sugimoto

Keyword(s):

Constant Torque

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Research on the Performance Simulation of the Transmission System of Loader with Secondary Regulating Technique

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.426-427.299 ◽

2010 ◽

Vol 426-427 ◽

pp. 299-302

Author(s):

Fa Ye Zang

Keyword(s):

Mathematical Model ◽

Fuzzy Control ◽

Energy Saving ◽

High Speed ◽

Transmission System ◽

Performance Simulation ◽

Constant Torque ◽

Braking Torque ◽

The Mathematical Model ◽

Inertial Energy

Based on deeply analyzing the working principles and energy-saving theory of loader secondary regulating transmission system, regenerating the transmission system’s inertial energy by controlling constant torque was put forward. Considering large changes of the parameters of the transmission system and its non-linearity, a fuzzy control was adopted to control the transmission system, and the mathematical model of the system was established, then the simulations of the performance of the transmission system has been conducted. The conclusion was made that the inertial energy can be reclaimed and reused in the system by the application of the secondary regulation technology, and braking by controlling constant torque is stable, it can ensure the security of braking at high speed and also permits changing the efficiency of recovery by changing the braking torque. The system’s power has been reduced and energy saving has been achieved.

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New Type of Hydraulic Rotary Actuator; Development and Application in a Large Telerobotic Manipulator System

10.1115/imece2001/fpst-25015 ◽

2001 ◽

Author(s):

John R. Haas

Keyword(s):

Modular Design ◽

Large Diameter ◽

Stick Slip ◽

Precision Motion Control ◽

Constant Torque ◽

Rotary Actuator ◽

Continuous Rotation ◽

Potential Applications ◽

New Type ◽

Precision Motion

Abstract This paper describes a new type of hydraulic rotary actuator specifically developed to provide precision motion control in a very large, man rated, underwater telerobotic manipulator system. The high pressure, high torque rotary actuators are hydrostatically balanced, provide continuous rotation, constant torque output, exhibit minimal “stick-slip” and zero backlash. It is believed that the combination of features and the performance exhibited by these actuators represent an improvement in actuator technology to such an extent as to make projects previously determined unfeasible, now practical. Features of particular design value are a very large diameter through bore, and a truly modular design permitting use as an integral structural member. This paper will address design rationale, operating principles, key design features, product development highlights, an astronaut trainer case study, future development and potential applications.

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Torque Motor, Constant-Torque Spring Motors

American Journal of Physics ◽

10.1119/1.1941834 ◽

1962 ◽

Vol 30 (11) ◽

pp. xiv-xiv ◽

Cited By ~ 1

Keyword(s):

Constant Torque

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Constant torque magnetic couplings

IEEE Transactions on Magnetics ◽

10.1109/tmag.1970.1066722 ◽

1970 ◽

Vol 6 (2) ◽

pp. 306-306

Author(s):

M. Rouques

Keyword(s):

Constant Torque ◽

Magnetic Couplings

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Mode Selecting Control of Interior Permanent Magnet Synchronous Motor for Full Speed Range Operation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.43.21 ◽

2010 ◽

Vol 43 ◽

pp. 21-27 ◽

Cited By ~ 1

Author(s):

Zhi Hong Wu ◽

Si Bei Wu ◽

Yuan Zhu ◽

Guang Yu Tian

Keyword(s):

State Transition ◽

Permanent Magnet Synchronous Motor ◽

Operating Conditions ◽

Constant Torque ◽

Speed Range ◽

Interior Permanent Magnet ◽

Full Speed ◽

Source Voltage ◽

Transition Scheme ◽

Flux Weakening

The paper presents a new method for mode selecting which includes constant torque mode and flux-weakening mode. The proposed method modifies the working modes not by LUT (look-up table), but by the size of T0. Attractive features of this state transition technique include no dependency on the machine parameters, the least calculated quantities, making full use of the source voltage of the battery, and smooth and fast transition into and out of the flux-weakening mode. Simulation results at various operating conditions are presented to verify the feasibility of the proposed mode transition scheme.

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