Development of a Torque Measurement Method on a Rotating Shaft Using a Battery-Less Sensor

2012 ◽  
Author(s):  
Shuhei Hashimoto ◽  
Yasuhiro Kanda ◽  
Koichi Onishi
Keyword(s):  
Measurement Method ◽  
Torque Measurement ◽  
Rotating Shaft

Validierung einer optischen Drehmomentmessung*/Validation of an optical torque measurement

2017 ◽  
Vol 107 (09) ◽  
pp. 590-593
Author(s):  
T. Schneider ◽  
J. Wortmann ◽  
B. Eilert ◽  
M. Stonis ◽  
L. Prof. Overmeyer
Keyword(s):  
Measurement Method ◽  
Rotation Angle ◽  
State Of The Art ◽  
Torque Sensor ◽  
Torque Measurement ◽  
Research Project ◽  
Industrial Sectors ◽  
Current State ◽  
Stand Der Technik ◽  
Optical Torque

Das Erfassen von Drehmomenten durch Sensoren sowie das Erzeugen von Drehmomenten stellen eine wichtige Basis für viele Industriezweige dar. Im Rahmen eines Forschungsprojektes wurde ein optisches, berührungsloses Messverfahren zur absoluten Drehwinkel- und Drehmomentmessung entwickelt. Zum Vergleich mit dem aktuellen Stand der Technik wurde ein Versuchsstand aufgebaut sowie ein Referenzdrehmomentsensor eingesetzt. Die Ergebnisse dieser Validierung werden in diesem Fachaufsatz vorgestellt.   The measurement of torque via sensors as well as the generation of torque are the basis of many industrial sectors. Within a research project an optical and non-contact measurement method to detect the absolute rotation angle and torque was developed. For comparison with the current state of the art torque sensors a test stand was built and compared to a reference torque sensor. The results of this validation are presented in the present paper.

scholarly journals Torque Measurement of 3-DOF Haptic Master Operated by Controllable Electrorheological Fluid

2015 ◽  
Vol 15 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Jong-Seok Oh ◽  
Seung-Bok Choi ◽  
Yang-Sub Lee
Keyword(s):  
Measurement Method ◽  
Electrorheological Fluid ◽  
Torque Measurement ◽  
Spherical Joint ◽  
Structural Configuration ◽  
Robot Assisted ◽  
Bingham Model ◽  
New Type ◽  
Remote Controller ◽  
Er Fluid

Abstract This work presents a torque measurement method of 3-degree-of-freedom (3-DOF) haptic master featuring controllable electrorheological (ER) fluid. In order to reflect the sense of an organ for a surgeon, the ER haptic master which can generate the repulsive torque of an organ is utilized as a remote controller for a surgery robot. Since accurate representation of organ feeling is essential for the success of the robot-assisted surgery, it is indispensable to develop a proper torque measurement method of 3-DOF ER haptic master. After describing the structural configuration of the haptic master, the torque models of ER spherical joint are mathematically derived based on the Bingham model of ER fluid. A new type of haptic device which has pitching, rolling, and yawing motions is then designed and manufactured using a spherical joint mechanism. Subsequently, the field-dependent parameters of the Bingham model are identified and generating repulsive torque according to applied electric field is measured. In addition, in order to verify the effectiveness of the proposed torque model, a comparative work between simulated and measured torques is undertaken.

Drag Reduction of Surfactant Solutions for an Enclosed Rotating Disk

1999 ◽  
Author(s):  
Satoshi Ogata ◽  
Keizo Watanabe
Keyword(s):  
Drag Reduction ◽  
Pipe Flow ◽  
Transition Point ◽  
Rotating Disk ◽  
Torque Measurement ◽  
Rotating Disks ◽  
Rotating Shaft ◽  
Surfactant Solutions ◽  
Circular Pipe Flow ◽  
Maximum Drag Reduction

Abstract Recently, many studies on surfactant solutions have been conducted for drag reduction in a circular pipe flow. However, currently there are very few studies on rotating disks in the solutions. In this study, drag reduction for an enclosed rotating disk in surfactant solutions was clarified experimentally. Experiments were carried out to measure the torque acting on one side of a rotating disk, using a torque measurement device located at the top of the rotating shaft. Test surfactant solutions were Ethoquad O/12 at concentrations of 50, 100 and 200ppm. The temperatures of solutions were 18°C and 28°C. The clearances between the disk and the stator were 10mm and 20mm. It was shown that the Reynolds number at the transition point increased with increasing concentration and temperature of these solutions. The maximum drag reduction ratio was about 41% in 200ppm Ethoquad O/12 solution at 28°C.

Sign in / Sign up

Export Citation Format

Share Document