Devices for measuring braking torques generated by electromagnet

Details Devices for measuring braking torques generated by electromagnet Devices for measuring braking torques generated by electromagnet

1991-09-27

1993-02-16

Nguyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

36442601, 36442602, 73862333, 73862193, H02P 540

Patent

active

051874334

ABSTRACT:
A measuring device for measuring the braking torques generated by a vehicle-mounted electromagnetic retarder having a fixed secondary magnetic circuit or "stator". The device includes a sensor for measuring the speed of rotation V of the rotor of the retarder, a detector for detecting variations in the electrical potential difference U that is generated during operation of the retarder between two points on its stator, which points are sufficiently distinct from each other with respect to the way electrical potential varies at the two points during the operation, a further sensor for measuring the amplitude A of the variation, a memory circuit suitable for causing to correspond to each pair of measured values A and V the value C of the corresponding torque, and a unit for displaying or making use of the values C.

REFERENCES:
patent: 3960410 (1976-06-01), Leitz et al.
patent: 4545261 (1985-10-01), Gebben
patent: 4583411 (1986-04-01), Hales
patent: 4583611 (1986-04-01), Frank et al.
patent: 4616179 (1986-10-01), Braun
patent: 4672288 (1987-06-01), Abbondanti
patent: 4790606 (1988-12-01), Reinecke
patent: 4848851 (1989-07-01), Kuraoka et al.
patent: 4864173 (1989-09-01), Even

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