Torque generator device, application thereof to physical exercis

Details Torque generator device, application thereof to physical exercis Torque generator device, application thereof to physical exercis

1994-08-17

1996-10-29

Apley, Richard J.

Exercise devices

Having specific electrical feature

Equipment control

482 9, 318806, A63B 21005

Patent

active

055691218

ABSTRACT:
A torque generator device for simulating in physical exercise apparatus a load opposing a force exerted by a user includes an asynchronous motor controlled by a variable speed drive of the flux vector control reversible type whose current is controlled by a torque regulator loop. The variable speed drive fixes the flux in the motor so that the torque can be controlled independently. The torque regulator loop processes measurements from a force sensor which it compares with a force set point to control the current fed into the motor by the variable speed drive. The device thus generates a constant torque which opposes the force exerted by the user.

REFERENCES:
patent: 4084810 (1978-04-01), Forsman
patent: 4138106 (1979-02-01), Bradley
patent: 4456868 (1984-06-01), Yamamura et al.
patent: 4757248 (1988-07-01), Fujioka et al.
patent: 4885518 (1989-12-01), Schauder
patent: 4907797 (1990-03-01), Gezari et al.
patent: 4979733 (1990-12-01), Prud'Hon
patent: 5117170 (1992-05-01), Keane et al.

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