Exercise apparatus and method

Details Exercise apparatus and method Exercise apparatus and method

1998-07-13

2000-05-23

Richmon, Glenn E.

Exercise devices

Having specific electrical feature

Equipment control

482 54, 482903, A63B 2100

Patent

active

060660740

ABSTRACT:
An exercise machine includes a switched reluctance motor which drives a moveable surface upon which a user can exercise. A controller which is responsive to sudden load changes on the moveable surface controls the torque developed by the motor substantially to maintain a desired motor speed output without the need for a flywheel. In a first embodiment, the controller uses a feedback signal from a rotor position encoder and a motor speed indicator to control the motor output using a proportional-plus-integral signal processor. In a second embodiment, a composite state observer is used to provide estimates of the rotor position, motor speed and load disturbance states from which real time closed loop control of the motor speed with load disturbances on the moveable surface is effected. Corresponding methods also are disclosed.

REFERENCES:
patent: 5569121 (1996-10-01), Sellier
patent: 5583403 (1996-12-01), Anjanappa et al.

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