Power controlled exercising machine and method for controlling t

Details Power controlled exercising machine and method for controlling t Power controlled exercising machine and method for controlling t

1994-05-25

2000-05-02

Richman, Glenn E.

Exercise devices

Having specific electrical feature

Equipment control

482900, A63B 2100

Patent

active

060566701

ABSTRACT:
An exercise machine is described which is entirely self-contained without any source of outside power. A rechargeable battery is used to maintain the exercise system operative for a time-out period. At all other times the machine is powered by the user. The machine is compact, light, rigid and sized to fit through a standard doorway. The entire exercise machine is provided with a wrap-around handrail into which a display input/output unit has been integrally provided. The exercise machine or stepper utilizes a dynamically controllable load or alternator which is controlled by a computer circuit to maintain the power input into the exercise machine or to maintain metabolically energy consumption rate within a user of the exercise machine at a predetermined, approximately constant level, regardless of the speed of stepping or the actual or effective weight of the user. The alternator is dynamically controlled by pulse width modulating its field coils. The power output by the generator is sensed by monitoring the alternator's output current and voltage. Additional load control is achieved by dissipating part of the alternator current in a dissipative load when the alternator voltage reaches a predetermined maximum set point.

REFERENCES:
patent: 4298893 (1981-11-01), Holmes
patent: 4542897 (1985-09-01), Melton et al.
patent: 5246412 (1993-09-01), Chen
patent: 5403252 (1995-04-01), Leon et al.

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