Control circuits of an apparatus for physical exercises

Details Control circuits of an apparatus for physical exercises Control circuits of an apparatus for physical exercises

1997-02-11

2000-12-12

Martin, David

Electricity: motor control systems

Closed loop speed control system for dc motor with commutator

Armature control by digital or combined analog and digital...

388829, 388903, 318434, 318461, H02P 511

Patent

active

061609552

ABSTRACT:
Apparatus providing a control and protection arrangement for walking/running exercise machines which is effective to provide protection against malfunction conditions which may be experienced by the exercise machines, to thereby protect users of the exercise machine against injuries. The present invention provides an efficient response time to motor speed variations to provide greater user safety.

REFERENCES:
patent: 4017775 (1977-04-01), Artrip
patent: 4581900 (1986-04-01), Lowe
patent: 4749181 (1988-06-01), Pittaway
patent: 4888813 (1989-12-01), Penn et al.
patent: 5650709 (1997-07-01), Rotunda et al.
patent: 5682459 (1997-10-01), Wikerson

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