Reaction force compensator

Details Reaction force compensator Reaction force compensator

1985-11-08

1987-01-20

Dobeck, Benjamin

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Mechanically coupled in fixed ratio of movement

318161, 318632, H02P 154

Patent

active

046382216

ABSTRACT:
Reaction force compensation means 70 (FIG. 1) for countering the reaction torque of a heavy body, such as rotatable yoke assembly 20, when accelerated relative to flimsily supported body 21 about axis 22, comprises a reaction member 71 rotatable about the, or a parallel, axis 22 and a reaction drive motor 74 coupled to rotate the reaction member by way of velocity step-down gearing 75. In response to acceleration of the body 21 the reaction drive motor 74 accelerates member 71 in the opposite direction producing an equal and opposite reaction torque on the structure. The reaction member is made with a higher moment of inertia about axis 22 than the body and is accelerated at a correspondingly lower rate to give the balancing reaction torque while requiring a smaller mechanical power input than might be expected. The power required of the drive motor is minimized by optimizing the gearing ratio having regard to the moments of inertia of the reaction member and drive motor.

REFERENCES:
patent: 2305816 (1942-12-01), Sonnberger
patent: 3434025 (1969-03-01), Parkinson et al.
patent: 4126818 (1978-11-01), Taylor
patent: 4323828 (1982-04-01), Terada et al.
patent: 4373147 (1983-02-01), Carlson, Jr.
patent: 4375047 (1983-02-01), Nelson et al.

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