Motors: expansible chamber type – Constantly applied motive fluid with controlled venting
Patent
1974-03-18
1982-11-30
Croyle, Carlton R.
Motors: expansible chamber type
Constantly applied motive fluid with controlled venting
91417R, 244 321, F15B 13044
Patent
active
043610730
ABSTRACT:
Fluid operated time modulated position control mechanisms are operated with a sub-critical carrier frequency. The carrier frequency is selected to be within a band lying between the minimum critical or natural frequency of an actuator system including the control mechanism and the maximum control signal frequency as determined by the system dynamics. The carrier signal is also selected to provide a dither amplitude sufficient to overcome the coulomb friction of the control mechanism and load.
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Divigard Albert J.
Oelrich John A.
Chandler Evans Inc.
Croyle Carlton R.
Look Edward
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