Sub-critical time modulated control mechanism

Motors: expansible chamber type – Constantly applied motive fluid with controlled venting

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91417R, 244 321, F15B 13044

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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.

REFERENCES:
patent: 3390612 (1968-07-01), Wills
patent: 3430536 (1969-03-01), Oelrich
patent: 3516331 (1970-06-01), Oelrich et al.
patent: 3521535 (1970-07-01), Oelrich
Heathkit Model No. 1G-72, p. 91, Heathkit Catalog 810/50, 1965.
Heathkit Model No. 1G-82, p. 92, Heathkit Catalog 810/50, 1965.
Heathkit Model No. 1G-72, 1GW-72, p. 37, Heathkit Catalog Supplement 800/54, May 1965.
Heathkit Model No. 1G-82, EUW-82, p. 37, Heathkit Catalog Supplement 800/54, May 1965.
Electronic Designs, Models 180, 182, 183 and 195, p. 946, Electronic Engineers Master Catalog, 1964-1965.
Exact Electronics, Inc., Types 240, 250, 251 and 255, p. 963, Electronic Engineers Master Catalog, 1964-1965.
Hewlett-Packard Co., Models 200 AB, 200 CD, 200 J, 200 S, 201 C, 202 A, 202 C, 204 B, 205 AG, 206 A, 207 A, 208 A, 208 A-DB, 241 A and 650 A, p. 995, Electronic Engineers Master Catalog, 1964-1965.
"Servomechanisms and Regulating Systems Design," Chestnut & Mayer, vol. 11, John Wiley & Sons, Inc., New York, N.Y., 1955, pp. 1-4 and 12-33.
"Servomechanism Analysis," Thaler and Brown, McGraw Hill Book Company, Inc., New York, N.Y. pp. 138-140.
"Feedback Control Systems", Gille, Pelegrin and Decaulne, McGraw-Hill Book Co., Inc., New York, N.Y., 1959, pp. 150-154, 475, 544-545 and 547-549.
"Servomechanism Fundamentals," Lever, Lesnick and Matson, McGraw-Hill Book Co., Inc., New York, N.Y., 1947, pp. 83-89 and 215-218.

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