Boots – shoes – and leggings
Patent
1981-03-30
1983-06-07
Smith, Jerry
Boots, shoes, and leggings
244 1713, 244177, G06F 1550, G06G 778
Patent
active
043874320
ABSTRACT:
In an aircraft automatic flight control system, proportional commands (54, 55) provided to fast, limited authority inner loop actuators (12, 13) are integrated (41), and when the integrator output indicates that the inner loop actuators 12, 13 have been driven a certain percentage of their authority, a comparator (130, 132) activates a pulse generator (137, 138) to provide timed excitation of an actuator (150), thereby to position the aircraft control system outer loop by a commensurate increment. Driving the actuator for a longer time than the desired pulse width is detected (165-169) and causes automatic shutdown (190) of the actuator. Resetting the integrator at the start of each pulse (162, 104), and pulse-controlled gating of the pulse circuits (172, 135, 136) allow sensing of authority transitions which occur within a pulse, and permit a subsequent pulse in response thereto.
REFERENCES:
patent: 4004756 (1977-01-01), Gerstine et al.
patent: 4029271 (1977-06-01), Murphy et al.
patent: 4078750 (1978-03-01), Tomlinson
patent: 4109886 (1978-08-01), Tribken et al.
patent: 4213584 (1980-07-01), Tefft et al.
patent: 4279391 (1981-07-01), Adams et al.
Adams Don L.
Fischer William C.
Verzella David J.
Wright Stuart C.
Smith Jerry
United Technologies Corporation
Williams M. P.
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