Boots – shoes – and leggings
Patent
1982-06-18
1984-10-30
Atkinson, Charles E.
Boots, shoes, and leggings
364184, 318565, G05B 1300, G06B 1500
Patent
active
044803036
ABSTRACT:
A digital controller includes a central processor unit for generating a processed signal to be stored in an up-down counter. A manipulation signal generation circuit converts the contents of the up-down counter to a manipulation signal for an actuator. A feedback signal from a first coupling circuit connected to the up-down counter through a pulse width converter is applied to the central processor through an analog input circuit. The output signal of the up-down counter from the first coupling circuit and the output signal of the manipulation signal generation circuit are compared by a monitor circuit. An abnormality detection signal of the monitor circuit is generated as a result of the comparison and is applied to the central processor unit through a second coupling circuit.
REFERENCES:
patent: 3034718 (1962-05-01), Freitas et al.
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patent: 3974364 (1976-08-01), Sallberg et al.
patent: 3984665 (1976-10-01), Shriver et al.
patent: 4074354 (1978-02-01), Nakagawa et al.
patent: 4115860 (1978-09-01), Atwater
patent: 4118772 (1978-10-01), Takada
"Multi-Loop Process Controller Based on Microprocessor," Advances in Instrumentation, ISA/76 by Akihiro Uyetani.
Okuhara Hiroo
Takada Keisuke
Atkinson Charles E.
MacDonald Allen
Tokyo Shibaura Denki Kabushiki Kaisha
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