Boots – shoes – and leggings
Patent
1984-05-29
1987-08-25
Shaw, Gareth D.
Boots, shoes, and leggings
G06F 1300
Patent
active
046897364
ABSTRACT:
A method and apparatus for carrying out the control of a process using a distributed process controller wherein each controller receives during consecutive time slots of a scan cycle inputs from the process representing measured values of process variables to be controlled by the control loops of the system. Control is provided by the use of a preselected algorithm in each of the slots with the output of that algorithm being used to control certain of the loops or to provide input to another slot or to a control program. Control programs which can be written by the user are run sequentially in the background to provide additional loops of control or inputs to the slots so that the number of algorithms which can be used is increased without drastically increasing the equipment required.
REFERENCES:
patent: 4189765 (1980-02-01), Kotalik et al.
patent: 4296464 (1981-10-01), Woods et al.
patent: 4303973 (1981-12-01), Williamson, Jr. et al.
Glaudel Stephen P.
Grissom Paul H.
General Signal Corporation
Huberfeld Harold
Miller, Jr. William G.
Mills John G.
Shaw Gareth D.
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