Process control system
AssigneeKabushiki Kaisha Toshiba
InventorsTakashi Shigemasa, Akimoto Kamiya
Life of this patent
Estimating the term…
Abstract
A process control system in a multi-input/output coordinate control system for executing coordinate control of a main input. The process control system sets an operating point set value for an operating point of an n-th control output, generates the n-th control output to control the main input based on the n-th control output, and generates an m-th control output to control the operating point of the n-th control output so that the operating point of the n-th control output becomes equal to the operating point set value, thereby to allow the n-th control output of fast response to operate at the operating point set value by controlling the main input.
Claims7
A process control system in a multi-input/output coordinate control system including a main input for executing coordinate control of said main input, said process control system, comprising:
- operating point setting means for setting an operating point set value for an operating point of an n-th control output of fast response to said main input;
- n-th output control means for generating said n-th control output of fast response to control said main input based on said n-th control output;
- and
- m-th output control means for generating an m-th control output to control said operating point of said n-th control output so that said operating point of said n-th control output becomes equal to said operating point set value set in said operating point setting means based on said m-th control output;
- thereby to allow said n-th control output of fast response to operate at said operating point set value by controlling said main input.
A process control system in a multi-input/output coordinate control system including a main input for executing coordinate control of said main input, said process control system, comprising:
- higher-priority output control means for generating a higher-priority output to control said main input based on said higher-priority output;
- lower-priority output control means for generating a lower-priority output to control said main input based on said lower-priority output;
- lower-priority output block means for blocking said lower-priority output so as to prevent said higher-priority output from reducing before said higher-priority output reaches an upper limit value;
- and
- higher-priority output block means for blocking said higher-priority output so as to prevent said lower-priority output from increasing before said lower-priority output reaches a lower limit value;
- thereby to control said higher-priority output toward said upper limit value on a priority basis and said lower-priority output toward said lower limit value on a priority basis, while executing coordinate control of said main input.
Dependencies are inferred from the claim text.