The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2012
Filed:
Aug. 11, 2009
Tetsuro Ishikawa, Kanagawa-ken, JP;
Masuo Yamasaki, Tokyo, JP;
Akimasa Nakai, Saitama-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A plant controlling system includes: a velocity-type PID controlling unit to receive a control deviation between a process value and control set value, and calculate and output a manipulated variable deviation for operation targets; a switching unit to switch and then output the manipulated variable deviation from the velocity-type PID controlling unit to the operation targets; manual operating units, having an integration function, that are associated with the operation targets and output either one of the manipulated variable calculated by the integration of the manipulated variable deviation output from the switching unit and a manipulated variable based on a manually set value to the respective associated operation targets based on a control mode of the operation targets; and a switch controlling unit configured to control operation of the switching unit based on the control mode of the operation targets and the manipulated variables output to the operation targets.