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:
May. 30, 2017
Filed:
Mar. 31, 2016
Azbil Corporation, Tokyo, JP;
Hideaki Someya, Tokyo, JP;
Hiroaki Narita, Tokyo, JP;
Makoto Saruwatari, Tokyo, JP;
Tomofumi Ohashi, Tokyo, JP;
AZBIL CORPORATION, Tokyo, JP;
Abstract
A table indicating a relationship between a differential pressure across a valve unit and a torque that is to be outputted by a motor (an output torque) is stored in a table storing portion. A valve opening controlling portion and a torque controlling portion are provided in a controlling portion. The valve opening controlling portion uses the actual opening θpv, from the valve opening detector, as the valve opening measured value, and sends a driving command to the motor so as to cause the valve opening measured value θpv to match the valve opening setpoint θsp. The torque controlling portion acquires, from the table, a torque corresponding to the differential pressure ΔP across the valve unit, detected by the differential pressure detecting portion, and sends, to the motor, a command (a torque output command) to cause outputting of the torque that has been acquired.