Patent ID: 7082901
Filing Date: 2006-08-01
Classification: F01P,F02D,G05D

Abstract:
1. A method of controlling a device for adjusting the circulation of a gaseous or liquid fluid through an opening or a passage through a pipe during an operating cycle, the device comprising an adjusting component such as a valve which is associated in its operation with a means for controlled actuation of the movable element of said component, with a means for sensing the actual position of said movable element and with a control means connected particularly to the two said means, the control means delivering a control signal (IN) to said electrical actuating means particularly according to a reference signal (SIGN) and receiving a signal (OUT); transmitting by said sensing means, for positioning the movable element, initializing the adjusting device by determining the “fully closed” and “open to the maximum” positions of the movable element ( 1 ″) at the beginning of any operating cycle, picking up the corresponding (OUT) signals delivered by the sensing means ( 4 ), and indexing the control means ( 5 ) and setting its parameters accordingly then, during the consecutive running of the operating cycle, continuously or at regular intervals putting the open/closed state if the adjusting component ( 1 ′) under the control of the reference signal (SIGN), by adjusting the control signal (IN) which is applied according to the result of comparing the indicated positions of the movable element ( 1 ″), obtained firstly from the reference signal (SIGN) and secondly from the signal (OUT) delivered by the sensing means ( 4 ), the method characterized in that the (OUT) positioning signal of the movable element ( 1 ″), delivered by the sensing means ( 4 ) when the adjusting component ( 1 ′) is fully closed, is picked up while the movable element ( 1 ″) is forced into its fully closed position by the electrical actuating means ( 3 ), the fully closed position being indicated by the absence of any change in the (OUT) signal despite the application of an (IN) signal designed to cause additional displacement of the movable component ( 1 ″) in the closing direction, and/or by an abnormal change in the electricity consumption of the actuating means, particularly a considerable increase in the current consumption.