Patent ID: 9303785
Filing Date: 2016-04-05
CPC Classification: F16K,Y10T

Claim Text:
1. A method for controlling a valve apparatus, the valve apparatus comprising a valve, a driver and a position database, the valve being connected with at least one pipeline and having a valve gate, the valve gate being moved to control an opening for a flow of fluid in the pipeline so as to control an amount of the fluid flowing through the valve, the driver controlling movements of the valve gate to control the opening of the valve gate, the method comprising the steps of: storing a standard track in the position database, where the standard track is an ideal track for the positions of the valve gate with respect to opening time; recording different positions detected by a position detector with respect to time in the position database to form a position-time track for the opening of the valve gate; comparing the position-time track with the standard track to find out whether at least one corner portion is shown in the position-time track, with the corner portion indicating that the valve gate encounter obstacles in a moving path; and moving the valve gate back and forth for removing the obstacles if the at least one corner portion is shown in the position-time track.