公开(公告)号：US20240191810A1

公开(公告)日：2024-06-13

申请号：US18078413

申请日：2022-12-09

Applicant: Hamilton Sundstrand Space Systems International, Inc.

Inventor： Gabriel Fletcher ,  Ronald Crevier ,  Nicholas Stoerm Van Derzee ,  Robert P. Wichowski ,  Walter S. Hojnowski

IPC: F16K31/04 ,  F16K37/00 ,  G05D3/12

CPC classification number: F16K31/042 ,  F16K37/0033 ,  G05D3/12

Abstract: A valve control system includes a rotatable valve operably coupled to a motor, a valve position indicator configured to rotate with the rotatable valve, at least two sensing devices configured to detect the valve position indicator, and a controller. The at least two sensing devices include a home position sensing device and an end-of-travel position sensing device. The controller includes valve state determination logic having circuitry configured to monitor a status of a home indicator and an end-of-travel indicator of the rotatable valve, determine a commanded direction of movement of the rotatable valve, monitor the status of the home indicator and the end-of-travel indicator before a valve rotation stop is commanded and after the valve rotation stop is commanded, and determine a current state of the rotatable valve based on the commanded direction of movement and at least one of the status of the home indicator and the end-of-travel indicator.