公开(公告)号：US20250147103A1

公开(公告)日：2025-05-08

申请号：US18907721

申请日：2024-10-07

Applicant: ROLLS-ROYCE plc

Inventor： Benedict MERRETT

IPC: G01R31/34 ,  F16K37/00

Abstract: A fault detector for a control system that includes a controller, a solenoid driver, a current sensor and a solenoid. The solenoid driver provides a current to the solenoid in response to a control signal provided by the controller to the solenoid driver and the current sensor measures the current provided by the solenoid driver to the solenoid to determine a current measurement. At any moment, the control signal corresponds to one of a demanded zero current, a demanded first current magnitude or a demanded second current magnitude. The fault detector detects a fault based upon a comparison of the current measurement to an expected current range, wherein the expected current range is dependent upon which of the demanded zero current, demanded first current magnitude or the demanded second current magnitude the control system corresponds to at that moment.

公开(公告)号：US20250085307A1

公开(公告)日：2025-03-13

申请号：US18802020

申请日：2024-08-13

Applicant: ROLLS-ROYCE plc

Inventor： Graham WATSON ,  Benedict MERRETT

IPC: G01P3/00 ,  G05B19/4155

Abstract: An apparatus for calculating an angular speed of a rotary component includes a processor circuitry configured to: receive an in-phase signal and a quadrature signal from a sensor arrangement, each signal relating to a position of the rotary component; arithmetically sum the in-phase signal and the quadrature signal generated by the sensor arrangement to produce a combined time-domain signal; and calculate an angular speed of the rotary component based on the combined time-domain signal. Methods of calculating an angular speed of a rotary component are also provided.