Aircraft Actuator Redundant Position Sensing

The patent applies local quality by implementing redundancy specifically in the position sensing subsystem rather than throughout the entire actuator system. Two independent position sensors (first and second sensors) are installed to monitor the mechanical member position, with each sensor providing backup capability for the other. This localized redundancy enhances reliability of position measurement without unnecessarily complicating other parts of the actuator system.

The patent implements feedback through a control circuit that continuously receives position signals from both sensors, compares their outputs, and uses this feedback to detect faults. When the control circuit detects a discrepancy between the two sensor readings beyond a predetermined threshold, it generates a fault signal. This feedback mechanism enables real-time monitoring and fault detection, improving reliability while maintaining manageable system complexity.

The patent applies partial or excessive action by using two position sensors with resolution equal to or greater than what would be required if only one sensor were used. This provides excessive measurement capability that enables both high precision position control and fault detection through comparison of the two sensor readings. The redundant sensing capacity ensures measurement precision is maintained even when one sensor degrades or fails.

The patent implements beforehand cushioning by pre-installing redundant position sensors that can compensate for potential failures before they occur. The dual-sensor configuration provides a safety buffer against measurement errors, ensuring that if one sensor fails or drifts, the other can maintain accurate position measurement. This preemptive redundancy cushions against future reliability issues without requiring complex real-time correction mechanisms.