Active Hydraulic Oil Pressure Measurement System as a Source of Information About the Technical Condition of the Aircraft Hydrostatic Drive
Leszek Ułanowicz
TL;DR
This paper introduces a new method to assess aircraft hydraulic systems using active pressure measurements, avoiding costly disassembly.
Contribution
A novel active pressure measurement system using a corrective hydraulic accumulator for diagnosing hydrostatic drive conditions.
Findings
Changes in the corrector's operation signal indicate wear in hydraulic components.
Pressure step response studies confirmed the system's effectiveness in diagnosing hydrostatic drives.
The method allows non-invasive and cost-effective evaluation of hydraulic system health.
Abstract
Current methods for assessing the technical condition of aircraft hydrostatic drives require disassembly of the hydraulic components and their testing on test stands. These methods are expensive and do not provide a quick assessment of their technical condition. The aim of this work is to present the possibility of using an active hydraulic fluid pressure measurement system using a corrective hydraulic accumulator to assess the technical condition of a hydrostatic drive. In the proposed method, the diagnostic information carrier is a change in the corrector’s operation (changes in the course or shape of the output signal), resulting, for example, from wear of the hydraulic pairs of precision hydraulic devices that complete the hydrostatic drive. The output signal from the active pressure measurement system is a control signal that, together with the input interference signal and the…
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Taxonomy
TopicsHydraulic and Pneumatic Systems · Engineering Diagnostics and Reliability · Advanced Measurement and Detection Methods