Six-freedom-platform electric cylinder health assessment method based on sub-signal trend analysis

Abstract

The invention discloses a six-degree-of-freedom platform electric cylinder health assessment method based on sub-signal trend analysis. The method comprises the following steps: collecting data of voltage, current, temperature and vibration of an electric cylinder in four states of good state, preliminary damage, fault development and about failure as a data set; inputting the data set into the adjusted SSTA algorithm for feature extraction; inputting the extracted features into an SVM (Support Vector Machine) for training to obtain a trained neural network; and during startup and shutdown, the electric cylinder runs a vertical lifting action and collects data of the electric cylinder, and health state evaluation is performed on the collected data of the electric cylinder by using the trained neural network. According to the method, the SSTA algorithm is adjusted, so that the algorithm which can only be used under the vibration signal of the rotating machine originally can also be suitable for non-vibration data under the environment of a flight simulator.

Description

technical field [0001] The invention relates to the technical field of flight simulators, in particular to a six-free platform electric cylinder health assessment method based on sub-signal trend analysis. Background technique [0002] As an important training facility for pilots, flight simulators require extremely high work intensity and availability. Their single-day working hours are often close to 20 hours, and they need the ability to be ready for tasks at any time. The electric cylinder is the most important moving part in the dynamic simulation subsystem of the flight simulator, and its running state is directly related to the pilot's training effect and the overall reliability of the system. However, the existing electric cylinders mainly rely on regular maintenance to ensure the ability of the electric cylinders to complete their tasks, and repairs and replacements are only carried out when the electric cylinders have obvious failures. This method is difficult to ...

AI Technical Summary

Problems solved by technology

However, the existing electric cylinders mainly rely on regular maintenance to ensure the ability of the electric cylinder to complete the task, and only when the electric cylinder has obvious failures will it be repaired and replaced.

This method is difficult to guarantee the reliability and safety of the electric cylinder in the flight simulator task, and it is easy to affect the completion of the task goal and even cause the loss of personnel and property

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