Vibration centrifugation compound environment simulation test apparatus suitable for component product

Abstract

The invention discloses a vibration centrifugation compound environment simulation test apparatus suitable for a component product. The apparatus comprises a centrifugal machine and a vibration control system. A large arm tail end of the centrifugal machine is provided with a hydraulic shock excitation system, a piezoelectric shock excitation system and a clamp. The hydraulic shock excitation system is fixedly connected to a large arm. A shock excitation direction of the hydraulic shock excitation system is consistent with a large arm axis direction. The piezoelectric shock excitation system is connected rigidly in series. The clamp is fixedly connected to the piezoelectric shock excitation system. The piezoelectric shock excitation system and the hydraulic shock excitation system are provided with acceleration sensors. A signal output terminal of each acceleration sensor is connected to a vibration signal input terminal of a vibration control system through a collecting ring. The vibration control system is electrically connected to a power amplifier and a hydraulic driving system. The power amplifier is electrically connected to the piezoelectric shock excitation system through the collecting ring. A hydraulic driving system is connected to the hydraulic shock excitation system through the collecting ring. By using the apparatus of the invention, composite output of a vibration accelerated speed and an overload accelerated speed from a low frequency to a high frequency can be completed.

Description

technical field [0001] The invention belongs to the technical field of mechanical environmental tests, and in particular relates to a vibration-centrifugal compound environment simulation test device suitable for component products. Background technique [0002] The complex environment of high-frequency vibration, dynamic overload, temperature and impact experienced by weapons and aerospace systems during flight has complex effects on the structural strength and reliability of products, especially the combination of vibration and overload, which is the most important factor affecting the structure and function of flight products. Two environmental factors are significant. With the rapid development of weapons and aerospace, the assessment of structural strength and functional reliability of mechanisms and electronic equipment in weapons and aerospace systems has become the focus of related industries. [0003] There are two main methods of assessment. The first is to condu...

AI Technical Summary

Problems solved by technology

The first is to conduct actual flight tests. The advantage is that it can truly simulate the complex environment experienced by the flight system. However, flight tests are not only costly and long-term, but also difficult to provide strong technical support in the principle and design stages.

The second way is to conduct mechanical environment simulation tests on the ground, such as vibration tests, centrifugal tests, etc. This kind of single-factor environmental test technology is relatively mature at home and abroad, but multi-factor composite tests are difficult, especially the combination of vibration and overload. Mechanical environment test

However, on the one hand, these inventions cannot simulate the high-frequency vibration of the real flight environment. On the other hand, the volume and complexity of the excitation system are large, which is not conducive to the processing and control accuracy of the control device.

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