Antishock performance improving device and method for double-layer vibration isolating system

Abstract

The present invention is antishock performance improving device and method for double-layer vibration isolating system. The antishock performance improving device includes one semi-active vibration absorber and one vibration sensor mounted onto the protected ship power apparatus, one impact sensor mounted on ship base, one DSP controller connected to the vibration sensor and the impact sensor, one constant current source circuit connected between the DSP controller and the semi-active vibration absorber, and one DC power source connected to the constant current source circuit. The present invention has both impact resisting and vibration reducing functions, short reaction time for instantaneous impact control, and effectively raised comprehensive performance.

Description

(1) Technical field [0001] The invention relates to a vibration reduction and anti-shock device, in particular to a vibration reduction and anti-shock device for propulsion power equipment or devices on board a ship. The invention also relates to a vibration reduction and anti-shock method for propulsion power equipment or devices on board a ship. (2) Background technology [0002] The working environment of marine power equipment is that shock and vibration exist at the same time. In recent years, with the development of modern weapon technology, the explosion equivalent and impact duration of underwater explosions have increased significantly, and the hit rate has also increased. The threat to marine equipment is also more serious. Improve the impact resistance of marine power equipment It has become an urgent need to ensure the vitality of modern ships. [0003] At present, in order to improve the radiation of the vibration of marine power equipment to the hull, vibrati...

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Problems solved by technology

[0003] At present, in order to improve the radiation of the vibration of marine power equipment to the hull, vibration isolators are usually used between the equipment and the hull foundation. However, due to structural limitations in design, the vibration isolation performance of the double-layer vibration isolation system is ideal. However, the impact resistance often cannot meet the actual requirements.

At present, in order to improve the impact performance of the double-layer vibration isolation system, the method of installing limiters in the double-layer vibration isolation system is often used in actual engineering, but it also introduces new problems at the same time: if the equipment hits the limit when it is impacted The positioner will produce a secondary impact, making the impact process into a complex strong nonlinear problem, increasing the difficulty of research

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