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Design concept of precise angle limit vibration isolation system
August 14, 2013 source: navigation instruments Author:
Design concept of precise angle limit vibration isolation system

The precision angle limiting vibration isolation system (hereinafter referred to as angle limiting vibration isolation system) was originally mainly used for vibration isolation of gyroscope and other electronic equipment. With the development of precision measurement and control technology, the high-speed mobility of electronic equipment carrier and the strong impact of weapon launch, the excitation level of electronic equipment is increasing day by day. For example, the root mean square acceleration of random vibration of an electronic device has reached 20g above. Therefore, in addition to improving the anti vibration and anti shock characteristics of all kinds of electronic equipment, it is an urgent task to equip them with angle limiting vibration isolation system which has good vibration isolation effect and can limit the angle within the allowable accuracy range.

? Classification of angle limited vibration isolation system

This kind of vibration isolation system usually consists of vibration isolator and angle limiter. According to the technical and tactical requirements of carrier characteristics and use environment, it can be divided into three categories.

? Static angle limiting vibration isolation system

Optical and electronic equipment does not work during transportation, but vibration isolation system must be used for vibration isolation and buffering to ensure the safety of electronic equipment during transportation. The main technical and tactical indicators are as follows:

? Dynamic angle limiting vibration isolation system

The second type of system is mainly used in ships, aircraft and other carriers of electronic equipment. Such electronic equipment must operate while the vehicle is in operation. The dynamic angle limit vibration isolation system is composed of vibration isolation system and angle limiter system

① The vibration isolation system must be a decoupling system and can effectively insulate and cushion the electronic equipment;

③ Such systems shall be able to meet all environmental requirements of electronic equipment.

? Dynamic angle limiting vibration isolation system with strong impact resistance

The third kind of dynamic precise positioning vibration isolation system is mainly used in the vibration isolation and angle limiting device of electronic equipment on the carrier of intelligent bomb or gun launched UAV. This kind of vibration isolation system should not only meet the two basic requirements of the second type vibration isolation system, but also ensure that the electronic equipment can withstand the strong impact when the carrier is launched.

? This kind of vibration isolation system can be divided into two types

A Class I is that electronic equipment can meet the requirements of vibration isolation and buffering under the condition of rigid installation, such as gyroscope, infinite radio, etc. However, when the carrier weapon is launched, the optoelectronic equipment cannot resist the strong impact and fails.

A Design concept of dynamic angle limiting vibration isolation system with strong impact resistance

① The launch of carrier weapon is controlled by itself, so the time of strong shock, the peak value and duration of shock pulse are determined > And the time interval between pulses / It is predictable;

② The structural strength of the existing electronic equipment can meet the electrical performance (including bumping) of electronic equipment under non strong impact conditions )

③ On the basis of meeting the above two conditions, the bottom plate of t An additional buffer system which can switch automatically is added, which is similar to static angle limit by adding a strong impact buffer system and a static angle limiter.

Under normal conditions, the static angle limiter handle A At the same time, when the base plate is locked, the system will release a strong impact command with the base plate. After the strong shock, the additional buffer system which can be switched automatically will recover to lock state immediately to ensure the working time of photoelectric equipment before the next launch.

The engineering application demand of precision angular limit vibration isolation system is increasingly urgent, but there is no standard on how to design, test and evaluate in the previous data. We hope that the colleagues will make joint efforts to improve it.