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Spring driven gyroscope reliability assessment method
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An elastically driven and reliable technology, applied in instrumentation, geometric CAD, calculation, etc., can solve problems such as high cost, difficult reliability, large sample test, etc.
Active Publication Date: 2017-09-22
天航长鹰(江苏)科技有限公司
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Problems solved by technology
Because the elastic drive gyroscope has the characteristics of one-time use and high cost, it is impossible to conduct a large-scale test on it, so it is difficult to directly evaluate its reliability
At present, there is no reliability evaluation method for elastically driven gyroscopes
Method used
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specific Embodiment approach 1
[0071] Specific implementation mode 1, in combination with the attached figure 1 and Specific Embodiments The method for evaluating the reliability of the elastically driven gyroscope of the present invention will be described in detail.
[0072] The reliability evaluation method of a kind of elastic driving gyroscope of the present invention, see figure 1 As shown, it includes the following steps:
[0073] Step 1: According to the functional structure analysis of the elastic drive gyroscope, the key components of the elastic drive gyroscope failure are analyzed, and the correlation transfer diagram of the elastic drive gyroscope failure is established.
[0074] The key components for failure of the elastically driven top are the electric squib and the clockwork spring of the elastically driven top.
[0075] The correlation transmission diagram of the failure of the elastically driven gyroscope includes: the failure event of the elastically driven gyroscope, the failure even...
specific Embodiment approach 2
[0123] Embodiment 2. The difference between this embodiment and the method for evaluating the reliability of the elastically driven gyroscope described in Embodiment 1 is that the parameters of the clockwork spring described in Step 3 and Step 4 are specifically:
[0124] The correction factor of the clockwork spring is 0.84;
[0125] The modulus of elasticity of described clockwork spring degenerates linearly according to time, is E (t);
[0126] The width of the clockwork spring obeys a normal distribution in is the mean value of the width of the clockwork spring, is the variance of the width of the clockwork spring;
[0127] The thickness of the clockwork spring obeys the normal distribution in is the mean value of the thickness of the clockwork spring, is the variance of the thickness of the clockwork spring;
[0128] The actual working length of the clockwork spring obeys the normal distribution in is the mean value of the actual working length of the clock...
specific Embodiment approach 3
[0130] Embodiment 3. The difference between this embodiment and the method for evaluating the reliability of the elastically driven gyro described in Embodiment 2 is that the parameters of the elastically driven gyro rotor described in steps 3 and 4 are specifically:
[0131] The moment of inertia of the elastically driven gyro rotor is constant.
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Abstract
The invention discloses a spring driven gyroscope reliability assessment method. The method comprises the following steps of: 1, establishing an ineffective correlation transitive graph of a spring driven gyroscope according to functional structure analysis of the spring driven gyroscope; 2, obtaining life distribution and reliability of an electric detonator through an accelerated life test; 3, obtaining probability density of starting time performance so as to obtain reliability of a starting time performance degradation failure event; 4, obtaining probability density of maximum rotation speed performance so as to obtain reliability of a maximum rotation speed performance degradation failure event; and 5, obtaining reliability of the spring driven gyroscope according to the ineffective correlation transitive graph of the spring driven gyroscope in the step 1. Through above steps, the reliability and reliable life of the spring driven gyroscope are obtained, and the reliable life expresses the reliability of the spring driven gyroscope. By adoption of the spring driven gyroscope reliability assessment method, the reliability and the reliable life of the spring driven gyroscope are obtained, and the spring driven gyroscope reliability assessment difficulty is solved.
Description
technical field [0001] The invention provides a method for evaluating the reliability of an elastically driven gyroscope, which belongs to the technical field of elastically driven gyroscopes. Background technique [0002] Elastically driven gyroscope: a gyroscope that uses the elastic potential energy stored in the spiral spring or clockwork spring to drive the gyroscope rotor to run at high speed. It has no gyroscope power supply, fast start-up speed, short working time, high overload resistance, one-time use, and small size. , light weight, simple structure and other characteristics, it is often used in tactical missiles and guided weapons that require small size and no gyro power supply. [0003] The spring unique to the elastic drive gyroscope is usually placed in the inner cavity of the rotor, the outer end of the spring is fixed on the gyro rotor, the inner end of the spring spring is reliably connected to the rotor shaft, and when the gyroscope is started, the inner ...
Claims
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Application Information
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