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首页> 外文会议>Congress of the International Council of the Aeronautical Sciences; 20060903-08; Hamburg(DE) >RESEARCH ON RELIABILITY GROWTH TECHNOLOGY OF ELECTROMECHANICAL-HYDRAULIC SYSTEM
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RESEARCH ON RELIABILITY GROWTH TECHNOLOGY OF ELECTROMECHANICAL-HYDRAULIC SYSTEM

机译：机电液压系统可靠性增长技术研究

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摘要

Products that had carried out reliability test (reliability qualification test etc) happen many failures in use, not only the cycle of existing reliability test technology is longer cost is dearly, but also the failures can not eliminate thoroughly in use. This problem condition development of aviation and space/light engineering, and turn into attention pivot of reliability engineering field. For an example of a certain aircraft carbon wheel brake system, we study acceleration stress reliability growth technology that apply to complex electromechanical hydraulic system, the latent failures of the break system is activized at short time, and solve above question in reliability test in this paper. It is different from general test profile that is using extensively. Eneral test profile is established according to real environment stress and sequence of action to check reliability of the products in action of real environment and operation stress (main it is electric stress in static state), and test is proceeded in nor working state general. By careful analysis, we think that: failures of products occur in working process, it is of advantage to excite latency failures of the system when the reliability testing is proceeding in working state. Besides of electromechanical hydraulic system which volume and weight is larger, action time of high temperature ℃ and low temperature 55 ℃ is too short in general test profile, in which blaze action is small for inner binding of kinematics pair in engineering products, brittle failure in low temperature etc that is due to change of temperature is small, and excitation action of temperature drift in electric appliances is small, too. In which there is possibility that it keeps long time in low temperature or high temperature in actual usage, and exist possibility of celerity temperature change, bottle neck be likely to conk. So when test profile is established, it is in first position that excite latent failures and elimination potential danger. Test profile that is established for potential dangerous can answer that potential danger is eliminated in possible limiting temperature, fast temperature change, vibration etc environment stress, dynamic amplitude working stresses conditions, which can assure that application is safe and range of application for environment and operation stress is wider, there is salience acceleration effect of saving time and resource.
机译：进行了可靠性测试（可靠性鉴定测试等）的产品在使用中会发生很多故障，不仅现有可靠性测试技术的周期长，成本高昂，而且使用中无法彻底消除故障。该问题制约着航空航天与轻工技术的发展，并成为可靠性工程领域的关注重点。以某航空器碳轮刹车系统为例，研究了适用于复杂机电液压系统的加速应力可靠性增长技术，在短时间内激活了制动系统的潜在故障，解决了可靠性测试中的上述问题。 。它与广泛使用的一般测试配置文件不同。根据实际环境压力和作用顺序建立常规测试概况，以检查产品在实际环境和工作压力（主要是静态状态下的电应力）作用下的可靠性，并在非工作状态下进行测试。通过仔细分析，我们认为：产品故障是在工作过程中发生的，当可靠性测试在工作状态下进行时，激发系统的延迟故障是有利的。除了体积大，重量大的机电液压系统外，一般测试曲线中的高温℃和低温55℃的作用时间都太短，其中起火作用较小，对工程产品中的运动学对内部结合，脆性破坏等都不利。由于温度变化引起的低温等较小，并且电器中的温度漂移的激发作用也较小。在实际使用中有可能在低温或高温下保持较长时间，并且有温度变化的可能性，瓶颈可能会堵塞。因此，当建立测试配置文件时，处于潜在故障并消除潜在危险的第一位置。针对潜在危险而建立的测试配置文件可以回答在可能的极限温度，快速温度变化，振动等环境应力，动态振幅工作应力条件下消除了潜在危险，从而可以确保应用的安全性以及适用于环境和操作的范围压力更大，有显着的加速效果，节省了时间和资源。

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