ID 原文 译文
13954 针对加速试验中产品的失效机理是否发生改变的问题,基于加速因子不变原则,研究了工程上应用较为广泛的 Weibull 寿命分布失效机理一致性的检验方法。 To identify whether the product's failure mechanism in accelerating tests is changing a testing method of failure mechanism consistency of Weibull life distribution based on the principle of acceleration factor constancy is studied.
13955 Weibull 分布转化为 I 型极值分布,进而研究极值分布尺度参数的统计检验方法,并采用尺度参数的 Ansari-Bradley 方法进行检验。 Weibull distribution is converted to I-type extreme value distribution. A method for statistical testing of the scale parameters in extreme value distribution is studied by using Ansari-Bradley method.
13956 结合 Arrhenius 加速模型,基于最小二乘法估计、回归系数的性质构造 t 统计量,实现对加速因子与分布参数的统计检验,判别失效机理发生改变的应力。 By using Arrhenius acceleration model t statistic is constructed based on the least squares method and characteristics of regression coefficients. Statistical testing of the acceleration factor and distribution parameters is implemented and the stress under which the failure mechanism will change is distinguished.
13957 仿真模型验证了所提检验方法的有效性。 Simulation results show the effectiveness of the proposed method.
13958 研究了单处理器嵌入式实时系统的多任务优先级分配方法,首先,选择截止期单调( DM) 优先级分配方法为实现航电中继系统的采集激励软件而划分的多任务分配优先级。 The multi-task priority allocation method of a real-time embedded uni-processor system is studied. Firstly, the Deadline Monotonic ( DM) priority allocation method is selected and implemented for the multiple tasks, which are classified for running the acquisition and incentive software of the avionic relay system.
13959 然后,结合 VxWorks 的优先级抢占式调度算法对该任务集进行可调度性理论分析和计算,给出了基于 VxWorks 的数据采集激励软件的一般调度设计过程。 Then, by using the preemptive priority-scheduling algorithm of VxWorks, the schedulability of the task set is theoretically analyzed and calculated. The general process of the scheduling design for the VxWorks-based data acquisition and incentive software is also given.
13960 最后,在基于该调度算法的航电中继系统上进行了数据转发实验。实验结果表明,航电中继系统转发数据的最大延迟时间不超过3. 5 ms,可实现 4 种类型数据的稳定、正确转发。 Finally, a data-forwarding experiment was performed on the avionic relay system based on the scheduling algorithm. The experimental results show that the maximum delay time for the avionic relay system to forward data does not exceed 3.5 ms, which can realize the stable and correct forwarding of 4 types of data.
13961 因此,基于 DM 优先级分配的抢占式调度算法的航电中继任务调度设计满足实时性和可靠性要求。 Therefore, the avionic-relay task scheduling design based on the preemptive scheduling algorithm of DM priority allocation can meet the real-time and reliability requirements.
13962 研究了基于事件触发的网络控制系统( NCSs) 的动态输出反馈控制( DOFC) The Dynamic Output Feedback Control ( DOFC) for Networked Control Systems ( NCSs) based on the event-triggered mechanism is studied.
13963 通过综合考虑 NCSs 中的网络诱导延迟和时序错乱的问题,建立了包含事件触发机制和 DOFC 的闭环模型。 By comprehensively considering the problems of induced network delays and timing disorders in NCSs, a closed-loop model containing the event-triggered mechanism and the DOFC is constructed.