BAYESIAN DEMONSTRATION TEST METHOD WITH MIXED BETA DISTRIBUTION

• 作 者: MING Zhimao TAO Junyong CHEN Xun ZHANG Yunan
• 机 构: College of Mechatronics Engineering and Automation,National University of Defense Technology,Changsh
• 出 处: 机械工程学报（英文版）
• 发表日期: 2008年3期
• 关键词: Reliability qualification test Inheritance factor Bayesian analysis Binomial dis

A complex mechatronics system Bayesian plan of demonstration test is studied based on the mixed beta distribution. During product design and improvement various information is appropriately considered by introducing inheritance factor, moreover, the inheritance factor is thought as a random variable, and the Bayesian decision of the qualification test plan is obtained, and the correctness of a Bayesian model presented is verified. The results show that the quantity of the test is too conservative according to classical methods under small binomial samples. Although traditional Bayesian analysis can consider test information of related or similar products, it ignores differences between such products. The method has solved the above problem, furthermore, considering the requirement in many practical projects, the differences among this method, the classical method and Bayesian with beta distribution are compared according to the plan of reliability acceptance test.