一种空间机器人用复杂末端执行装置的可靠性验证方法

One Test Method for Reliability Validation of Complex Space Robot End Effector

对空间机器人用末端执行装置的功能展开分析,确定表征产品功能的可靠性特征参数和分布类型,提出一种可靠性试验验证方法。结合空间站机械臂末端执行器给出具体应用验证,包括产品分析、可靠性模型的建立、特征量和分布类型的确定、样本量的选取和故障判据等内容,为其他复杂空间产品的可靠性验证提供思路。该验证方法基于计量型可靠性试验的基本思路,通过极小的样本量完成产品的可靠性验证,大幅缩减研制经费,降低科研成本。

The functions of space robot end effector are analyzed,and the reliability characteristic parameters and distribution types of the effector functions are determined.Based on the obtained results,a test method for the reliability validation of complex space robot end effector is proposed.The specific reliability validation in conjunction with the manipulator end effector of China Space Station is carried out,including the product analysis,the reliability model establishment,the determination of characteristic parameters and distribution types,the sample number selection,and the fault criteria,which provides ideas for the reliability validation of other complex space products.The validation method is based on the basic idea of metrological type reliability test,and completes the reliability validation only with a very small number of samples,which greatly saves the development costs and reduces the scientific research costs.