论文部分内容阅读
对卫星通信设备来说,对工程师提出了一个特殊的要求,那就是要对可靠性负责。除了上述的要在浮室中进行装配和懂填地训练工作人员之外,还须解决另一些较困难的问题:要解决一套能够承受十万小时或六年的“平均故障时间”的设备,而且这套设备在没有采用通常的备份措施的情况下去完成任务;此外,设备的体积和重量也要做到紧凑和轻巧。如果把备份作为一种可靠性的技术手段,在重量的前提下,就是不相容的;除非对隧道二极管放大器而言,因为那是不可避免的。所以应在重量和可靠性之间进行折衷考虑,例如在接收双工器这种情况下,就须牺牲一定的重量而保证所需要的可靠性。编制可靠性计划时,首先要收集大量的部件可靠性数据,然后再调整部件可靠性计划。质量保证审查员要进驻分承包商处,以便对部件和工艺过程提出独到的评价,并应慎重地对测试程序进行检查和改进。经验证明,在程序中应及早建立起系统的工作性能、重量和功率等项预算,所有设计项目都宜经过分析提出备份措施,并通过试验加以论证。在技术上认为是薄弱环节的地方,都应提出备份计划。
For satellite communications equipment, engineers have made a special request that they be accountable for their reliability. In addition to the above-mentioned staff training to be assembled in the floating room and knowledgeable to fill, there are other difficult problems to be solved: to solve a set of equipment that can withstand 100,000 hours or six years of “average downtime” , And the device does the job without taking the usual backup measures; in addition, the size and weight of the device must be compact and lightweight. Backing up as a reliable means of technology is incompatible with weight unless it is a tunnel diode amplifier because that is inevitable. Therefore, compromise should be made between the weight and the reliability. For example, in the case of receiving a duplexer, a certain weight must be sacrificed to ensure the required reliability. When preparing a reliability plan, first collect a large amount of part reliability data and then adjust the part reliability plan. QA inspectors are stationed at sub-contractor locations to provide a unique assessment of the components and processes, and test procedures should be carefully reviewed and improved. Experience has shown that in the process should be set up as early as the system performance, weight and power budget, all design projects should be analyzed and proposed backup measures, and tested to demonstrate. Where technology is considered a weak link, backup plans should be made.