扬声器生产线终端测试-Klippel.pdf

Translated by Sound  Acoustics, Lifestyle Entertainment, Philips Consumer Lifestyle  (3/F, Philips Building, No. 12, Shihua Road, Futian Free Trade Zone, Shenzhen, China)  10 扬声器生产线终端测试 Wolfgang Klippel 德国德累斯顿科技大学 1. Introduction Testing a manufactured unit at the end of the assembly line is a critical step in the production process. Defective products or even those not matching specification limits closely enough must be separated from the functional units shipped to the customer. End of-line testing assesses not only the quality of the product, but also the stability and yield of the production process. Reliable detection of non-functional units is the primary objective of the test, but reducing the rejection rate and maximizing the output is the ultimate goal. 100% automatic testing replaces more and more subjective testing by human operators to shorten the production cycle and to improve the reproducibility and comparability of the results. However, objective measurements should provide a comprehensive assessment as sensitive as a human tester using his visual and aural senses. To fully compete with an experienced operator, the objective measurement instrument should also have learning capabilities to accumulate knowledge about physical causes of the fault. Furthermore it should be capable of being integrated in automated lines, robust in a harsh and noisy environment, cost effective and simple to use. 1. 导言  在装配线的终端测试生产出的产品（或单元）是生产流程的关键一步，必须将有缺陷或者那些不 符合规格上下限的产品要和发货给客户的功能齐全的分开。产线终端测试不仅要评价产品质量， 也同时要评估生产流程的稳定性和合格成品率。能可靠地检测出不合格产品是测试的首要目的， 但是降低报废率和成品率最大化才是终极目标。100%全自动测试代替越来越多操作员的主观判断 以缩短生产周期和改善结果的再现性和可比较性（相似性），不管怎样，客观测试也应该能像人 工测试员通过视觉和听力一样