【 Weak current College 】 and speaker FMEA related several definitions---Power By 【 China power house network 】

1, speakers, the definition of FMEA

Speaker FMEA is a guarantee to the extent possible and fully consider the various speakers potential failure mode and cause of the technology, the scope of the assessment not only limited to speaker unit itself, including the associated speaker components. FMEA technology consists of 2 parts, and design the associated called design FMEA (DFMEA), and process-related called process FMEA (PFMEA).

In particular, many people will process only understood as speaker of the manufacturing process, it is not comprehensive. Process shall include speaker parts into the factory inspection and speaker unit factory inspection process, possibly including warehousing and transport.

2. potential failure modes

Speaker DFMEA potential failure mode in refers to the speaker or speakers possible parts does not meet the design intent of the failure of representation, it may be a higher level system of potential failure causes, or may be lower than its level of components or raw materials potential failure consequences.

Speaker PFMEA potential failure mode in refers to a process that might occur in the process requirements is not met or the design intent of the failure of representation, it can be caused by the downstream process or speakers of the causes of potential failure or upstream processes potential failure consequences.

3. potential failure consequences

Speaker DFMEA's potential failure consequences mean failure mode effect on speakers.

4. potential failure causes

Speakers of potential failure was caused by a failure of the sound.

Potential means that failure may occur, but not 100% sure. Evaluation of the possibility of quantitative indicators is needed — — frequency to define.