Quality of electronic products for the automotive
Why the Car need high level of quality ?
・Products related to human life：
For Example, when the brakes do not work, Fatal accident cloud occurre
・Brand：
Automotive electronics is a part of the car
Brand of high reliability
PL：product liability
・Product liabilityis the area of law in which manufacturers, distributors, suppliers, retailers, and others who makeproductsavailable to the public are held responsible for the injuries those products cause. Although the word “product” has broad connotations, product liability as an area of law is traditionally limited to products in the form of tangible persona
Manufacturer
Consumer
Environmental differences
・Automotive ：
①Temperature (low temperature, high temperature use) -10 °~ +60 ° below zero
②Humidity (high humidity, drying)
③Vibration, shock
④Dust, rain, salt water, acid rain
・Home appliances ：
Less external stress.
Maintainability and repair
・Automotive ：
After separating from the car, after repair by professional, again, attached to the car.
・Home appliances ：
Repair, maintenance is easy.
Process control of automotive products
『Thinking』
①Selection of important characteristics
②Anomaly detection system
③Fail-safe design
Required quality ：
Less １ppm failure rate
Failure of 1/1 million
①Failure mode and effects analysis
②Predict error-prone points
③Trouble cases in the past
『Methed』
④Keep process capability
①StudyControl items, conditions, frequency
②Maintenance and understanding of critical process
③Understanding of process capability
・Decide what kind inspection and documented
・Documented Control point
・Calculating（Cp、Cpk）
・Contorl byX-R Chart
SL
SU
1.33＞Cp≧1：Good
『Control change point 』
Up sensitivity of anomaly detection
Descriptive Item
Change equipment, materials, methods, measurement methods
Obscure Item
Small improvement
Seasonal variation
Control change point→Study at the Engineering Department and manufacturing unit and quality
•design review:
Adesign reviewis a milestone within a product development process whereby adesignis
evaluated against itsrequirementsin order to verify the outcomes of previous activities and I
dentify issues before committing to -and if need to be re-prioritise -further work.
The ultimate design review, if successful, therefore triggers the product launch orproduct release
『What is Abnormal？』
Cause：
Work is always different.
・Different sound, color, touch, speed
Result ：
Finished product is different
・Failure rate increases
①Cleaning at the start
②Periodic inspection③ Reporting, communication and consultation
Detects an abnormality
Challenge high quality, high reliability in Make Goods!！
