Managing Electronics Validation Testing

摘要

With the ever-changing complexity of automotive electronics and the resulting complexity of hardware/software interactions, validation testing often misses key failure modes and problem areas. Often problems only are found late in a program development or as warranty returns from the field. Most validation testing is based on a statistical approximation of the expected behavior of a population. For example, if 100,000 units are going to be placed in the field, 12 units may be tested to one equivalent life to demonstrate 90% reliability with 70% confidence. The product is acceptable if all 12 units pass one equivalent life under the test conditions.