Identified Control Factors and Performance Metrics
Certain parameters need to be controlled independently of one another in order to test system robustness. This ensures that the system is capable of performing under extreme and varying conditions. For example, in the AC rectification test, a constant voltage and current is required while resistance and capacitance values in a parallel RC filter are varied and act as control factors.
Performance metrics are system specifications that are being evaluated in each test. Each experiment evaluates 1 or more key product specs. For example, the previously mentioned AC rectification test uses light output as its performance metric. The test is designed to verify that the amount of light emitted is not adversely affected by ripple voltage in the rectification circuit.