System identification of proportional solenoid valve dynamics.

摘要: We present a system identification technique for the characterisation of linearity and dynamic response PSOL valve its corresponding electronic control unit (ECU) using bandlimited white noise, as well pseudo random "non-sum non-difference" (NSND) waveforms consisting mutually prime frequencies to mitigate effects nonlinear distortions. The parameters several transfer function models were simultaneously estimated from voltage-flow frequency gradient descent technique. Candidate assessed mean squared residual (MSR) criterion corrected Akaike information (AICc). MSR yielded 10 poles 9 zeros, while AICc simpler 5 3 zeros. Monte Carlo analysis demonstrated fragile stability MSR-selected model with respect varying parameter values within uncertainties, yet robust AICc-selected model.