A model structure for stationary emission models is presented. The emissions NO x , soot and opacity are separately modeled. Model inputs are the air mass flow rate, charge air pressure, intake temperature, the locati...
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A model structure for stationary emission models is presented. The emissions NO x , soot and opacity are separately modeled. Model inputs are the air mass flow rate, charge air pressure, intake temperature, the location of mass fraction burned 50% and the engine operation point. Local polynomials are trained for each operation point, defined by engine speed and injection quantity. To increase accuracy a selection algorithm of the significant regressors is presented. The local models are composed by means of weighting functions, depending on the engine operation points, to global emission models. For a rasterized operation range, the weighting can be interpreted as a linear interpolation of local models. This enables an easy implementation to common electronic control units (ECUs). Measurements from a CR-Diesel engine show the quality of the models.
A high frequency (HF) modeling method of low-voltage DC motor impedance is proposed. The model suggested is dedicated to the estimation of conducted electromagnetic interferences (EMI) within the car body and combines...
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ISBN:
(纸本)9781424416998
A high frequency (HF) modeling method of low-voltage DC motor impedance is proposed. The model suggested is dedicated to the estimation of conducted electromagnetic interferences (EMI) within the car body and combines the advantages of both an analytical and a behavioral approach. It can simulate the motor's complex impedance from the continuous up to a frequency of approximately 1 GHz. Moreover, this model takes into account the skin effect in the winding and the eddy current effect in the laminated iron core. A parametricidentification method was developed in order to improve the model.
A high frequency (HF) modeling method of low-voltage DC motor impedance is proposed. The model suggested is dedicated to the estimation of conducted electromagnetic interferences (EMI) within the car body and combines...
详细信息
ISBN:
(纸本)9781424416998
A high frequency (HF) modeling method of low-voltage DC motor impedance is proposed. The model suggested is dedicated to the estimation of conducted electromagnetic interferences (EMI) within the car body and combines the advantages of both an analytical and a behavioral approach. It can simulate the motor's complex impedance from the continuous up to a frequency of approximately 1 GHz. Moreover, this model takes into account the skin effect in the winding and the eddy current effect in the laminated iron core. A parametricidentification method was developed in order to improve the model.
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