This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Signal Processing for Error Reduction in a Hot-Wire Air Flow Sensor
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 23, 1998 by SAE International in United States
Annotation ability available
The hot-wire(H/W) element of an air flow sensor has a tendency to indicate lower than actual flow rate when subjected to large-amplitude oscillatory flow. First, the causes for this measurement error is investigated and a new dynamic model for H/W is proposed. The dynamic model is a combination of the static non-linearity output characteristic of the H/W element and the dynamic response of the H/W element. Second, a signal processing method is developed to correct the measurement error of the H/W by inversing the proposed H/W dynamic model. The result shows that by using this signal processing method, the measurement error of the H/W is reduced.
|Technical Paper||Mass Air Flow Meter-Design and Application|
|Technical Paper||Breakthrough in Reverse Flow Detection - A New Mass Air Flow Meter Using Micro Silicon Technology|
CitationKowatari, T., Arai, N., and Kobayashi, C., "Signal Processing for Error Reduction in a Hot-Wire Air Flow Sensor," SAE Technical Paper 980265, 1998, https://doi.org/10.4271/980265.
- Arai N. et al. Advanced Design for Bypass Type of Hot Wire Air Flow Meter SAE Technical Paper Series # 900259
- Nishimura Y. et al. A Hot Wire Air Flow Meter for Intake Air Flow Measurement SAE Technical Paper Series # 890301
- Follmer W. C. Frequency Domain Characterization of Mass Air Flow Sensors SAE Technical Paper Series # 880561
- Ziesmer D. A. et al. Frequency Domain Characterization of Mass Airflow Sensors SAE Technical Paper Series # 930325