Signal processing system for vehicular acceleration sensor

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123416, 123492, 123494, G06F 300, G06F 15353, F02D 4110

Patent

active

048435554

ABSTRACT:
Herein disclosed is a signal processing system for a motor vehicle with high responsiveness to the will of a driver. The output voltage of an acceleration sensor using a potentiometer is converted into a digital value by an analog-digital converter. The nonlinearity of the output voltage is corrected by polynominally calculating the digital value. This digital value is controlled by a central processing unit which processes the digital value to generate an acceleration signal having a linear relationship to the changes in the resistance of the potentiometer during actuation of an accelerator. The central processing unit further includes a memory for storing the acceleration signal at an idling position to determine a calibrated acceleration signal using a ratio of an actual acceleration signal obtained from the accelerator pedal to the stored value thereof.

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J. Stoer and R. Bulirsch, Introduction to Numerical Analysis, 1980, by Springer-Verlag, New York, Inc., pp. 37-72.

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