Method for filtering input signal afflicted with noises in electronic control device of motor vehicle, involves adding correction parameter to prior output signal value for computing actual output signal value

摘要

The method involves assigning a sequence of output signal values (Yk) to a discrete sequence of input signal values (Xk). A correction parameter (Q) is computed from an absolute value of a value difference (delta) using a polynomial correlation. Another correction parameter (R) matched with the former correction parameter is formed from the former correction parameter if the absolute value is smaller than or equal to a preset positive threshold value. The latter correction parameter is added to a prior output signal value for computing an actual output signal value. An independent claim is also included for an electronic control device for a motor vehicle, including a digital filter device.