Electronic control device and flow rate measurement system

A flow rate measurement system comprising:

• a flow rate measurement device assembled to an intake pipe;
• and
• an electronic control device,
• wherein the electronic control device includes
• a flow rate calculation unit that calculates a flow rate of intake air based on an output signal of the flow rate measurement device,
• a flow rate correction value calculation unit that calculates an average value, a maximum value, and a minimum value of the flow rate of the intake air, calculated by the flow rate calculation unit, during a predetermined period, and an amplitude of a signal with one or more frequencies equal to or higher than a fundamental frequency of the output signal of the flow rate measurement device and included in the output signal of the flow rate measurement device, and, using a relative position of the average value with respect to the maximum value and the minimum value, and the amplitude of the signal with one or more frequencies as parameters, calculates a correction value for the flow rate of the intake air based on calculation results, and
• a flow rate correction unit that corrects the flow rate of the intake air based on the correction value.