Method for predicting fatigue damage of fan tower in real time based on improved residual wave series method

A method for predicting fatigue damage of a fan tower in real time based on an improved residual wave series method relates to the field of fan tower fatigue damage calculation, and comprises the following steps: step 1, installing a strain sensor at a key position at the bottom of the fan tower, storing strain data once at set intervals, multiplying the strain data by an elastic modulus of a material, and converting the strain data into stress data; 2, reading stress data of a first time period, and processing a stress time history into a PV sequence consisting of a local maximum value and a local minimum value by using a peak valley criterion; according to the method, the residual wave which cannot form a complete cycle in historical data and the newly measured stress time history are connected in series, the current fatigue damage is accurately calculated, and the residual wave is stored and continuously combined with the subsequent measured stress, so that the method occupies less memory, the accuracy of