The small Simulink library includes three performance index measurements: the integral of the sequared error (ISE), the integral of the absolute value of error (IAE) and the integral of time multiplied by the absolute value of error. A example Simulink model is included to show how to use these blocks.
The model and library are saved for Simulink 6.0 (R14) and thereafter. To install, unzip the file into a folder then add this folder to MATLAB path. Then, this library should be seen from the Simulink Library Browser.