THE MULTIPLE LOAD METHOD FOR MEASURING THE SOURCE CHARACTERISTICS OF TIME-VARIANT SOURCES

A new measurement method, the multiple load method, for determining the source characteristics of linear time-variant sources is presented. The results of this measurement method are compared to the results of the two-load method for a linear time-invariant source. The measurement methods are tested on a modified compressor. The source characteristics measured by using the multiple load method gave a good prediction of the pressure at the outlet of a compressor. The result was better when using the multiple load method than when using the two-load method. Different methods have been used to study and limit the errors occurring in the measurement and calculation of the source characteristics. © 1991.