This paper aims at the above-mentioned problem and extends the original DPM architecture by adding two modules,namely,the system workload detecting and policy optimizing modules.

This paper introduces briefly two ways of diesel locomotive load-test :water-resistance load-test and dry resistance load-test,and compares their advantages and disadvantages,It also describes the current situation and development of diesel locomotive load-test.

Method of load continuous regulation by PLC in dry-load test;

This paper introduces the contents of overall test of inverter and the method for controlling and connecting the units\'back-to-back test,and expounds the application effect of back-to-back test of inverter units in overall load test.