Abstract: In order to test and debug the performance of servo loading controller, a hardware-in-the-loop simulation system (HILSS) is established. This variable parameter HILSS consists of a servo loading controller based on virtual instrument and a simulator based on CompactRIO. Load spectrum is loaded using PI control algorithm by the controller. The simulator simulates the operation state of the actual system depending on mathematical models of servo loading system, and completes tasks as follows: modeling, command reception, dynamic simulation, and simulation results output. A series of experimental results indicate that the HILSS can simulate the actual work of servo loading system and can be used for performance verification of the controller.

Key words: Servo loading controller, Hardware-in-the-loop simulation, Virtual instrument, CompactRIO