Abstract
This paper deals with virtual HWIL simulation system of a hydraulic excavator using DSP. Hydraulic excavator consists of a complex hydraulic circuits and attachments, which causes the implementation of HWIL simulation system very hard. Hydraulic circuits are realized on DSP and attachments are on main CPUthrough parallel processing algorithms. Through menu the user can set his input parameters for design objectives. Utilizing the datafile of simulation results, the 3D animation can be displayed on graphic monitor. To revival the driver's feeling a joystick has been interfaced with virtual HWIL simulation system as an external input device. The results of virtual HWIL simulation are the same as those of full software simulation and experiments.
