Modeling for heterogeneous objects based on X language: A modeling method of algorithm-hardware

With the development of system engineering and related technology, modeling and simulation of complex systems need to include many disciplines, modeling languages, simulation environments, etc. By using unified modeling language to build models, barriers among different fields can be broken; the efficiency of model integration can be improved. Generally, a complex system contains some integrated circuit modules, which can be used for control or calculation of the system. Compared with system model, integrated circuit model is more fine-grained and lower-level and contains logic for control and algorithms. Thus, a method that modeling integrated circuit by unified modeling language is necessary. In this paper, a unified modeling language is introduced, called X language, and a modeling method of algorithm-hardware based on the X language is proposed. First of all, the hardware characteristics of the Kalman filter algorithm are extracted by analyzing the algorithm. Second, X language models are built to describe the algorithm-hardware. Then, the X language models are converted to Very-High-Speed Integrated Circuit Hardware Description Language (VHDL). Finally, the algorithm-hardware models are simulated and verified. The results show that the algorithm-hardware modeling method based on X language is feasible.