Heterogeneous and Non-linear Modeling in SystemC-AMS.
Ken Caluwaerts, Dimitri Galayko · 2008
This contribution presents a SystemC–AMS model of a mixed non-linear, strongly coupled and multidomain electromechanical system designed to scavenge the energy of ambient vibrations and to generate an electrical supply for an embedded microsystem. The system operates in three domains: purely mechanical (the resonator), coupled electromechanical (electrostatic transducer associated with the moving mass) and electrical circuit, including switches, diodes and linear electrical components with varying parameters. The modeling difficulties related with the non-linear discontinuous behavior of the system and with the limitations of SystemC–AMS are resolved by simultaneous use of the two modeling domains available in SystemC–AMS: the one allowing SDF (Synchronous Data Flow) modeling and the one allowing LIN ELEC (linear electrical) circuit analysis. The modeling results are compared with VHDL–AMS and Matlab Simulink models.