关键词: 实时仿真, 复用, 解复用, 复杂机电系统

Abstract: The hardware-in-the-loop simulation plays an important role in the research of complex eletromechanical system. The number of simulation channels is limited, which can’t meet the demand of synchronize simulation for large number of signals of complex electromechanical systems. A signal multiplexing/demultiplexing algorithm is proposed, the core idea of which is as follows. Signal multiplexing algorithm which implements on FPGA of simulator, multiplexes simulation signals and send in batches by the same group simulation output channels in a simulation cycle. Signal demultiplexing algorithm restores simulation signals by synchronous clock and address seeking signals, then sends them to the actual controller. It implements on CPLD of interface-board. The simulation results show that the signal multiplexing/demultiplexing algorithm only uses the less simulation output channels to realize the synchronous interaction between large number of simulation signals and the actual controller, and it finally solves the problem of inadequate simulation channels.

Key words: real-time simulation, multiplexing, demultiplexing, complex electromechanical system