A compiler for control systems simulation

The paper describes a compiler for control systems simulation, which is included in the interactive program package for analysis and design of control systems ANA and enables a block oriented universal computer simulation (UNICUS). By means of general blocks and analog computer the concept of ANA can be extended to nonlinear and time variable systems. Analog computer and real process included in the simulation require the real time simulation. Due to the concept of UNICUS the simulation is in spite of its generality as fast as a simulation in FORTRAN can be. For off line applications the optimization is available. The output of the simulation is in the format of ANA data base and can be processed by ANA. UNICUS is written in a standard FORTRAN and can be run on every computer while interpreter (written in FORTRAN too) is implemented on PDP 11/34 computer with RT 11 operating system.