ITI simulation tools are used for analyzing and optimizing the dynamic behavior of fluid power components and systems. Its device-oriented model libraries of hydraulic and pneumatic components allow fast and efficient model construction based on the circuit description of the system. Typical model structures include cylinders, valves, lines, pumps, motors and accumulators.

Features built into each component model include pressure-and temperature dependent fluid properties, nonlinear dynamics and flow behavior of valves, volumetric and mechanical efficiency of actuators, complex friction and end stop models of cylinders, as well as real gas behavior of accumulators. Furthermore, user-defined components can be created graphically from basic elements.

Sample applications can be downloaded as PDF files (go to, click English, then select Fluid Power from the Applications button):

  • Modeling of hydraulic subsea control systems, including HPUs and long transmission lines.
  • Hydraulic drives for lifting and lowering of loads — comparison of different drive structures, analysis of load changes, and Investigation of stick-slip effects.
  • Position-controlled hydraulic cylinder drives — comparisation of control concepts, elastic cylinder suspension, and efficiency analysis.
  • Pneumatic handling equipment.