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Proportional
and Servo Hydraulics

The Automation Studio™ Hydraulics Library provides a very wide array of commonly used components in the field of mobile and industrial hydraulics to perform the control of position, force, and velocity. The library comes with ISO compliant symbols and includes simulation models for servo proportional valves, variable displacements pumps, proportional pressure regulators and flow controls. To complete system design and allow flexibility in control and interaction, the library provides a PID controller, measuring devices as well as set point generators.

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Flexible PID Control

Automation Studio™ Proportional includes a PID controller that can be preset in any required fashion with configurable gain values. Furthermore, a transfer function can be easily implemented using the provided user-friendly keypad editor.

Configure Actuator Load and Force Profiles

All forces and loads applied to cylinders and motors can be determined as a function of the position. Users can therefore enter loading scenarios in accordance with the use and geometry of an equipment which will reflect real behavior during simulation. To add more flexibility, loads can be applied by variable at any time. The emulation of complex mechanical systems and unforeseen events becomes easily accessible without creating a burden on the designer.

Load Sensing Applications

Pressure feedback can be tapped anywhere in a circuit and used for control applications. Along with configurable loading of actuators, this feature can show real systems in action.

Steering Systems

To complete the design of mobile applications, the library includes all the building blocks to create steering units. These can be controlled by the provided set point generating devices.

Extended Valve Configuration Features

The list of parameters that can be determined for proportional valves is extensive, comprehensive, and requires minimal user intervention when dealing with complex systems. By opening the valve properties dialog box, users can determine the flow characteristics for each spool position.

PID controller, measuring devices as well as set point generators

Also, using the curve editor, they can easily set the spool position vs. signal function as well as the profile of the flow characteristic. Furthermore, input signals can be scaled to comply with a specific component requirement. Proportional valves can be controlled electrically and/or hydraulically to suit mobile and industrial applications alike.

Open and Closed Loop Systems

All control loops can use signals provided by sensors or from external controllers through an OPC server or an OPC compatible CANbus server. See OPC library for details. The signals are all configured using variables and offer full flexibility to the designer. Values measured by sensors can be used in any of the Automation Studio™ control libraries. The conversion and scaling of signals can also be fully configured.

Control Devices

The library includes joysticks and steering wheels to let users modify set point values during simulation. Users can define the scale and amplitude of the set point values. It is also possible to install an actual external joystick for a more realistic interaction during simulation. To ensure complete flexibility, a set point value generator is also provided to force input values during simulation.