RAMP
----


.. figure:: ../media/image1013.png
   :figwidth: 4.15625in
   :align: center 

**Purpose**

To limit the rate of change of the input signal (value per second). This component can for instance be used to limit the rate of opening or closing a valve

**Procedure** 

The input signal is limited to a maximum rate of change. Different rates are allowed for increases and decreases in the input signal.

**Parameters** 

============= ===== ==== ===== ======= =======
Parameter     input unit range default remarks
============= ===== ==== ===== ======= =======
Ramp increase real                     
Ramp decrease real                     
============= ===== ==== ===== ======= =======

**Remarks** 

None.

**Examples** 

Figure 1 presents the input and output signals for a ramp component. The thin green line represents the input signal, while the thick red line represents the output signal. The input signal is a block function. The used ‘ramp increase’ parameter is 1, that means that the maximum change per second is 1 and it takes 10 seconds to reach the required input value. The used ‘Ramp decrease’ parameter is 2; so it takes 5 seconds to change from 10 to 0.

.. figure:: ../media/image1014.png
   :figwidth: 3.5625in
   :align: center

   Input and output signals for RAMP (incr = 1, decr = 2)


.. figure:: ../media/image1015.png
   :figwidth: 2.77083in
   :align: center

   Input and output signals for RAMP (incr = 1, decr = 2)


.. include:: substitutions_control.rst