MATLAB: How to define units for the physical signal output of the SimScape ‘Lookup table’ blocks

lookupmkssiSimscapetableunits

I have Lookup table block which has 'temperature' as input and 'heat capacity' as output. I want to define units for the physical signal output of my lookup table.

I would also like to define the units of physical signal globally.

Best Answer

The SimScape lookup table cannot directly define the units of the output signal. Instead, the block that accepts the signal from the lookup table will define it. It will use the base unit of the type needed typically MKS). For example, if the block receiving the signal expects a temperature, it will assign the input signal as having the units of K.

The global settings for SimScape units are not stored on a per model basis. They are stored in the pm_units.m file located at $MATLABROOT\toolbox\physmod\unit\manager\unit_manager.

As you can see in this file, the default units are MKS, and all others are derived from these base units. For more information, please see the documentation for Unit Definitions:

https://www.mathworks.com/help/physmod/simscape/ug/unit-definitions.html

Related Solutions

MATLAB: How to selectively hide parameters from the block dialog for a custom Simscape component

You should be able to control parameter access by using two different parameter sections, one for the visible parameters and a second for the private ones specified with "(Access=private)".

For example, the parameter sections on your custom Simscape component could look similar to the following code snippet:

parameters 
Param2 = {<values>, 'units'};
end 
parameters (Access = private)
Param1 = {<values>, 'units'};
Param3 = {<values>, 'units'}; 
end

This is shown as an example in the Case Sensitivity section of the following documentation:

https://www.mathworks.com/help/physmod/simscape/lang/declare-component-parameters.html

MATLAB: How to use PS Lookup Table

Yes, it is possible to use PS Lookup Table in an electrical circuit. Refer to the following link to know more about PS Lookup Table:

https://in.mathworks.com/help/physmod/simscape/ref/pslookuptable1d.html

If you do want to connect Simulink Lookup Table to an electrical circuit, first connect the PS-Simulink Converter block to the electrical circuit and then connect Simulink Lookup Table block to it.

Best Answer

Related Solutions

MATLAB: How to selectively hide parameters from the block dialog for a custom Simscape component

MATLAB: How to use PS Lookup Table

Related Question