PS Gain

Multiply input physical signal by constant

expand all in page
  • Library:

  • Simscape / Foundation Library / Physical Signals / Functions

  • PS Gain block

Description

The PS Gain block performs element-wise multiplication of the input physical signal by a constant value (gain). You specify the gain as the Gain parameter value and unit.

The input signal value is multiplied by the value of the Gain parameter.

The signal unit at the output port is determined by unit propagation rules. For example, if the input signal is in N and the Gain parameter unit is m, then the output physical signal has the unit of N*m. For more information, see Physical Signal Unit Propagation.

Ports

Input

expand all

Input physical signal.

The port name is not visible in the block icon, but you can see this name in the underlying source file (accessible by clicking the Source code link in the block dialog box).

Output

expand all

Output physical signal.

The port name is not visible in the block icon, but you can see this name in the underlying source file (accessible by clicking the Source code link in the block dialog box).

Parameters

expand all

The multiplication coefficient. The first edit box represents the value of the coefficient. You can specify both positive and negative values.

The second combo box represents the unit of the multiplication coefficient. By default, the unit is 1 (unitless), which means that the output signal at port O has the same unit as the input signal. If you specify a different unit for the Gain parameter, then the signal unit at the output port O is the input signal unit multiplied by the unit of the Gain parameter. You can select a unit from the drop-down list or type the desired unit name, such as rpm, or a valid expression, such as rad/s. For more information and a list of unit abbreviations, see How to Specify Units in Block Dialogs and Unit Definitions.

Model Examples

Nonlinear Inductor

Nonlinear Inductor

An implementation of a nonlinear inductor where the inductance depends on the current. For best numerical efficiency, the underlying behavior is defined in terms of a current-dependent flux. In order to differentiate the flux to get voltage, a magnetizing lag is included. Simulation results are relatively insensitive to this lag provided that it is at least an order of magnitude faster than the fastest frequency of interest. Parameters for the source and lag are defined in the MATLAB® workspace so that the expected voltage can be calculated analytically.

Solenoid

Solenoid

A solenoid with a spring return. The solenoid is modeled as an inductance whose value L depends on the plunger position x. The back emf for a time-varying inductance is given by:

Compatibility Considerations

expand all

Behavior changed in R2019a

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

See Also

| | | |

Topics

Introduced in R2007a

Simscape Documentation

Support