WOLFRAM SYSTEM MODELER

Feedback

Output difference between commanded and feedback input

Wolfram Language

In[1]:=

SystemModel["Modelica.Blocks.Math.Feedback"]

Out[1]:=

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

This blocks computes output y as difference of the commanded input u1 and the feedback input u2:

y = u1 - u2;

Example:

   parameter:   n = 2

results in the following equations:

   y = u1 - u2

Connectors (3)

	u1	Type: RealInput Description: Commanded input
	u2	Type: RealInput Description: Feedback input
	y	Type: RealOutput Description: 'output Real' as connector

Type: RealInput

Description: Commanded input

Type: RealInput

Description: Feedback input

Type: RealOutput

Description: 'output Real' as connector

Used in Examples (31)

	InverseModel Modelica.Blocks.Examples Demonstrates the construction of an inverse model
	SinCosEncoder Modelica.Blocks.Examples Evaluation of a sinusoidal encoder
	UniformNoiseProperties Modelica.Blocks.Examples.Noise Demonstrates the computation of properties for uniformly distributed noise
	NormalNoiseProperties Modelica.Blocks.Examples.Noise Demonstrates the computation of properties for normally distributed noise
	Continuous Modelica.Clocked.Examples.SimpleControlledDrive Simple controlled drive with continuous controller
	ClockedWithDiscreteTextbookController Modelica.Clocked.Examples.SimpleControlledDrive Simple controlled drive with discrete textbook controller (period is not used in the controller)
	ClockedWithDiscreteController Modelica.Clocked.Examples.SimpleControlledDrive Simple controlled drive with discrete controller (period is used in the controller)
	ExactlyClockedWithDiscreteController Modelica.Clocked.Examples.SimpleControlledDrive Simple controlled drive with discrete controller and exact periodic clocks (period is used in the controller)
	ClockedWithDiscretizedContinuousController Modelica.Clocked.Examples.SimpleControlledDrive Simple controlled drive with discretized continuous-time controller
	ClockedWith_AD_DA_Effects Modelica.Clocked.Examples.SimpleControlledDrive Simple controlled drive with discrete controller and simulated AD and DA effects
	Continuous Modelica.Clocked.Examples.CascadeControlledDrive Drive with continuous-time cascade controller
	SubClocked Modelica.Clocked.Examples.CascadeControlledDrive Drive with clocked cascade controller where clocks are defined with sub-sampling and partitions with super-sampling
	SuperSampled Modelica.Clocked.Examples.CascadeControlledDrive Drive with clocked cascade controller where fastest partition is defined with a clock and slower partition is defined with super-sampling
	AbsoluteClocks Modelica.Clocked.Examples.CascadeControlledDrive Drive with clocked cascade controller where all partitions are defined with exact (integer) clock that need to be compatible to each other
	ControlledMixingUnit Modelica.Clocked.Examples.Systems Simple example of a mixing unit where a (discretized) nonlinear inverse plant model is used as feedforward controller
	MixingUnitWithContinuousControl Modelica.Clocked.Examples.Systems.Utilities.ComponentsMixingUnit Simple example of a mixing unit where a (continuous) nonlinear inverse plant model is used as feedforward controller
	Sample3 Modelica.Clocked.Examples.Elementary.RealSignals Example of a Sample block for Real signals with direct feed-through in the continuous-time and the clocked partition
	IMC_withLosses Modelica.Electrical.Machines.Examples.InductionMachines Test example: InductionMachineSquirrelCage with losses
	TestSensors Modelica.Electrical.Polyphase.Examples
	TestSensors Modelica.Electrical.QuasiStatic.Polyphase.Examples
	IMC_DOL_Polyphase Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.InductionMachines.ComparisonPolyphase Direct on line start of polyphase induction machine with squirrel cage
	IMS_Start_Polyphase Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.InductionMachines.ComparisonPolyphase Starting of polyphase induction machine with slip rings
	IMC_withLosses Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.InductionMachines Induction machine with squirrel cage and losses
	SMPM_Inverter_Polyphase Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.SynchronousMachines.ComparisonPolyphase Starting of polyphase permanent magnet synchronous machine with inverter
	SMEE_Generator_Polyphase Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.SynchronousMachines.ComparisonPolyphase Electrical excited polyphase synchronous machine operating as generator
	SMR_Inverter_Polyphase Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.SynchronousMachines.ComparisonPolyphase Starting of polyphase synchronous reluctance machine with inverter
	LinearInductor Modelica.Magnetic.QuasiStatic.FluxTubes.Examples Linear inductor with ferromagnetic core
	NonLinearInductor Modelica.Magnetic.QuasiStatic.FluxTubes.Examples Non linear inductor with ferromagnetic core
	IMC_withLosses Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines Induction machine with squirrel cage and losses
	SimpleGearShift Modelica.Mechanics.Rotational.Examples Simple Gearshift
	DrumBoiler Modelica.Fluid.Examples.DrumBoiler Complete drum boiler model, including evaporator and supplementary components

Used in Components (6)

	Controller Modelica.Blocks.Examples.Noise.Utilities.Parts Simple position controller for actuator
	LimitedPI Modelica.Electrical.Machines.Examples.ControlledDCDrives.Utilities Limited PI-controller with anti-windup and feed-forward
	IdealDcDc Modelica.Electrical.Machines.Examples.ControlledDCDrives.Utilities Ideal DC-DC inverter
	DQCurrentController Modelica.Electrical.Machines.Utilities Current controller in dq coordinate system
	SinCosEvaluation Modelica.Electrical.Machines.Utilities Evaluation of the signals of a sin-cos-resolver
	Controller Modelica.Mechanics.MultiBody.Examples.Systems.RobotR3.Utilities P-PI cascade controller for one axis

Enable JavaScript to interact with content and submit forms on Wolfram websites. Learn how »