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WOLFRAM SYSTEM MODELER

Integrator

Output the integral of the input signal with optional reset

Wolfram Language

In[1]:=

SystemModel["Modelica.Blocks.Continuous.Integrator"]

Out[1]:=

Information

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

This blocks computes output y as integral of the input u multiplied with the gain k:

    k
y = - u
    s

It might be difficult to initialize the integrator in steady state. This is discussed in the description of package Continuous.

If the reset port is enabled, then the output y is reset to set or to y_start (if the set port is not enabled), whenever the reset port has a rising edge.

Parameters (5)

k	Value: 1 Type: Real Description: Integrator gain
use_reset	Value: false Type: Boolean Description: = true, if reset port enabled
use_set	Value: false Type: Boolean Description: = true, if set port enabled and used as reinitialization value when reset
initType	Value: Init.InitialState Type: Init Description: Type of initialization (1: no init, 2: steady state, 3,4: initial output)
y_start	Value: 0 Type: Real Description: Initial or guess value of output (= state)

Connectors (4)

	u	Type: RealInput Description: Connector of Real input signal
	y	Type: RealOutput Description: Connector of Real output signal
	reset	Type: BooleanInput Description: Optional connector of reset signal
	set	Type: RealInput Description: Optional connector of set signal

Used in Examples (10)

	PID_Controller Modelica.Blocks.Examples Demonstrates the usage of a Continuous.LimPID controller
	SlewRateLimiter Modelica.Blocks.Examples Demonstrate usage of Nonlinear.SlewRateLimiter
	SinCosEncoder Modelica.Blocks.Examples Evaluation of a sinusoidal encoder
	DemonstrateLightning Modelica.Electrical.Analog.Examples Demonstrate trajectory of lightning current
	BatteryDischargeCharge Modelica.Electrical.Batteries.Examples Discharge and charge idealized battery
	SuperCapDischargeCharge Modelica.Electrical.Batteries.Examples Discharge and charge idealized supercap
	CCCVcharging Modelica.Electrical.Batteries.Examples Charge a battery with constant current - constant voltage characteristic
	CCCV_Cell Modelica.Electrical.Batteries.Examples Charge a cell with constant current - constant voltage characteristic
	CCCV_CellRC Modelica.Electrical.Batteries.Examples Charge a transient cell with constant current - constant voltage characteristic
	ThreePhaseTwoLevel_PWM Modelica.Electrical.PowerConverters.Examples.DCAC.PolyphaseTwoLevel Test of pulse width modulation methods

Used in Components (6)

	PID Modelica.Blocks.Continuous PID controller in additive description form
	LimPID Modelica.Blocks.Continuous P, PI, PD, and PID controller with limited output, anti-windup compensation, setpoint weighting and optional feed-forward
	CylinderAirCharge Modelica.Clocked.Examples.Systems.Utilities.ComponentsThrottleControl Integrates the air mass flow into a cylinder. After the charge for one cylinder is complete, resets the mass to 0.
	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
	SinCosEvaluation Modelica.Electrical.Machines.Utilities Evaluation of the signals of a sin-cos-resolver