classSignalDCMotor

Signal DC Motor

Extends from Servomechanisms.Utilities.IconName, Servomechanisms.Utilities.MotorIcon (This icon will be removed in future Modelica versions.).

Information

General

This is the model of a permanent magnet DC motor, one of the most common electromechanical actuator with caractheristics as low inductance and low friction.

Implementation

SignalDCMotor is based upon the mathematical model of a permanent magnet dc motor. Using elements from MSL the model was developed to represent the mathematical equations:
dcmotorequation.png

Notes

  • The behavior of the voltage source is given by a real input (for example a real source block could be connected as an input, see Modelica.Blocks.Sources ).
  • This model is linear
  • All the parameters and variables are in SI units
  • Has angle and speed sensors as real outputs .

Example

An example of usage with step input, inertial load and default parameters:

signaldcmotor1.png

Results:

signaldcmotor2.png

See also

Servomechanisms.Electrical.IdealDCMotor
Servomechanisms.Electrical.DCMotor

Parameters

TypeNameDefaultDescription
SI.ResistanceR0.128Armature Resistance
SI.InductanceL0.000062Armature Inductance
SI.ElectricalTorqueConstantkt0.0305Torque Constant
SI.InertiaJ0.000121Rotor Inertia
SI.RotationalDampingConstantb0Damping Factor

Connectors

TypeNameDefaultDescription
Modelica.Mechanics.Rotational.Interfaces.Flange_bflange_b
Modelica.Blocks.Interfaces.RealInputu
Modelica.Blocks.Interfaces.RealOutputangle
Modelica.Blocks.Interfaces.RealOutputspeed

Components

TypeNameDefaultDescription
Modelica.Electrical.Analog.Sources.SignalVoltagesignalVoltage
Modelica.Electrical.Analog.Basic.Resistorresistor
Modelica.Electrical.Analog.Basic.Inductorinductor
Modelica.Electrical.Analog.Basic.Groundground
Modelica.Electrical.Analog.Basic.RotationalEMFemf
Modelica.Mechanics.Rotational.Components.Inertiainertia
Modelica.Mechanics.Rotational.Components.Damperdamper
Modelica.Mechanics.Rotational.Components.Fixedfixed
Modelica.Mechanics.Rotational.Sensors.AngleSensoranglesensor
Modelica.Mechanics.Rotational.Sensors.SpeedSensorspeedsensor