LIBRARY

Damper

Linear 1D rotational damper

This component extends from PartialCompliantWithRelativeStates

Usage

Damper(d)

Parameters:

Name	Description	Units	Default value
d	Damping constant	N.m.s/rad

Connectors

• spline_a - (Spline)

• spline_b - (Spline)

Variables

Name	Description	Units
phi_rel	Relative rotation angle between splines	rad
tau	Torque between splines	N.m
w_rel	Relative angular velocity between splines	rad/s
a_rel	Relative angular acceleration between splines	rad/s2

Behavior

Source

# Linear 1D rotational damper
component Damper
  extends PartialCompliantWithRelativeStates
  # Damping constant
  parameter d::RotationalDampingConstant
relations
  tau = d*w_rel
metadata {"JuliaSim": {"icons": {"default": "jsml://RotationalComponents/Damper.svg"}}}
end

Flattened Source

# Linear 1D rotational damper
component Damper
  spline_a = Spline() [{
    "JuliaSim": {"placement": {"icon": {"x1": -50, "y1": 450, "x2": 50, "y2": 550}}}
  }]
  spline_b = Spline() [{
    "JuliaSim": {"placement": {"icon": {"x1": 950, "y1": 450, "x2": 1050, "y2": 550}}}
  }]
  # Relative rotation angle between splines
  variable phi_rel::Angle
  # Torque between splines
  variable tau::Torque
  # Relative angular velocity between splines
  variable w_rel::AngularVelocity
  # Relative angular acceleration between splines
  variable a_rel::AngularAcceleration
  # Damping constant
  parameter d::RotationalDampingConstant
relations
  phi_rel = spline_b.phi-spline_a.phi
  spline_b.tau = tau
  spline_a.tau = -tau
  der(phi_rel) = w_rel
  der(w_rel) = a_rel
  tau = d*w_rel
metadata {"JuliaSim": {"icons": {"default": "jsml://RotationalComponents/Damper.svg"}}}
end

Test Cases

Related

• Examples

• Experiments

• Analyses

• Tests

  • TwoInertiasWithDrivingTorque