FMI3.xml

<?xml version="1.0" encoding="UTF-8"?>
<fmiModelDescription
  fmiVersion="3.0"
  modelName="BouncingBall"
  description="This model calculates the trajectory, over time, of a ball dropped from a height of 1 m"
  generationTool="Reference FMUs (development build)"
  instantiationToken="{1AE5E10D-9521-4DE3-80B9-D0EAAA7D5AF1}">

  <ModelExchange
    modelIdentifier="BouncingBall"
    canGetAndSetFMUState="true"
    canSerializeFMUState="true"/>

  <CoSimulation
    modelIdentifier="BouncingBall"
    canGetAndSetFMUState="true"
    canSerializeFMUState="true"
    canHandleVariableCommunicationStepSize="true"
    providesIntermediateUpdate="true"
    mightReturnEarlyFromDoStep="true"
    canReturnEarlyAfterIntermediateUpdate="true"
    fixedInternalStepSize="1e-3"
    hasEventMode="true"/>

  <UnitDefinitions>
    <Unit name="m">
      <BaseUnit m="1"/>
      <DisplayUnit name="ft" factor="3.280839895"/>
    </Unit>
    <Unit name="m/s">
      <BaseUnit m="1" s="-1"/>
    </Unit>
    <Unit name="m/s2">
      <BaseUnit m="1" s="-2"/>
    </Unit>
  </UnitDefinitions>

  <TypeDefinitions>
    <Float64Type name="Position" quantity="Position" unit="m"/>
    <Float64Type name="Velocity" quantity="Velocity" unit="m/s"/>
    <Float64Type name="Acceleration" quantity="Acceleration" unit="m/s2"/>
  </TypeDefinitions>

  <LogCategories>
    <Category name="logEvents" description="Log events"/>
    <Category name="logStatusError" description="Log error messages"/>
  </LogCategories>

  <DefaultExperiment startTime="0" stopTime="3" stepSize="1e-2"/>

  <ModelVariables>
    <Float64 name="time" valueReference="0" causality="independent" variability="continuous" description="Simulation time"/>
    <Float64 name="h" valueReference="1" causality="output" variability="continuous" initial="exact" declaredType="Position" start="1" reinit="true" description="Position of the ball" intermediateUpdate="true">
      <Alias name="h_ft" description="Position in feet" displayUnit="ft"/>
    </Float64>
    <Float64 name="der(h)" valueReference="2" causality="local" variability="continuous" initial="calculated" declaredType="Velocity" derivative="1" description="Derivative of h"/>
    <Float64 name="v" valueReference="3" causality="output" variability="continuous" initial="exact" declaredType="Velocity" start="0" reinit="true" description="Velocity of the ball" intermediateUpdate="true"/>
    <Float64 name="der(v)" valueReference="4" causality="local" variability="continuous" initial="calculated" declaredType="Acceleration" derivative="3" description="Derivative of v"/>
    <Float64 name="g" valueReference="5" causality="parameter" variability="fixed" initial="exact" declaredType="Acceleration" start="-9.81" description="Gravity acting on the ball"/>
    <Float64 name="e" valueReference="6" causality="parameter" variability="tunable" initial="exact" start="0.7" min="0.5" max="1" description="Coefficient of restitution"/>
    <Float64 name="v_min" valueReference="7" variability="constant" declaredType="Velocity" start="0.1" description="Velocity below which the ball stops bouncing"/>
  </ModelVariables>

  <ModelStructure>
    <Output valueReference="1" dependencies=""/>
    <Output valueReference="3" dependencies=""/>
    <ContinuousStateDerivative valueReference="2" dependencies="3" dependenciesKind="constant"/>
    <ContinuousStateDerivative valueReference="4" dependencies="5" dependenciesKind="constant"/>
    <InitialUnknown valueReference="2" dependencies="3" dependenciesKind="constant"/>
    <InitialUnknown valueReference="4" dependencies="5" dependenciesKind="constant"/>
    <EventIndicator valueReference="1"/>
  </ModelStructure>

</fmiModelDescription>