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Bungee Jump: Simulate Multibody Systems

CONTENTS:

ˇ Introduction	ˇ Automatic 3D Animation
ˇ Instant Plotting	ˇ Change Parameters

Introduction

This model shows a model inverse controller that is used to control a hoist crane.

Automatic 3D Animation

Multibody systems have visualizers to show what a real-world system would look like.

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To simulate the model and view a 3D animation of it, follow the steps below:

Click the $\"\"/$ button in the top-right corner.
When the build is finished, click the Simulate button $\"\"/$ .
Click the Animate button $\"\"/$ .
Use your mouse or trackpad to drag the animation to a good angle and zoom in with your scroll wheel or by using the trackpad. Then click the Play button to play the animation.

Instant Plotting

Explore how the crane is positioned relative to its reference position by plotting the variables LoadPosition and craneControlModel.loadPosition.

To plot a variable, mark its checkbox in the Plot tab on the left in Simulation Center.

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Change Parameters

Changing parameters for the simulation can be done rapidly in Simulation Center. Switch to the Parameters tab and enter a new value for the parameter you would like to vary. Try changing the intertia for the load, crane.body_I and see how this affects the controller.

Simulate again to see the effects of your changes.

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