自動車と輸送
System Modelerを使って，車両ダイナミクス，パワートレインコントローラ，シャーシ，安全システム等を設計し，そのシミュレーションを実行します．Mathematicaと組み合わせて，制御系の設計および最適化を行います．
Coupled Clutches
By coupling clutches together, a variable structure drivetrain can be achieved. With different clutches engaged at different times, torque is supplied to different parts of the system.
The Model
The model consists of a series of coupled inertia components separated by clutches between them. When a clutch is engaged, friction will be present between two adjacent inertia components, causing them to transfer momentum to each other. The first and the last inertia components are damped by rotational dampers, and a constant torque is applied to the first inertia.
The inertias are separated by clutches that can be engaged or disengaged to vary the structure of the drivetrain.
Simulation
By simulating the model, the angular velocities of the inertias over time can be studied. The effect of engaging the different clutches can be seen in the plot below.
After 5 seconds, the second clutch from the left is engaged, followed by the third after 10 seconds. After 15 seconds, the first clutch is disengaged.
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Analysis
By applying a sinusoidal function to the last clutch, a pattern emerges that can be studied using Fourier analysis.
Fourier analysis applied on the acceleration signal of the last inertia when the final clutch is applied using a sinusoidal force.
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