EE 350 Control Systems Assignments
Assignment 1: Modeling of a dynamic system (cont'd...)
1.4 The figure 1.4 shows a simplified version of a car or motorcycle suspension system. The input
$u$ is the displacement of the road with respect to a reference (you may say unevenness of the road) and $y$ is the displacement
of the body of the car. Obtain the transfer function $Y(s)/U(s)$ of the system.
Fig 1.4 Car suspension system
1.5 The figure 1.5 shows a inverted pendulum system. Assume that the mass of the inverted pendulum
is $m$ and is evenly distributed along the length of the rod. Input of the system is $u$ and output is $\theta$.
Assuming that the angle $\theta$ is small, derive mathematical models of the system in the forms of differential equations,
transfer functions, and state-space equations.
Fig 1.5 Inverted pendulum on a car
1.6 Obtain a state-space representation of the mechanical system shown in figure 1.6, where $u_1$ and $u_2$
are the inputs and $y_1$ and $y_2$ are the outputs.
Fig 1.6 Mechanical spring mass damper system
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