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Solve this question from a System Analysis worksheet Figure 7 illustrates a proposed tower - climbing system for wind - turbine maintenance. In this system,
Solve this question from a System Analysis worksheet
Figure illustrates a proposed towerclimbing system for windturbine
maintenance. In this system, a carriage holds a set of powered wheels pressed
firmly to the tower and these set the height of a horizontal pivot line
through the centreline of the tower. Another horizontal pivot line, D also
passes through the tower centreline and is a fixed distance below A flexible
beam ABC determines the height of the vertical platform and control over this
height is achieved by adjusting the force in the link The following
equations govern the dynamic behaviour of the platform:
Fcos
Fcos
a Identify the statevariables, inputs and outputs from the above
equations.
b Sketch a SIMULINK model of this system. Use appropriate icons if
possible but alternative icons may be used provided that the meaning is clear
in every case. Use icons to represent inputs and outputs, use a single block to
represent the function relating to and label signal lines.
c An equilibrium condition exists where and Determine
the equilibrium values of and Suggest how the SIMULINK model might
be used to verify this equilibrium.
d Based on the outcomes from c prepare a linearised model of the
dynamic system in standard statespace format making clear what are the
input, state and output vectors, and respectively and the matrices
B C D Note that at the equilibrium state
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