Constructing The Model
Now all what we need is to apply the external and internal forces on the system properly. We will use the following Simulink blocks to accomplish these tasks:
The signal generator source block generates periodic waveforms such as sine, square, and saw-tooth
waves as well as a random signal. The gain block works on a scalar or a vector quantity. The specified gain multiplies the
input. The output is either a scalar or vector signal following normal vector-scalar multiplication rules. The add block adds (or subtracts) two (or more) signals and outputs their sum (or difference). The two inputs must either all
be scalars, or all be vectors of the same dimension. The output is the same dimension as the inputs. We already know about the
integrator block. The scope block is used to display a signal as a function of time.