1.2 SECOND ORDER STEP RESPONSE

 

• Second order systems tend to have a first order decay, but they also have a sinusoidal component.

 

• Consider the example,

 

 

• These systems have a well know time function, as is pictured below. This particular response is for a step input function.

 

 

• These systems are commonly described using the natural frequency and the damping coefficient.

 

 

• Consider the example,