First order system vs second order system | Difference between First order system and second order system
This page compares first order system vs second order system and mentions difference between first order system and second order system. It mentions what is zero order system with example.
Zero Order System
In the system in which as input changes, output also changes immediately is called zero order system.
Example:
➨Resistor
First Order System
Definition:
• In the system in which as input changes, output also changes but not immediately is called
first order system.
• This system takes some delay but without oscillation.
• The figure-1 depicts circuit diagram of one such first order system.
Example:
➨Heater
Second Order System
Definition:
• In the system in which as input changes, output also changes but with some delay and oscillation is called
second order system.
• The figure-2 depicts circuit diagram of one such second order system.
• Analog instruments are second order instrument which has damping factor (ξ) between 0.6 to 0.8.
It is an underdamped system.
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