Project - Position control of mass spring damper system
Aim
Obtain the transfer function of a mass spring damper system and use it in the model. Add a PID controller to adjust the force on mass so that its position follows a reference signal.
Spring mass damper system
The mass-spring-damper model consists of discrete mass nodes distributed throughout an object and interconnected via a network of springs and dampers.
PID controller
A proportional–integral–derivative controller (PID controller or three-term controller) is a control loop mechanism employing feedback that is widely used in industrial control systems and a variety of other applications requiring continuously modulated control. A PID controller continuously calculates an error value 
as the difference between a desired setpoint (SP) and a measured process variable (PV) and applies a correction based on proportional, integral, and derivative terms (denoted P, I, and D respectively), hence the name.
Explanation: 1 . The input refrence signal is inputed through the system by using Pulse generator having amplitude of 1 and period of 10 seconds.
2. The transfer function of Spring mass damper system is implemented in the system by using Transfer function.
Conclusion
With the help of PID controllers we have successfully positioned the spring mass damper system.