State Observer Designs for Quarter-car Passive Suspension

This   paper   presents   state   observer   designs   for   quarter-car   passive   suspension.   Proposed   designs correspond to two theories, full-order state observer and observer on closed-loop system. Those observers are used for states and estimation errors observation.Simulation is done using MATLAB and SIMULINK. MATLAB is used to calculate both feedback gain matrix and observer gain matrix whereas SIMULINK is applied  to  build  state  space  block.  Results  show  that  those  observers  work  effectively  and  fit  observer theories. This work may motivate to continue to other steps of observer designs, observer designs for half-car and full car passive suspension.