https://www.quora.com/What-is-the-difference-between-active-control-and-passive-control-of-vibrations
Dear A.M. Abdallah,
Active vibration control is a technique for reducing unwanted vibration by using some kind of sensor to measure the motion or force or acceleration or other parameter of thing that is vibrating and a powered actuator to generate a force to resist the unwanted motion. There is some kind of know how to reduce the unwanted action.Passive vibration control does not use any sensors or actuators and does not consume any power, however mechanical components are used to absorb unwanted vibrations such as spring blades, shock absorber, air cushion...Concerning the field of application of these techniques it is very vast that goes from the bicycle, to the scooter, to the car, to the transport vehicle in general and to the mechanical machine of transformation and manufacturing...For more details and information about this subject I suggest you to see links and attached file in topic.
- A Comparison of Passive and Active Damping Methods based on ...
https://www.ram.ewi.utwente.nl/aigaion/attachments/single/393
- Comparison of Passive and Active Vibration Isolation Systems - AZoM
https://www.azom.com/article.aspx?ArticleID=11257
- Passive, Semi-Active and Active Vibration Control Systems for ...
virtual.vtt.fi/virtual/proj6/arki/julkaisut/strice/Ou_Jinping.pdf
- ACTIVE/PASSIVE SEISMIC CONTROL OF STRUCTURES: Journal of ...
https://www.tandfonline.com/doi/abs/10.../13632460609350607
- IMPLEMENTATION OF ACTIVE AND PASSIVE CONTROL SYSTEMS ...
https://repositorio-aberto.up.pt/bitstream/10216/67088/.../68140.p... Best regards
Welll as the name idicated active vibration control use external force to creat a countre vibration to damp the vibration source while the passive control doesnt required any external force it just use the visco part to damp the vibration
hope this answer helps
Dear Abdallah;
The comparison between active and passive control is very simple, you can easily say that passive control of vibration uses it internal damping/stiffness to counter or dissipates the vibrations, while the active vibration control requires an external source of energy to do the same.
Warm regards.
A. M. Abdallah ..... Good question… Please check this reference below.. hope it will be helpful for you…
https://www.mdpi.com/2297-8747/11/2/151/pdf
Regards…
active control requires an observer to actively estimate the disturbances and uncertainties in a real-time fashion, while passive control depends totally on the feedback control to cancel the disturbances and uncertainties.
see my list of publications below for active disturbance rejection control.
https://www.researchgate.net/profile/Ibraheem_Ibraheem3/research
in active, an extra actuator need it cause to modify stiffness and damping of the system, while in passive, the stiffness and damping are constants
Active control- You vary the stiffness and damping factor of a link connection according to the nature of force applied. It's a close feedback system
Passive control- The properties of the link does not change according to force. It's an open-loop system.
Active control =vibrations encounter with damping agent
Passive control =vibration with natural damping
In Passive Control, the actions are done by the already designed and fixed control laws
but
In Active Control, the actions are done by the variable(active) control laws with help of extra tools such as an observer
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