Difference Between Normal Feedback Controller and Robust Controller

AI Thread Summary
Normal feedback controllers may not ensure stability or adequately compensate for model misrepresentations, such as linearization errors or parameter variations. Robust controllers are designed to handle these discrepancies effectively, maintaining performance across a range of conditions, both expected and unexpected. They provide a level of compensation for system errors that traditional feedback controllers may not achieve. The discussion emphasizes the importance of choosing the right controller based on the system's needs and potential uncertainties. Understanding the differences between these controllers is crucial for effective system design.
yaswanth_040
Messages
12
Reaction score
0
Hi all,
If we misrepresent the Model of the system say we linearized the System Model or any parameter variations like friction, Temp etc.
Will normal feedback takes care of the offset of the Model?
I was confused with Robust Controller. What is it? and How effective is it than normal?

Thank You,
Yaswanth
 
Engineering news on Phys.org
Simple feedback does not necessarily mean a stable system, normally it doesn't, so you may (more than likely) need some sort of controller to compensate for system error.

What is meant by the term robust is that it can compensate the system adequately in different circumstances, anticipated and (perhaps) unanticipated, without a system hindering error (or just an error you can live with).
 


You should refrain from double posting. Check your post in the Mech Engineering forum.
 


Sorry about that. First I thought that it was Mechanical one and then after not getting any replies I post here.
 

Thread 'Underwater piezoelectric sensor array receive sensitivity'

Hi all I have some confusion about piezoelectrical sensors combination. If i have three acoustic piezoelectrical sensors (with same receive sensitivity in dB ref V/1uPa) placed at specific distance, these sensors receive acoustic signal from a sound source placed at far field distance (Plane Wave) and from broadside. I receive output of these sensors through individual preamplifiers, add them through hardware like summer circuit adder or in software after digitization and in this way got an...
View full post »

Thread 'Following up on the recent thread about Earth Resistance measurements'

I have recently moved into a new (rather ancient) house and had a few trips of my Residual Current breaker. I dug out my old Socket tester which tell me the three pins are correct. But then the Red warning light tells me my socket(s) fail the loop test. I never had this before but my last house had an overhead supply with no Earth from the company. The tester said "get this checked" and the man said the (high but not ridiculous) earth resistance was acceptable. I stuck a new copper earth...
View full post »

Thread 'Question about bonding ground and neutral'

I am not an electrical engineering student, but a lowly apprentice electrician. I learn both on the job and also take classes for my apprenticeship. I recently wired my first transformer and I understand that the neutral and ground are bonded together in the transformer or in the service. What I don't understand is, if the neutral is a current carrying conductor, which is then bonded to the ground conductor, why does current only flow back to its source and not on the ground path...
View full post »

Similar threads

What is the "observer" in PID control?
Replies
12
Views
3K
Should I study D. S. Processing or control theory in greater depth?
Replies
1
Views
1K
MATLAB I with matlab designing a steady state feedback H2 control system
Replies
1
Views
2K
What is the difference between digital controls and digital control systems?
Replies
2
Views
2K
Trouble solving for end state of two control volumes in a rigid tank
Replies
12
Views
2K
Voltage of residential Air-Conditioner thermostats
Replies
11
Views
2K
I Variable Normalization for different variable ranges....
Replies
3
Views
2K
Confusion on: High Pass Filter at Op Amp Input
Replies
6
Views
2K
Why is there confusion about capacitors and potential difference between plates?
Replies
9
Views
4K
B Questions about momentum and force as well as normal force/friction
Replies
35
Views
4K

Hot Threads

Recent Insights

Back
Top