Hello, 

You could try:

1)Google scholar (You could find free papers)

2)ieeexplore (All paid)

Hi Dear Mohammad Malek Mohammadi ,

Have you tried these?  If not please try them, I hope they will help you.

1. IEEE xplore 

2. Google scholar

3. Science direct

4. Springer

5. Sid.IR

6. Sivilica

Mohammad,

Also, you can find free articles here:

http://citeseerx.ist.psu.edu/

(1) Enter "MIMO" at Google Scholar, we will reach the following link

http://scholar.google.ca/scholar?hl=en&q=MIMO

Most of papers are related to wireless communications instead of MIMO multivariable control systems.

Enter "MIMO control" at Google Scholar, we will reach the following link

http://scholar.google.ca/scholar?q=MIMO+control

(1a) Each paper may show a number of versions. For example,

Mimo control of an apache web server: Modeling and controller design

N Gandhi, DM Tilbury, Y Diao… - American Control  …, 2002 - ieeexplore.ieee.org

Abstract This paper considers the efficacy of feedback control in improving the performance of computing systems. Computing systems typically have many competing performance goals which are affected by several external variables. A feedback control strategy is  ...

Cited by 131 Related articles All 6 versions Cite Save

(1b) Click "All 6 versions", you will reach the following link.

http://scholar.google.ca/scholar?cluster=4849710214441080133&hl=en&as_sdt=0,5

You can download the free paper by clicking any link with the mark "[PDF]" (e.g., psu.edu[PDF]) shown in the left column.

(2) You can also download the papers which have been uploaded into ResearchGate. For example,

Y. Hong and O.W.W. Yang, "Adaptive Multiloop PI Rate-based Controller Design for a MIMO IP Router Based on Phase Margin," Proceedings of IEEE Globecom, St. Louis, MO, U.S.A, November 2005, pp. 1070-1074.

https://www.researchgate.net/publication/4213069_Adaptive_multiloop_PI_rate-based_controller_design_for_a_MIMO_IP_router_based_on_phase_margin

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=1577801

Y. Hong and O.W.W. Yang, "Self-Tuning Multiloop PI Rate Controller for an MIMO AQM Router With Interval Gain Margin Assignment," Proceedings of IEEE HPSR, Hong Kong, China, May 2005, pp. 401-405.

https://www.researchgate.net/publication/4171680_Self-tuning_multiloop_PI_rate_controller_for_an_MIMO_AQM_router_with_interval_gain_margin_assignment

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=1503263

The above two papers have been reviewed by the master thesis "Analysis of Stability and Stabilization for Second-Order Vector Differential Systems" written by Wen-Yan Huang. The master thesis (English version starts at Page #19) can be downloaded from the following link.

http://thesis.lib.ncu.edu.tw/ETD-db/ETD-search/view_etd?URN=955201069

(3) Discussion on control system design

"What are trends in control theory and its applications in physical systems (from a research point of view)?"

https://www.researchgate.net/post/What_are_trends_in_control_theory_and_its_applications_in_physical_systems_from_a_research_point_of_view2

Conference Paper Self-tuning multiloop PI rate controller for an MIMO AQM rou...

Conference Paper Adaptive multiloop PI rate-based controller design for a MIM...

You can explore 'Automatica' journal..good one for control system papers

Dear Mohammad Malek,

I think the best way to find the related papers, is Google scholar.then you can download the papers, from the following links:

1- http://www.freepapers.ir/

2- http://sci-hub.org/

Kind regard,

Saeed Rahmati

Please, evaluate some papers. You can use biliography for findings another papers.

The best resource is always Google. You can find anything in Google. On Google Scholar, you will see if you have full access to the expected paper via your connection or not. Then you'll be guided to sciencedirect.com, or ieeexplore.ieee.org or other resources. If you have access to scopus.com via your university, you can both search and download the papers, but the search engine is not as powerful as Google.

Good luck, 

Ehsan

Below you can find a book and some papers of my authorship.

Feel free to ask me what you want.

Regards,

Fabricio.

Article Partial decoupling of non-minimum phase processes with bound...

Article Limiting interactions in decentralized control of MIMO systems

Article Sliding mode compensation to preserve dynamic decoupling of ...

Article Collective Sliding-Mode Technique for Multivariable Bumpless Transfer

Data Advanced Control of Constrained Processes and Systems. Contr...

My Dear Mohammad Malek Mohammadi; Following links may be useful to your research. Regards

http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1203794

http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=362847

http://www.sciencedirect.com/science/article/pii/001600329190006O

Thank you very much for your helpful comments and suggestions.

Please, refer the attached papers

My Dear Mohammad Malek Mohammadi, Please go through the attachment may be useful to you. Regards

http://www.sciencedirect.com/science/article/pii/S0005109803000852

http://www.sciencedirect.com/science/article/pii/S0165011498000529

http://www.sciencedirect.com/science/article/pii/S0165011406005549

http://iranssp.com/%D9%85%D9%82%D8%A7%D9%84%D8%A7%D8%AA-2015/

Dear,

Or IEEExplore or google scholar

Dear Meysam, and Ahmad, it is great...

www.google.com

hi

http://www.sciencedirect.com/science/article/pii/S0005109803000852

Hi

http://www.research.iaun.ac.ir

Please refer to this article:

https://www.researchgate.net/publication/318726178_An_Improved_Active_Disturbance_Rejection_Control_for_a_Differential_Drive_Mobile_Robot_with_Mismatched_Disturbances_and_Uncertainties

Conference Paper An Improved Active Disturbance Rejection Control for a Diffe...