Hierarchical Velocity Control Based on Differential Flatness for a DC/DC Buck Converter-DC Motor System

This paper presents a hierarchical controller that carries out the angular velocity trajectory tracking task for a DC motor driven by a DC/DC Buck converter. The high level control is related to the DC motor and the low level control is dedicated to the DC/DC Buck converter; both controls are designed via differential flatness. The high level control provides a desired voltage profile for the DC motor to achieve the tracking of a desired angular velocity trajectory. Then, a low level control is designed to ensure that the output voltage of the DC/DC Buck converter tracks the voltage profile imposed by the high level control. In order to experimentally verify the hierarchical controller performance, a DS1104 electronic board from dSPACE and Matlab-Simulink are used. The switched implementation of the hierarchical average controller is accomplished by means of pulse width modulation. Experimental results of the hierarchical controller for the velocity trajectory tracking task show good performance and robustness against the uncertainties associated with different system parameters.

[1]  Jose Rafael Garcia-Sanchez,et al.  Two-Stage Control Design of a Buck Converter/DC Motor System without Velocity Measurements via a-Modulator , 2013 .

[2]  R. Silva-Ortigoza,et al.  Trajectory Tracking in a Mobile Robot without Using Velocity Measurements for Control of Wheels , 2008, IEEE Latin America Transactions.

[3]  R. S. Ortigoza,et al.  Wheeled Mobile Robots: A review , 2012, IEEE Latin America Transactions.

[4]  J. L. Flores,et al.  Arranque suave para un motor de CD a través de un convertidor reductor CD-CD , 2011 .

[5]  H. Sira-Ramirez,et al.  DC motor velocity control through a DC-to-DC power converter , 2004, 2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601).

[6]  Hebertt Sira-Ramírez,et al.  Control Design Techniques in Power Electronics Devices , 2006 .

[7]  H. Sira-Ramirez,et al.  A smooth starter for a DC machine: a flatness based approach , 2004, (ICEEE). 1st International Conference on Electrical and Electronics Engineering, 2004..

[8]  Mohd Ashraf Ahmad,et al.  Control Strategy of Buck Converter Driven Dc Motor: a Comparative Assessment , 2010 .

[9]  S. Ganeshkumar,et al.  Comparative study of Proportional Integral and Backstepping controller for Buck converter , 2011, 2011 International Conference on Emerging Trends in Electrical and Computer Technology.

[10]  John T. Wen,et al.  Trajectory tracking control of a car-trailer system , 1997, IEEE Trans. Control. Syst. Technol..

[11]  F. Giri,et al.  Accounting of DC-DC power converter dynamics in DC motor velocity adaptive control , 2006, 2006 IEEE Conference on Computer Aided Control System Design, 2006 IEEE International Conference on Control Applications, 2006 IEEE International Symposium on Intelligent Control.

[12]  Ramon Silva-Ortigoza,et al.  DC/DC Buck Power Converter as a Smooth Starter for a DC Motor Based on a Hierarchical Control , 2015, IEEE Transactions on Power Electronics.

[13]  Johann Reger,et al.  FLATNESS BASED CONTROL OF A BUCK-CONVERTER DRIVEN DC MOTOR , 2006 .

[14]  R. Silva-Ortigoza,et al.  Construction of a WMR for Trajectory Tracking Control: Experimental Results , 2013, TheScientificWorldJournal.

[15]  H. Sira-Ramirez,et al.  An exact tracking error dynamics passive output feedback controller for a Buck-Boost-converter driven DC motor , 2006, 2006 IEEE International Power Electronics Congress.

[16]  Hebertt Sira-Ramírez,et al.  Sliding Mode-Delta Modulation GPI Control of a DC Motor through a Buck Converter , 2004 .

[17]  Hebertt Sira-Ramirez,et al.  On the Robust Control of Buck-Converter DC-Motor Combinations , 2013, IEEE Transactions on Power Electronics.

[18]  Johann Reger,et al.  Load Torque Estimation and Passivity-Based Control of a Boost-Converter/DC-Motor Combination , 2010, IEEE Transactions on Control Systems Technology.