Robust control of a two-state Greitzer compressor model by state-feedback linearization

2016 ◽  
Author(s):  
Christoph Josef Backi ◽  
Jan Tommy Gravdahl ◽  
Sigurd Skogestad
Keyword(s):  
Robust Control ◽  
Feedback Linearization ◽  
State Feedback

Robust Control of Nonlinear Tape Transport Systems With and Without Tension Sensors

2006 ◽  
Vol 129 (1) ◽  
pp. 41-55 ◽  
Author(s):  
Matthew D. Baumgart ◽  
Lucy Y. Pao
Keyword(s):  
Robust Control ◽  
Feedback Linearization ◽  
State Feedback ◽  
Transport Systems ◽  
Tape Transport ◽  
Control Laws ◽  
Damping Characteristics ◽  
Lyapunov Redesign ◽  
Time Invariant ◽  
Web Media

Web-winding systems, such as tape drives, are often modeled as linear and time-invariant, but at least two nonlinearities are common in these systems. First, the reel radii and moments of inertia change as web media spools from one reel to another. Second, friction can draw a thin layer of air between the layers of web media wrapped on the take-up reel, making the system’s spring and damping characteristics nonlinear by allowing a greater length of media to vibrate freely. In addition to these nonlinearities, there is often uncertainty in the motor parameters. In the first part of this paper, feedback linearization ideas motivate state feedback and changes of variables that transform the system into decoupled and intuitively meaningful tension and velocity loops. For the case where tension measurements are available, Lyapunov redesign techniques are then used to develop control laws that are robust with respect to these nonlinearities and uncertainties. The second part of this paper then develops an observer-based controller for the case where no tension measurements are available. Performance is established analytically for both the measurement-based and observer-based schemes. Simulations illustrate this performance.

Robust Control for High Performance Induction Motor Drives Based on Partial State-Feedback Linearization

2019 ◽  
Vol 55 (1) ◽  
pp. 490-503 ◽  
Author(s):  
Angelo Accetta ◽  
Francesco Alonge ◽  
Maurizio Cirrincione ◽  
Filippo D'Ippolito ◽  
Marcello Pucci ◽  
...  
Keyword(s):  
Robust Control ◽  
Induction Motor ◽  
Feedback Linearization ◽  
High Performance ◽  
State Feedback ◽  
Motor Drives ◽  
Induction Motor Drives ◽  
Partial State

Performance improvement of direct torque control for induction motor drive via fuzzy logic-feedback linearization

2019 ◽  
Vol 38 (2) ◽  
pp. 672-692 ◽  
Author(s):  
Abdelkarim Ammar
Keyword(s):  
Fuzzy Logic ◽  
Robust Control ◽  
Feedback Linearization ◽  
Control Algorithm ◽  
Direct Torque Control ◽  
Torque Control ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Content Type ◽  
Control Approach

Purpose This paper aims to propose an improved direct torque control (DTC) for the induction motor’s performance enhancement using dual nonlinear techniques. The exact feedback linearization is implemented to create a linear decoupled control. Besides, the fuzzy logic control approach has been inserted to generate the auxiliary control input for the feedback linearization controller. Design/methodology/approach To improve the DTC for induction motor drive, this work suggests the incorporation of two nonlinear approaches. As the classical feedback linearization suffers while the presence of uncertainties and modeling inaccuracy, it is recommended to be associated to another robust control approach to compensate the uncertainties of the model and make a robust control versus the variations of the machine parameters. Therefore, fuzzy logic controllers will be integrated as auxiliary inputs to the feedback linearization control law. Findings The simulation and the experimental validation of the proposed control algorithm show that the association of dual techniques can effectively achieve high dynamic behavior and improve the robustness against parameters variation and external disturbances. Moreover, the space vector modulation is used to preserve a fixed switching frequency, reduce ripples and low switching losses. Practical implications The theoretical, simulation and experimental studies prove that the proposed control algorithm can be used on different AC machines for variable speed drive applications such as oil drilling, traction systems and wind energy conversion systems. Originality/value The proposed DTC strategy has been developed theoretically and realized through simulation and experimental implementation. Different operation conditions have been conducted to check the ability and robustness of the control strategy, such as steady state, speed reversal maneuver, low-speed operation and parameters variation test with load application.

scholarly journals Optimization over state feedback policies for robust control with constraints

Automatica ◽  
2006 ◽  
Vol 42 (4) ◽  
pp. 523-533 ◽  
Author(s):  
Paul J. Goulart ◽  
Eric C. Kerrigan ◽  
Jan M. Maciejowski
Keyword(s):  
Robust Control ◽  
State Feedback
Sign in / Sign up

Export Citation Format

Share Document