Share This Author
Tuning of PID Controllers Based on Bode’s Ideal Transfer Function
- R. Barbosa, J. Machado, I. Ferreira
- Engineering, Mathematics
- 1 December 2004
This paper presents a new strategy for tuning PID controllers based on a fractional reference model. The model is represented as an ideal closed-loop system whose open-loop is given by the Bode’s…
Some Applications of Fractional Calculus in Engineering
- J. Machado, M. Silva, Alexandra M. S. F. Galhano
- Engineering
- 2010
Fractional Calculus (FC) goes back to the beginning of the theory of differential calculus. Nevertheless, the application of FC just emerged in the last two decades, due to the progress in the area…
Time domain design of fractional differintegrators using least-squares
- R. Barbosa, J. Machado, M. Silva
- MathematicsSignal Process.
- 1 October 2006
Effect of fractional orders in the velocity control of a servo system
- R. Barbosa, J. Machado, I. S. Jesus
- EngineeringComput. Math. Appl.
- 1 March 2010
Analysis of the Van der Pol Oscillator Containing Derivatives of Fractional Order
- R. Barbosa, J. Machado, B. Vinagre, A.J. Calderón
- Mathematics
- 1 September 2007
In this paper a modified version of the classical Van der Pol oscillator is proposed, introducing fractional-order time derivatives into the state-space model. The resulting fractional-order Van der…
Implementation of Discrete-Time Fractional- Order Controllers based on LS Approximations
- R. Barbosa, J. Machado
- Mathematics
- 2006
In this paper we develop rational discrete-time approximations (IIR filters) to continuous fractional-order integrators and differentiators of type sα, α ∈ ℜ. For that, it is proposed the adoption of…
Genetic optimization of fuzzy fractional PD+I controllers.
- I. S. Jesus, R. Barbosa
- Computer ScienceISA transactions
- 1 July 2015
Performance of Fractional PID Algorithms Controlling Nonlinear Systems with Saturation and Backlash Phenomena
- R. Barbosa, J. T. Tenreiro Machado, Alexandra M. Galhano
- Mathematics
- 1 September 2007
The development of fractional-order controllers is currently one of the most promising fields of research. However, most of the work in this area addresses the case of linear systems. This paper…
On the Fractional PID Control of a Laboratory Servo System
- R. Barbosa, J. Machado, I. S. Jesus
- Computer Science
- 2008
TLDR
Architecture of an wheeled climbing robot with dynamic adjustment of the adhesion system
- A. Oliveira, M. F. Silva, R. Barbosa
- Materials ScienceIEEE 8th International Symposium on Intelligent…
- 29 November 2010
TLDR
...
...