Model-free sliding mode control of nonlinear systems: Algorithms and experiments

RE Precup, MB Radac, RC Roman, EM Petriu - Information Sciences, 2017 - Elsevier
This paper proposes two model-free sliding mode control system (MFSMCS) structures. The
new structures are compared with a model-free intelligent proportional-integral (iPI) control …

Grey wolf optimizer-based approach to the tuning of PI-fuzzy controllers with a reduced process parametric sensitivity

RE Precup, RC David, EM Petriu, AI Szedlak-Stinean… - IFAC-PapersOnLine, 2016 - Elsevier
This paper suggests the use of Grey Wolf Optimizer (GWO) algorithms to tune the
parameters of Takagi-Sugeno proportional-integral-fuzzy controllers (PI-FCs) for a class of …

Novel adaptive gravitational search algorithm for fuzzy controlled servo systems

RE Precup, RC David, EM Petriu… - IEEE Transactions …, 2012 - ieeexplore.ieee.org
This paper presents a novel adaptive Gravitational Search Algorithm (GSA) for the optimal
tuning of fuzzy controlled servo systems characterized by second-order models with an …

Fuzzy logic‐based adaptive gravitational search algorithm for optimal tuning of fuzzy‐controlled servo systems

RE Precup, RC David, EM Petriu… - IET Control Theory & …, 2013 - Wiley Online Library
This study proposes an adaptive gravitational search algorithm (AGSA) which carries out
adaptation of depreciation law of the gravitational constant and of a parameter in the …

A robust fuzzy adaptive law for evolving control systems

S Blažič, I Škrjanc, D Matko - Evolving systems, 2014 - Springer
In this paper an adaptive law with leakage is presented. This law can be used in the
consequent part of Takagi–Sugeno-based control. The approach enables easy …

Model-free control performance improvement using virtual reference feedback tuning and reinforcement Q-learning

MB Radac, RE Precup, RC Roman - International Journal of …, 2017 - Taylor & Francis
This paper proposes the combination of two model-free controller tuning techniques, namely
linear virtual reference feedback tuning (VRFT) and nonlinear state-feedback Q-learning …

Automatic mass balancing of a small spherical simulator for attitude control verification

JGC Mamani, X Wang, PR Yanyachi - IEEE Access, 2024 - ieeexplore.ieee.org
In the aerospace field, researchers and engineers have been using attitude simulators to
test and evaluate spacecraft attitude control algorithms, usually developed at the design …

Evolutionary optimization-based tuning of low-cost fuzzy controllers for servo systems

RE Precup, RC David, EM Petriu, MB Rădac… - Knowledge-Based …, 2013 - Elsevier
This paper suggests the optimal tuning of low-cost fuzzy controllers dedicated to a class of
servo systems by means of three new evolutionary optimization algorithms: Gravitational …

Adaptive GSA-based optimal tuning of PI controlled servo systems with reduced process parametric sensitivity, robust stability and controller robustness

RE Precup, RC David, EM Petriu… - IEEE transactions on …, 2014 - ieeexplore.ieee.org
This paper suggests a new generation of optimal PI controllers for a class of servo systems
characterized by saturation and dead zone static nonlinearities and second-order models …

Observer-based adaptive neural network controller for uncertain nonlinear systems with unknown control directions subject to input time delay and saturation

MK Talkhoncheh, M Shahrokhi, MR Askari - Information Sciences, 2017 - Elsevier
This paper addresses the design of an observer based adaptive neural controller for a class
of strict-feedback nonlinear uncertain systems subject to input delay, saturation and …