On the Leakage, Torque, and Dynamic Force Coefficients of Air in Oil (Wet) Annular Seal: A Computational Fluid Dynamics Analysis Anchored to Test Data

L San Andrés, J Yang, X Lu - … of Engineering for …, 2019 - asmedigitalcollection.asme.org
Subsea pumps and compressors must withstand multiphase flows whose gas volume
fraction (GVF) or liquid volume fraction (LVF) varies over a wide range. Gas or liquid content …

A measurement-aided control system for stabilization of the real-life stewart platform

WP Hunek, P Majewski, J Zygarlicki, Ł Nagi, D Zmarzły… - Sensors, 2022 - mdpi.com
In the paper, an innovative control system devoted to the stabilization of the parallel
manipulator-type Hexapod is presented. The device consists of three main parts, allowing us …

Reduction of matched and unmatched uncertainties for a class of nonlinear perturbed systems via robust control

P Ordaz, M Ordaz, C Cuvas… - International Journal of …, 2019 - Wiley Online Library
The aim of this paper is to design a robust control for stabilization of a class of nonlinear
perturbed system subject to matched and unmatched disturbances. Here, the concept of …

Full-order observer for a class of nonlinear systems with unmatched uncertainties: Joint attractive ellipsoid and sliding mode concepts

B Sánchez, C Cuvas, P Ordaz… - IEEE Transactions …, 2019 - ieeexplore.ieee.org
This article addresses the problem of state estimation of controlled affine nonlinear systems
in the presence of disturbances and uncertainties in the state equation. The proposed …

Model identification and real-time implementation of a linear parameter–varying control scheme on lab-based inverted pendulum system

A Barkat, MT Hamayun, S Ijaz… - Proceedings of the …, 2021 - journals.sagepub.com
To research the tendencies of immediate change in the scheduled parameters, a linear
parameter–varying control strategy is made in real time for lab-based inverted pendulum …

Suboptimal adaptive control of dynamic systems with state constraints based on barrier lyapunov functions

I Salgado, M Mera, I Chairez - IET Control Theory & …, 2018 - Wiley Online Library
This study designed a suboptimal output control strategy to characterise an attractive and
invariant set for the state trajectories of perturbed linear systems with noisy measurements …

Adaptive-robust stabilization of the Furuta's pendulum via attractive ellipsoid method

P Ordaz, A Poznyak - Journal of Dynamic Systems …, 2016 - asmedigitalcollection.asme.org
This paper focuses on the issue of adaptive-robust stabilization of the Furuta's pendulum
around unstable equilibrium where the dynamical model is unknown. The control scheme …

Identification and Control of Flexible Joint Robots Based on a Composite-Learning Optimal Bounded Ellipsoid Algorithm and Prescribe Performance Control …

X Li, D Zheng, K Guo, X Ren - Applied Sciences, 2024 - mdpi.com
This paper presents an indirect adaptive neural network (NN) control algorithm tailored for
flexible joint robots (FJRs), aimed at achieving desired transient and steady-state …

Hybrid robust disturbance rejection position-force control to adjust the motion of mobile manipulator in automatic aluminum foundry recycling industries

K Mendoza-Bautista, M Alfaro-Ponce… - International Journal of …, 2024 - Taylor & Francis
This study presents the development of an event-driven hybrid control for position and force
tracking applied on a mobile robotic manipulator for metal recycling tasks. The suggested …

Parameter identification based on nonlinear observer for mechanical systems

P Ordaz, M Ramírez… - Journal of …, 2021 - asmedigitalcollection.asme.org
This paper deals with the parameter identification problem for nonlinear mechanical systems
based on state estimation. Here, the concept of Sliding Mode Observer for finite time state …