External disturbances

This paper proposed an adaptive controller based on Fuzzy logic for Cleaning and Detecting Robot Manipulator (CDRM). In fact, robot manipulators are a nonlinear system and in the working process, they usually bear the nonlinear fiction, payload variation external disturbance, etc.

6p vifriedrich 25-08-2023 6 3   Download

This paper introduces a control system synthesis method for linear MIMO systems with variable parameters and the impact of unmeasured external disturbances, which is very common in industrial fields. For practical applications, optimal control methods are often used for the system to achieve the desired quality parameters.

8p viironman 02-06-2023 8 3   Download

The paper presents the sliding mode based adaptive control (SMAC) of chaos for a permanent magnet synchronous motor (PMSM) subjected to parameter uncertainties and an external disturbance. A PMSM faces the chaos phenomenon when its parameters fall into a certain area.

5p vispyker 16-11-2022 7 3   Download

This paper proposed a T-S fuzzy model based adaptive fuzzy controller for the interior permanent magnet synchronous motors. Firstly, the T-S fuzzy model of the system is built based on the nonlinear dynamic model. Next, the adaptive fuzzy controller is designed to deal with the problems of system uncertainties and external disturbances.

5p vimelindagates 18-07-2022 2 2   Download

In this paper, a terminal sliding control based on a new quasi-sliding mode function is designed to control a liquid level in two tanks interacting system with external disturbance and uncertainty. This system is always in great demand in the chemical industry, petrochemical refining, water treatment, power generation, construction material production, food processing, automatic liquid dispensing and replenishment devices.

10p visherylsandber 28-06-2022 12 3   Download

This paper presents a controller synthesis method for continuous mixing technology commonly encountered in industry. The kinematic model of the control object is described in the form of a system of nonlinear equations and is affected by unknown external disturbance.

9p viirenerosenfeld 02-06-2022 11 3   Download

This paper presents a method to synthesize the adaptive sliding mode controller for a class of MIMO Euler-Lagarance systems with variable parameters. We perform a Taylor series expansion of a class of MIMO Euler-Lagarance systems into nonlinear state-space equations, considering cases of varying parameters and unmeasured external disturbances.

9p viirenerosenfeld 26-05-2022 17 2   Download

This paper presents build a finite time observator (FTO) and applies it to the Almega 16 robot motion system. The main content of the article is to design a FTO so that the observation of the external noise of the Almega 16 robot motion system will converge to the desired true value over a period of time. finite, is done by estimating the external noise quantities and then feeding them into the available Robot controller.

6p vijenchae2711 21-07-2021 10 3   Download

In this paper, a robust hierarchical method for trajectory tracking control of a quadrotor unmanned aerial vehicle (UAV) subjected to parameter uncertainties and external disturbances is presented. A robust control scheme based on a fast nonsingular terminal sliding mode strategy is designed to achieve fast response and excellent tracking accuracy. Moreover, a radial basis function artificial neural network with online adaptive schemes to estimate unknown aerodynamic parameters and external disturbances is developed to improve the control performance and reduce the chattering phenomenon.

6p cothumenhmong11 05-05-2021 14 3   Download

Soil macro-aggregate turnover and micro-aggregate formation: A mechanism for C sequestration under notillage agriculture had its genesis in attempts to identify and isolate soil organic matter (SOM) fractions that reflect the impacts of climate, soil physiochemical properties and physical disturbance on the soil organic carbon balance. Soil tillage can affect the formation and stability of soil aggregates. The disruption of soil structure weakens soil aggregates to be susceptible to the external forces of water, wind, and traffic instantaneously, and over time.

20p caygaocaolon2 11-03-2020 18 1   Download

Terrestrial ecosystems consist of above- and below-ground components that interact to influence community- and ecosystem-level processes and properties. Soils act as the most important medium for linking the above and below ground community which are of very sensitive to any external disturbances. To study the effect of disturbances and also the influence of crop to soil microbial community which are an indicators of biological soil processes a short cycle of jhum practices from Mizoram was selected and study in a microcosm experiment.

15p trinhthamhodang3 12-02-2020 10 1   Download

Approximately 20% of children experience internalizing or externalizing DSM-IV-TR disorders. This prevalence rate cannot be reduced through treatment only. Effective preventive interventions are therefore urgently needed.

14p viamsterdam2711 07-01-2020 17 1   Download

This paper proposes a fuzzy adaptive second order sliding mode controller for 2D overhead crane model to improve the quality of position tracking, anti-swing in case existence of external disturbances. The sliding surface parameters are adjusted by a fuzzy logic system to change the sliding surface in order to track faster and make the payload oscillation smaller. The simulation results show that the system quality is improved and the applicability of the proposed controller in industrial practice.

8p thithizone1 18-07-2019 13 1   Download

The satellite is supposed to move in a circular orbit around the Earth and always require energy for its activities. Therefore, the solar panels need to orient towards the Sun as long as possible to receive the most energy. In the first step, a dynamics model of a satellite disposed by three momentum wheels whose angular speeds controlled by corresponding motors is developed.

8p thithizone 16-07-2019 15 0   Download

order to overcome the uncertain parameters and external disturbances which exist in aerospace, we utilize an interval type-2 fuzzy approach represented by 9-point representation. Simulation results indicate that this method of interval type-2 fuzzy sliding mode controller can provide robust flight control to ensure good tracking performance of hypersonic aircraft.

4p praishy2 27-02-2019 23 0   Download

In this paper, Lagrange formula is employed with the purpose of modelling both the kinematics and dynamics of a nonholonomic wheeled mobile robot (WMR) subject to unknown wheel slips, model uncertainties such as unstructured unmodelled dynamic components, and unknown external disturbances such as unknown external forces. Afterwards, an adaptive tracking controller based on a radial basis function neural network (RBFNN) with an online weight tuning algorithm is proposed for tracking a predefined trajectory.

16p thuyliebe 05-10-2018 53 1   Download

This paper addresses an optimal cooperative tracking control method with disturbance rejection in the presence of no knowledge of internal dynamics for multi-nonholonomic mobile robot (NMR) systems. Unlike most existing methods, our method integrates kinematic and dynamic controllers into one using adaptive dynamic programming techniques based on the concept of differential game theory and neural networks, and is therefore entirely optimal.

23p cumeo3000 01-08-2018 60 3   Download

We cannot alter external things, nor shape other people to our liking, nor mould the world to our wishes but we can alter internal things,-our desires, passions, thoughts,-we can shape our liking to other people, and we can mould the inner world of our own mind in accordance with wisdom, and so reconcile it to the outer world if men and things. The turmoil of the world we cannot avoid, but the disturbances of mind we can overcome. The duties and difficulties of life claim our attention, but we can rise above all anxiety concerning them. Surrounded by noise, we can yet have a quiet...

33p chonguoinoiay 26-02-2013 38 3   Download

Decentralization of governmental fiscal responsibility has been a component of much economic reform, providing contradictory evidence of the economic consequences. The case for fiscal decentralization rests on the assumption of heterogeneity of regional preferences or the benefits of competition. When communities have heterogeneous tastes, the government closest to the citizens can deliver a bundle of services that reflects community preferences.

31p machuavo 19-01-2013 49 3   Download

Most information about the external world enters the human mind via the visual system; when seeing and looking are impaired, important aspects of life may elude us or the world becomes disturbingly distorted. While the globe may be likened to a camera, it is the brain that constructs an image of the world. It does this by making sense of the signals it receives from the retina, in which it is helped by data stored in memory as well as data gathered through other modes of perception.

460p taurus23 27-09-2012 65 7   Download