The Sliding Mode Technique and Technology (SM T&T) According to Vardan Mkrttchian in Intellectual Control(IC)

2017 ◽  
pp. 1-9 ◽  
Keyword(s):  
Sliding Mode ◽  
Engineering System ◽  
Engineering Systems ◽  
Sliding Modes ◽  
Environment Impact ◽  
Information Process ◽  
Initial Stage ◽  
Control Search ◽  
Intellectual Control ◽  
Object Of Control

By intellectual control we mean the total of engineering tools and software joined by the information process and working in coordination with a person (a group of people), able to synthesize goals on the basis of the data and knowledge, take decisions for action and find rational means of achieving aims. As it was mentioned in this chapter, the sliding mode data serves the ground for a new methodology and technology of intellectual control and communications. This chapter covers the research into scientific and methodological framework for creating sustainable sliding modes in non-engineering systems of intellectual control, search for possibilities of self-organization of sliding modes methods and technologies enabled by accumulation of the data on their work in the process of their functioning with intellectual control. This allows of undertaking more exact control methods which is impossible at the initial stage because of the incomplete knowledge of environment impact and the state of the system itself and, most importantly, the object of control in a non-engineering system.

Sliding Mode in Real Communications

2017 ◽  
pp. 22-29 ◽  
Keyword(s):  
Sliding Mode ◽  
Sliding Modes ◽  
Human Relationship ◽  
Information Process ◽  
New Methods ◽  
The Way

In this chapter, real communication refers to the combined information process a set of hardware and software, working in the human relationship with a man capable on the basis of information, knowledge and experience, and in the presence of motivation to synthesize a new goal to make the new decision to take action and find rational ways to achieve this goal. As it was mentioned in Chapter 1, the way of sliding modes forms the basis for new methods and technology of communications providing for adaptability and at the same time invariability of communications.

Sliding Modes for the Simulation of Mechanical and Electrical Systems Defined by Differential-Algebraic Equations

2010 ◽  
Vol 5 (4) ◽  
Author(s):  
Sachit Rao ◽  
Vadim Utkin ◽  
Martin Buss
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Initial Conditions ◽  
Differential Algebraic Equations ◽  
Engineering Systems ◽  
Sliding Modes ◽  
Algebraic Equations ◽  
Electric Networks ◽  
Electrical Systems ◽  
Mode Control

We offer a technique, motivated by feedback control and specifically sliding mode control, for the simulation of differential-algebraic equations (DAEs) that describe common engineering systems such as constrained multibody mechanical structures and electric networks. Our algorithm exploits the basic results from sliding mode control theory to establish a simulation environment that then requires only the most primitive of numerical solvers. We circumvent the most important requisite for the conventional simulation of DAEs: the calculation of a set of consistent initial conditions. Our algorithm, which relies on the enforcement and occurrence of sliding mode, will ensure that the algebraic equation is satisfied by the dynamic system even for inconsistent initial conditions and for all time thereafter.

scholarly journals NonlinearL2-Gain Analysis of Hybrid Systems in the Presence of Sliding Modes and Impacts

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
T. Osuna ◽  
O. E. Montano ◽  
Y. Orlov
Keyword(s):  
Sliding Mode ◽  
Numerical Study ◽  
Sufficient Conditions ◽  
Disturbance Attenuation ◽  
Sliding Modes ◽  
Time Dynamics ◽  
Attenuation Level ◽  
Disturbance Factor ◽  
Disturbance Attenuation Level ◽  
The Impact

TheL2-gain analysis is extended towards hybrid mechanical systems, operating under unilateral constraints and admitting both sliding modes and collision phenomena. Sufficient conditions for such a system to be internally asymptotically stable and to possessL2-gain less than ana priorigiven disturbance attenuation level are derived in terms of two independent inequalities which are imposed on continuous-time dynamics and on discrete disturbance factor that occurs at the collision time instants. The former inequality may be viewed as the Hamilton-Jacobi inequality for discontinuous vector fields, and it is separately specified beyond and along sliding modes, which occur in the system between collisions. Thus interpreted, the former inequality should impose the desired integral input-to-state stability (iISS) property on the Filippov dynamics between collisions whereas the latter inequality is invoked to ensure that the impact dynamics (when the state trajectory hits the unilateral constraint) are input-to-state stable (ISS). These inequalities, being coupled together, form the constructive procedure, effectiveness of which is supported by the numerical study made for an impacting double integrator, driven by a sliding mode controller. Desired disturbance attenuation level is shown to satisfactorily be achieved under external disturbances during the collision-free phase and in the presence of uncertainties in the transition phase.

Artificial and Natural Intelligence Techniques as IoP- and IoT-Based Technologies for Sustainable Farming and Smart Agriculture

2021 ◽  
pp. 40-53
Author(s):  
Vardan Mkrttchian
Keyword(s):  
Sliding Mode ◽  
Research Community ◽  
End User ◽  
Sustainable Farming ◽  
Model Driven ◽  
Blockchain Technology ◽  
Challenges And Opportunities ◽  
Intellectual Control ◽  
New Challenges ◽  
Smart Agriculture

In this chapter, the author describes the main new challenges and opportunities of blockchain technology for digital economy in Russia. The study in Russia showed that the Russian research community has not addressed a majority of these challenges, and he notes that blockchain developer communities actively discuss some of these challenges and suggest myriad potential solutions. Some of them can be addressed by using private or consortium blockchain instead of a fully open network. In general, the technological challenges are limited at this point, in terms of both developer support (lack of adequate tooling) and end-user support (hard to use and understand). The recent advances on developer support include efforts by of the towards model-driven development of blockchain applications sliding mode in intellectual control and communication and help the technological challenges and created tools. The chapter shows how avatars may communicate with each other by utilizing a variety of communications methods for sustainable farming and smart agriculture.

scholarly journals Autopilot Design for a Compound Control Small-Scale Solid Rocket in the Initial Stage of Launch

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Tian Dong ◽  
Changjian Zhao ◽  
Zhiguo Song
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
System Stability ◽  
Small Scale ◽  
Control Law ◽  
Rolling Moment ◽  
Mode Control ◽  
Compound Control ◽  
Initial Stage ◽  
Solid Rocket

In this paper, an autopilot design method for a compound control small-scale solid rocket is proposed. The rocket has multiple actuators, including a flexible nozzle for pitching and yawing channels, aerodynamic fins for rolling channel, and lateral thrusters which work in on-off mode for all three channels. In order to keep the aircraft steady in the initial stage of launch when the dynamic pressure is low, the autopilot is aimed at optimizing the cooperation among the actuators. Firstly, without considering the discontinuous lateral thrust, the control law for flexible nozzle and aerodynamic fins is achieved via the sliding mode control approach. On this basis, an object to be controlled with choiceness is obtained for the lateral thrusters controlled loop. Secondly, the operation logic of lateral thrusters is programmed, regarding rolling moment as priority. Thirdly, after a continuous controller is obtained, a discretization method for the lateral thrusters control law is designed combining the characteristics of sliding mode control and Lyapunov’s stableness theorem. Finally, the fundamental cause why compound control improves the system stability is given theoretically. Simulation results validate the improved response performance and robustness against uncertainties and disturbance of the autopilot.

Dynamic Analysis and Sliding Mode Impedance Control of a Robot Manipulator Subject to Impact/Contact With an Arbitrary Environment

2010 ◽  
Author(s):  
Masih Mahmoodi ◽  
Mehrdad Farid ◽  
Mohammad Eghtesad
Keyword(s):  
Abrupt Change ◽  
Sliding Mode ◽  
Robot Manipulator ◽  
Impedance Control ◽  
Contact Dynamics ◽  
Simulation Studies ◽  
Environment Impact ◽  
Contact Phenomenon ◽  
Simulation Results ◽  
Contact Impact

In this paper, dynamic equations of a robot manipulator subject to compliant contact/impact with the environment are derived using nonlinear elastodynamic approach. Then, a sliding mode impedance algorithm is proposed to control compliant impact/contact dynamics of the robot manipulator with an arbitrary environment. Impact/contact phenomenon can be regarded as a perturbation due to an abrupt change of system’s velocity. Thus the need to have robust characteristics in such systems especially after impact seems to be evident. The performance of the proposed controller is compared against standard second order impedance controller through numerical simulation studies. Finally, simulation results are provided to show the effectiveness of the proposed algorithm.

Primer interfaced algorithm for non-linear optimization of engineering systems

2007 ◽  
Vol 221 (8) ◽  
pp. 955-960 ◽  
Author(s):  
G S Hegde ◽  
G M Madhu
Keyword(s):  
Optimization Problems ◽  
Linear Optimization ◽  
Numerical Algorithms ◽  
Engineering System ◽  
Engineering Systems ◽  
Non Linear ◽  
Multiple Variables ◽  
Accuracy Of Results ◽  
Decision Vector ◽  
System Designs

Majority of engineering system designs are deemed to be optimization problems with unknown multiple variables that are more than the known information and data. Several numerical algorithms have been evolved in the past half a decade in an attempt to improve the accuracy of results. The aim of this paper is to provide a perfect solver for the non-linear, single objective, and multi-variable optimization problems. The algorithm termed primer interfaced algorithm for non-linear optimization (PIANO) is a resolved solution methodology based on Hegde's primer value theorem. The methodology is formulated and developed by computing a primer adapter, which is interfaced with coefficient of the terms of constraints and objective functions to arrive at the decision vector. To demonstrate the procedure, two problems from the mechanics of structure are considered as exercises. The results are compared with the results recently published in the literature. The chosen examples for the optimization are a four bar truss and a simply supported beam with uniformly distributed load. The results of PIANO are compared with the results of fuzzy dynamic programming, and crisp optimal solutions are reported in the literature. The authors are sure of absolute contained perfection in the application of PIANO. To the authors' understanding, PIANO is original, new, and different.

scholarly journals PRODUCT QUALITY AT DESIGN STAGE

2020 ◽  
Vol 2020 (2) ◽  
pp. 11-18 ◽  
Author(s):  
Victor Tikhomirov ◽  
Mikhail Izmerov ◽  
Mikhail Shalygin
Keyword(s):  
Product Quality ◽  
Friction Angle ◽  
Design Stage ◽  
Friction Unit ◽  
Time Behavior ◽  
Engineering Systems ◽  
System Behavior ◽  
Environment Impact ◽  
Friction Process ◽  
The Impact

The purpose of the work consists in the presentation to the scientific community a special methodology for tribo-system designing, where a design process interacts with the analysis of possible behavior of a friction angle while operating specified technical conditions taking into account an environment impact that is taking into account a forecasting of tribo-system behavior under specified conditions. For that the best possibility is the creation of the computer model of a friction unit with the estimate of its time behavior during the impact of outer parameters upon it and the impact of inner factors, for this purpose a design-engineer must have competences in different fields of science and technology. Besides, a designer must develop procedures for replacement, restoration and repair to support an operating status of the equipment under development for the whole life required. A basic method of friction process investigations is a computer modeling of friction unit behavior. The result and investigation novelty is the development of a special methodology for designing technical systems taking into account the simulation of their evolution ensuring product quality at the designing stage. In such a way there are shown principles for machinery quality assurance during designing engineering systems.

scholarly journals Fish-protecting Complex of a Water-engineering System

2013 ◽  
pp. 67-81
Author(s):  
Keyword(s):  
Experimental Research ◽  
Engineering System ◽  
Engineering Systems ◽  
Natural Reproduction ◽  
Fish Tracking ◽  
Pass Through ◽  
Water Work

Possible approaches to making fish-protecting complexes on water-engineering systems that enable to rehabilitate natural reproduction of pass-through and half pass-through species of fish and guarantee safe exploitation of water-work facilities of different purpose are considered. New versions of engineering solutions on upgrading of classical fish-running constructions and fish-tracking are put forward. Mathematical supports for offered engineering solutions are given. The results of experimental research are presented.

scholarly journals Efficient and Novel voltage control method using DC-DC Cuk Converter under Load Variation

2019 ◽  
Vol 3 (2) ◽  
Author(s):  
Syed Mujtaba Mahdi Mudassir ◽  
Faheem Ahmed Khan ◽  
Shaziya Sultana
Keyword(s):  
Control System ◽  
Closed Loop ◽  
Sliding Mode ◽  
Loop System ◽  
Control Mode ◽  
System Response ◽  
Switching Function ◽  
Sliding Modes ◽  
Closed Loop System ◽  
Cuk Converter

A control system is a set of mechanical or electronic devices that regulates other devices or systems by way of control loops. Typically, control systems are computerized. The mode of operation in a Control System where controlling variables is a function of the system and the structure is changed knowingly according to set of rules, which are already declared: for example a sensor based  system, is called as sliding control mode where the feedback control system response is limited and revolves around surface in the space to a point of equilibrium. In this mode of schemes, a switching variable dictates which form of control is to be used at a given instant, depending on the position of the state from the surface. First a set of points for which the switching function is null is used called as sliding surface. Sliding Mode Control (SMC) is a very robust technique which can handle sudden and large changes in dynamics of the system which can be applied to many areas like controlling of motor, aircraft and spacecraft, process control and power systems. SMC is one of the best tool in the industry to design controllers for the systems which has variable values, and provides robust properties against matched uncertainties, However,this use of SMC can only be achieved after the occurrence of the sliding mode. Before the occurrence of the switching function as null i.e. during the reaching phase, the system is affected by even matched ones. Several first order SMC applications for linear and nonlinear systems can be found in the literature [1]. Hence to eliminate the reaching phase and to make sure the ruggedness of the system throughout the entire closed-loop system response Integral Sliding Modes are used. In this paper a design procedure for sliding mode controllers for better control of voltage is applied, and then the ideas implemented are extended to all integral sliding modes in order to ensure optimum operation of entire system response[2]. Necessary conditions for the existence of sliding modes are also given. The closed-loop system is also proved to be exponentially stable. Simulation and experimental tests using the prototype of controlled DC-DC  CUK converter were performed to validate the proposed control approach.

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