scholarly journals Estimation Of The Gross Output Vector Of Inter-Sectoral Balance Of Macroeconomic System

2020 ◽  
Author(s):  
D. V. Ivanov
Keyword(s):  
Output Vector

scholarly journals Actuator fault diagnosis for flat systems: A constraint satisfaction approach

2013 ◽  
Vol 23 (1) ◽  
pp. 171-181 ◽  
Author(s):  
Ramatou Seydou ◽  
Tarek Raissi ◽  
Ali Zolghadri ◽  
Denis Efimov
Keyword(s):  
Fault Detection And Isolation ◽  
System Model ◽  
Actuator Faults ◽  
Consistency Test ◽  
Output Vector ◽  
Flat Systems ◽  
Set Membership ◽  
Tank System ◽  
Derivatives Of ◽  
Estimator Design

This paper describes a robust set-membership-based Fault Detection and Isolation (FDI) technique for a particular class of nonlinear systems, the so-called flat systems. The proposed strategy consists in checking if the expected input value belongs to an estimated feasible set computed using the system model and the derivatives of the measured output vector. The output derivatives are computed using a numerical differentiator. The set-membership estimator design for the input vector takes into account the measurement noise thereby making the consistency test robust. The performances of the proposed strategy are illustrated through a three-tank system simulation affected by actuator faults.

TOTAL LEAST SQUARES FOR ESTIMATION OF THE GROSS OUTPUT VECTOR

2020 ◽  
Author(s):  
Dmitriy Vladimirovich Ivanov ◽  
Keyword(s):  
Least Squares ◽  
Least Squares Method ◽  
Direct Costs ◽  
Total Least Squares ◽  
Test Cases ◽  
Output Vector ◽  
Final Consumption ◽  
The Matrix

The article proposes the estimation of the gross output vector in the presence of errors in the matrix of direct costs and the final consumption vector. The article suggests the use of the total least squares method for estimating the gross output vector. Test cases showed that the accuracy of the proposed estimates of the gross output vector is higher than the accuracy of the estimates obtained using the classical least squares method (OLS).

Self-Tuning Manipulator Control in Cartesian Base Coordinate System

1985 ◽  
Vol 107 (4) ◽  
pp. 316-323 ◽  
Author(s):  
A. J. Koivo
Keyword(s):  
Coordinate System ◽  
Digital Simulation ◽  
External Input ◽  
Input Vector ◽  
Unknown Parameters ◽  
Output Vector ◽  
Self Tuning ◽  
On Line ◽  
Cartesian Coordinate ◽  
Manipulator Control

A discrete-time stochastic model for the motion of a robotic manipulator system is introduced. The input vector consists of the voltages to the joint motors, and the output vector has the velocities (positions) of the gripper expressed in the world (xyz) coordinate system as the components. The model is a linear multivariate autoregressive model with external input. The unknown parameters of the model can be calculated recursively on-line by the least squares algorithm. An adaptive self-tuning type controller is then designed by minimizing the expected value of a quadratic criterion. This performance index penalizes the deviations of the actual path of the gripper from the desired values expressed in the Cartesian coordinate system and the use of the energy associated with the input vector. Digital simulation results using the parameter estimation and the control algorithms are presented, and discussed.

scholarly journals Optimal Output Vector Feedback Control Strategy for Wind Power Systems

2015 ◽  
Vol 43 (8-10) ◽  
pp. 1122-1132
Author(s):  
Shahida Khatoon ◽  
Ibraheem Nasiruddin ◽  
Reshma Ehtesham ◽  
Ramesh C. Bansal
Keyword(s):  
Feedback Control ◽  
Power Systems ◽  
Wind Power ◽  
Control Strategy ◽  
Output Vector ◽  
Optimal Output ◽  
Wind Power Systems ◽  
Feedback Control Strategy

Investigation of Wrench Accuracy for Parallel Manipulators

2016 ◽  
Author(s):  
Leila Notash
Keyword(s):  
Parallel Manipulators ◽  
Coefficient Matrix ◽  
Solution Set ◽  
Output Vector ◽  
Discrete Method ◽  
Interval Linear ◽  
Closed Line ◽  
Interval Linear Systems ◽  
Real Linear ◽  
The Given

In this paper, the wrench accuracy for parallel manipulators is examined and the solution sets of actuator forces/torques are investigated under variations in parameters and data. The subset of solution set that produces platform wrenches within the required lower and upper bounds are modeled using discrete and analytical methods. In addition, the formulation of the solutions that provide any platform wrench within the defined interval is examined. Intersection of these two sets, if any, results in the given interval platform wrench. Moreover, the dependency among the entries of the interval linear systems and its effect on the solution set is considered. The discrete method is based on the discretization of solution set enclosure and validation at each increment, or the collection of the solutions of real linear relations for the discretized interval coefficient matrix and output vector. The analytical method for each solution set is based on the intersection of the pertinent closed half-spaces or the assembly of closed line segments that encompass the solution. Implementation of the methods to identify the solution for actuator forces/torques is presented on example parallel manipulators.

scholarly journals Connection of Two Conventional Enhanced to Encrypt Color Images

2021 ◽  
Author(s):  
Said Hraoui ◽  
Abdellatif JarJar
Keyword(s):  
Color Image ◽  
Chaotic Map ◽  
Color Images ◽  
Encryption Algorithm ◽  
Translation Vector ◽  
Kronecker Products ◽  
Color Image Encryption ◽  
Differential Attack ◽  
Output Vector ◽  
Image Encryption Algorithm

This document introduces a new cryptosystem mixing two improvement standards generally used for text encryption, in order to give birth a new color image encryption algorithm capable of dealing with known attacks. Firstly, two substitution matrixes attached to a strong replacement function will be generated for advanced Vigenere technique application. At the end of this first round, the output vector is subdivided into size blocks according to the used chaotic map, for acting a single enhanced Hill circuit insured by a large inversible matrix. A detailed description of such a large involutive matrix constructed using Kronecker products will be given. accompanied by a dynamic translation vector to eliminate any linearity. A solid chaining is established between the encrypted block and the next clear block to avoid any differential attack. Simulations carried out on a large volume of images of different sizes and formats ensure that our approach is not exposed to any known attacks.

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