Mathematical Models and Stability of Linear System in the Presence of Control Saturations

2003 ◽  
Author(s):  
Shuli Guo ◽  
Shaoze Yan ◽  
Lin Huang
Keyword(s):  
Control System ◽  
Linear System ◽  
Mathematical Models ◽  
Equilibrium Points ◽  
New Method ◽  
Saturation Function ◽  
Whole Space

In this paper, a new method for the control system with saturation inputs is given. By defining saturation function, the whole space is divided into 3m intervals and relationships among equilibrium points and intervals are established. The equilibrium points are discussed for the linear system under saturated inputs.

Design and Simulation of Electric Pallet Truck Hydraulic Anti-Skid System

2010 ◽  
Vol 37-38 ◽  
pp. 299-303
Author(s):  
Guo Ping Li ◽  
Lu Wei Wang ◽  
Li Sheng Shu
Keyword(s):  
Control System ◽  
Control Theory ◽  
Mathematical Models ◽  
New Method ◽  
Matlab Simulink ◽  
Software Simulation ◽  
Driving Wheel ◽  
Simulation Results ◽  
Attachment Coefficient

Based on electric pallet truck skids in the process of moving because of low road attachment coefficient, this paper proposed an anti-skid method by changing the proportion of enduring pressure between the driving wheel and trundles. Anti-skid control theory of the new method is researched and mathematical models of the main modules are established. Anti-skid control system is simulated by using AMESim and Matlab / Simulink software. Simulation results show that, this hydraulic anti-skid system can respond quickly and precisely.

Time Synchronization in Tandem Hot Strip Line Based on Improved Broadcast Mode

2013 ◽  
Vol 341-342 ◽  
pp. 679-683
Author(s):  
Jian Zhao Cao ◽  
Dian Hua Zhang
Keyword(s):  
Control System ◽  
Process Control ◽  
Time Synchronization ◽  
Process Control System ◽  
New Method ◽  
Strip Line ◽  
Total Delay ◽  
Synchronization Problem ◽  
Hot Strip ◽  
Distributed Process

In order to solve the time synchronization problem in tandem hot strip line, the traditional algorithm of time synchronization was analyzed, and the server-client mode was compared with the broadcast mode using multithread technology, then the present paper improved the broadcast mode to improve its precision. The new method can estimate total delay including clock offset and network transmission time. A simple, easy and little loading time synchronization method was designed for the distributed process control system of tandem hot strip line. The new method was applied in domestic some tandem hot strip line successfully which showed that it could meet the demands of process control system with little expenses, simple structure and high precision.

scholarly journals Air Temperature Control System in a Building on the Basis of Mathematical Modelling

2018 ◽  
Vol 155 ◽  
pp. 01041 ◽  
Author(s):  
Aleksandr Pilipenko ◽  
Sergei Petrov
Keyword(s):  
Computer Simulation ◽  
Control System ◽  
Mathematical Modelling ◽  
Mathematical Models ◽  
Air Temperature ◽  
Temperature Control ◽  
Automated System ◽  
Temperature Control System ◽  
Heating Systems ◽  
The Cost

In the article the authors solve a crucial objective of reducing the cost of heating services through the introduction of a system, controlling boilers and heating devices, based on modelling of the building and predicting heating systems functioning and operation. The authors describe the method of mathematical modelling of heating systems of the building and represent the developed mathematical models, pledged and installed into the developed automated system. The authors have offered an automated system of dispatch control of the boilers with the elements of computer simulation and modelling.

Smart Control of DC Servo Motor Based on Fussy-PID

2014 ◽  
Vol 950 ◽  
pp. 263-267
Author(s):  
Xi Juan Wang ◽  
Wan Ming Xu ◽  
Yong Qiang Wu ◽  
Hai Yan Gao
Keyword(s):  
Control System ◽  
Mathematical Models ◽  
Direct Current ◽  
Pid Control ◽  
Time Varying ◽  
Servo Motor ◽  
Basic Algorithm ◽  
Smart Control

Conventional PID control system of Direct Current (DC) servo motor is only suitable for the system which Mathematical models can be precisely expressed [1] And it can’t meet the demand of the nonlinear and time-varying system. In the paper, a control system based on fussy-PID is proposed. The basic algorithm of the fussy-PID is introduced firstly. And then the design of the fussy-PID control system is introduced. The results of the experiments have shown that the fussy-PID control system improved the performance of the DC servo motor..

scholarly journals Light and Temperature Control for Greenhouse Plant Growth

2021 ◽  
Vol 31 (1) ◽  
pp. 8-20
Author(s):  
Saken K. Sheryazov ◽  
Svetlana A. Popova
Keyword(s):  
Control System ◽  
Energy Consumption ◽  
Mathematical Models ◽  
Temperature Control ◽  
Control Algorithm ◽  
Block Diagram ◽  
Control Plant ◽  
Reduce Energy Consumption ◽  
Supplementary Lighting ◽  
Growing Conditions

Introduction. The article deals with the conditions for growing greenhouse plants. Supplementary lighting supports the process of plant photosynthesis and the microclimate in the greenhouse. The authors suggest the ways to reduce energy consumption in greenhouses by controlling the microclimate and process of supplementary lighting in greenhouses. Materials and Methods. Special lighting and temperature are required for growing greenhouse plants. A method of efficient plant growing is light and temperature control. The development of a control algorithm requires the mathematical models that relate the process of photosynthesis to the microclimate parameters. There are given the mathematical models based on the experimental data. Results. The control system and algorithm to control plant-growing conditions have been developed to maintain the greenhouse microclimate. LED lamps are used to control the lighting process. The authors present the developed block diagram of the control system, which contains four channels responsible for the main energy-intensive microclimate factors. The description of the algorithm of the greenhouse light-temperature control is given. Discussion and Conclusion. In conclusion, the need to maintain the greenhouse microclimate and supplementary lighting with the different radiation spectrum for the efficient cultivation of greenhouse plants is shown. The developed structure and control algorithm for the supplementary plant lighting process and greenhouse illumination through using LED lamps help reduce energy consumption.

A new method for solving an arbitrary fully fuzzy linear system

2013 ◽  
Vol 17 (9) ◽  
pp. 1725-1731 ◽  
Author(s):  
S. Moloudzadeh ◽  
T. Allahviranloo ◽  
P. Darabi
Keyword(s):  
Linear System ◽  
New Method ◽  
Fully Fuzzy Linear System ◽  
Fuzzy Linear System

scholarly journals Stability and stabilization of linear positive systems on time scales

Positivity ◽  
2020 ◽  
Vol 24 (5) ◽  
pp. 1361-1372
Author(s):  
Zbigniew Bartosiewicz
Keyword(s):  
Control System ◽  
Linear System ◽  
Time Scale ◽  
Sufficient Conditions ◽  
Positive Control ◽  
Positive Systems ◽  
The Matrix ◽  
Exponentially Stable ◽  
Stability And Stabilization ◽  
Necessary And Sufficient

Abstract It is shown that a positive linear system on a time scale with a bounded graininess is uniformly exponentially stable if and only if the characteristic polynomial of the matrix defining the system has all its coefficients positive. Then this fact is used to find necessary and sufficient conditions of positive stabilizability of a positive control system on a time scale.

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