scholarly journals Control synthesis for tasks with a given output function decentralized SISO-systems

2021 ◽  
Vol 1027 ◽  
pp. 012023
Author(s):  
E Nikulchev
Keyword(s):  
Control Synthesis ◽  
Output Function ◽  
Siso Systems

Parameterization of output function for SISO systems

2008 ◽  
Author(s):  
Kazuma Sekiguchi ◽  
Mitsuji Sampei ◽  
Shigeki Nakaura
Keyword(s):  
Output Function ◽  
Siso Systems

scholarly journals CONTROL SYNTHESIS FOR TWO LOOPS DISCRET SYSTEM

2018 ◽  
pp. 22-26
Author(s):  
O. F. Opeiko
Keyword(s):  
Stability Domain ◽  
Pi Controller ◽  
Numerical Control ◽  
Control Synthesis ◽  
Control Loop ◽  
Time Period ◽  
Parameters Uncertainty ◽  
Loop Dynamics ◽  
The Stability ◽  
Siso Systems

The aim of this paper is the linear synthesis of two loops SISO systems with discreet time proportional integral (PI) controllers. This linear synthesis is dedicated for the systems with plant parameters uncertainty. The synthesis is based on the time scale method, providing the separate slow and fast components of the control low. The PI- controller parameters calculation is based on the modal control and plant model reduction. The conditions carried out for the each control loop dynamics still similar to the second order one. The discrete time microcontroller based numerical control restricts the stability domain of the system and each control loop in it. The stability domain of each loop is the round on the complex plane with radius, depending on the time period. Each inner loop must be more fast, then each outer one. Hence, in the outer loop the time period, required for the PI controller reaction computation, can be more then in the inner loop. This PI- controller parameter calculation method is approximate, and it is efficient for the systems, whose dynamics contains the slow and fast components. In particular, the electrical drives control systems contain the fast electromagnetic component and the slow mechanical part. The effectiveness of this method is illustrated by the example and simulation.

Parametrization of All Stabilizing LTI Controllers for Multirate SISO Systems

2008 ◽  
Author(s):  
M. Cimino ◽  
P. R. Pagilla
Keyword(s):  
Diophantine Equation ◽  
Computational Effort ◽  
Order System ◽  
Control Synthesis ◽  
Transform Method ◽  
Stabilizing Controllers ◽  
Lifting Technique ◽  
Sampling Operation ◽  
Multirate System ◽  
Siso Systems

In this work we provide a solution for the problem of parametrization of all stabilizing LTI controllers for multirate SISO systems. This problem has been previously addressed with the use of the lifting technique which can be utilized to convert a linear multirate system into a single-rate higher-order system. We propose a new procedure to solve the problem without lifting the multirate system. The new approach reduces the computational effort and restrict the solution to the set of all stabilizing LTI controllers. The non-commutative property of the down-sampling operation is the main obstacle to solve the problem. To overcome this difficulty we transform the problem by rewriting the controller transfer function using the modified Z-transform. This facilitates the separation of plant and controller dynamics in the closed-loop characteristic polynomial. Tools from the modified Z-transform method and control synthesis using the Diophantine equation are utilized to solve the problem for multirate systems. Moreover, by using the Diophantine equation the result is extended to the set of all stabilizing controllers for which the multirate system exhibits a dead-beat response.

scholarly journals A Brief Review on Solvent-Free Synthesis of Zeolites

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 788
Author(s):  
Jinlin Mei ◽  
Aijun Duan ◽  
Xilong Wang
Keyword(s):  
High Efficiency ◽  
Raw Materials ◽  
Solvent Free ◽  
High Yield ◽  
Control Synthesis ◽  
Mechanical Mixing ◽  
Synthesis Mechanism ◽  
Wastewater Pollution ◽  
Low Efficiency ◽  
Solvent Free Synthesis

The traditional hydrothermal method to prepare zeolite will inevitably use a large amount of water as a solvent, which will lead to higher autogenous pressure, low efficiency, and wastewater pollution. The solvent-free method can be used to synthesize various types of zeolites by mechanical mixing, grinding, and heating of solid raw materials, which exhibits the apparent advantages of high yield, low pollution, and high efficiency. This review mainly introduces the development process of solvent-free synthesis, preparation of hierarchical zeolite, morphology control, synthesis mechanism and applications of solvent-free methods. It can be believed that solvent-free methods will become a research focus and have enormous industrial application potential.

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