Controller architectures for switching (original) (raw)
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Youla-Kucera Control Structures for Switching
2018 IEEE Conference on Control Technology and Applications (CCTA), 2018
This paper explores the different controller structures in connection with Youla-Kucera (YK) parameterization to provide stable controller reconfiguration. Mathematical stability proof is given for each of the structures. Even if stability is guaranteed, transient effects of switching between controllers can become important for the system performance. Thus, transient behavior depending on the control structure is also analysed. A comparative study is carried out among all the structures, so guidelines are given on how to choose the appropriate YK control structure.
On the Switching Controllers' Issue
2007 2nd International Workshop on Soft Computing Applications, 2007
The paper is discussing the dangerous instability that may occur in the switching controllers' case. This phenomenon cannot be treated by the conventional frequency analysis because of the non-null initial conditions. The qualitative phase trajectory analyze of the difference between the controllers outputs is used instead. The second and the fourth quadrants of the phase plane are recommended for switching, while the first and the third quadrants must be avoided. An analogy with the sliding mode method is proposed and three workbench studies are provided. The phenomenon is framed into the Postmodernist context.
Switching between multivariable controllers
… Control Applications and …, 2004
A concept for implementation of multivariable controllers is presented in this paper. The concept is based on the Youla-Jabr-Bongiorno-Kucera (YJBK) parameterization of all stabilizing controllers. Using this scheme for implementation of multivariable controllers, it is shown how it is possible to smoothly switch between multivariable controllers with guaranteed closed-loop stability. This includes also the case where one or more controllers are unstable.
An architecture for implementation of multivariable controllers
American Control Conference, 1999. …, 1999
An architecture for implementation of multivariable controllers is presented in this paper. The architecture is based on the Youla-Jabr-Bongiorno-Kucera parameterization of all stabilizing controllers. By using this architecture for implementation of multivariable controllers, it is shown how it is possible to change from one multivariable controller to another multivariable controller online in a smooth way with guarantee for closed loop stability. This includes also the case where the controllers are unstable. Gain scheduled controllers can be implemented in this architecture.
An introduction to the control of switching electronic systems
Annual Reviews in …, 2010
Control technology underpins the operation of many, and arguably all, modern high technology systems. Such systems include transportation (aircraft, high speed trains, marine vessels, automobiles), telecommunication systems, electricity networks, mining, minerals processing and agriculture. A particular area where control is playing an increasingly important role is industrial electronics. In this paper we will give a tutorial introduction to the application of control engineering concepts to such systems and reflect on the opportunities and challenges that exist in this area.
VHDL Implementation of a prototype switching system
2013
Switching system implies data transmission between two communicating entities. This transmission can be either via trunks or it can be completely wireless, technically termed as Telephone Switching and Mobile switching, respectively. We report the implementation of a switching system using very high speed integrated circuit hardware description language (VHDL) which is more reliable and efficient than the present switching system. It converts entire bulky switching unit which consists of routers, multiplexers, decoders, counters in to a single integrated circuit (IC). Simulation results are presented for transfer of data from input subscriber to the output subscriber using sequential write /random read mode with the timing diagram. To verify the transfer of data from input subscriber to the output subscriber a 16 bit op-code is assumed in which each bit represents a specific function.
AIP Conference Proceedings, 2009
The paper is discussing the measures able to reject the instability that may unexpectedly appear in particular conditions, in switching controllers applications. The switching controllers' effect is explained by the combined effects of the unsuitable choice of the switching moments (in the first or third quadrants of the phase trajectory of the switching error) and of the temporal aliasing that can distort the digital control systems when the sampling rate is close to the frequency of the oscillations that are produced by the commutation. The correct switching moments are located into the second and fourth quadrants of the phase trajectory of the switching error, but an active preparation of the commutation may be simply achieved by using a tracking controller, that is driving the output of open loop controller to follow the output of the close loop controller, permanently minimizing the switching error. Simulations issued from a dc driver speed controller and from an aircraft are provided.
IMPLEMENTATION OF PROGRAMMABLE ELECTRONIC SWITCHING SYSTEM THROUGH VHDL
In this paper we are going to implement the programmable electronic switching system with the help of VHDL. The software we are using is XILINX version. There are three types of modeling used in VHDL, but here we are using behavior style of modeling. We have design different units: data memory, control memory input and output gates, counters, which performs their respective functions in order to connect input to the output subscriber
A survey on control implementation scheme
INTERNATIONAL JOURNAL OF ADVANCE RESEARCH, IDEAS AND INNOVATIONS IN TECHNOLOGY
In today's computer age, the processor plays a major role. The processor is the heart of the computer. These are the days where Nano components play a major role. Hence there is a need for a processor's size to be reduced and an effective control implementation scheme is necessary. Hence, this paper made a survey on how to implement an effective control scheme. It helps the computer architects in choosing the better control implementation scheme while designing a processor for equipment like laptops, mobile phones, Personal computers etc.
Switching systems: controllability and control design
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