feedback equivalence
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2021 ◽  
Vol 69 (2) ◽  
pp. 142-154
Author(s):  
Michael Zauner ◽  
Philipp Mandl ◽  
Oliver König ◽  
Christoph Hametner ◽  
Stefan Jakubek

Abstract This contribution deals with the control of a battery emulator used in automotive testbeds for electric drivetrains. The battery emulator, which is realized as a DC-DC converter, is connected to a unit-under-test (UUT), e. g., an electric motor inverter. To accurately emulate the dynamic impedance of a battery, a highly dynamic output is required. Additionally, battery emulators should be applicable for a large variety of UUTs, hence robust performance in a large operating range is also required. This is especially challenging when the UUT behaves like a constant power load, as this can cause stability issues. To meet the requirements, a flatness-based control concept is presented that establishes feedback equivalence between a nonlinear and a linearized system representation. By examining the stability of the concept, an estimation of the region of attraction is found.







2017 ◽  
Vol 15 (1) ◽  
pp. 1495-1508 ◽  
Author(s):  
Noemí DeCastro-García

Abstract The approach to convolutional codes from the linear systems point of view provides us with effective tools in order to construct convolutional codes with adequate properties that let us use them in many applications. In this work, we have generalized feedback equivalence between families of convolutional codes and linear systems over certain rings, and we show that every locally Brunovsky linear system may be considered as a representation of a code under feedback convolutional equivalence.





2013 ◽  
Vol 448-453 ◽  
pp. 3635-3640
Author(s):  
Jing Li

We concern with the classification problem of generalized linear control systems, which might be useful for some engineering applications. Inspired by the work of Shayman and Zhou in 1987, we give the definition of linear, differentiable and topological equivalence for a special class of generalized linear systems in a unified way. Then we derive some properties on these three kinds of equivalences and show the canonical forms through a concrete example. In this paper, we obtain natural generalizationsof the Brunovsky's feedback equivalence theorem and the Willems' topological classification theorem for usual linear control systems.



2013 ◽  
Vol 62 (6) ◽  
pp. 475-481 ◽  
Author(s):  
Hector Ramirez ◽  
Bernhard Maschke ◽  
Daniel Sbarbaro


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