scholarly journals Adaptive and Nonlinear Control Techniques Applied to SEPIC Converter in DC-DC, PFC, CCM and DCM Modes Using HIL Simulation

Energies ◽  
2018 ◽  
Vol 11 (3) ◽  
pp. 602 ◽  
Author(s):  
Arthur Rosa ◽  
Thiago de Souza ◽  
Lenin Morais ◽  
Seleme Seleme
Keyword(s):  
Nonlinear Control ◽  
Control Techniques ◽  
Hil Simulation

Nonlinear Control Techniques for a SMA Active Ankle Foot Orthosis

2007 ◽  
Author(s):  
Ehsan Tarkesh ◽  
Mohammad Elahinia
Keyword(s):  
Nonlinear Control ◽  
Sliding Mode ◽  
Nonlinear Behavior ◽  
Good Alternative ◽  
Switching Control ◽  
Experimental Result ◽  
Ankle Foot Orthosis ◽  
Control Techniques ◽  
Slow Walking ◽  
Foot Orthosis

This paper is aimed toward the development and evaluation of a novel active ankle foot orthosis (AAFO) based on shape memory alloy (SMA) actuators. This device intends to fill the gap in the existing research aimed at helping patients with drop foot muscle deficiencies as well as rehabilitation activities. To check the feasibility of this idea, a brief study is done on the dynamic behavior of ankle joint and then an SMA manipulator with a similar biological concept is used for experiment. Nonlinear behavior of SMA wires requires nonlinear control techniques such as Sliding Mode Controller (SMC) for tracking the desired ankle angle. Simulation results of three different techniques are compared (PID, SMC and SMC-PID) and finally the experimental result of a SMC-PID switching control is provided. This results shows that a switching control between simple PID and Sliding Mode Control can be a good alternative to follow the desired trajectory in slow walking cycles.

scholarly journals SHIL and DHIL Simulations of Nonlinear Control Methods Applied for Power Converters Using Embedded Systems

Electronics ◽  
2018 ◽  
Vol 7 (10) ◽  
pp. 241 ◽  
Author(s):  
Arthur Rosa ◽  
Matheus Silva ◽  
Marcos Campos ◽  
Renato Santana ◽  
Welbert Rodrigues ◽  
...  
Keyword(s):  
Embedded Systems ◽  
Nonlinear Control ◽  
Real Time ◽  
Digital Signal Processor ◽  
High Performance ◽  
Power Converters ◽  
Digital Signal ◽  
Simulation Method ◽  
Hardware In The Loop ◽  
Control Techniques

In this work, a new real-time Simulation method is designed for nonlinear control techniques applied to power converters. We propose two different implementations: in the first one (Single Hardware in The Loop: SHIL), both model and control laws are inserted in the same Digital Signal Processor (DSP), and in the second approach (Double Hardware in The Loop: DHIL), the equations are loaded in different embedded systems. With this methodology, linear and nonlinear control techniques can be designed and compared in a quick and cheap real-time realization of the proposed systems, ideal for both students and engineers who are interested in learning and validating converters performance. The methodology can be applied to buck, boost, buck-boost, flyback, SEPIC and 3-phase AC-DC boost converters showing that the new and high performance embedded systems can evaluate distinct nonlinear controllers. The approach is done using matlab-simulink over commodity Texas Instruments Digital Signal Processors (TI-DSPs). The main purpose is to demonstrate the feasibility of proposed real-time implementations without using expensive HIL systems such as Opal-RT and Typhoon-HL.

Linear and Nonlinear Control Techniques for a Three-Phase Three-Level NPC Boost Rectifier

2006 ◽  
Vol 53 (6) ◽  
pp. 1908-1918 ◽  
Author(s):  
Loubna Yacoubi ◽  
Kamal Al-Haddad ◽  
Louis-A. Dessaint ◽  
Farhat Fnaiech
Keyword(s):  
Nonlinear Control ◽  
Control Techniques ◽  
Three Phase ◽  
Linear And Nonlinear ◽  
Boost Rectifier

Nonlinear Control Techniques

2002 ◽  
pp. 121-167
Author(s):  
Ben M. Chen ◽  
Tong H. Lee ◽  
Venkatakrishnan Venkataramanan
Keyword(s):  
Nonlinear Control ◽  
Control Techniques

scholarly journals Furuta's Pendulum: AConservativeNonlinear Model for Theory and Practise

2010 ◽  
Vol 2010 ◽  
pp. 1-29 ◽  
Author(s):  
J. Á. Acosta
Keyword(s):  
Nonlinear Control ◽  
Automatic Control ◽  
Dynamic Model ◽  
Classical Mechanics ◽  
Dynamical Model ◽  
Integrals Of Motion ◽  
Control Techniques ◽  
Nonlinear Controllers ◽  
Control Community ◽  
Practical Model

Furuta's pendulum has been an excellent benchmark for the automatic control community in the last years, providing, among others, a better understanding of model-based Nonlinear Control Techniques. Since most of these techniques are based on invariants and/or integrals of motion then, the dynamic model plays an important role. This paper describes, in detail, the successful dynamical model developed for the available laboratory pendulum. The success relies on a basic dynamical model derived from Classical Mechanics which has been augmented to compensate thenon-conservativetorques. Thus, thequasi-conservative“practical” model developed allows to design all the controllers as if the system was strictlyconservative. A survey of all the nonlinear controllers designed and experimentally tested on the available laboratory pendulum is also reported.

A method for PID controller tuning using nonlinear control techniques

AIChE Journal ◽  
2005 ◽  
Vol 51 (12) ◽  
pp. 3292-3299 ◽  
Author(s):  
Prashant Mhaskar ◽  
Nael H. El-Farra ◽  
Panagiotis D. Christofides
Keyword(s):  
Nonlinear Control ◽  
Pid Controller ◽  
Controller Tuning ◽  
Control Techniques ◽  
Pid Controller Tuning
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