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Ozana Almeida Lessa,Nadabe dos Santos Reis,Selma Gomes Ferreira Leite,Melissa Limoeiro Estrada Gutarra,Alexilda Oliveira Souza,Simone Andrade Gualberto,Julieta Rangel de Oliveira,Elizama Aguiar-Olivei 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.1
During cocoa (Theobroma cacao L.) processing, the accumulated cocoa shell can be used for bioconversion to obtain valuable compounds. Here, we evaluate the effect of solid-state fermentation of cacao flour with Penicillium roqueforti on secondary metabolite composition, phenol, carotenoid, anthocyanin, flavonol, and fatty acids contents, and antioxidant activity. We found that the total concentrations of anthocyanins and flavonols did not change significantly after fermentation and the phenolic compound and total carotenoid concentrations were higher. The fermentation process produced an increase in saponin concentration and antioxidant activity, as well as significant changes in the levels of oleic, linoleic, gamma-linolenic, and saturated fatty acids. Based on our findings, we propose that the reuse of food residues through solid state fermentation is viable and useful.
Dynamic Optimization of Guided Missile Trajectory by Use of Matlab and Dynopt Toolbox
Stepan Ozana,Martin Pies,Petr Wagner 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10
The paper deals with analysis of case study concerning dynamic optimization problem using Dynopt Toolbox. Particularly it focuses on problem with free time and free end point represented by example of guided missile control in two alternatives. The paper introduces Dynopt as powerful tool for most type of dynamic optimization problem, describing the way how the problem is formulated to be ready for Dynopt syntax.
Design of Deadbeat Controller by Polynomial Approach
Stepan Ozana,Martin Pies,Radovan Hajovsky 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10
The paper deals with design of deadbeat controller, particularly with finite time optimal control and quadratic optimal control. It gives a mathematical background for both cases, then it presents case studies with the results and end with the sources codes for Matlab+Polynomial Toolbox.
Lessa, Ozana Almeida,Reis, Nadabe dos Santos,Leite, Selma Gomes Ferreira,Gutarra, Melissa Limoeiro Estrada,Souza, Alexilda Oliveira,Gualberto, Simone Andrade,de Oliveira, Julieta Rangel,Aguiar-Oliveir 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.1
During cocoa (Theobroma cacao L.) processing, the accumulated cocoa shell can be used for bioconversion to obtain valuable compounds. Here, we evaluate the effect of solid-state fermentation of cacao flour with Penicillium roqueforti on secondary metabolite composition, phenol, carotenoid, anthocyanin, flavonol, and fatty acids contents, and antioxidant activity. We found that the total concentrations of anthocyanins and flavonols did not change significantly after fermentation and the phenolic compound and total carotenoid concentrations were higher. The fermentation process produced an increase in saponin concentration and antioxidant activity, as well as significant changes in the levels of oleic, linoleic, gamma-linolenic, and saturated fatty acids. Based on our findings, we propose that the reuse of food residues through solid state fermentation is viable and useful.
Design and Implementation of LQR controller for Inverted Pendulum by use of REX Control System
Stepan Ozana,Martin Pies,Zdenek Slanina,Radovan Hajovsky 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10
The paper deals with design and implementation of LQR controller for physical model of inverted pendulum. It presents derivation of the full nonlinear mathematical model, its linearization leading to linear state-space description. The mathematical model is then used for design of LQR controller using Matlab. The control scheme is implemented in PAC (programmable automation controller) WinPAC-8000 with the use of REX Control System.
Application of two-point boundary problem with optimization of a candidate function
Tomas Docekal,Stepan Ozana 제어로봇시스템학회 2020 제어로봇시스템학회 국제학술대회 논문집 Vol.2020 No.10
The paper deals with the control design of nonlinear systems. It presents the application of the presented methodology on a swing-up of a single inverted pendulum. It is aimed at planning the reference state trajectories and the appropriate feedforward control signal and formulated by a two-point boundary value problem. One of the complications during the solution tackles the problem of providing a good initial guess for state trajectories. The additional optimization procedure for dealing with this issue is described in this paper. There is an emphasis on the universality of the described solution of the boundary value problem because it can be applied for a variety of different nonlinear systems.
Using Matlab for Thermal Processes Modeling and Prediction at Mining Dumps
Radovan Hajovsky,Blanka Filipova,Martin Pies,Stepan Ozana 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10
The paper deals with the modeling and prediction of thermal processes occurring in the old mining dumps in the Ostrava region. In this region there are many places that arose as a result of long-term mining industry in the past time. One of the most affected mine dumps is the Hedvika mine dump. Hedvika was founded around 1910 and registered in the end of the 50’s, and since this time mining dump has been burning and some effort has been done in putting the fire out. Nowadays, Hedvika is still very thermally active. In this paper the temperature distribution throughout the mining dump Hedvika area by used the Matlab interpolation functions is described.
Autonomous distributed control system strategy of rail vehicle for nuclear waste disposal
Jakub Nemcik,Filip Krupa,Zdenek Slanina,Stepan Ozana,Jiri Koziorek,Daniel Polak 제어로봇시스템학회 2020 제어로봇시스템학회 국제학술대회 논문집 Vol.2020 No.10
The long-term storage and disposal of radioactive waste is one of the major problems in nuclear energy. Deep geological disposal is widely agreed to be the best solution for storage of the radioactive waste. It is deposited in these repositories by conventional vehicles with human operator, which is exposed to radiation. For this reason, it is appropriate to develop new vehicles for the transport and storage of spent radioactive fuel that operates autonomously without the presence of an operator. Rail vehicles are most fitting type of transportation of the nuclear waste due high load capacity. The autonomous operation of this vehicles requires high demands on the control system, control strategy and safety. This article presents the design and implementation of distributed control system of rail vehicle for transport and storage of the waste. It includes the control system and strategy for coupling/decoupling and movement of connected vehicles. The control system is implemented in a programmable logic controller, which is widely used in industrial application.
Wireless Measurement of Carbon Monoxide Concentration
Martin Pies,Radovan Hajovsky,Stepan Ozana 제어로봇시스템학회 2014 제어로봇시스템학회 국제학술대회 논문집 Vol.2014 No.10
The paper deals with measurement of concentration of highly toxic carbon monoxide within the space of waste rock storage. This purpose gave origin to creation of units with integrated sensors of carbon monoxide that transmit measured concentration by means of wireless IQRF technology. The need of decreased power consumption implicated choice of electrochemical CO sensor connected to a special wireless technology named IQRF, working at 868 MHz frequency. Concentration is measured at two locations within waste rock dump. The paper analyzes consumption of energy spent on this type of measurement and it evaluates assumed endurance for battery-operated mode. Concentration of CO is sent to IQRF-AO converter that transfer the measured value to voltage level by means of double-channel DAC converter. This voltage is then brought to the inputs of telemetry unit that transmits the values of CO and other measured signals to a supervisor dispatching center.
The use of Neural Network for Nonlinear Predictive Control design for and Overhead Crane
Jakub Nemcik,Filip Krupa,Stepan Ozana,Zdenek Slanina,Ivan Zelinka 제어로봇시스템학회 2021 제어로봇시스템학회 국제학술대회 논문집 Vol.2021 No.10
The importance of nonlinear model predictive control (NMPC) implementations for industrial processes rises with the increasing of computational power in all hardware units used for regulation and control in practice. However, it assumes a sufficiently accurate model. In case of more complex systems, there might be problem to perform analytical identification. Instead of this, numerical approaches may be deployed with benefit. This paper deals with the design of NMPC for a nonlinear model of an overhead crane using a neural network and compares the solution with the one achieved with the use analytical model of the system. All steps of NMPC design and verification of functionality are performed in Matlab. The paper finally suggests possibility to extend the presented approach for hosting the NMPC algorithm on some real-time embedded target.