Sliding mode control of a bioreactor

Derdiyok, Adnan; Levent, Menderes

doi:10.1007/bf02699106

Cited by 9 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order for the closed loop system to be stable, an appropriate Lyapunov function can be selected as [27,28].…”

Section: Control 31 Sliding Mode Controllermentioning

confidence: 99%

Design of a Memristor-based Chattering Free Sliding Mode Controller and Speed Control of the BLDC Motor

Orman

2021

Teh. vjesn.

View full text Add to dashboard Cite

In this study, a memristor-based sliding mode controller (Mem-SMC) was designed for speed control of BLDC motor and the performance of the controller was tested in simulation. The sliding mode controller, known for its robustness against disturbances and parameter variations, was designed with a memristor known as a missing circuit element. Simulation results show that the proposed controller is successful in the speed reference tracking and is also able to respond quickly to sudden changes in the reference.

show abstract

“…In order for the closed loop system to be stable, an appropriate Lyapunov function can be selected as [27,28].…”

Section: Control 31 Sliding Mode Controllermentioning

confidence: 99%

Design of a Memristor-based Chattering Free Sliding Mode Controller and Speed Control of the BLDC Motor

Orman

2021

Teh. vjesn.

View full text Add to dashboard Cite

show abstract

“…From this perspective, traditional linear and nonlinear control methods have been proposed as good solutions. However, many studies from diferent felds [12,[16][17][18] have shown that nonlinear controllers outperform linear controllers in terms of disturbance rejection, small steady-state error, fast dynamic response, and low overshoot. Tus, the use of nonlinear control methods in a wide range of applications is rapidly broadening and growing at an unprecedented rate.…”

Section: Introductionmentioning

confidence: 99%

“…Since SMC improves the dynamic and static performances of systems such as buck converters and other power electronics circuits, it has been successfully applied to a wide range of linear and nonlinear systems besides power electronics, including bioreactor system, [17] robot manipulators, [29] coupled tank system, [18] and pendulum system [29]. However, it should be noted that SMC behaves diferently in the feld of power electronics because an ideal SMC means that the system should be operated at the highest possible switching frequency, which is unattainable in power electronics practical applications [4].…”

Section: Introductionmentioning

confidence: 99%

Modified Fast Terminal Sliding Mode Control for DC-DC Buck Power Converter with Switching Frequency Regulation

Balta

Güler

Altın

2022

International Transactions on Electrical Energy Systems

View full text Add to dashboard Cite

In this paper, a modified fast terminal sliding mode control (FTSMC) with a fixed switching frequency is proposed for regulating the output voltage of the DC-DC buck converters. The design steps of the proposed FTSMC such as the selection of sliding surface, switching control strategy, existence, robustness, and stability analysis are presented in detail. To overcome the variable switching frequency in FTSMC, a frequency control loop is designed. Moreover, the proposed FTSMC with fixed switching frequency can be implemented by using only one voltage sensor. Hence, the proposed control method not only offers a fast dynamic response and fixed switching frequency but also simplifies the controller design in practical implementation. The effectiveness of the proposed control methods has been investigated by experimental studies. The results reveal that the proposed methods exhibit a good performance under both steady-state and dynamic transients caused by the variations in load resistance, input voltage, and reference voltage. Moreover, the proposed method is compared with four existing methods.

show abstract

“…The classical industrial applications of SMC strategies are also extended to bioreactor control problems. Derdiyok and Levent (2000) consider the control of a bioreactor system by using both PID and SMC techniques and show the advantages of SMCs under large time delays. A mathematical model of a fed-batch fermentation process is obtained by Georgieva et al (2003), where an SMC with a boundary layer is used.…”

Section: Introductionmentioning

confidence: 99%

Sliding mode controlled bioreactor using a time-varying sliding surface

Tokat

2009

Transactions of the Institute of Measurement and Control

View full text Add to dashboard Cite

Bioreactor processes based on substrate concentration have both highly non-linear behaviour and parameter uncertainties mostly bounded with physical and biological constraints, which make them a subject area of sliding mode control. This work deals with sliding mode control of a fermentation process in a continuous stirred bioreactor. A new sliding surface is defined using angular information as a function of time that provides adjustable continuous movement of the sliding surface. Computer simulations are presented to show the effectiveness and efficiency of the proposed method and to make a quantitative comparison with the conventional sliding mode controller having a constant sliding surface. The excess amount of substrate concentration in the mixture causes undesired by-product information. Therefore, the substrate concentration should not stay above its desired value for a long time. It is shown in the simulations that the performance of the proposed method, especially in regard to the settling time of the substrate concentration and reaching time, is improved. It is also shown that different system state trajectories could be obtained with the proposed method by adjusting the defined parameters of the angular information.

show abstract

Sliding mode control of a bioreactor

Cited by 9 publications

References 9 publications

Design of a Memristor-based Chattering Free Sliding Mode Controller and Speed Control of the BLDC Motor

Design of a Memristor-based Chattering Free Sliding Mode Controller and Speed Control of the BLDC Motor

Modified Fast Terminal Sliding Mode Control for DC-DC Buck Power Converter with Switching Frequency Regulation

Sliding mode controlled bioreactor using a time-varying sliding surface

Contact Info

Product

Resources

About