Output Feedback Adaptive Sliding Mode Control Design for a Plate Heat Exchanger

Al-Samarraie, Shibly Ahmed; Ali, Luma F.

doi:10.29194/njes.21040549

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…And with the temperatures of the outlet hot (𝑇 ℎ𝑜𝑖 ) and cold (𝑇 𝑐𝑜𝑖 ) streams as the states, the differential equations that describe the dynamics of the heat exchanger (i) is given by [18], [19]:…”

Section: Fig 1 Parallel Heat Exchanger Networkmentioning

confidence: 99%

Parallel Heat-Exchangers Network Optimization Using Sliding Mode Extremum Seeking with integral Anti Wind Up Scheme

Al-Gadery¹,

Al-Samarraie²

2021

IJCCCE

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In this paper, we study the Sliding Mode Extremum Seeking (SMES) optimization method for a Heat Exchangers Network. The studied network is constructed from plate Heat Exchangers, in which several thermal sources are used to heat a common cold stream that is distributed between the several branches of the network. The considered optimization problem is the optimization of the thermal power gained from different hot sources. The control variables are the split ratios of the cold stream to the different heat exchangers. The dynamical model for general Heat Exchanger Network with (n) Heat Exchangers was driven and the special case of two Heat Exchangers in parallel was considered as a case study. The SMES algorithm was modified with an integral anti-windup scheme to constrain the search within the admissible region. The simulation results obtained by using Matlab program confirmed the effectiveness of the approach. Index Terms— Heat Exchangers Network, Sliding Mode Based Extremum Seeking, Real-time Optimization.

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Section: Fig 1 Parallel Heat Exchanger Networkmentioning

confidence: 99%

Parallel Heat-Exchangers Network Optimization Using Sliding Mode Extremum Seeking with integral Anti Wind Up Scheme

Al-Gadery¹,

Al-Samarraie²

2021

IJCCCE

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“…An adaptive sliding mode control methodology is proposed by Plestan et al [20] which guarantees a real sliding mode. Adaptive sliding mode control is introduced for many applications like for heat exchanger as in the paper [21].…”

Section: Introductionmentioning

confidence: 99%

Robust Nonlinear Control Design for the HVAC System Based on Adaptive Sliding Mode Control

Hassan¹,

Al-Samarraie²

2022

JESA

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Control of Heating, Ventilating, and Air Conditioning (HVAC) aims to provide a comfortable environment for human life in terms of temperature and humidity and improve indoor air quality. The HVAC system is multi-input multi-output, where the control design of this system is challenging due to its strong nonlinearity and the coupled influence of both system controllers on the temperature within the thermal zone. The aim of this study is to design a dual-controller for the HVAC system. The first controller is a non-linear feedback controller which is devoted to control the humidity ratio of the thermal zone with the desired characteristic. While for the second one, a robust controller is designed to maintain the desired thermal zone temperature based on the adaptive sliding mode controller (ASMC). Using the ASMC enabled us to design the second controller without the need to know the uncertainty bound on the HVAC system model. Additionally, the stability of the proposed control system was verified using the Lyapunov theory. To construct the sliding variable for the temperature control, the error state which is the difference between the thermal zoon temperature and the desired value and its derivative is needed. Due to the uncertainty in the error state derivative, a robust differentiator was designed using the approximate classical sliding mode differentiator (ACSMD). Finally, the performance of the control system is confirmed via numerical simulation. The results showed the robust ability of the control system to make the humidity and temperature of the thermal area follow the required values and with high accuracy.

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Adaptive Integral Sliding Mode Controller (SMC) Design for Vehicle Steer-by-Wire System

Abbas,

Husain,

Al-Wais

et al. 2024

Vehicle Dynamics, Stability, and NVH

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<div>This article considers the application of a robust control technique for vehicle steer-by-wire (VSbW) system subjected to variations in parameters based on adaptive integral sliding mode control (AISMC). The AISMC has been designed to control the VSbW system to cope with the uncertainties in system parameters. The proposed adaptive control scheme provides the solution for perturbation boundedness, as there is no need to have a prior knowledge of perturbation bound in the uncertainty. In addition, the proposed adaptive control design can avoid overestimation of sliding gain under unknown prior knowledge of perturbations. Moreover, the inclusion of integral sliding mode control (ISMC) leads to elimination of the reaching phase in trajectory solution of controlled system. Computer simulations have been used to verify the effectiveness of proposed AISMC to show the superiority of the proposed control technique; in this regard, a comparison between AISMC and other control methods from the literature were conducted. The numerical simulation based on MATLAB programming software showed that the designed AISMC has better tracking performance and accuracy as compared to ISMC and other control schemes in terms of robustness characteristics.</div>

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Output Feedback Adaptive Sliding Mode Control Design for a Plate Heat Exchanger

Cited by 3 publications

References 16 publications

Parallel Heat-Exchangers Network Optimization Using Sliding Mode Extremum Seeking with integral Anti Wind Up Scheme

Parallel Heat-Exchangers Network Optimization Using Sliding Mode Extremum Seeking with integral Anti Wind Up Scheme

Robust Nonlinear Control Design for the HVAC System Based on Adaptive Sliding Mode Control

Adaptive Integral Sliding Mode Controller (SMC) Design for Vehicle Steer-by-Wire System

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