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Design of a Performance-Driven controller with 1-parameter tuning

IFAC-PapersOnLine 2017年第1期50卷 13934-13939页

作者： Kinoshita, Takuya Inoue, Akinori Ohnishi, Yoshihiro Yamamoto, Toru Shah, Sirish L. Graduate School of Engineering Hiroshima University 1-4-1 Kagamiyama Higahi-Hiroshima Hiroshima739-8527 Japan Faculty of Education Ehie University 3 Bunkyocho Matsuyama Ehime790-8577 Japan Institute of Engineering Hiroshima University 1-4-1 Kagamiyama Higahi-Hiroshima Hiroshima739-8527 Japan Departement of Chemical and Materials Engineering University of Alberta EdmontonAB T6G 1H9 Canada

In process industries, it is important to maintain the desired control performance in steady state because of requirement of high-quality products and energy saving. This is the main motivation in the development of a performance-driven control scheme based on the minimum variance control law. In that scheme, controller parameters are adjusted when the control performance based on the MV-Index (Minimum Variance Index) deteriorates. However, this MV-Index based tuning scheme only takes into account only controller error variance unfortunately with no regard for manipulative variable activity. To circumvent this omission, this paper describes a design of a new performance-driven control system whose control performance assessment scheme takes into account controller error variance as well as the manipulating variable variance. Furthermore, in this newly proposed scheme, controller parameters are calculated using a fictitious reference iterative tuning (FRIT) scheme which is one of the data-driven tuning scheme. The effectiveness of the proposed scheme is demonstrated by evaluation on a numerical example. © 2017

关键词： Quality control Control theory controllers Energy conservation Three term control systems Control performance Control performance assessment controller parameter Fictitious reference iterative tuning Generalized minimum variance control High quality products Minimum variance control Performance driven

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An efficient dynamic reliability method for maglev vehicle-bridge systems and its application in random controller parameters analysis

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JOURNAL OF LOW FREQUENCY NOISE VIBRATION AND ACTIVE CONTROL 2025年第1期44卷 477-496页

作者： Wang, Lidong Li, Qingrong Zhang, Xun Bu, Xiumeng Hu, Peng Han, Yan Changsha Univ Sci & Technol Sch Civil Engn 960Sect 2Wanjiali South Rd Changsha 410114 Peoples R China Changsha Univ Sci & Technol Key Lab Safety Control Bridge Engn Minist Educ Changsha Peoples R China Yellow River Conservancy Tech Inst Civil Engn & Transportat Engn Kaifeng Peoples R China

This article presents an efficient method for analyzing the dynamic reliability of maglev vehicle-bridge coupled systems by combining a theoretical model with an adaptive surrogate model and the probability density evolution method (PDEM). First, a refined theoretical model of a maglev vehicle-bridge coupling system is established. Next, an adaptive surrogate model of the equivalent extreme value of the system dynamic response is established by combining an adaptive sampling method with radial basis functions. Finally, the adaptive surrogate model and PDEM are combined to further improve the efficiency of the dynamic reliability analysis. In the numerical example, the theoretical model of the maglev vehicle-guideway system was first validated by comparing with the measured data from the Shanghai high-speed maglev line. Then, by treating the controller parameters as normally distributed random variables, the accuracy and efficiency of the proposed reliability method were verified through comparison with the Monte Carlo method and the one-stage sampling surrogate model. Additionally, the impact of the randomness of each controller parameter and the coefficient of variation of the controller parameters on the system's dynamic reliability was discussed.

关键词： High-speed maglev vehicle-bridge coupled vibration controller parameter adaptive surrogate model probability density evolution method dynamic reliability

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Optimal feedback control parameters for underwater gliders: Balancing energy efficiency and motion accuracy

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OCEAN ENGINEERING 2025年 322卷

作者： Song, Yang Niu, Wendong Shi, Weichao Wu, Hongyu Xu, Yunxin Newcastle Univ Marine Offshore & Subsea Technol Grp Mech Engn & Marine Technol Sch Engn Newcastle Upon Tyne NE1 7RU England Tianjin Univ Sch Mech Engn Key Lab Mech Theory & Equipment Design Minist Educ Tianjin 300350 Peoples R China Univ Sci & Technol Beijing Sch Mech Engn Beijing 100083 Peoples R China

Energy consumption and motion accuracy are two critical factors for evaluating the performance of underwater gliders. While motion accuracy can be improved through the implementation of feedback controllers, such an approach often results in increased energy consumption due to frequent intervention. Thus, there exists a contradiction between energy consumption and motion accuracy. This study aims to optimize the controller parameters of underwater gliders to minimize energy consumption while maximizing the accuracy of gliding motion. To achieve this, an Energy Consumption Model (ECM) and a Motion Accuracy Evaluation Index (MAEI) are developed. An optimization method, based on Pareto optimality and the non-dominated sorting genetic algorithm II, is proposed to balance energy consumption and motion accuracy. A glider mission is simulated to assess the performance of the developed method. The results demonstrate the effectiveness of the proposed approach in generating optimal controller parameters for diverse control objectives, thus enabling quick determination of the controller parameters. This study contributes to the improvement of underwater glider control strategies and facilitates their application in various underwater missions.

关键词： Underwater glider Energy consumption Motion accuracy Performance optimization controller parameter

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Stability comparison of different controllers for hydraulic turbine fractional order interval parameter time-delay system

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SYSTEMS SCIENCE & CONTROL ENGINEERING 2023年第1期11卷

作者： Tian, Tian Lv, Jinhua Tang, Jian Wuhan Inst Shipbuilding Technol Coll Elect & Elect Engn Wuhan Peoples R China

This paper studies the stability comparison of four controllers for a hydraulic turbine fractional order interval parameter time-delay system. Considering the terms of parameter uncertainty and time-lag, the hydraulic turbine fractional order interval parameter time-delay system is established by using fractional calculus and identification technology. Through the edge theorem and D-decomposition method, the calculation process of controller parameter stability region is derived in every detail. Subsequently, the four different controllers including the PID, PID plus second order derivative (PID2D), fractional order PID (FOPID) and fractional order PID plus second order derivative (FOPID2D) controllers, are applied in the hydraulic turbine fractional order interval parameter time-delay system. According to the experimental results, the effect of the controller parameters k(d) , k(d) (2), alpha and lambda on the stability region of the parameters k(p) and k(i) is analysed and the variable law of stability regions of the hydraulic turbine governing system is presented. Finally, the stability region of these four controllers is compared and the results validate the superiority of the FOPID2D controller over the other controllers.

关键词： Hydraulic turbine governing system stability region fractional order controller parameter time-delay interval parameter

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Modeling and Stability Analysis of the Cascaded Dual Active Bridge Converter System with Considerations of the controller parameters 10

Modeling and Stability Analysis of the Cascaded Dual Active ...

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10th International Conference on Power Electronics and ECCE Asia (ICPE - ECCE Asia)

作者： Lin, Fanfan Zhang, Xin Feng, Fan Nanyang Technol Univ Sch Elect & Elect Engn Singapore Singapore

ISBN: (纸本)9788957083130

The dual active bridge (DAB) converter is attracting more and more attention nowadays for its advantages like higher power density and soft switching properties. However, the LC input filter which is often cascaded with DAB to improve input current quality sometimes leads to instability of the whole cascaded system. To analyze stability of this cascaded system with an LC input filter, this paper builds the full-order DAB closed-loop impedance model impedance with generalized state-space averaging method. The derived model is used in the minor loop gain of the cascaded system for stability assessment with Nyquist Criteria. And the effects of different PI controller parameters are analyzed. Experimental results validate the theoretical analysis.

关键词： dual active bridge converter cascaded system stability output impedance modeling controller parameter

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The controller Design Method of Grid-connected Inverter Based on Reduced order Jacobian Matrix

The Controller Design Method of Grid-connected Inverter Base...

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Chinese Automation Congress (CAC)

作者： Wu, Wenjun Lan, Xuemei Li, Haolu Ma, Baohui Xian Univ Technol Coll Elect Engn Xian Peoples R China Tianshui Elect Drive Res Inst Grp Co LTD Tianshui Gansu Peoples R China

ISBN: (纸本)9781728176871

In this paper, discrete model of three-phase grid-connected inserter was introduced. In order to restrain the bifurcation and ensure the stable operation of the system, the controller parameter design method based on reduced order Jacobian matrix was proposed. The controller parameters were designed. To proof the proposed method, Jacobian matrix eigenvalue traces diagram and bifurcation diagram of the three-phase grid-connected current Is ere drawn. The three phase grid-connected current simulation has been completed based on PSIM. The results show that the proposed scheme was correct and feasible, the design difficulty of controller parameter was reduced largely.

关键词： grid-connected inverter controller parameter Reduced order Jacobian matrix Bifurcation Stability

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Integrated design method for LCL-type filter and current controller to improve inverter adaptability to grid impedance

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IET POWER ELECTRONICS 2019年第12期12卷 3295-3305页

作者： Zheng, Chen Liu, Yajuan Li, Qionglin Liu, Shuming Zhang, Bo Wang, Yi Mao, Mingxuan State Grid Henan Elect Power Co Elect Power Res Inst 85 Songshan South Rd Zhengzhou Henan Peoples R China State Grid Zhengzhou Elect Power Supply Co 87 Songshan South Rd Zhengzhou Henan Peoples R China Chongqing Univ State Key Lab Power Transmiss Equipment & Syst Se Chongqing 400044 Shapingba Distr Peoples R China

To characterise the grid-connected inverter with strong robustness against grid impedance, this study proposes an integrated design approach of LCL-type filter and controller parameters. In the approach, the inherent relation between LCL-type filter and controller in regarding to inverter robustness is revealed and utilised to realise the optimised match between LCL-type-filter parameters and controller parameters. To facilitate the analysis of stability and robustness, a parameter normalisation scheme is also proposed. With the scheme, relevant normalisation parameters can be designed succinctly according to the required stability and robustness. Additionally, the LCL-type parameter and controller parameter can be achieved immediately by restoring normalisation parameters. Based on the approach parameter constraints and design guidelines for robust grid-connected inverter design are also derived in the study to facilitate its application in practice. The proposed inverter design method can guarantee the inverter stability and robustness simultaneously without needing the complicated iterative computations, which cannot be avoided for conventional design methods. Simulation and experimental results are presented to validate the performance and demonstrate the merits of the integrated design method.

关键词： invertors electric current control power grids filtering theory inverter stability conventional design methods integrated design method current controller inverter adaptability grid impedance strong robustness integrated design approach LCL filter controller parameters inverter robustness LCL-filter parameters parameter normalisation scheme controller parameter design guidelines robust grid-connected inverter design inverter design method normalisation parameters parameter constraints

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An Autonomous Design Method of a Cascade Structure Feedback controller 8

An Autonomous Design Method of a Cascade Structure Feedback ...

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8th International-Federation-of-Automatic-Control (IFAC) Symposium on Mechatronic Systems (MECHATRONICS) / 11th International-Federation-of-Automatic-Control (IFAC) Symposium on Nonlinear Control Systems (NOLCOS)

作者： Kuroda, Eitaro Maeda, Yoshihiro Iwasaki, Makoto Nagoya Inst Technol Dept Elect & Mech Engn Nagoya Aichi Japan

This paper proposes a method to design a wide-bandwidth cascade structure feedback (FB) controller for a mechatronic system with resonant modes. The notable feature of the proposed method is to optimally design both the structure and parameters of a FB controller that performs wide-bandwidth FB control while meeting the specified control stability requirements. The proposed method searches for an optimum controller structure, in terms of the sequence of element compensators, as well as including a hybrid optimization-based controller parameter design method. The effectiveness of the proposed method was verified through numerical simulations using a laboratory galvano scanner. (C) 2019, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Feedback control autonomous controller design controller parameter controller structure control bandwidth

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Combined voltage and frequency control of a multi-area multisource system incorporating dish-Stirling solar thermal and HVDC link

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IET RENEWABLE POWER GENERATION 2018年第3期12卷 323-334页

作者： Rajbongshi, Rumi Saikia, Lalit Chandra Natl Inst Technol Dept Elect Engn Silchar 788010 Assam India

This study highlights the significance of dish-Stirling solar thermal system (DSTS) and high voltage direct current (HVDC) link in the combined automatic load frequency control (ALFC) and automatic voltage regulator (AVR) model of the multi-area thermal-diesel plant. Appropriate generation rate constraints and governor dead band for the thermal plant are considered. A maiden attempt has been made to apply fractional order integral double derivative controller with derivative filter (FOIDDF) as a secondary controller for both ALFC and AVR loops. The performance of the FOIDDF controller is compared with some commonly used classical controllers. The lightning search algorithm is implemented for simultaneous optimisation of the controller parameters. The comparison shows the better performance of FOIDDF than others. The effect of the AVR loop on the ALFC loop is also analysed for the first time in the combined model. The investigation of the effect of DSTS and HVDC links reveals that their inclusion improves the system dynamics. The superiority of the proposed controller has been established for variable insolation of the DSTS. The rigorous sensitivity analysis of the different position and magnitude of disturbance, change in tie-line synchronising coefficient and different condition of the DSTS reflects the robustness of the proposed controller parameters obtained at the nominal condition.

关键词： frequency control voltage control solar power stations thermal power stations HVDC power transmission HVDC power convertors power generation control power transmission control combined voltage-frequency control multiarea multisource system dish-Stirling solar thermal HVDC link DSTS high-voltage direct current link combined automatic load frequency control automatic voltage regulator model AVR model multiarea thermal-diesel plant appropriate generation rate constraints governor dead band fractional order integral double derivative controller derivative filter FOIDDF secondary controller ALFC loop AVR loop lightning search algorithm simultaneous optimisation controller parameter sensitivity analysis tie-line synchronising coefficient nominal condition

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Modeling and control of inverter-based microgrids

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IFAC-PapersOnLine 2018年第2期51卷 19-24页

作者： Hammer, Bernhard Gong, Kuangye Konigorski, Ulrich TU Darmstadt Landgraf-Georg-Str. 4 Darmstadt64283 Germany

Assuming the most common control structure for zero and primary control of inverter-based microgrids, i.e. three cascades with the highest one being droop control, the potential benefit of optimizing the control parameters is investigated. A detailed nonlinear plant model is derived that compactly describes the dynamics in local dq-coordinates. Then, the design of the decentralized, cascaded controllers is converted into the problem of designing one centralized static controller with structural restrictions. To tune the controller parameters, a direct method for pole-assignment is used. The simulations show that the oscillations in the transient response can be reduced greatly by choosing appropriate control parameters, while the speed of the system is restricted due to the low-pass filtering of the power for primary control. © 2018

关键词： controllers Decentralized control Electric inverters Low pass filters Transient analysis Control parameters controller parameter Eigenstructure assignment Low pass filtering Micro grid Modeling and control Primary control Structural restrictions

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