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plant growth regulator 4

Linear quadratic regulator (LQR) 2

linear quadratic regulator (LQR) 2

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Algebraic Riccati equation (ARE) 1

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A linear quadratic regulator control of a stand-alone PEM fuel cell power plant

Amar BENAISSA, Boualaga RABHI, Ammar MOUSSI, Dahmani AISSA

Frontiers in Energy 2014, Volume 8, Issue 1,   Pages 62-72 doi: 10.1007/s11708-013-0291-5

Abstract: This paper introduces a technique based on linear quadratic regulator (LQR) to control the output voltage

Keywords： modeling of proton exchange membrane fuel cell (PEMFC)     controlling of PEMFC     linear quadratic regulator(LQR)     DC/DC converter     DC/AC inverter    

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Load shedding scheme for the two-area system with linear quadratic regulator

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 90-102 doi: 10.1007/s11708-012-0224-8

Abstract: three scenarios: the scheme with a conventional integral controller; the scheme with a linear quadratic regulator(LQR); and the scheme with an LQR and superconducting magnetic energy storage devices (SMES).

Keywords： frequency response     load shedding (LS)     multi-area system     rate of change of frequency     linear quadratic regulator(LQR)     superconducting magnetic energy storage devices (SMES)    

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Flight control for air-breathing hypersonic vehicles using linear quadratic regulator design based on Article

Lin CAO, Shuo TANG, Dong ZHANG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 7,   Pages 882-897 doi: 10.1631/FITEE.1601363

Abstract: In this paper, we propose a linear-quadratic regulator (LQR) design method based on stochastic robustnessThen, the mapping rela-tionship between system robustness and LQR parameters is established.robustness, a novel hybrid particle swarm optimization algorithm is proposed to search for the optimal LQRsimulation results show that the optimization algorithm can effectively find the optimal solution to the LQR

Keywords： Air-breathing hypersonic vehicles (AHVs)     Stochastic robustness analysis     Linear-quadratic regulator(LQR)     Particle swarm optimization (PSO)     Improved hybrid PSO algorithm    

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A hybrid LQR-PID control design for seismic control of buildings equipped with ATMD

Amir Hossein HEIDARI, Sadegh ETEDALI, Mohamad Reza JAVAHERI-TAFTI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 44-57 doi: 10.1007/s11709-016-0382-6

Abstract: through combining the idea of proportional-integral-derivative (PID) controller and linear quadratic regulator(LQR) control algorithm.Considering four earthquakes, the performance of the proposed LQR-PID controller is evaluated.Then, the results are compared with those given by a LQR controller.The simulation results indicate that the LQR-PID performs better than the LQR controller in reduction

Keywords： seismic control     tuned mass dampers     cuckoo search     PID controller     LQR controller    

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Active steering control strategy for articulated vehicles Project supported by the Program for Changjiang Scholars and Innovative Research Team in University, China (No. IRT0626) Article

Kyong-il KIM,Hsin GUAN,Bo WANG,Rui GUO,Fan LIANG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 6,   Pages 576-586 doi: 10.1631/FITEE.1500211

Abstract: an active steering controller, including tractor and trailer controllers, based on linear quadratic regulator(LQR) theory.Then the active steering controller of the tractor and trailer based on LQR is designed to follow the

Keywords： Articulated vehicle     Sharp curve     Lateral stability     Linear quadratic regulator (LQR)    

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The Effect of Plant Growth Regulator TA Emulsive Powder on the Yield and Quality of Kelp

Liu Desheng,Zhang Qun

Strategic Study of CAE 2000, Volume 2, Issue 2,   Pages 68-73

Abstract:

At present, the breeding area of kelp in China is about 15000 hectares, and annual yield of dry product is 270 000 tonnes accounting for 50% of the total yield of seaweed in the world. TA emulsive powder can remarkably increase the yield and improve the quality of kelp. After the kelp seedling soaked in 2 mg/L TA solution for 2 hours and then put into breeding, the growth of rhizoid can be promoted and the seedling preservation rate can be raised, the content of chlorophyll and fucoxanthin increased, photosynthesis rate raised, accumulation of dry substance increased, activity of PEP carboxylase raised, metabolism of carbon promoted, activity of nitric-reductase raised, metabolism of nitrogen promoted, absorption of nitrogen, phosporous, potassium increased, growth and development promoted, contents of nucleic acid and protein raised, physiological adjusmtent strengthened, anti-disease property strengthened, rate of incidence of disease reduced. The yield of dry substance increased by 6.5 t per hectar in average compated with the treatment on the blank, that is increased by 35% . At the sametime, 24.24 kg iodine, 1.665t brown alg gum, and 1.278 t mannitol in kelp are increased per hectar. TA emulsive powder is a pioneer product at home and abroad. It has the advantages of non-toxic, high efficiency, low cost, no deterioration and convenience in storage and transport, etc. It has been popularized in 15 000 hectares in the whole country and the economic benefit is more than 300 million yuan.

Keywords： triacontanol     kelp     plant growth regulator    

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Fibroblast growth factor 21: a novel metabolic regulator from pharmacology to physiology

Huating Li, Jing Zhang, Weiping Jia

Frontiers of Medicine 2013, Volume 7, Issue 1,   Pages 25-30 doi: 10.1007/s11684-013-0244-8

Abstract:

Fibroblast growth factor 21 (FGF21) is a member of the fibroblast growth factor family. It actually functions as endocrine hormones but does not regulate cell growth and differentiation. It is demonstrated that FGF21 acts on multiple tissue to coordinate carbohydrate and lipid metabolism, including enhancing insulin sensitivity, decreasing triglyceride concentrations, causing weight loss, ameliorating obesity-associated hyperglycemia and hyperlipidemia. Moreover, FGF21 also plays important roles in some physiological processes, such as fasting and feeding, growth hormone axis and thermogenic function of brown adipose tissue. Clinical relevance of FGF21 in humans is still unclear, and the basis and consequences of increased FGF21 in metabolic disease remain to be determined. Both the pharmacological actions and physiological roles make FGF21 attractive drug candidates for treating metabolic disease, but some questions remain to be answered. This article concentrates on recent advances in our understanding of FGF21.

Keywords： FGF21     metabolism     pharmacology     physiology     clinical relevance    

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Autoimmune regulator regulates autophagy in THP-1 human monocytes

Liang SHI, Li-Hua HU, Yi-Rong LI

Frontiers of Medicine 2010, Volume 4, Issue 3,   Pages 336-341 doi: 10.1007/s11684-010-0096-4

Abstract: The autoimmune regulator (AIRE) is a crucial factor for the induction of central tolerance, and mutations

Keywords： autoimmune regulator     autophagy     monocytes     light chain 3 (LC3)    

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THE ANTHOCYANIN BIOSYNTHETIC REGULATOR MDMYB1 POSITIVELY REGULATES ASCORBIC ACID BIOSYNTHESIS IN APPLE

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 2,

Abstract: Further studies showed that the anthocyanin biosynthetic regulator MdMYB1 directly activates the expression
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THE ANTHOCYANIN BIOSYNTHETIC REGULATOR MDMYB1 POSITIVELY REGULATES ASCORBIC ACID BIOSYNTHESIS IN APPLE

Jianping AN, Xiaofei WANG, Chunxiang YOU, Yujin HAO

Frontiers of Agricultural Science and Engineering   Pages 231-235 doi: 10.15302/J-FASE-2020367

Abstract: Further studies showed that the anthocyanin biosynthetic regulator MdMYB1 directly activates the expression

Keywords： anthocyanin     apples     ascorbic acid     MdMYB1     vitamin C    

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Optimization of formation for multi-agent systems based on LQR

Chang-bin Yu, Yin-qiu Wang, Jin-liang Shao,brad.yu@anu.edu.au,wh6508@gmail.com,jinliangshao@126.com

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 2,   Pages 96-109 doi: 10.1631/FITEE.1500490

Abstract: In this paper, three optimal linear algorithms are proposed for first-order linear from a perspective with cost functions consisting of both interaction energy cost and individual energy cost, because both the collective object (such as formation or consensus) and the individual goal of each agent are very important for the overall system. First, we propose the optimal formation algorithm for first-order without initial physical couplings. The parameter matrix of the algorithm is the solution to an . It is shown that the matrix is the sum of a Laplacian matrix and a positive definite diagonal matrix. Next, for physically interconnected , the optimal formation algorithm is presented, and the corresponding parameter matrix is given from the solution to a group of quadratic equations with one unknown. Finally, if the communication topology between agents is fixed, the local feedback gain is obtained from the solution to a quadratic equation with one unknown. The equation is derived from the derivative of the cost function with respect to the local feedback gain. Numerical examples are provided to validate the effectiveness of the proposed approaches and to illustrate the geometrical performances of .

Keywords： Linear quadratic regulator (LQR)     Formation control     Algebraic Riccati equation (ARE)     Optimal control    

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Effect of Plant Growth Regulator Triacontanol (TA) on the Yield of Rice

Liu Desheng,Lu Xiumin,He Mingzhong,Xiao Huashan,Fan Xiuzhen

Strategic Study of CAE 2002, Volume 4, Issue 11,   Pages 82-88

Abstract:

Triacontanol (TA) emulsive powder is a kind of widespread plant growth regulator.

Keywords： Triacontanol     rice     plant growth regulator    

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A Control System Based on the Lagrange Modeling Method for a Single Link Rotary Inverted Pendulum

Wu Aiguo,Zhang Xiaoming,Zhang Zhao

Strategic Study of CAE 2005, Volume 7, Issue 10,   Pages 11-15

Abstract: In addition, linear quadratic regulator (LQR) is designed and implemented on the RIP system by successfully

Keywords： rotary inverted pendulum     Lagrange method     LQR control strategy    

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Chord error constraint based integrated control strategy for contour error compensation

Tie ZHANG, Caicheng WU, Yanbiao ZOU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 645-658 doi: 10.1007/s11465-020-0601-7

Abstract: Moreover, a feed rate regulator based on the chord error constraint is proposed, which performs speedBesides, an improved position error compensation method is further presented by combining the feed rate regulator

Keywords： cross-coupling controller     contour error     tracking error     position error compensator     feed rate regulator    

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Vehicle roll stability control with active roll-resistant electro-hydraulic suspension

Lijun XIAO, Ming WANG, Bangji ZHANG, Zhihua ZHONG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 1,   Pages 43-54 doi: 10.1007/s11465-019-0547-9

Abstract: Second, an optimal linear quadratic regulator controller is obtained in consideration of dynamic vehicle

Keywords： electro-hydraulic suspension     roll stability     LQR     experiment    

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Title Author Date Type Operation

A linear quadratic regulator control of a stand-alone PEM fuel cell power plant

Amar BENAISSA, Boualaga RABHI, Ammar MOUSSI, Dahmani AISSA

Journal Article

Load shedding scheme for the two-area system with linear quadratic regulator

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Journal Article

Flight control for air-breathing hypersonic vehicles using linear quadratic regulator design based on

Lin CAO, Shuo TANG, Dong ZHANG

Journal Article

A hybrid LQR-PID control design for seismic control of buildings equipped with ATMD

Amir Hossein HEIDARI, Sadegh ETEDALI, Mohamad Reza JAVAHERI-TAFTI

Journal Article

Active steering control strategy for articulated vehicles Project supported by the Program for Changjiang Scholars and Innovative Research Team in University, China (No. IRT0626)

Kyong-il KIM,Hsin GUAN,Bo WANG,Rui GUO,Fan LIANG

Journal Article

The Effect of Plant Growth Regulator TA Emulsive Powder on the Yield and Quality of Kelp

Liu Desheng,Zhang Qun

Journal Article

Fibroblast growth factor 21: a novel metabolic regulator from pharmacology to physiology

Huating Li, Jing Zhang, Weiping Jia

Journal Article

Autoimmune regulator regulates autophagy in THP-1 human monocytes

Liang SHI, Li-Hua HU, Yi-Rong LI

Journal Article

THE ANTHOCYANIN BIOSYNTHETIC REGULATOR MDMYB1 POSITIVELY REGULATES ASCORBIC ACID BIOSYNTHESIS IN APPLE

Journal Article

THE ANTHOCYANIN BIOSYNTHETIC REGULATOR MDMYB1 POSITIVELY REGULATES ASCORBIC ACID BIOSYNTHESIS IN APPLE

Jianping AN, Xiaofei WANG, Chunxiang YOU, Yujin HAO

Journal Article

Optimization of formation for multi-agent systems based on LQR

Chang-bin Yu, Yin-qiu Wang, Jin-liang Shao,brad.yu@anu.edu.au,wh6508@gmail.com,jinliangshao@126.com

Journal Article

Effect of Plant Growth Regulator Triacontanol (TA) on the Yield of Rice

Liu Desheng,Lu Xiumin,He Mingzhong,Xiao Huashan,Fan Xiuzhen

Journal Article

A Control System Based on the Lagrange Modeling Method for a Single Link Rotary Inverted Pendulum

Wu Aiguo,Zhang Xiaoming,Zhang Zhao

Journal Article

Chord error constraint based integrated control strategy for contour error compensation

Tie ZHANG, Caicheng WU, Yanbiao ZOU

Journal Article

Vehicle roll stability control with active roll-resistant electro-hydraulic suspension

Lijun XIAO, Ming WANG, Bangji ZHANG, Zhihua ZHONG

Journal Article