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Repetitive pd control strategy with inverse transfer function compensation for CVCF inverter

控制理论与应用（英文版） 2004年第2期2卷 121-125页

作者： ShanxuDUAN CollegeofElectroniceandElectronicsEngineering HuazhongUniversityofScience＆TechnologyWuhanHubei430074China

A novel repetitive control strategy for the output waveform of single-phase CVCF inverters is presented. In this scheme, the inverse transfer function of inverter is used as a compensator to obtain stable and satisfy harmonic rejection. Besides, pd controller is adopted to improve transient performance. Simulation and experimental results, which are gotten from a DSP-based 400Hz, 5.5KW inverter, indicate that the proposed control scheme can achieve not only low THD during steady-state operation but also fast transient response during load step change.

关键词： Inverter Inverse transfer function Repetitive control pd control

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Quadrotor Trajecotry Tracking control: A pd control Algorithm

Quadrotor Trajecotry Tracking Control: A PD Control Algorith...

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2010 3rd International Conference on Computer and Electrical Engineering(ICCEE 2010)

作者： Zongyu Zuo The Seventh Research Division Beihang University (formerly Beijing University of Aeronautics and Astronautics)National Key Laboratory of Science and Technology on Holistic Control

This paper constructs a relationship between attitude and translational movement of a quadrotor, and presents a pd logic tracking control design algorithm capable of not only stabilizing attitude but also tracking a desired trajectory accurately. In contrast to conventional flight control systems, the artificial inner-/outer-loop structure is eliminated via using a third-order time optimal tracking-differentiator. Simulation results demonstrate a better performance than that of conventional ones with timescale separation requirement.

关键词： pd control quadrotor trajectory tracking tracking-differentiator

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A Comparison Study of pd control of Joint Velocity in Robot Arms

A Comparison Study of PD Control of Joint Velocity in Robot ...

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第二十六届中国控制会议

作者： Song Naihui,Ren Zhaohui,Wang Yongfu,Wen Bangchun School of Mechanical Engineering and Automation,Northeastern University,Shenyang.110004.P.R.China

The pd controller requires measurements of both joint position and *** is necessary to implement position and velocity sensors at each *** joint position measurement can be obtained by means of encoder,which gives very ac-curate *** joint velocity is usually measured by velocity tachometer,which is expensive and often contami-nated by *** possible solution are to implement a velocity observers and numerical difference *** paper presents a comparison study of performances and characteristics of high-gain observers and LPP Numerical difference meth-ods.

关键词： Joint Velocity pd control Robot Arms

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Proportional-derivative control of Second-order Tethered Satellites System Based on Extended State Observer and Feed-forward Compensation

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Guidance, Navigation and control 2023年第3期3卷 65-88页

作者： Bowen Su Fan Zhang Panfeng Huang Research Center for Intelligent Robotics School of Astronautics Northwestern Polytechnical University Xi'an P.R.China National Key Laboratory of Aerospace Flight Dynamics Northwestern Polytechnical University Xi'an P.R.China

This paper researches the proportional-derivative(pd)feedback control with feed-forward compensations from input for a triangular tethered satellite system(TTSS),and the extended state observer(ESO)design which is further incorporated in control to estimate the structural uncertainties in *** expanding Lagrangian equations under chosen variables,the dynamic equations of TTSS are derived which is the second-order nonlinear *** the feedback control under typical feed-forward compensations is discussed as the nonlinear functions in system are counteracted,and the controlled outputs are computed by deriving the transfer functions of the transformed ***,in case of the uncertain structures in system which may constrain the control e®ect,ESO-based pd control is further proposed,and the observed error and controlled accuracy are analyzed by Lyapunov *** results on the designed controls are presented to validate the theoretic analyses.

关键词： pd control extended state observer feed-forward compensation transfer function tethered formation

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Shape control of spacecraft formation using a virtual spring-damper mesh

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Chinese Journal of Aeronautics 2016年第6期29卷 1730-1739页

作者： Chen Qifeng Meng Yunhe Xing Jianjun School of Aeronautics and Astronautics Central South University College of Aerospace Science and Engineering National University of Defense Technology

This paper derives a distance-based formation control method to maintain the desired formation shape for spacecraft in a gravitational potential field. The method is an analogy of a virtual spring-damper mesh. Spacecraft are connected virtually by spring-damper pairs. Convergence analysis is performed using the energy method. Approximate expressions for the distance errors and control accelerations at steady state are derived by using algebraic graph representations and results of graph rigidity. Analytical results indicate that if the underlying graph of the mesh is rigid, the convergence to a static shape is assured, and higher formation control precision can be achieved by increasing the elastic coefficient without increasing the control accelerations. A numerical example of spacecraft formation in low Earth orbit confirms the theoretical analysis and shows that the desired formation shape can be well achieved using the presented method, whereas the orientation of the formation can be kept pointing to the center of the Earth by the gravity gradient. The method is decentralized, and uses only relative measurement information. Constructing a distributed virtual structure in space can be the general application area. The proposed method can serve as an active shape control law for the spacecraft formations using propellantless internal forces.

关键词： Formation shape control Graph rigidity Internal forces pd control Spacecraft formation flying Spacecraft guidance and control Spring-damper mesh

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Modeling and control of Maglev Train Considering Eddy Current Effect

Modeling and Control of Maglev Train Considering Eddy Curren...

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第三十九届中国控制会议

作者： Qing Yang Peichang Yu Jie Li Zhenxiang Chi Lianchun Wang National University of Defense Technology Luoyang Electronic Equipment Test Center of China

At present, the control design of medium and low speed maglev train in EMS system mostly adopts the static levitation force modeling which ignores the influence of eddy current. The purpose of this paper is to model and analyze the maglev train with a speed of 200 km/h. In order to improve the accuracy of the control model, the attenuation effect of eddy current effect on the suspension force should be considered in the modeling. Based on the operation data of Tangshan Maglev Test line, the accuracy of the eddy current effect parameters can be judged and the eddy current effect parameters will participate in the establishment of control model. Aiming at the nonlinearity and instability of suspension system, this paper will try to use the linearization method and pd control algorithm to make the system meet the expectation. This provides a theoretical basis for the acceleration of maglev train in the future.

关键词： Maglev train Eddy current pd control

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Stability Analysis and Bifurcation control For a Fractional Order SIR Epidemic Model with Delay

Stability Analysis and Bifurcation Control For a Fractional ...

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第三十九届中国控制会议

作者： Feng Liu Shuxian Huang Shiqi Zheng Hua O Wang School of Automation China University of Geosciences Hubei key Laboratory of Advanced control and Intelligent Automation for Complex Systems Department of Mechanical Engineering Boston University

In this paper, a delayed fractional SIR epidemic model with incommensurate orders is considered. Firstly, the stability is investigated and the conditions of the existence for Hopf bifurcation are attained by analyzing its characteristic equation. When the delay exceeds the critical value, a Hopf bifurcation occurs, the system loses its stability. An fractional pd control method is proposed to control the bifurcation behaviors of the delayed fractional SIR epidemic model. Finally, some numerical simulations are given to illustrate the validity of theoretical analysis.

关键词： Fractional order stability bifurcation pd control SIR epidemic model

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Analysis of Dynamic Characteristics of the pd Three Grades Pan-Boolean Algebraic controller

Analysis of Dynamic Characteristics of the PD Three Grades P...

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2009 International Conference on Modeling, Simulation and Optimization

作者： Zhou Jin,Chen Jin~* College of Electronic and Electrical Engineering Shanghai Second Polytechnic University Shanghai,China,201209 Lin Bin,Yang Li College of Energy & Power Engineering Wuhan University of Technology Wuhan,China,430070

This paper employedpan-Boolean algebra theory, established logic control rules of the deviation and its differential,divides the controller's output into three grades. Therefore a simple pd pan-Boolean algebraic controller *** three grades pan-Boolean algebraic controller was *** simplified the traditional pd controller's parameters Kp and Kd into one equivalent *** simulation study under scenarios that the transfer function's poles of the control system moving to right gradually shows that the controller's parameter can be easily tuned,but the performance indices are worse than traditional pd ***,the more for the poles of transfer function move to right gradually,the worse the performance indices ***,pd pan-Boolean algebraic controller's output needs to be reasonably divides into regions,this paper is of important significance to design of pd pan-Boolean algebraic controller.

关键词： Pan-boolean algebra logic control pd control

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