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Summarisation, Simulation and Comparison of Nine control algorithms for an Active control Mount with an Oscillating Coil Actuator

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algorithmS 2021年第9期14卷 256页

作者： Fan, Rang-Lin Wang, Pu Han, Chen Wei, Li-Jun Liu, Zi-Jian Yuan, Pei-Ju Univ Sci & Technol Beijing Sch Mech Engn Beijing 100083 Peoples R China Univ Sci & Technol Beijing Shunde Grad Sch Foshan 528399 Peoples R China

With the further development of the automotive industry, the traditional vibration isolation method is difficult to meet the requirements for wide frequency bands under multiple operating conditions, the active control mount (ACM) is gradually paid attentions, and the control algorithm plays a decisive role. In this paper, the ACM with oscillating coil actuator (OCA) is taken as the object, and the comparative study of the control algorithms is performed to select the optimal one for ACM. Through the modelling of ACM, the design of controller and the system simulations, the force transmission rate is used to compare the vibration isolation performance of the nine control algorithms, which are least mean square (LMS) adaptive feedforward control, recursive least square (RLS) adaptive feedforward control, filtered reference signal LMS (FxLMS) adaptive control, linear quadratic regulator (LQR) optimal control, H-2 control, H(infinity)control, proportional integral derivative (PID) feedback control, fuzzy control and fuzzy PID control. In summary, the FxLMS adaptive control algorithm has the better performance and the advantage of easier hardware implementation, and it can apply in ACMs.

关键词： active control mount active vibration control oscillating coil actuator control algorithm vibration isolation

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ACTIVE control OF WAKE BLADE-ROW INTERACTION NOISE

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AIAA JOURNAL 1994年第10期32卷 1953-1960页

作者： KOUSEN, KA VERDON, JM UNITED TECHNOL RES CTR THEORET & COMPUTAT FLUID DYNAME HARTFORDCT 06108

This paper describes an analytical/computational approach for controlling the noise generated by wake/blade-row interaction through the use of antisound actuators on the blade surfaces. A representative two-dimensional section of a fan stage, composed of an upstream fan rotor and a downstream fan exit guide vane (FEGV), is exmained. An existing model for the wakes generated by the rotor is analyzed to provide realistic magnitudes for the vortical excitations imposed at the inlet to the FEGV. The acoustic response of the FEGV is determined at multiples of the blade passing frequency by using the linearized unsteady flow analysis, LINFLO. An analysis then is presented to determine the complex amplitudes required for the control surface motions to best reduce the farfield noise. The effectiveness of the control is measured by the decrease in the circumferentially averaged sound pressure level, which is minimized by a standard least-squares procedure.

关键词： Active control Blade Passing Frequency Sound Pressure Level Actuators Potential Flow control Surfaces Kutta Condition Shape Functions Rotor Wake control algorithm

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Movement Modeling and control for Robotic Bonnet Polishing

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Chinese Journal of Mechanical Engineering 2022年第3期35卷 211-218页

作者： Xuepeng Huang Zhenzhong Wang Zewen Lin Department of Mechanical and Electrical Engineering Xiamen UniversityXiamen 361005China Shenzhen Research Institute of Xiamen University Shenzhen 518057China

With the increasing demand for high-precision optical components,bonnet polishing technology is increasingly being used in the polishing process of optical components owing to its high removal efficiency and high surface ***,it is expensive and difficult to implement dedicated bonnet polishing machine tools,and their processing range is *** research combines bonnet polishing technology with industrial robot-assisted processing technology to propose a robotic bonnet polishing control model for large-diameter axisymmetric aspherical optical *** the transformation relations of the spatial coordinate system,the transformation relations of the workpiece coordinate system,local coordinate system of the polishing point,and tool coordinate system of the bonnet sphere center are established to obtain the bonnet precession polishing motion *** polishing trajectory of large-diameter axisymmetric aspherical components and the variation in the linkage angle difference were simulated by adding an efficiency-optimal control strategy to the motion *** robot motion was simulated in Robostudio to verify the correctness of the precession motion model and control ***,the robotic bonnet polishing system was successfully applied to the polishing process of the optical components.

关键词： Industrial robot Bonnet polishing Precession movement control algorithm

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Relative Motion control For Two-Spacecraft Electrostatic Orbit Corrections

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JOURNAL OF GUIDANCE control AND DYNAMICS 2013年第1期36卷 240-249页

作者： Hogan, Erik A. Schaub, Hanspeter Univ Colorado Boulder CO 80309 USA Univ Colorado Colorado Ctr Astrodynam Res Dept Aerosp Engn Sci Boulder CO 80309 USA

The charged relative-motion dynamics and control of a two-craft system is investigated if one vehicle is performing a low-thrust orbit correction using inertial thrusters. The nominal motion is an along-track configuration where active electrostatic charge control is maintaining an attractive force between the two vehicles. In this study the charging is held fixed and the inertial thruster of the tugging vehicle is controlled to stabilize the relative motion to a nominal fixed separation distance. Using a candidate Lyapunov function, the relative orbit control law is shown to be asymptotically stable. Analysis of the control system gains is performed in order to achieve a desired settling time and damping ratio. The effects of uncertainties in the vehicle charges are also examined. Using numerical simulation, the performance of the proposed control system is investigated for a formation in geosynchronous earth orbit.

关键词： Spacecraft Formation control Systems Damping Coefficient Earth Numerical Simulation control algorithm Disposal Orbit Synchronous Orbit Closed Loop System Orbital Period

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Nonlinear Charge control for a Collinear Fixed-Shape Three-Craft Equilibrium

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JOURNAL OF GUIDANCE control AND DYNAMICS 2011年第2期34卷 359-366页

作者： Wang, Shuquan Schaub, Hanspeter Univ Colorado Dept Aerosp Engn Sci Boulder CO 80309 USA

The collinear equilibrium three-craft-formation charge feedback control problem is investigated. Given a charged-equilibrium collinear configuration of spacecraft flying in deep space, a nonlinear charge feedback control algorithm is developed to stabilize the formation to the desired shape and size. The Coulomb forces are assumed to be acting along the line-of-sight directions between the bodies and thus do not provide general vehicle position controllability. A study of the charged collinear three-craft formation shows that there exists an infinite number of equilibrium charge solutions for any collinear configuration. Given a real value of one spacecraft charge, the required equilibrium charges of the remaining two vehicles are solved analytically. A Lyapunov-based nonlinear control algorithm is developed to stabilize the configuration to the equilibrium state using only the spacecraft charges as the control states. Real charge solutions are ensured by using the one-dimensional solution null-space. Numerical simulations illustrate the new charge feedback control performance. In contrast to earlier efforts, collinear configurations are stabilized even in the presence of very large initial position errors.

关键词： Feedback control Spacecraft Charging Nonlinear control control algorithm Numerical Simulation Discrete control Interplanetary Medium Electrostatic Discharge Satellites Earth

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Adaptive control for Multiagent Systems with Sensor-Actuator Attacks and Stochastic Disturbances

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JOURNAL OF GUIDANCE control AND DYNAMICS 2020年第1期43卷 15-29页

作者： Jin, Xu Haddad, Wassim M. Univ Kentucky Dept Mech Engn Lexington KY 40506 USA Georgia Inst Technol Sch Aerosp Engn Atlanta GA 30332 USA

In this paper, distributed state and output feedback adaptive consensus control protocols are developed for addressing networked multiagent systems subject to exogenous stochastic disturbances as well as sensor and actuator attacks. Specifically, for a class of linear leader-follower multiagent systems with an undirected communication graph topology, state and output feedback adaptive control design protocols are developed for each follower agent to address malicious attacks on the actuator signals of the follower agents as well as sensor attacks on the state and output neighborhood synchronization error measurements. The proposed adaptive controllers involve an indirect adaptive architecture that estimates and compensates for the malicious attacks while guaranteeing uniform ultimate boundedness of the state tracking error for each agent in a mean-square sense.

关键词： Closed Loop System Actuators Sensors Adaptive Output Feedback control Fault Detection, Isolation, and Recovery Communication Channels control algorithm Brownian Motion Ailerons Aircraft Dynamics

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MECHANISM SYNTHESIS AND 2-DIMENSIONAL control DESIGNS OF AN ACTIVE 3-CABLE CRANE

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JOURNAL OF SPACECRAFT AND ROCKETS 1994年第1期31卷 135-144页

作者： YANG, LF MIKULAS, MM Colorado Univ. Boulder

A lunar crane with a three-cable suspension system is investigated to provide a stable end effector for hoisting, positioning, and assembling large components during construction and servicing of a lunar base. The three-cable suspension mechanism consists of a structural framework of three cables pointing to a common point that closely coincides with the suspended payload's center of gravity. The vibrational characteristics of this three-cable device are investigated by comparing a simple two-dimensional suspension model and a swinging pendulum in terms of their analytical natural frequency equations. A study is also made of actively controlling the crane dynamics using two different actuator concepts. Two regulator-type control laws based on Lyapunov control are determined to provide vibration suppression for both dynamic systems. Simulations including initial-valued dynamic responses as well as active control performances are also presented.

关键词： Three Degrees of Freedom Longerons Trusses Kinetic Energy Closed Loop System control algorithm Dynamic Response Active Vibration Suppression Feedback control Riccati Equations

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Angular Motion control of a Large Space Structure with Elastic Elements

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AUTOMATION AND REMOTE control 2023年第8期84卷 882-892页

作者： Rutkovskii, V. Yu. Glumov, V. M. Ermilov, A. S. Russian Acad Sci Trapeznikov Inst Control Sci Moscow Russia

The task of angular orientation and stabilization of a space structure during its assembly in orbit is solved. The structure includes elastic elements that are installed during the assembly process. The elastic elements of the structure have no sensors to obtain information about their deformation parameters. control algorithms are proposed to ensure the stability of the angular motion of the structure. A nonlinear extended Kalman filter is used to obtain the necessary information. A joint estimation algorithm for the coordinates of the angular motion of the considered mechanical system and the coordinates of the elastic vibration tones, as well as an algorithm for the identification of their unobservable parameters are developed. The results of mathematical modeling of a variant of the mechanical system of a space structure are presented, which confirm the operability and efficiency of the developed algorithms for estimating coordinates and parameters.

关键词： mathematical model control algorithm space structure gyroscopic drive vibration damping coordinate estimation

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Finite element analysis of a 'smart' damper for seismic structural control

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COMPUTERS & STRUCTURES 2003年第8-11期81卷 1009-1017页

作者： Valliappan, S Qi, K Univ New S Wales Sch Civil & Environm Engn Sydney NSW 2052 Australia

A 'smart' mild steel damper is proposed in this paper to provide active damping for seismic control of structures. Smart material, which is bonded to the surface of hysteric dampers, is employed as actuator to exert active control force to increase damping effect for the vibration reduction of structural systems. 'Smart' finite element formulation is outlined for the numerical analysis of the proposed control device. Two control algorithms were adopted to regulate active control forces. The results of numerical simulation with two example models show the effectiveness of smart material used for active damping. (C) 2003 Elsevier Science Ltd. All rights reserved.

关键词： finite element smart materials structural control damper control algorithm

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Variable structure adaptive control of wing-rock motion of slender delta wings

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JOURNAL OF GUIDANCE control AND DYNAMICS 1998年第2期21卷 251-256页

作者： Araujo, AD Singh, SN Univ Nevada Dept Elect & Comp Engn Las Vegas NV 89154 USA Univ Fed Rio Grande Norte Dept Elect Engn BR-59072970 Natal RN Brazil

Based on the variable structure model reference adaptive control theory, a new control system for the control of vying-rock motion of slender delta wings, using only roll angle measurement, is designed. For the derivation of the control law, it is assumed that the aerodynamic parameters and the structure of the aerodynamic nonlinear functions in the model are unknown. Moreover, it is assumed that disturbance input due to wind gust is present in the system, It is shown that, in the closed-loop system designed using bounds on uncertain functions, the roll angle tracks given reference trajectory, and the wing rock motion is suppressed. Digital simulation results show that the closed loop system has good transient behavior and robustness to the uncertainties and disturbance input.

关键词： Model Reference Adaptive control Adaptive control Systems Angle of Attack Feedback control Variable Structure control Numerical Simulation Hamilton Jacobi Bellman Equation Three Degrees of Freedom control algorithm Bounded Signals

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