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基于等价输入干扰滑模观测器的磁悬浮球系统模型预测控制 认领
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作者 王军晓 陈林杰 俞立 《控制理论与应用》 EI CAS CSCD 北大核心 2021年第1期137-146,共10页
本文针对系统不确定性和外部干扰引起的磁悬浮球系统控制性能下降的问题,提出了一种基于等价输入干扰滑模观测器的模型预测控制(MPC+EIDSMO)方法.首先将原系统转化为EID系统,采用等价输入干扰滑模观测器对EID系统状态变量及等价输入干... 本文针对系统不确定性和外部干扰引起的磁悬浮球系统控制性能下降的问题,提出了一种基于等价输入干扰滑模观测器的模型预测控制(MPC+EIDSMO)方法.首先将原系统转化为EID系统,采用等价输入干扰滑模观测器对EID系统状态变量及等价输入干扰进行估计;然后基于状态估计值设计模型预测控制器,并将等价输入干扰估计值以前馈的方式补偿后得到最终的复合控制律,实现对参考位置跟踪的快速性,准确性以及对总扰动的鲁棒性.值得注意的是,与传统EID结构中的龙伯格观测器相比,等价输入干扰滑模观测器中增加的非线性观测误差反馈项有助于提高状态估计的快速性和精确性.从理论上证明了该系统是全局一致毕竟有界的.仿真和实验结果表明,相较于基于EID观测器的模型预测控制方法和基于龙伯格观测器的积分模型预测控制方法,所提方法提高了磁悬浮球系统的跟踪性能,并且有效的抑制了系统不确定性和外部干扰. 展开更多
关键词 磁悬浮球系统 模型预测控制 滑模观测器 等价输入干扰 扰动抑制
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Finite-Time Convergence Disturbance Rejection Control for a Flexible Timoshenko Manipulator 认领
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作者 Zhijia Zhao Zhijie Liu 《自动化学报:英文版》 SCIE EI CSCD 2021年第1期157-168,共12页
This paper focuses on a new finite-time convergence disturbance rejection control scheme design for a flexible Timoshenko manipulator subject to extraneous disturbances.To suppress the shear deformation and elastic os... This paper focuses on a new finite-time convergence disturbance rejection control scheme design for a flexible Timoshenko manipulator subject to extraneous disturbances.To suppress the shear deformation and elastic oscillation,position the manipulator in a desired angle,and ensure the finitetime convergence of disturbances,we develop three disturbance observers(DOs)and boundary controllers.Under the derived DOs-based control schemes,the controlled system is guaranteed to be uniformly bounded stable and disturbance estimation errors converge to zero in a finite time.In the end,numerical simulations are established by finite difference methods to demonstrate the effectiveness of the devised scheme by selecting appropriate parameters. 展开更多
关键词 Disturbance observer disturbance rejection control finite-time convergence Timoshenko manipulator vibration control
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废水处理过程的抗扰控制研究 认领
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作者 魏伟 蔡欣宇 +1 位作者 刘载文 左敏 《化工学报》 EI CAS CSCD 北大核心 2021年第3期1567-1574,共8页
厌氧消化废水处理过程中,动态变化的进水组分、组分浓度,组分间耦合等各种不确定因素,使得简单的闭环控制无法获得理想的污水处理效果。为使污水处理出水水质达标,对污水处理过程模型依赖小、对各种变化(扰动)因素鲁棒性强、动态响应好... 厌氧消化废水处理过程中,动态变化的进水组分、组分浓度,组分间耦合等各种不确定因素,使得简单的闭环控制无法获得理想的污水处理效果。为使污水处理出水水质达标,对污水处理过程模型依赖小、对各种变化(扰动)因素鲁棒性强、动态响应好的控制方法可满足工程要求。为此,设计一种能够主动估计并消除扰动的抗扰控制方法,有效估计并补偿污水处理过程中存在的各种不确定因素,以获得期望的污水处理效果。数值仿真结果表明,抗扰控制具有较好的抗干扰能力,能够满足控制要求,是一种可行的污水处理控制方案。 展开更多
关键词 废水 厌氧 消化过程 抗扰 控制
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机载三轴云台的ESO_LQR复合控制方法 认领
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作者 林峰 马翰廷 卢艳军 《沈阳航空航天大学学报》 2021年第1期47-53,共7页
针对机载三轴云台在工作时受多种复杂情况干扰的影响,传统的线性二次型调节器(LQR)可能无法快速隔离扰动从而导致系统鲁棒性变差的问题,提出扩张状态观测器(ESO)_LQR复合控制策略,通过ESO实时观测估计云台电机转轴上的非线性扰动并对其... 针对机载三轴云台在工作时受多种复杂情况干扰的影响,传统的线性二次型调节器(LQR)可能无法快速隔离扰动从而导致系统鲁棒性变差的问题,提出扩张状态观测器(ESO)_LQR复合控制策略,通过ESO实时观测估计云台电机转轴上的非线性扰动并对其进行补偿以提高LQR姿态角控制器的鲁棒性,提高了机载三轴云台系统的控制品质。通过仿真验证了该方法可以有效克服无人机机动及云台内部控制器耦合带来的力矩干扰,有效提高了系统的控制质量。 展开更多
关键词 三轴云台 姿态控制 扩张状态观测器 LQR 抗扰
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Fractional-Order Proportional-Integral-Derivative Linear Active Disturbance Rejection Control Design and Parameter Optimization for Hypersonic Vehicles with Actuator Faults 认领 被引量:1
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作者 Ke Gao Jia Song +1 位作者 Xu Wang Huifeng Li 《清华大学学报:自然科学版(英文版)》 SCIE EI CAS CSCD 2021年第1期9-23,共15页
The hypersonic vehicle model is characterized by strong coupling,nonlinearity,and acute changes of aerodynamic parameters,which are challenging for control system design.This study investigates a novel compound contro... The hypersonic vehicle model is characterized by strong coupling,nonlinearity,and acute changes of aerodynamic parameters,which are challenging for control system design.This study investigates a novel compound control scheme that combines the advantages of the Fractional-Order Proportional-Integral-Derivative(FOPID)controller and Linear Active Disturbance Rejection Control(LADRC)for reentry flight control of hypersonic vehicles with actuator faults.First,given that the controller has adjustable parameters,the frequency-domain analysis-method-based parameter tuning strategy is utilized for the FOPID controller and LADRC method(FOLADRC).Then,the influences of the actuator model on the anti-disturbance capability and parameter tuning of the FOLADRC-based closed-loop control system are analyzed.Finally,the simulation results indicate that the proposed FOLADRC approach has satisfactory performance in terms of rapidity,accuracy,and robustness under the normal operating condition and actuator fault condition. 展开更多
关键词 Active Disturbance Rejection Control(ADRC) Fractional-Order Proportional-Integral-Derivative(FOPID) Linear Extended State Observer(LESO) Near Space Hypersonic Vehicle(NSHV) actuator faults
Fuzzy Sliding Mode Active Disturbance Rejection Control of an Autonomous Underwater Vehicle-Manipulator System 认领
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作者 ANG Hongdu LI Xiaogang +2 位作者 LIU Xin KARKOUB Mansour ZHOU Liqin 《中国海洋大学学报:英文版》 SCIE CAS CSCD 2020年第5期1081-1093,共13页
In this paper, a fuzzy sliding mode active disturbance rejection control(FSMADRC) scheme is proposed for an autonomous underwater vehicle-manipulator system(AUVMS) with a two-link and three-joint manipulator. First, t... In this paper, a fuzzy sliding mode active disturbance rejection control(FSMADRC) scheme is proposed for an autonomous underwater vehicle-manipulator system(AUVMS) with a two-link and three-joint manipulator. First, the AUVMS is separated into nine subsystems, and the combined effects of dynamic uncertainties, hydrodynamic force, unknown disturbances, and nonlinear coupling terms on each subsystem are lumped into a single total disturbance. Next, a linear extended state observer(LESO) is presented to estimate the total disturbance. Then, a sliding mode active disturbance rejection control(SMADRC) scheme is proposed to enhance the robustness of the control system. The stability of the SMADRC and the estimation errors of the LESO are analyzed. Because it is difficult to simultaneously adjust several parameters for a LESO-based SMADRC scheme, a fuzzy logic control(FLC) scheme is used to formulate the FSMADRC to determine the appropriate parameters adaptively for practical applications. Finally, two AUVMS tasks are illustrated to test the trajectory tracking performance of the closed-loop system and its ability to reject and attenuate the total disturbance. The simulation results show that the proposed FSMADRC scheme achieves better performance and consume less energy than conventional PID and FLC techniques. 展开更多
关键词 Fuzzy sliding mode active disturbance rejection controller(FSMADRC) linear extended state observer(LESO) auto-nomous underwater vehicle-manipulator system(AUVMS) total disturbance fuzzy logic control
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Adaptive Equivalent-input-disturbance Approach to Improving Disturbance-rejection Performance 认领
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作者 Ze-Wen Wang Jin-Hua She Guang-Jun Wang 《国际自动化与计算杂志:英文版》 EI CSCD 2020年第5期701-712,共12页
This paper presents an adaptive equivalent-input-disturbance(AEID)approach that contains a new adjustable gain to improve disturbance-rejection performance.A linear matrix inequality is derived to design the parameter... This paper presents an adaptive equivalent-input-disturbance(AEID)approach that contains a new adjustable gain to improve disturbance-rejection performance.A linear matrix inequality is derived to design the parameters of a control system.An adaptive law for the adjustable gain is presented based on the combination of the root locus method and Lyapunov stability theory to guarantee the stability of the AEID-based system.The adjustable gain is limited in an allowable range and the information for adjusting is obtained from the state of the system.Simulation results show that the method is effective and robust.A comparison with the conventional EID approach demonstrates the validity and superiority of the method. 展开更多
关键词 Adaptive control disturbance rejection equivalent input disturbance(EID) linear matrix inequality(LMI) Lyapunov stability root locus
惯性稳定平台的扰动观测器/不完全微分PID复合控制 认领 被引量:2
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作者 钟婧佳 杨功流 +1 位作者 王汀 于沛 《导弹与航天运载技术》 CSCD 北大核心 2020年第2期72-77,共6页
为提高惯性稳定平台控制系统的稳态性能,提出了一种扰动观测器与不完全微分PID相结合的复合控制算法。利用扰动观测器将控制系统中存在的外部扰动观测出来并补偿到原系统中,在增强系统扰动抑制能力、提高鲁棒性的同时,提高系统稳定精度... 为提高惯性稳定平台控制系统的稳态性能,提出了一种扰动观测器与不完全微分PID相结合的复合控制算法。利用扰动观测器将控制系统中存在的外部扰动观测出来并补偿到原系统中,在增强系统扰动抑制能力、提高鲁棒性的同时,提高系统稳定精度。仿真结果表明:扰动观测器/不完全微分PID复合控制算法可显著改善惯性稳定平台的稳态性能,对比于常规PID校正方法,复合控制方法不仅提高了系统的响应速度,而且显著提高系统的扰动抑制能力,提高稳定精度。 展开更多
关键词 惯性稳定平台 扰动观测器 不完全微分PID 扰动抑制
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Stabilization for a Hybrid System of Elasticity with Boundary Disturbances 认领
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作者 CHEN Zijun JIANG Weisheng 《系统科学与复杂性学报:英文版》 SCIE EI CSCD 2020年第6期1873-1885,共13页
The paper deals with a boundary feedback stabilization problem of a hybrid system with disturbances, which is clamped at one end and linked to a rigid body at the other end. The active disturbance rejection control ap... The paper deals with a boundary feedback stabilization problem of a hybrid system with disturbances, which is clamped at one end and linked to a rigid body at the other end. The active disturbance rejection control approach is adopted in investigation. State observers are first designed to estimate disturbances, and then boundary feedback controllers are proposed to cancel the disturbances.Moreover, under different assumptions of time varying high gain functions, the asymptotical stability and the exponential stability of the closed-loop system are proved by the Lyapunov function approach.Finally, numerical simulations are presented to validate the theoretical conclusions. 展开更多
关键词 Active disturbance rejection control boundary disturbance hybrid system STABILITY
Active Disturbance Rejection Controller Based Heading Control of Underwater Flight Vehicles 认领
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作者 郑天海 冯正平 +1 位作者 赵硕 潘万钧 《上海交通大学学报:英文版》 EI 2020年第4期441-446,共6页
The total disturbance estimated by the extended state observer(ESO)in active disturbance rejection controller(ADRC)is affected greatly by measurement noise when the control step is small in heading control of underwat... The total disturbance estimated by the extended state observer(ESO)in active disturbance rejection controller(ADRC)is affected greatly by measurement noise when the control step is small in heading control of underwater flight vehicles(UFVs).In order to prevent rudder from high-frequency chattering caused by measurement noise,a tracking-differentiator(TD)is integrated to the ESO to develop an improved ADRC scheme.The improved ADRC suppresses the impact of sensor noise.Both the results of simulations and tank tests show the effectiveness of improved ADRC based heading control. 展开更多
关键词 active disturbance rejection control(ADRC) tracking-differentiator(TD) extended state observer(ESO) total disturbance CHATTERING underwater flight vehicle(UFV)
具备干扰抑制能力的柔性多状态开关直流电压控制策略 认领
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作者 沈聪 张国荣 +3 位作者 彭勃 解润生 侯立凯 丁晓通 《高电压技术》 EI CAS CSCD 北大核心 2020年第4期1198-1205,共8页
为抑制系统干扰对柔性多状态开关(flexiblemulti-stateswitch,FMSS)直流电压的影响,提出了一种基于改进型线性扩张状态观测器(linear extended state observer,LESO)的FMSS直流电压控制策略。首先,根据直流电压动态方程和系统变量间的... 为抑制系统干扰对柔性多状态开关(flexiblemulti-stateswitch,FMSS)直流电压的影响,提出了一种基于改进型线性扩张状态观测器(linear extended state observer,LESO)的FMSS直流电压控制策略。首先,根据直流电压动态方程和系统变量间的非线性关系设计了直流电压控制外环;然后,采用将干扰观测值前馈的干扰抑制方案,通过选取新的误差函数和状态变量提出了一种用于干扰观测的改进型LESO;最后,根据直流电压响应函数设计了干扰前馈环节。仿真结果表明,在干扰下FMSS直流电压波动比采用经典LESO时减小50%,同时直流电压恢复稳定的时间缩短13%,端口输出有功超调减小42%。因此所提策略能够有效抑制系统干扰对FMSS直流电压的影响。 展开更多
关键词 柔性多状态开关 直流电压控制 线性扩张状态观测器 干扰抑制 干扰观测
基于组合非线性反馈的机器人鲁棒控制方法 认领
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作者 公成龙 蒋沅 代冀阳 《火力与指挥控制》 CSCD 北大核心 2020年第5期130-134,共5页
自身关节摩擦或外部环境扰动不可避免地会对机器人系统产生不利影响,致使系统产生定位误差和抖动,从而弱化系统的控制性能。所使用的方法在组合非线性反馈(CNF)控制器的基础上加入干扰估计补偿项(鲁棒项)所形成的新型控制器可以有效地... 自身关节摩擦或外部环境扰动不可避免地会对机器人系统产生不利影响,致使系统产生定位误差和抖动,从而弱化系统的控制性能。所使用的方法在组合非线性反馈(CNF)控制器的基础上加入干扰估计补偿项(鲁棒项)所形成的新型控制器可以有效地解决这个问题。最终仿真结果表明,新型控制器不但能保留原有组合非线性反馈控制方法的优点,还可以有效抑制摩擦等扰动对系统的影响,使系统获得更好的控制性能并保持较强的鲁棒性。 展开更多
关键词 机器人 轨迹跟踪 组合非线性 鲁棒控制 扰动抑制
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System construction of a four-side primary permanent-magnet linear motor drive mechanical press 认领
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作者 Jintao LIANG Zhengfeng MING Peida LI 《机械工程前沿:英文版》 SCIE CSCD 2020年第4期600-609,共10页
A primary permanent-magnet linear motor (PPMLM) has a robust secondary structure and high force density and is appropriate for direct-drive mechanical press. The structure of a four-side PPMLM drive press is presented... A primary permanent-magnet linear motor (PPMLM) has a robust secondary structure and high force density and is appropriate for direct-drive mechanical press. The structure of a four-side PPMLM drive press is presented based on our previous research. The entire press control system is constructed to realize various flexible forming processes. The control system scheme is determined in accordance with the mathematical model of PPMLM, and active disturbance rejection control is implemented in the servo controller. Field-circuit coupling simulation is applied to estimate the system’s performance. Then, a press prototype with 6 kN nominal force is fabricated, and the hardware platform of the control system is constructed for experimental study. Punch strokes with 0.06 m displacement are implemented at trapezoidal speeds of 0.1 and 0.2 m/s;the dynamic position tracking errors are less than 0.45 and 0.82 mm, respectively. Afterward, continuous reciprocating strokes are performed, and the positioning errors at the bottom dead center are less than 0.015 mm. Complex pulse trajectories are also achieved. The proposed PPMLM drive press exhibits a fast dynamic response and favorable tracking precision and is suitable for various forming processes. 展开更多
关键词 mechanical press direct drive primary permanent-magnet linear motor(PPMLM) servo system active disturbance rejection control(ADRC) prototype experiment
The Indirect Shared Steering Control Under Double Loop Structure of Driver and Automation 认领 被引量:2
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作者 Yantao Tian Yanbo Zhao +2 位作者 Yiran Shi Xuanhao Cao Ding-Li Yu 《自动化学报:英文版》 SCIE EI CSCD 2020年第5期1403-1416,共14页
Due to the critical defects of techniques in fully autonomous vehicles,man-machine cooperative driving is still of great significance in today’s transportation system.Unlike the previous shared control structure,this... Due to the critical defects of techniques in fully autonomous vehicles,man-machine cooperative driving is still of great significance in today’s transportation system.Unlike the previous shared control structure,this paper introduces a double loop structure which is applied to indirect shared steering control between driver and automation.In contrast to the tandem indirect shared control,the parallel indirect shared control put the authority allocation system of steering angle into the framework to allocate the corresponding weighting coefficients reasonably and output the final desired steering angle according to the current deviation of vehicle and the accuracy of steering angles.Besides,the active disturbance rejection controller(ADRC)is also added in the frame in order to track the desired steering angle fleetly and accurately as well as restrain the internal and external disturbances effectively which including the steering friction torque,wind speed and ground interference etc.Eventually,we validated the advantages of double loop framework through three sets of double lane change and slalom experiments,respectively.Exactly as we expected,the simulation results show that the double loop structure can effectively reduce the lateral displacement error caused by the driver or the controller,significantly improve the tracking precision and keep great performance in trajectory tracking characteristics when driving errors occur in one of driver and controller. 展开更多
关键词 Active disturbance rejection controller(ADRC) authority allocation indirect shared control
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三明治结构挠性传动系统的PID-P复合控制 认领
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作者 孟范伟 宋朋涛 +1 位作者 刘凯 杨朋辉 《控制理论与应用》 EI CAS CSCD 北大核心 2020年第11期2432-2440,共9页
针对三明治系统的弱阻尼挠性模态引起的机械谐振问题及齿隙非线性因素的影响给出了一种PID–P复合控制方法.系统中齿轮力矩反馈至齿轮前端经死区非线性后引起振荡加剧.为此本文提出将系统结构中的反馈齿轮力矩当作扰动信号来处理,设计... 针对三明治系统的弱阻尼挠性模态引起的机械谐振问题及齿隙非线性因素的影响给出了一种PID–P复合控制方法.系统中齿轮力矩反馈至齿轮前端经死区非线性后引起振荡加剧.为此本文提出将系统结构中的反馈齿轮力矩当作扰动信号来处理,设计了基于对象输入输出的内环反馈扰动观测器.文中给出的控制器未知参数配置的系数表法简单易懂,且物理意义清晰.仿真结果表明,文中提出的外环PID–P控制和内环反馈型扰动补偿的复合控制策略可以很好的抑制由齿轮间隙引起的振荡,而且可以获得较好的扭矩传递性能.更重要的是相对于先进的控制设计理论来说,控制器易于实现. 展开更多
关键词 振动控制 扰动抑制 弱阻尼挠性模态 三明治系统 PID–P控制
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无人机-无人车异构时变编队控制与扰动抑制 认领
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作者 周思全 董希旺 +1 位作者 李清东 任章 《航空学报》 EI CAS CSCD 北大核心 2020年第S01期128-139,共12页
研究了无人机-无人车异构系统时变输出编队控制与扰动抑制问题,要求多无人机与无人车在受到未知外部扰动的情况下,保持设计的输出时变编队构型。首先,对无人机与无人车进行单体运动学与动力学建模,同时建立扰动模型,并引入代数图论概念... 研究了无人机-无人车异构系统时变输出编队控制与扰动抑制问题,要求多无人机与无人车在受到未知外部扰动的情况下,保持设计的输出时变编队构型。首先,对无人机与无人车进行单体运动学与动力学建模,同时建立扰动模型,并引入代数图论概念,建立异构集群系统的协同控制模型。然后,对各无人机-无人车设计了具有分层架构的分布式时变输出编队控制器,包含基于一致性理论的编队中心估计项和基于内模原理的扰动抑制补偿项。进一步分析异构系统实现输出时变编队的可行性条件,给出了分布式编队控制器的参数选取算法,并证明了时变编队控制器构成的闭环系统的稳定性。最后,通过仿真算例来验证所设计的编队控制器的有效性。 展开更多
关键词 无人机-无人车 异构系统 分布式控制 时变输出编队 扰动抑制
双框架控制力矩陀螺框架系统的扰动观测及抑制 认领
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作者 李海涛 宋鹏 侯林 《光学精密工程》 EI CAS CSCD 北大核心 2020年第2期340-349,共10页
内外框架间的耦合力矩、非线性摩擦和未建模动态是影响双框架控制力矩陀螺框架系统高精度角速率伺服控制的主要因素。为提高框架系统的干扰抑制能力,保证框架系统输出角速率精度,本文提出了一种基于非线性级联扩张状态观测器和滑模控制... 内外框架间的耦合力矩、非线性摩擦和未建模动态是影响双框架控制力矩陀螺框架系统高精度角速率伺服控制的主要因素。为提高框架系统的干扰抑制能力,保证框架系统输出角速率精度,本文提出了一种基于非线性级联扩张状态观测器和滑模控制的复合扰动抑制方法。框架系统中的所有干扰都被认为是集总干扰并由设计的NCESO估计,通过滑模控制可从系统输出通道中消除集总干扰的影响。最后,将本文提出的控制方法与线性级联扩张状态观测器和状态反馈结合的复合控制方法进行了对比仿真实验。仿真和实验结果表明,本文提出的方法具有更好的干扰抑制和动态响应性能,内框架角速度波动从0.5(°)/s减小到0.2(°)/s,外框架角速度波动从0.45(°)/s减小到0.15(°)/s;跟踪正弦参考信号时,速度跟踪误差从1.8(°)/s减小到1.2(°)/s,相位滞后从8°减小到1.3°。 展开更多
关键词 控制力矩陀螺 框架伺服系统 非线性控制 扩张状态观测器 滑模控制器 干扰抑制
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Consensus disturbance rejection control of directed multi-agent networks with extended state observer 认领
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作者 Shaopan GUO Zhongkui LI +1 位作者 Yifeng NIU Lizhen WU 《中国航空学报:英文版》 SCIE EI CAS CSCD 2020年第5期1486-1493,共8页
This paper investigates the consensus disturbance rejection problem among multiple high-order agents with directed graphs.Based on disturbance observers,distributed consensus disturbance rejection protocols are constr... This paper investigates the consensus disturbance rejection problem among multiple high-order agents with directed graphs.Based on disturbance observers,distributed consensus disturbance rejection protocols are constructed in leaderless and leader-follower consensus setups.Different from the previous related papers,the consensus protocols in this paper are developed in a fully distributed fashion,relying on only the state information of each agent and its neighbors.Sufficient conditions are provided to guarantee that the asymptotic stability of high-order multi-agent systems can be reached with matched disturbances. 展开更多
关键词 Adaptive control Consensus control Distributed control Disturbance rejection Multi-agent systems
扰动抑制广义预测控制及其在SCR脱硝系统中的应用 认领
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作者 葛浩 吕剑虹 《工业控制计算机》 2020年第5期127-130,共4页
为解决选择性催化还原法(Selective Catalytic Reduction,SCR)脱硝控制系统实际运行过程中调节品质差的问题,以广义预测控制为基础,结合设定值滤波器,设计了前馈强化的广义预测控制。仿真结果表明,与未进行前馈强化的广义预测控制相比,... 为解决选择性催化还原法(Selective Catalytic Reduction,SCR)脱硝控制系统实际运行过程中调节品质差的问题,以广义预测控制为基础,结合设定值滤波器,设计了前馈强化的广义预测控制。仿真结果表明,与未进行前馈强化的广义预测控制相比,前馈强化的广义预测控制在保证设定值跟踪能力的情况下,抗扰能力显著提升。在此基础之上,考虑对SCR催化剂性能进行慢速校正,设计新的脱硝控制策略。工程应用表明,所提脱硝控制策略的抗扰及设定值跟踪能力皆优于以PID为基础的常规脱硝控制方案。 展开更多
关键词 选择性催化还原法 广义预测控制 扰动抑制 氮氧化物排放
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High AOA decoupling control for aircraft based on ADRC 认领
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作者 LIU Junjie SUN Mingwei +1 位作者 CHEN Zengqiang SUN Qinglin 《系统工程与电子技术:英文版》 SCIE EI CSCD 2020年第2期393-402,共10页
In this paper, a practical decoupling control scheme for fighter aircraft is proposed to achieve high angle of attack(AOA)tracking and super maneuver action by utilizing the thrust vector technology. Firstly, a six de... In this paper, a practical decoupling control scheme for fighter aircraft is proposed to achieve high angle of attack(AOA)tracking and super maneuver action by utilizing the thrust vector technology. Firstly, a six degree-of-freedom(DOF) nonlinear model with 12 variables is given. Due to low sufficiency of the aerodynamic actuators at high AOA, a thrust vector model with rotatable engine nozzles is derived. Secondly, the active disturbance rejection control(ADRC) is used to realize a three-channel decoupling control such that a strong coupling between different channels can be treated as total disturbance, which is estimated by the designed extended state observer. The control surface allocation is implemented by the traditional daisy chain method. Finally,the effectiveness of the presented control strategy is demonstrated by some numerical simulation results. 展开更多
关键词 HIGH angle of attack(AOA) DECOUPLING CONTROL linear extended state observer(LESO) active disturbance REJECTION control(ADRC) thrust vector technology CONTROL allocation
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