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二自由度控制

二自由度控制的相关文献在1989年到2022年内共计87篇,主要集中在自动化技术、计算机技术、电工技术、机械、仪表工业 等领域,其中期刊论文72篇、会议论文8篇、专利文献1992378篇;相关期刊54种,包括宜春学院学报、太原科技大学学报、沈阳工业大学学报等; 相关会议8种,包括2008电站热工控制研讨会暨自动化信息化技术交流年会、2005中国控制与决策学术年会、中国自动化学会、中国仪器仪表学会2004年西南三省一市自动化与仪器仪表学术年会等;二自由度控制的相关文献由198位作者贡献,包括张井岗、郭庆鼎、张兴等。

二自由度控制—发文量

期刊论文>

论文:72 占比:0.00%

会议论文>

论文:8 占比:0.00%

专利文献>

论文:1992378 占比:100.00%

总计:1992458篇

二自由度控制—发文趋势图

二自由度控制

-研究学者

  • 张井岗
  • 郭庆鼎
  • 张兴
  • 杨淑英
  • 王奇帅
  • 秦忆
  • 谢震
  • 赵志诚
  • 陈志梅
  • 刘志远
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 杜祎君; 成咪; 任振涛
    • 摘要: 针对串级不稳定时滞过程提出了一种改进的二自由度Smith预估控制方法。该方法在副回路采用了内模PID控制,快速消除了副回路干扰对系统性能的影响。主回路采用了二自由度Smith预估控制方法,首先使用了PD控制器将不稳定时滞过程转换为稳定时滞过程,然后在设定值跟随控制回路中引入了通过Bode理想传递函数设计的分数阶控制器,增强了系统的鲁棒性,在干扰抑制回路中使用内模控制改善了系统的抗扰性。经仿真实验验证,该方法不仅参数整定简单,且能使系统具有良好的闭环性能与鲁棒性。
    • 黄新成; 简炜; 陈宇峰; 张金亮; 彭国生; 李艺仁
    • 摘要: 针对传统单自由度PI控制系统难以兼顾抗扰特性和跟踪特性的缺陷,设计了一种基于误差判断的二自由度控制器并给出了参数整定方法。首先,通过简化电流环的数学模型得到转速环的控制目标;然后,采用多主导极点配置法和时域响应性能指标分别设计出二自由度控制器的PI参数;最后,在Simulink平台上搭建了仿真模型并采用基于模型设计(MBD)方式生成嵌入式代码。实验结果验证了所提出的二自由度控制方法的可行性和有效性。
    • 郑峰; 林祥群; 邓长虹; 郑传良; 杨威; 曾麟钧
    • 摘要: 针对LCL型多逆变器并联系统的3类谐振问题,提出了一种降阶新型混合控制算法的谐振抑制策略.该谐振抑制策略基于逆变器分层控制结构,将电流预测模型控制与二自由度控制原理相融合.其中,电流内环控制层采用电流预测模型控制消除其PI控制器及PWM调节器,实现电流内环传递函数单位化;电压外环控制层利用二自由度控制原理,构建被控对象逆模型,实现电压外环传递函数单位化.控制层内、外环的传递函数单位化使谐振传递函数分子、分母间最高阶差降低,从而使得谐振传递函数的伯德图中无谐振尖峰.最后,基于MATLAB/Simulink平台进行仿真验证,结果表明面对不同的谐波源,所提策略均能够保证并网电流的总谐波畸变率小于4%,可有效抑制多逆变器并联系统的谐振.
    • 刘翠梅
    • 摘要: 针对火电机组参与一次调频的功率控制系统,本文设计了二自由度(Two degree of freedom control,2DOF)控制方式,并且给定了控制器的参数.在控制器的设计过程中,通过改变测量变量等方法解决了涡轮机械功率无法测量的问题.最后仿真结果表明,与经典前馈反馈控制和内模控制相比,二自由度控制系统能够很好地满足系统自动发电控制(Automatic Generation Control,AGC)的要求,且性能优于上述两种控制系统.
    • 郑晓明; 蔡彬; 褚晓广; 李金鹏; 刘培臣
    • 摘要: 为应对新能源分布式发电系统接入所致的电网阻抗变化对并网逆变器稳定运行的影响, 提高其应对电网变化的能力, 提出含电网阻抗估测的并网逆变器二自由度控制策略.首先构建含电网阻抗的并网逆变器模型, 研究电网阻抗变化所致的阻抗失配对并网系统稳定性的影响;其次提出一种可独立调整跟随控制和抗扰控制的二自由度控制策略, 设计出跟随控制器及抗扰控制器, 采用非特征次谐波注入法实时估测电网阻抗, 给出含电网阻抗检测的完整二自由度控制方案;最后进行仿真研究和实验验证.结果表明:所提二自由度控制策略具有同时兼顾电流快速跟随和抗电网阻抗扰动能力, 可有效提高并网逆变器的稳定性.%The access of new energy distributed generation system into the grid will cause the grid impedance to change, which can affect the operation stability of grid-connected inverter seriously. In order to improve its ability to respond to the affection and variation in the grid, a two-degree-freedom control strategy with grid impendence detection was proposed in this paper. Firstly, a model of grid-connected inverter with grid impedance was built to explore the influence on the stability of the grid system which is caused by the impedance mismatch due to the grid impedance changes.Secondly, a two-degree-freedom control strategy which can adjust tracking and anti-interference control separately was proposed. Both the tracking controller and anti-interference controller were designed. The uncharacteristic harmonic injection method was adopted to detect the grid impedance in real time and a complete two-degree-freedom control scheme with grid impedance detection was given. Also, its tracking controller and active disturbances rejection controller were designed. Finally, a simulation for this model was carried out with Matlab/Simulink platform which was validated by the experiment results. The research results show that the proposed two-degree-freedom control strategy has the ability of both rapid current tracking and grid impedance disturbance resistance under different grid impedance conditions. It can enhance the stability of the grid-connected inverter effectively.
    • 周英超; 常思勤; 李波
    • 摘要: In order to shorten the power interruption duration of AMT,a time-overlapping gearshift system was developed based on the electromagnetic linear actuators. The structures and working principles of the electromagnetic linear actuators were presented. A coupling system model including mechanical,electric circuit and magnetic circuit subsystems was built. The characteristics of the actuator were analyzed by experiments. The time-overlapping control strategy was presented,and the position compound controller was designed based on the two-degree-of-freedom control principle. The simulation and experimental results show that the proposed position cascade controller achieves good response and disturbance rejection performance. When the speed difference is as 500 r/min and the synchronized equivalent inertia is as 0.01 kg·m2, gear-change from 2nd to 3rd,the time is about 130 ms,the time-overlapping control method has about 20ms time-saving,and the total time is reduced by more than 15%.%为解决电控机械式自动变速器(AMT)动力中断时间过长的问题,研制了一种基于电磁直线执行器的时序重叠换挡系统.介绍了关键部件电磁直线执行器的结构和工作原理,建立了机、电、磁耦合的系统模型,并通过实验进行了性能分析.提出了时序重叠换挡的控制策略,基于二自由度控制原理设计了位置复合控制器.仿真和实验结果表明,提出的位置复合控制器具有较好的系统响应和扰动抑制特性;在转速差为500 r/min、被同步惯量为0.01 kg·m2条件下,采用时序重叠换挡方式由2挡换至3挡的换挡时间约为130 ms,时序重叠控制减少时间约20 ms,换挡时间缩短15%以上.
    • 陈亮亮; 祝长生; 王忠博
    • 摘要: For the vibration suppression of active magnetic bearing (AMB) high-speed flywheel rotor system,a control strategy based on inverse system decoupling and improved two-degree-of-freedom (2DOF) control was proposed in this paper.The AMB flywheel rotor system was decoupled by the inverse system method firstly,so that the AMB flywheel rotor system,which was a nonlinear,strong coupling system,was decoupled into four independent subsystems.Then,the decoupled subsystems were adjusted by the improved 2DOF controller,which can regulate the performances of set-point tracking and disturbance rejection,respectively.In the improved 2DOF controller,the damping control signal was obtained by velocity estimator,so that the ability of against noise can be improved.The stability,setpoint tracking and robustness of control strategy proposed were analyzed in theory,and its ability and effectiveness to control the vibration of AMB high-speed flywheel rotor system were further investigated by simulations and experiments.It is shown that the control strategy proposed can stably suspend the AMB high-speed flywheel rotor system and effectively suppress its vibrations,with the advantages of high stability,strong robustness,and good ability of against noise.%针对电磁轴承高速飞轮转子系统的振动抑制问题,提出了一种基于逆系统解耦和改进型二自由度控制的方法.首先采用逆系统方法对电磁轴承飞轮转子系统进行解耦,将非线性、强耦合的电磁轴承飞轮转子系统解耦为四个彼此独立的子系统,再用改进型二自由度控制器对解耦后的子系统进行整定,使控制系统的设定值跟踪及外扰抑制特性能够分别调节,并通过速度观测器获取阻尼控制信号,增强系统的抗噪声能力.从理论上分析了所提出控制算法的稳定性、设定值跟踪性能及鲁棒性,并对其性能进行了仿真和实验验证.结果表明,该文提出的控制算法能够使飞轮转子稳定悬浮并有效抑制其振动,具有稳定性好、鲁棒性强、抗噪声能力强等优点.
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