共查询到17条相似文献,搜索用时 78 毫秒
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永磁同步电动机(PMSM)在某些参数及工作条件下会出现混沌运动,这将危及电机传动系统的稳定运行,因此如何抑制或消除PMSM中的混沌成为保持其稳定性的关键问题.利用微分几何控制理论,首先从解析上推导出PMSM混沌运动控制律的表达式,然后对控制过程进行仿真.理论分析及数值仿真结果表明:该控制策略不仅行之有效,而且相对其他控制方法具有一定的优越性.研究结果对保证电机传动系统的稳定运行具有较好的参考价值.
关键词:
混沌控制
微分几何
准确线性化
永磁同步电动机 相似文献
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针对永磁同步电动机中存在的混沌运动,给出了一种基于冲洗滤波(washout filter)技术的永磁同步电动机混沌控制方法.该方法以永磁同步电动机的电流作反馈,实现了混沌运动的控制.该控制方法不影响原系统的参数,只需要调整滤波器的控制参数,算法简单、易于工程实现.数值仿真结果表明了该方法的有效性和鲁棒性.
关键词:
冲洗滤波器
永磁同步电动机
混沌控制 相似文献
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采用Lyapunov间接法分析永磁同步电动机系统平衡点的稳定性 ,确定系统参数取值范围 ,研究其分岔、混沌特性 ,并应用基于系统变量延迟反馈的控制及外加周期信号控制两种方法对系统的混沌进行控制 ,取得很好的控制结果。 相似文献
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以直驱式永磁同步风力发电机(D-PMSG)作为研究对象,推导了其数学模型,论证了在某些参数及工作条件下会出现混沌运动,提出了D-PMSG混沌运动的滑模变结构控制方法,通过控制桨距角β来实现.针对风力机系统的非线性,参数变化等特性,根据风力机机理,基于一定假设得到风力机在某一工况点线性模型,进而提出滑模变结构控制方案,充分利用变结构控制对被控对象的模型误差、对象参数的变化以及外部干扰有极佳的不敏感性的优点.仿真结果表明所提出控制方案的有效性,控制响应速度快,控制鲁棒性好,能适用于系统具有不确定
关键词:
风力发电
直驱式永磁同步风力发电机组(D-PMSG)
混沌控制
滑模变结构控制 相似文献
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Controlling chaos in permanent magnet synchronous motor based on finite-time stability theory 下载免费PDF全文
This paper reports that the performance of permanent magnet
synchronous motor (PMSM) degrades due to chaos when its systemic
parameters fall into a certain area. To control the undesirable
chaos in PMSM, a nonlinear controller, which is simple and easy to
be constructed, is presented to achieve finite-time chaos control
based on the finite-time stability theory. Computer simulation
results show that the proposed controller is very effective. The
obtained results may help to maintain the industrial servo driven
system's security operation. 相似文献
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Adaptive synchronization of chaos in permanent magnet synchronous motors based on passivity theory 下载免费PDF全文
An adaptive synchronization control method is proposed for chaotic permanent magnet synchronous motors based on the property of a passive system.We prove that the controller makes the synchronization error system between the driving and the response systems not only passive but also asymptotically stable.The simulation results show that the proposed method is effective and robust against uncertainties in the systemic parameters. 相似文献
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Adaptive synchronization of chaos in permanent magnet synchronous motors based on passivity theory 下载免费PDF全文
An adaptive synchronization control method is proposed for chaotic permanent magnet synchronous motors based on the property of a passive system. We prove that the controller makes the synchronization error system between the driving and the response systems not only passive but also asymptotically stable. The simulation results show that the proposed method is effective and robust against uncertainties in the systemic parameters. 相似文献
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In this paper we investigate the chaotic behaviors of the fractional-order permanent magnet synchronous motor(PMSM).The necessary condition for the existence of chaos in the fractional-order PMSM is deduced.And an adaptivefeedback controller is developed based on the stability theory for fractional systems.The presented control scheme,which contains only one single state variable,is simple and flexible,and it is suitable both for design and for implementation in practice.Simulation is carried out to verify that the obtained scheme is efficient and robust against external interference for controlling the fractional-order PMSM system. 相似文献
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针对部分状态不可测的永磁同步电机混沌系统, 结合自适应滑模控制和扩张状态观测器理论, 提出一种基于扩张状态观测器的永磁同步电机自适应混沌控制方法, 取消了系统所有状态完全可测的限制. 通过坐标变换, 将永磁同步电机混沌模型变为更适宜控制器设计的Brunovsky标准形式. 在系统部分状态和非线性不确定项上界均未知的情况下, 基于扩张状态观测器估计系统未知状态及不确定项, 并设计自适应滑模控制器, 保证系统状态快速稳定收敛至零点. 仿真结果表明, 该控制器能够改善滑模控制的抖振问题以及提高系统鲁棒性.
关键词:
永磁同步电机
混沌控制
扩张状态观测器
自适应滑模 相似文献