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基于神经网络非线性模型的开关磁阻电机调速系统动态仿真 总被引:2,自引:0,他引:2
实现开关磁阻电机调速系统(SRD)的准确动态仿真是进行系统参数优化、控制策略研究的重要依据.本文在以实测开关磁阻电机(SRM)准确特性曲线为样本数据,并基于BP神经网络建立SRM非线性模型的基础上,构建了Matlab环境下SRD系统的整体动态仿真模型.通过仿真揭示了SRD系统的稳态、动态运行特性,实现了系统性能的准确分析,为设计SRD系统高性能控制提供了理论依据.经与实测电流、转速波形对比,验证了本文提出的SRD动态仿真方法的有效性. 相似文献
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以数字信号处理器为主控芯片,建立了开关磁阻电动机调速(SRD)控制系统,设计了自整定模糊PID控制器,实现了开关磁阻电动机转速的实时控制.实验证明,自整定模糊PID控制器兼有模糊控制器和PID控制器的优点,能有效减小系统超调,缩短系统调节时间,提高系统稳态精度,它是一种有效的控制算法,具有较高的应用价值. 相似文献
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本文研究了用于电动车辆的小功率开关磁阻电机调速(SRD)系统的设计,并在转速环设计中运用了自适应模糊PID控制理论。以一台三相6/4极结构的SRM为控制对象,进行了试验。试验结果表明,本系统具有良好的调速性能和控制特性。 相似文献
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开关磁阻电机起动电流小、起动转矩大,能频繁的重载换向,适用于低冲次的塔架式抽油机,但其具有非线性和强耦合性,调速系统难以控制。将PSO(粒子群)自整定PID控制算法引入到开关磁阻电机调速控制系统中来,在分析开关磁阻电机数学模型的基础上建立了开关磁阻电机调速系统的Simulink模型,经MATLAB仿真,该电机在400~1 200 rad/s范围内响应速度比PID控制提高27.2%~55.7%,且大大减小了电机的转矩脉动。经模拟实验验证,利用PSO自整定PID控制可显著提高开关磁阻电机调速系统的抗干扰能力和鲁棒性,使塔架式抽油机的运行噪音大为降低。 相似文献
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Eleni Stoumpou Costas Psychalinos 《International Journal of Circuit Theory and Applications》2011,39(7):719-731
A new systematic method for designing square‐root domain (SRD) linear transformation (LT) filter is introduced in this paper. For this purpose, a substitution table containing the SRD LT equivalent of each passive element has been introduced. The proposed equivalents have been realized by employing appropriate SRD building blocks with low‐voltage operation capability. As a design example, a 3rd‐order SRD LT filter has been realized and its performance has been evaluated through simulation results. In addition, the most important performance factors of the SRD filter have been compared with those achieved by the SRD filters derived according to the leapfrog, wave, and topological emulation methods. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
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Costas Psychalinos 《International Journal of Circuit Theory and Applications》2008,36(2):185-204
A novel technique for designing square‐root domain (SRD) filters is introduced in this paper. The concept of the proposed method is based on the substitution of the passive elements of the corresponding prototype filter by their SRD equivalents. The signal processing performed by the proposed SRD equivalents achieves that the voltage at each terminal of the SRD equivalent is the compressed version of the voltage at the corresponding terminal of the passive element, and that the current that flows through the SRD equivalent is the same as that flows through the passive element. The main attractive characteristic of the proposed method is that a quick procedure for designing SRD filters is offered. The validity of the proposed technique was verified by studying the behaviour of a 5th‐order SRD low‐pass filter. In order to demonstrate the benefits offered by the proposed technique, a SRD leapfrog filter was also designed and its performance is compared with that of the active filter that topologically simulates the same prototype filter. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
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反串线圈法间接位置检测技术在开关磁阻发电机系统中的应用研究 总被引:9,自引:2,他引:7
直接的或间接的转子位置检测是开关磁阻电机SRD(Switched Reluctance Drivers)调速系统的主要组成环节。直接位置检测技术能够提供稳定的转子位置信号,但需要增加附加的机械结构,从而了SRD在航空领域的推广应用。间接位置检测技术无需增加机械结构,为SRD在航空领域的应用提供了可能性。在阐述反串线圈法间接位置检测技术的基础上,将该项技术应用到航空开关磁阻发电系统中,进行了大量的实 相似文献
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基于12/8极开关磁阻电动机的准线性模型,对开关磁阻电动机调速系统进行了建模和仿真,分析了在电流斩波控制和角度位置控制两种方式下开关磁阻电动机驱动系统的调速范围,提出了一种宽范围调速运行的控制策略,仿真结果验证了该控制策略的正确性和可行性。 相似文献
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