共查询到19条相似文献，搜索用时 125 毫秒
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异步电动机的模型特点是一多变量、强耦合的非线性系统。本文根据异步电机理论,建立了异步电动机的数学模型,给出了异步电动机转子磁场矢量控制系统基本结构和矢量控制系统仿真模型,仿真结果证明了所建电机模型的正确性。 相似文献
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针对传统矢量控制系统磁链观测不准,且需要速度传感器的问题,提出了一种基于MRAS磁链观测、转速估计的无速度传感器异步电机矢量控制系统。介绍了磁链观测、转速估计的MRAS结构,并运用Popov超稳定理论推导出了其对应自适应律,建立了实验系统。实验结果表明,该矢量控制系统在启动、调速、稳态运行时具有良好的静、动态性能,是一种高性能的交流调速系统。 相似文献
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在深入阐述了异步电机的结构和矢量控制原理的基础上,介绍了异步电机矢量控制系统的通用设计方法。利用MATLAB/SIMULINK相关模块实现了交流电机闭环数字系统的仿真模型,并在基于TMS320LF2407的核心板上,实现了闭环PWM实验控制系统。 相似文献
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永磁同步电机速度环的滑模变结构控制 总被引：1，自引：0，他引：1
在永磁同步电机解耦数学模型的基础上,本文提出了一种把滑模变结构原理用于永磁同步电机的矢量控制系统的方法。首先详细阐述了滑模变结构的基本原理,然后采用速度环的滑模变结构来取代传统的PI控制,并对两个系统进行了仿真分析,仿真结果证明采用速度环的滑模变结构控制系统确有其优越性。 相似文献
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本文介绍了采用SVPWM调制的矢量控制系统的原理,并在Matlab/Simulink环境下建立了系统的仿真模型,给出了仿真结果。仿真结果证明了该模型的有效性,并验证了其他控制算法,为感应电机系统的设计和调试提供了思路。 相似文献
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按转子磁链定向的矢量控制系统仿真研究 总被引：2，自引：0，他引：2
详细分析矢量控制系统对异步电机电磁转矩实时控制的原理,构建带转矩内环磁链闭环按照转子磁链定向矢量控制结构,对系统的各部分进行了详细的阐述。利用仿真工具建立了仿真模型,结果表明该方法实现电磁转矩控制,达到良好的调速性能。 相似文献
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详细介绍了异步电机矢量控制技术的发展,分析了矢量控制技术研究现状,指出无速度传感器技术是目前矢量控制的研究热点。 相似文献
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简要分析交流传动控制异步电动机的优越性能,概述矢量控制特别是电压型PWM变频调速的矢量控制系统在异步电动机控制上的优缺点。分析了VVVF逆变器矢量控制在城市快轨车中的应用。 相似文献
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介绍了基于AT89S52单片机,利用红外传感器直流电机的转速,控制直流电机的转动速度,用PWM调速方式控制直流电机转动的速度,以及停止转动,并可以自动调节速度至预先设定的速度。整个系统的电路逻辑结构简单,可靠性高,实现功能强。 相似文献
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《Journal of The Franklin Institute》2023,360(13):9378-9398
This paper presents an additive-state-decomposition-based model predictive tracking control and disturbance rejection method for a permanent magnet synchronous motor (PMSM) servo system subject to unknown parameter perturbations, unmodeled dynamics, and time-varying load torque. The basic idea of this method is to equivalently decompose the original system into a primary system for handling the tracking control subproblem and a secondary system for dealing with the robust stabilization subproblem. A model predictive controller is designed for the primary system to achieve high-accuracy tracking of the reference speed. As for the secondary system, a novel high-order generalized extended state observer (HGESO) is constructed to estimate the multiple disturbances simultaneously, and a state feedback control law incorporating a disturbance compensator is developed to eliminate the adverse effect of the multiple disturbances on the system output. By combining the control inputs of the two subsystems together, the control objectives of the original system can be achieved. Both the stability criterion and design procedure of the closed-loop control system are developed. Finally, hardware-in-the-loop-based comparative experiments are conducted to demonstrate that the proposed method effectively suppresses the influence of the multiple disturbances on motor speed tracking accuracy and that the control system has both satisfactory dynamic performance and robustness. 相似文献
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《Journal of The Franklin Institute》2023,360(5):3633-3656
In the electric driving system, the measurement of the motor speed error becomes more and more important, which has an impact on the system vibration suppression. In this paper, based on the single-neuron adaptive PID control method, the dual-inertia system considering gear friction torque is modeled and studied. Firstly, the dual-inertia system with gear friction is established, and dynamic differential equations of it are derived; Then, the comprehensive meshing stiffness and the time-varying friction torque of the gear system are deduced; Next, the Ziegler-Nichlos frequency domain response method is adopted to obtain the parameters of the PID controller. The control methods including the PID, Fuzzy-PID with DOB and single-neuron adaptive PID are utilized to adjust the motor speed of the system; Finally, the effects of gear friction, the moment of inertia of load and control methods on motor speed and system error are analyzed. 相似文献
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Chao Ai Wei Gao Lijuan Chen Jiawei Guo Xiangdong Kong Andrew Plummer 《Journal of The Franklin Institute》2021,358(1):296-320
The requirement for An electrical grid-connected wind turbine is that the synchronous generator speed is stable within a required speed range for the electrical grid. In this paper, a hydraulic wind turbine (HWT) system is considered, and the working principle and working conditions of the HWT are introduced. A novel speed control method is proposed in this paper, using both a proportional flow control valve and a variable displacement motor, which are adjusted in combination to control the speed of the HWT. By establishing a state space model of the HWT and solving the nonlinear system with a feedback linearization method, a bivariate tracking controller is constructed to realize accurate speed control under fluctuating wind speed and the load disturbance conditions. The effectiveness of the control method is verified by simulation, but experimental results highlight problems with the method. The theoretical controller is simplified to reduce sensitivity to measurement noise and modeling error. The control effect has been improved to some extent, but it is limited. Based on these results, combined with the sliding mode variable structure control method and the feedback linearization method to solve the problem of measurement noise and modeling error, and the effectiveness of the control law is finally verified experimentally. It lays a theoretical foundation for the practical application of HWT. 相似文献
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Igor Boiko 《Journal of The Franklin Institute》2010,347(6):899-909
Estimation precision and bandwidth of sliding mode (SM) observers are analyzed in the frequency domain for different settings of the observer design parameters. It was shown previously that the SM observer could be analyzed as a relay feedback-feedforward system. It is feedback with respect to the measured variable of the system being observed, and feedforward with respect to the control applied to the system being observed. This approach is now further extended to analysis of effects of design parameter change on observer performance. An example of SM observer design for estimation of DC motor speed from the measurements of armature current is considered in the paper. The input-output properties of observer dynamics are analyzed with the use of the locus of a perturbed relay system (LPRS) method. 相似文献
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本文主要是在MAX+PLUSII环境下,运用硬件描述语言(VHDL)进行电机转速控制器仿真的实现与分析。PID控制器是电机转速控制系统的一部分,它对转速进行采样,与额定的转速进行比较,并通过微分计算得到电机的控制电流,从而实现对电机转速的调整。 相似文献