共查询到20条相似文献，搜索用时 671 毫秒
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本文提出了一种基于DSP的自细分步进电机控制器系统设计与实现,该控制器利用TI公司的TMS320LF2407A DSP芯片和集成电机驱动芯片构成自细分步进电机控制系统。通过对电机转速和电机驱动芯片H桥的最优开关频率进行比较,确定电机步距角的细分数,从而实现对两台2相式步进电机的优化细分控制,在确保步进电机平稳、精确地运行的同时使电机驱动芯片工作在最佳的开关状态。 相似文献
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邢砚田 《内蒙古科技与经济》2014,(1):63-64
通过设计对变频器控制的电机实现多段速控制,控制器选用了西门子的PLCS7-200进行编程,并设计了上位机工程,可以实时监控电机转速的运行情况。 相似文献
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鉴于混合式步进电机建模的复杂性,提出了利用模糊控制器实现对二相混合式步进电机位置伺服系统进行控制的方法,并详细介绍了位置模糊控制器的设计,并且对该控制方案进行数字仿真。仿真结果表明：该系统在指定转速范围内运行平稳,定位时间短,具有较好的性能。 相似文献
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该设计采用变频器进行压力调节,PLC可编程控制器、变频器作为系统控制的核心部件。随时跟踪管网压力与额定压力的偏差变化,通过程序控制和运算,自动控制水泵投入的台数和电机转速,实现闭环自动调节恒压变量供水。 相似文献
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本文以AT89S52单片机为核心构成云台控制器,通过8279键盘、显示接口芯片实现外部控制信息的输入以及步进电机转速的显示,控制摄像机进行上、下、左、右各方向的行进动作.为保证控制的可靠性,步进电机控制信号的发出不是由单片机完成,而是由专用步进电机驱动模块产生. 相似文献
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无刷直流电机是一个非线性、强耦合的系统,为了提高转速动态响应的快速性,本文设计了一种无刷直流电机的改进自抗扰解耦控制系统,改进的自抗扰控制器各组成部分均采用线性函数。仿真结果表明,与PI控制器相比该控制方案具有良好的转速响应效果,并且对外部扰动和电机模型的不确定性具有较好的鲁棒性和适应能力。 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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为了满足涂附磨具揉曲机的工艺要求,本文设计的涂附磨具揉曲机的自动控制系统以可编程控制器为核心,采用模糊控制技术协调卷取的张力,数字变频器和交流异步电动机控制电动机的速度,力矩控制器和力矩电动机控制收卷速度,张力检测装置检测卷取的张力并构成闭环控制系统。该系统具有速度稳定、张力恒定、可靠性高、操作简便的特点。 相似文献
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S. Ushakumari 《Journal of The Franklin Institute》2017,354(14):5996-6032
In this paper, speed control, torque ripple minimization and Power Factor Correction (PFC) of a Canonical Switching Cell (CSC) with Sinusoidal and Space Vector Pulse Width Modulated (SVPWM) sensorless Permanent Magnet Brushless DC (PMBLDC) motor drive system with varying load is discussed. The constant speed of operation with minimum torque ripples and Unity Power Factor (UPF) operation during transient state is the most difficult control part in the motor drive system. At the starting condition, the current is too high due to the absence of back EMF and therefore the motor will start with high torque ripples. In order to eliminate these torque ripples during starting condition by limiting the starting current of the motor, it is necessary to have properly designed Canonical Switching Cell (CSC) converter and an intelligent controller, which will improve the power factor of the supply system and reliability of the PMBLDC motor drive. Here, the speed control, torque ripple minimization and power factor correction of a sensorless PMBLDC motor during starting and running condition with conventional and fuzzy logic controllers are proposed. The performance parameters of a PMBLDC motor with these controllers is analyzed through MATLAB/Simulink software. 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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Yong-Chao Liu Salah Laghrouche Abdoul N'Diaye Maurizio Cirrincione 《Journal of The Franklin Institute》2021,358(1):400-427
This paper proposes a novel Hermite neural network-based second-order sliding-mode (HNN-SOSM) control strategy for the synchronous reluctance motor (SynRM) drive system. The proposed HNN-SOSM control strategy is a nonlinear vector control strategy consisting of the speed control loop and the current control loop. The speed control loop adopts a composite speed controller, which is composed of three components: 1) a standard super-twisting algorithm-based SOSM (STA-SOSM) controller for achieving the rotor angular speed tracking control, 2) a HNN-based disturbance estimator (HNN-DE) for compensating the lumped disturbance, which is composed of external disturbances and parametric uncertainties, and 3) an error compensator for compensating the approximation error of the HNN-DE. The learning laws for the HNN-DE and the error compensator are derived by the Lyapunov synthesis approach. In the current control loop, considering the magnetic saturation effect, two composite current controllers, each of which comprises two standard STA-SOSM controllers, are designed to make direct and quadrature axes stator current components in the rotor reference frame track their references, respectively. Comparative hardware-in-the-loop (HIL) tests between the proposed HNN-SOSM control strategy and the conventional STA-SOSM control strategy for the SynRM drive system are performed. The results of the HIL tests validate the feasibility and the superiority of the proposed HNN-SOSM control strategy. 相似文献
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A novel adaptive sliding-mode control system is proposed in order to control the speed of an induction motor drive. This design employs the so-called vector (or field oriented) control theory for the induction motor drives. The sliding-mode control is insensitive to uncertainties and presents an adaptive switching gain to relax the requirement for the bound of these uncertainties. The switching gain is adapted using a simple algorithm which does not imply a high computational load. Stability analysis based on Lyapunov theory is also performed in order to guarantee the closed loop stability. Finally, simulation results show not only that the proposed controller provides high-performance dynamic characteristics, but also that this scheme is robust with respect to plant parameter variations and external load disturbances. 相似文献
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The steering torque of automobile EPS steering system is significant for driving steering control and good driving feel. Servo motor control and external interference moment are the core factors affecting EPS steering system. With the advancement of automotive technology, the requirements of EPS control technology have been gradually improved, and the driving and handling of vehicles at high speed have become the key issues. For the current EPS steering system at high speed vibration and steering feel, active disturbance rejection EPS torque control method is proposed, EPS variable mode controller was developed. The control of the variable mode is verified by experiment and the vibration torque from the road is controlled, determine the control frequency of 30 KHz, the amount of current fluctuation is the smallest. The ADRC (active disturbance rejection controller) technology is used to suppress the interference of the road surface, finally, the validity of active immunity is verified by bench test. Steering wheel vibration torque can be reduced by an average of 28.5% to 33.3%. 相似文献
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《Journal of The Franklin Institute》2021,358(15):7394-7412
Today, the quality of accessible power and the response of the system involved are most significant. Many controllers have been used by researchers dealing with issues pertaining to power. Controllers play a significant role in the renewable energy sector in terms of improving the quality of power and offering a speedy system response. This research analyzes the speed of response and harmonics and enhances system performance overall. The existing system consists of a photovoltaic panel, boost converter, multi-level inverter, classic proportional-integral (PI) controller, and three-phase induction motor. The proposed system comprises a photovoltaic-based multi-level inverter, fuzzy logic controller, buck-boost converter, and three-phase induction motor. The output of the photovoltaic panel is connected to a buck-boost converter, and that of the converter to an inverter, while the output of the seven-level multi-level inverter is connected to a three-phase induction motor. Motor speed is controlled by a fuzzy logic controller (FLC). The output of the proportional-integral (PI) controller is compared to that of the fuzzy logic controller. The behavior and performance of the existing system are verified with experimental setup and proposed system are verified by MATLAB and Simulink, and the results recorded. 相似文献