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| 1 | 基于多求和不等式输出反馈Lyapunov判据的时变时滞电力系统二次调频控制显示文摘电力系统使用通信网络进行动态调频时引起的时滞问题会对系统稳定性造成很大威胁。针对负荷频率控制中的网络化时滞问题,建立考虑时变时滞特性的负荷频率控制离散化状态空间模型。采用多求和不等式,构造一种具有低保守性的Lyapunov稳定判据来求解区间时变时滞负荷频率控制(load frequency control,LFC)系统的稳定裕度。在此基础上,推导时滞相关输出反馈增益的线性矩阵不等式(linear matrix inequality,LMI)准则来设计二次调频控制器参数。仿真结果表明,该文所提出的稳定判据能够求解更大的时滞稳定裕度,具有较低的保守性。所提出的控制器设计准则能够快速求解时变时滞下输出反馈增益,有效抑制小扰动下系统的频率振荡,使系统具有时滞稳定性。 | 周一辰 覃露 李永刚 | 2021 | 电网技术2021，45，8： | 7 |
| 2 | Comparative Study of Trajectory Tracking Control for Automated Vehicles via Model Predictive Control and Robust H-infinity State Feedback Control显示文摘A comparative study of model predictive control(MPC)schemes and robust Hstate feedback control(RSC)method for trajectory tracking is proposed in this paper.The main objective of this paper is to compare MPC and RSC controllers’performance in tracking predefined trajectory under different scenarios.MPC controller is designed based on the simple longitudinal-yaw-lateral motions of a single-track vehicle with a linear tire,which is an approximation of the more realistic model of a vehicle with double-track motion with a non-linear tire mode.RSC is designed on the basis of the same method as adopted for the MPC controller to achieve a fair comparison.Then,three test cases are built in CarSim-Simulink joint platform.Specifically,the verification test is used to test the tracking accuracy of MPC and RSC controller under well road conditions.Besides,the double lane change test with low road adhesion is designed to find the maximum velocity that both controllers can carry out while guaranteeing stability.Furthermore,an extreme curve test is built where the road adhesion changes suddenly,in order to test the performance of both controllers under extreme conditions.Finally,the advantages and disadvantages of MPC and RSC under different scenarios are also discussed. | Kai Yang Xiaolin Tang Yechen Qin Yanjun Huang Hong Wang Huayan Pu | 2021 | Chinese Journal of Mechanical Engineering2021，34，4： | 6 |
| 3 | 一种图像寻的空地导弹的制导控制方法显示文摘鉴于图像寻的空地导弹可实现威胁目标要害部位的精确打击,提出了一种适用于图像寻的空地导弹的制导控制方法。在图像寻的制导特性详细分析的基础上,确定制导控制系统组成,给出了目标指向计算方法。通过倾斜稳定控制、姿态控制、高度控制、比例导引控制、重力补偿控制、环境适应性补偿控制、落角约束控制等控制方案的设计与有机组合,实现图像寻的空地导弹制导控制方案设计。飞行实验数据表明,采用本文所述方法可实现图像寻的空地导弹的稳定控制,飞行所得弹道和弹体姿态结果与理论设计相吻合。 | 邹汝平 陈士超 陈韵 王玄 | 2021 | 战术导弹技术2021，，1： | 3 |
| 4 | 激光寻的空地导弹制导控制方法显示文摘针对半主动激光寻的空地导弹的精确快速打击需求,提出一种基于测姿陀螺中制导与激光寻的末制导的空地导弹制导控制方法。分析激光寻的空地导弹的制导特性,在弹上仅安装陀螺仪条件下,分别对导弹俯仰、偏航、滚转3个通道构建不同的控制系统结构,通过倾斜稳定控制、姿态控制、比例导引控制以及程序控制的设计与有机结合,实现导弹弹体的稳定控制以及高概率目标截获,并对高精度激光启动照射时间的确定进行研究。飞行试验结果表明,采用该方法可实现激光寻的空地导弹的稳定控制,飞行所得弹道和弹体姿态结果与理论设计相吻合。 | 邹汝平 陈士超 陈韵 张建灵 | 2021 | 兵工学报2021，42，1： | 3 |
| 5 | The design of adaptive control algorithm for chopper power supply显示文摘Purpose The paper focuses on the renovation of the quadrupole and sextupole magnet power supply(referred to as the Chopper power supply)in the BEPCII series maintenance and renovation project(BIIU)and develops a fully digital control system based on SoC FPGA to achieve digital closed-loop control of the power supply.At the same time,adaptive algorithms are loaded into the control system to automatically optimize the closed-loop parameters[1],thereby avoiding the tedious manual parameter debugging process.Methods A digital control platform has been employed to integrate the digital control of the Chopper power supply,using SoC FPGA as the signal processing core.This platform comprises a core board,a control system backplane,an AD board,a digital signal processing DIO board,and a power board.A closed-loop control system with the PI regulator as the main component has been embedded into SoC FPGA to achieve high-precision closed-loop control of output current[2].To obtain the mathematical model of the controlled object,a system identification algorithm has been employed,and the regulator parameters have been optimized using a genetic algorithm.Results The controller and control algorithm have been implemented on a desktop power supply prototype,and their control effectiveness has been validated.Conclusions Experimental results have demonstrated the feasibility of the digital transformation plan for the quadrupole and sextupole magnet power supply.The Chopper power supply can now automatically adjust PI control parameters for different loads,and stability tests of the power supply output current and output voltage ripple have been conducted,meeting or exceeding the physical requirements. | Su Wentong | 2023 | Radiation Detection Technology and Methods2023，7，4： | 0 |
| 6 | Stability Analysis of Sampled-data Control System and Its Application to Electric Power Market显示文摘The stability of sampled-data systems is investigated using a new type of Lyapunov functional.The interval from the sampling point t_(k) to t_(k+1) is assumed to be a sampling interval.By fully utilizing the characteristic information on the whole sampling interval,a new two-sided closed-loop Lyapunov functional is proposed,which utilizes the information on both the intervals from the sampling point t to k_(t) and from t to t_(k+1).Based on the two-sided closed-loop Lyapunov functional and modified free-matrix-based inequality,a less conservative stability criterion is derived for a sampled-data control system,and three numerical examples are provided to verify the effectiveness and reduced conservativeness of the proposed method.Furthermore,the proposed method is applied to solve the stability problem of electric power markets,and the practical significance of reducing the conservativeness is discussed. | Tian Zhang Shenping Xiao | 2020 | Chinese Journal of Electrical Engineering2020，6，1： | 0 |
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