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近年来,国外提出的 I-PD 调节器在兼顾系统对给定值的响应和对干扰的抑制能力方面比PID 调节器显示出了优越性。本文对这种调节器的抗干扰性能和设计方法进行了较为深入的分析,给出了用单板机构成数字 I-PD 调节器的硬件线路及软件流程图,为 I-PD 调节器在过程控制中的应用提供了依据。 相似文献
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根据某型航空涡轴发动机燃油调节器的结构原理图,分析了该型燃油调节器的调节规律以及调节器基本工作原理.进而结合该型燃油调节器在试验台上得到的部分试验数据,在MATLAB软件的SIMULINK平台上采用LookUp-Table模块构建系统非线性环节,以模拟系统的非线性特性,进而建立了该型燃油调节器的简易数学模型.对建立的燃油调节器模型进行的静态校验结果表明,调节器模型满足了该型燃油调节器的各项性能指标的要求.并结合该型涡轴发动机的数学模型进行了动态联合仿真,通过对动态仿真结果的分析,获得了影响该型调节器性能的关键结构参数及将该型调节器数字化时的采样周期范围. 相似文献
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文章介绍了由两只小功率晶体管构成的开关反馈型二位PID调节器的设计思路、动态分析及闭环运行试验的情况等。这种调节器结构简单、使用方便、性能良好,对于滞后时间较大的电热温控系统尤为适合。 相似文献
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针对一类不确定性时滞系统, 研究线性二次型最优调节器的鲁棒性设计问题. 首先基于级数近似方法, 将原标称时滞系统的最优调节器问题转化为迭代求解一族不含时滞的两点边值问题, 从而获得标称时滞系统最优控制的近似解. 然后将滑模控制理论应用于最优调节器的设计, 使得系统对于不确定性具有全局的鲁棒性, 并且其理想滑动模态与标称系统的最优闭环控制系统相一致, 从而实现了全局鲁棒最优滑模控制. 仿真示例将所提出的方法与相应的二次型最优控制进行比较, 验证了该方法的有效性和优越性. 相似文献
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本文提出了鲁棒(Robust)调节器的一种设计方法,即局部观测器方法。该方法设计的调节器,其阶数比E.J.Davison和A.Goldenberg[1]的方法所设计的调节器的阶数大大降低了,因而更便于实际使用。 相似文献
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This paper studies the resilient (non‐fragile) H∞ output‐feedback control design for discrete‐time uncertain linear systems with controller uncertainty. The design considers parametric norm‐bounded uncertainty in all state‐space matrices of the system, output and controller equations. The paper shows that the resilient H∞ output‐feedback control problem is equivalent to a scaled H∞ output‐feedback control problem of an auxiliary system without any system or controller uncertainty. Using the existing optimal H∞ design to solve the auxiliary system, the design guarantees that the resultant closed‐loop systems are quadratically stable with disturbance attenuation γ for all admissible system and controller uncertainties. A numerical example is given to illustrate the design method and its benefits. 相似文献
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In this paper, by constructing appropriate Lyapunov–Krasovskii functionals (LKF) and applying the model transformation of time-delay systems, a design scheme of state feedback controller for a class of feedforward nonlinear systems with a delay in the input is proposed. The designed controllers have a very simple structure and do not involve any saturation or recursive computation, which is widely applied in designing a controller of feedforward nonlinear systems. Using the transformation of coordinates and the property of Hurwitz polynomial, the problem of designing controller can be converted into the problem of finding a parameter, which can be solved by solving the optimization problem with linear matrix inequalities (LMIs) constraints. A simulation example is given to show the effectiveness of the proposed design procedure. 相似文献
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给出一种基于H∞控制理论的二自由度内模控制器设计方法.考虑了标称模型与实际模型之间存在乘性摄动时的失配性,利用适当的状态变换,将跟踪问题的控制器设计转化成一个调节问题的标准H∞控制器设计问题,再利用H∞输出动态反馈完成了控制器设计.以电力系统模型为例设计了一个二自由度H∞励磁控制器,仿真结果表明了此控制器的有效性. 相似文献
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Output tracking controller design problem is dealt with for a class of nonlinear systems in strict-feedback form in the presence
of time-varying nonlinear uncertainties and unmodeled dynamics with multi-operation points. A new method based on signal compensation
is proposed to design a robust controller, which consists of a nominal controller and a robust compensator. It is shown that
semiglobal robust tracking property can be achieved. A new feature of our results is that the controller is a linear and time-invariant
one and “explosion of complexity” problem is avoided. 相似文献
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Wen-Hua Chen 《国际强度与非线性控制杂志
》1994,4(5):713-722
》1994,4(5):713-722
The problem of design of minimax robust LQG controllers for linear systems with parameter and noise uncertainties is considered in this paper. Necessary and sufficient conditions for converting this problem to a two-person, zero-sum continuous game problem are presented. A simple procedure for design of a suboptimal minimax robust LQG controller, i.e., the LQG controller for least-favourable model, is proposed. Necessary and sufficient conditions for the existence of a saddle point are established. Under these conditions, the controller obtained is exactly the minimax LQG controller. When there does not exist a saddle point, the worst-case error between the controller obtained and the minimax robust LQG controllers under described uncertainties is bounded. 相似文献
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本文考虑受有限字长影响的离散时间模糊系统的非脆弱H∞控制问题. 假定所设计的控制器具有加性区间型增益变量, 该增益变量反映了控制器数字执行过程中有限字长的影响. 区间型增益变量导致控制器设计具有数值计算问题, 而模糊性质的引入进一步增加了控制器设计的复杂性, 使问题变得更具有挑战性. 本文采用结构的顶点分离器方法来解决数值计算问题, 从而给出一个基于线性矩阵不等式的模糊非脆弱H∞控制器设计的两步算法. 该设计结果保证闭环系统渐进稳定并具有指定的H∞性能指标. 最后给出一个数值例子验证所提出方法的有效性. 相似文献
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Coherent H∞ Control for Linear Quantum Systems With Uncertainties in the Interaction Hamiltonian 下载免费PDF全文
This work conducts robust H∞ analysis for a class of quantum systems subject to perturbations in the interaction Hamiltonian. A necessary and sufficient condition for the robustly strict bounded real property of this type of uncertain quantum system is proposed. This paper focuses on the study of coherent robust H∞ controller design for quantum systems with uncertainties in the interaction Hamiltonian. The desired controller is connected with the uncertain quantum system through direct and indirect couplings. A necessary and sufficient condition is provided to build a connection between the robust H∞ control problem and the scaled H∞ control problem. A numerical procedure is provided to obtain coefficients of a coherent controller. An example is presented to illustrate the controller design method. 相似文献