基于改进遗传算法的环形倒立摆PID参数整定

针对传统的环形倒立摆PID控制器参数整定方法主观性强,系统响应性能不佳等问题,提出来了一种基于改进遗传算法的环形倒立摆PID参数整定方法.采用仿真研究方法,比较了试凑法、遗传算法和改进遗传算法求取的PID控制器参数对环形倒立摆的控制效果.实验表明,相比于试凑法,遗传算法得到的PID控制器参数使系统的超调量减小、调节时间缩短;改进的遗传算法得到的PID控制器参数使系统的响应性能进一步优化.改进遗传算法求取PID控制器参数的方法对于环形倒立摆以外的控制系统也有借鉴作用.     

一种改进遗传算法在抽油机节能器中的应用

提高油田抽油机的电能利用率一直是人们关心的一个热点。传统的方法是采用双模控制技术（bang—bang和PID控制相结合），但由于模型的不确定性等因素，难以获得满意的控制效果。为此该文设计了一种基于改进遗传算法的PID模糊控制器，通过检测抽油机的电压与电流之间的相位差，实时构建不同工况条件下的系统模型，采用改进遗传算法与模糊控制相结合的技术，优化PID整定参数。仿真和实验表明，控制器具有很好的控制效果。     

基于改进遗传算法的非线性PID控制器

基于PID控制器各增益参数与偏差信号之间呈现非线性关系,该文提出了一种非线性PID控制器.同时,针对经典遗传算法收敛速度慢、易于早熟、局部寻优能力差等缺点,在前人研究成果的基础上,改进了传统的遗传算法,并将其应用于非线性PID控制器参数寻优.仿真结果表明,基于此遗传算法寻优设计的非线性PID控制器可以极大地提高寻优的速度,同时兼顾系统的动态和静态性能.     

基于改进混合遗传算法的二自由度PID控制器设计与应用

针对一般遗传算法存在的不足,提出一种改进的混合遗传算法,并将其应用于二自由度PID控制器参数寻优设计,仿真试验表明,所设计的二自由度PID控制器具有优良的鲁棒特性和抑制外界于扰特性,在仿真转台控制系统设计中获得了良好的控制效果,从而说明了该方法的有效性。     

基于SMEC的PID控制器参数优化整定方法

PID控制器参数的优化整定一直是自动控制领域的研究热点。提出一种利用改进思维进化计算（MEC）优化PID控制器参数的方法，在原有算法的框架上，加入自调整操作，依据进化方向和进化时间自动调整两种散布因子。经仿真表明使用SMEC方法整定得到的PID控制器参数可以获得满意的控制效果，其性能优于利用遗传算法得到的效果。     

基于双种群遗传算法的四旋翼飞行器PID参数整定方法

针对四旋翼飞行器的PID控制器参数整定问题,提出使用双种群遗传算法对控制器参数进行寻优;四旋翼飞行器的PID参数调整困难,由于通道间的耦合关系使常规的参数调整方法失效,提出结合双种群遗传算法,寻找最优的PID参数组合,实现飞行器控制;结合动力学模型并加以适当简化,设计了PID控制器,使用双种群遗传算法整定参数,进行了数据仿真实验;结果表明,双种群遗传算法能够提高单种群遗传算法5%的性能,获得的参数控制效果更好。     

改进遗传算法优化控制器参数的燃烧控制

主汽压和床温是循环流化床锅炉(CFBB)燃烧控制系统中两个重要的控制指标,直接影响着锅炉运行的安全性和经济性。常规PID控制大多采用人工凑试法来调整PID控制器参数,结果往往耗时且难以实现燃烧系统的实时控制。为了实现燃烧系统的实时控制,提出了一种改进遗传算法优化PID控制器参数的控制方案。在控制过程中,先利用前馈补偿解耦法对主汽压和床温进行解耦,再采用改进遗传PID控制器对两个对象进行独立控制。仿真结果分析表明,与常规PID控制相比,改进遗传算法优化PID控制器参数的控制方案可以有效地改善循环流化床锅炉燃烧系统的动态性能、稳定性能以及快速性能,并提高系统的控制品质。     

基于非线性PID的调距桨控制系统仿真研究

船舶调距桨控制系统中采用一般PID控制器往往难以达到最佳控制效果。针对调距桨控制系统过程模型的特点，设计了相应的非线性PID控制器，该非线性PID控制器各增益参数与偏差信号之间呈现非线性关系，调节控制器的各参数可根据对相应参数的非线性函数进行调整来实现，并采用遗传算法来优化此控制器各部分参数。仿真结果表明，该控制器能根据实际情况快速地调整和完善PID参数，具有响应速度快，稳态精度高等优点，控制效果优于传统的PID控制器。     

基于改进遗传算法寻优的神经网络PID控制及应用

根据神经网络PID控制器初值的选取影响系统控制性能的特点,提出了一种基于改进遗传算法寻优的神经网络PID控制方法.即先利用遗传算法对PID控制器参数离线寻优,将求出的参数值作为控制器的比例、积分、微分系数的初值,再进行神经网络PID控制.对一类液位过程的实时控制结果表明采用本方法的控制系统具有较好的稳定性和鲁棒性.     

优化GA的模糊自适应张力控制

以典型的卷绕张力系统为研究对象,结合模糊自适应PID控制与遗传算法,设计了基于遗传算法的模糊自适应PID张力控制器.该控制器由离线和在线两部分组成,离线部分利用遗传算法搜索出一组最优的PID参数作为在线调节的初始值,在线部分用来实时调整系统响应的PID参数.仿真结果表明,采用的模糊自适应PID控制策略较传统PID控制器具有响应速度快、控制输出稳定、抗干扰能力强、鲁棒性好等优点.     

采用遗传优化自适应模糊PID控制球杆系统

为解决球杆系统动态、静态性能不高的问题,提出了遗传算法优化自适应模糊PID控制器的控制方法.该模型在拉格朗日方程建立球杆系统数学模型的基础上,采用遗传算法优化模糊控制规则、隶属函数和自适应PID参数.在GBB1004系统中建立了遗传算法优化后的自适应模糊PID控制器以及控制模型,并对该控制器进行实验验证.实验结果证明了遗传算法优化后的模糊控制器有效地减小了系统的超调量,缩短了系统的调节时间,能够较好地控制球杆系统.     

Sugeno fuzzy PID tuning,by genetic-neutral for AVR in electrical power generation

We report a novel design method for determining the optimal proportional-integral-derivative (PID) controller parameters of an automatic voltage regulator (AVR) system, using a combined genetic algorithm (GA), radial basis function neural network (RBF-NN) and Sugeno fuzzy logic approaches. GA and a RBF-NN with a Sugeno fuzzy logic are proposed to design a PID controller for an AVR system (GNFPID). The problem for obtaining the optimal AVR and PID controller parameters is formulated as an optimization problem and RBF-NN tuned by GA is applied to solve the optimization problem. Whereas, optimal PID gains obtained by the proposed RBF tuning by genetic algorithm for various operating conditions are used to develop the rule base of the Sugeno fuzzy system and design fuzzy PID controller of the AVR system to improve the system's response (∼0.005 s). The proposed approach has superior features, including easy implementation, stable convergence characteristic, good computational efficiency and this algorithm effectively searches for a high-quality solution and improve the transient response of the AVR system (7E−06). Numerical simulation results demonstrate that this is faster and has much less computational cost as compared with the real-code genetic algorithm (RGA) and Sugeno fuzzy logic. The proposed method is indeed more efficient and robust in improving the step response of an AVR system.     

Design of PID controller with incomplete derivation based on ant system algorithm

A new and intelligent design method for PID controller with incomplete derivation is proposed based on the ant system algorithm (ASA). For a given control system with this kind of PlD controller, a group of optimal PID controller parameters Kp^*, Ti^*, and Td^* can be obtained by taking the overshoot, settling time, and steady-state error of the system‘s unit step response as the penfomunce indexes and by use of our improved ant system algorithm. Kp^*, Ti^*, and Td^* can be used in real-time control. This kind of controller is called the ASA-PID controller with incomplete derivation. To verify the performance of the ASA-PID controller, three different typical transfer functions were tested, and three existing typical tunmg methods of PID controller parameters,including the Ziegler-Nichols method (ZN), the genetic algnrithrn (GA), and the simulated annealing (SA), were adopted for comparison. The simulation results showed that the ASA-PID controller can be used to control different objects and has better performance compared with the ZN-PID and GA-PID controllers, and comparable performance compared with the SA-PID controller.     

基于DNA-GA-RBF的PID参数优化

PID控制器因为结构简单,容易实现,并且具有较强的鲁棒性,因而被广泛应用于各种工业过程控制中。控制器参数直接影响控制器的性能,因此控制器的设计主要体现在控制器参数的调整上。参数自整定技术的发展一方面减轻了控制工程师现场调试的工作量,节省了大量的时间,另一方面也使整定的结果更加理想。利用DNA遗传算法的全局搜索的功能特性,对整个RBF神经网络参数进行优化,将RBF网络不同的中心矢量和其对应的基宽向量及各个调节权重统一编码,使得整个网络模型达到全局最优。然后利用该混合算法对PID参数进行整定,仿真证明该算法能有效地实现PID参数最优整定,其性能优于常规的RBF算法,为解决PID控制器参数最优设计提供了一种有效的方法。     

Teaching–learning based optimization algorithm based fuzzy-PID controller for automatic generation control of multi-area power system

This paper deals with the design of a novel fuzzy proportional–integral–derivative (PID) controller for automatic generation control (AGC) of a two unequal area interconnected thermal system. For the first time teaching–learning based optimization (TLBO) algorithm is applied in this area to obtain the parameters of the proposed fuzzy-PID controller. The design problem is formulated as an optimization problem and TLBO is employed to optimize the parameters of the fuzzy-PID controller. The superiority of proposed approach is demonstrated by comparing the results with some of the recently published approaches such as Lozi map based chaotic optimization algorithm (LCOA), genetic algorithm (GA), pattern search (PS) and simulated algorithm (SA) based PID controller for the same system under study employing the same objective function. It is observed that TLBO optimized fuzzy-PID controller gives better dynamic performance in terms of settling time, overshoot and undershoot in frequency and tie-line power deviation as compared to LCOA, GA, PS and SA based PID controllers. Further, robustness of the system is studied by varying all the system parameters from −50% to +50% in step of 25%. Analysis also reveals that TLBO optimized fuzzy-PID controller gains are quite robust and need not be reset for wide variation in system parameters.     

基于改进GAAA算法的PID参数优化

针对PID参数优化问题，对蚁群算法进行改进，并与遗传算法相结合，提出了改进的GAAA算法；该算法先利用遗传算法获得初始信息，然后运行改进的蚁群算法，大大加快了蚁群算法的速度；对PID控制的参数优化与仿真结果表明，该优化方法无论在时间性能和优化性能上都取得了较好的效果。     

一种改进的遗传算法及其在PID控制中的应用

针对经典遗传算法收敛速度慢、易于早熟、局部寻优能力差等缺点，提出了一种改进的遗传算法，并将其应用于PID参数寻优。该算法既具有经典遗传算法的全局寻优能力，又具有局部寻优能力；同时，它又能有效地抑制早熟，保证得到的优化参数为最优。仿真结果表明，基于此遗传算法寻优设计的PID控制器可以极大地提高寻优的速度，鲁棒性强，具有很好的动态品质和稳定性。     

一种新型人工免疫算法的PID自整定研究*

提出了一种人工免疫诱导算法(AⅡA),用于实现PID参数自适应整定计算.阐述了人工免疫系统的原理,深入剖析了PID参数自适应整定模型,设计了该模型的人工免疫诱导算法.实验表明,该算法具有快速收敛性,能够较快地找到PID参数自适应整定的最优或次最优参数组合,有利于提高PID控制器调节的实时性.同时,将该算法(AⅡA)与GA算法、齐格勒-尼柯尔斯(Z-N)方法、ISTE方法进行了比较.仿真结果表明了该算法的优越性和实用性.     

A novel design of high-sensitive fuzzy PID controller

A hybrid model is designed by combining the genetic algorithm (GA), radial basis function neural network (RBF-NN) and Sugeno fuzzy logic to determine the optimal parameters of a proportional-integral-derivative (PID) controller. Our approach used the rule base of the Sugeno fuzzy system and fuzzy PID controller of the automatic voltage regulator (AVR) to improve the system sensitive response. The rule base is developed by proposing a feature extraction for genetic neural fuzzy PID controller through integrating the GA with radial basis function neural network. The GNFPID controller is found to possess excellent features of easy implementation, stable convergence characteristic, good computational efficiency and high-quality solution. Our simulation provides high sensitive response (∼0.005 s) of an AVR system compared to the real-code genetic algorithm (RGA), a linear-quadratic regulator (LQR) method and GA. We assert that GNFPID is highly efficient and robust in improving the sensitive response of an AVR system.