某型航空涡轴发动机燃油调节器建模与仿真

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.     

混合式智能调节器

本文通过分析模糊调节器和常规PID调节器各自的特点,提出了使用专家系统技术来协调模糊调节器和常规PID调节器的方法,设计了一种新型的混合式智能调节器.通过仿真试验表明这种调节器对一些复杂难控对象的控制是有效的。     

基于模糊自适应算法的原动机参数整定

在原动仿真系统中,关于其速度电流综合调节器(实质为PI调节器)的参数一直以来都是依靠传统方法来确定的,这种方法不但耗费时间,而且很难寻求到一组理想的参数。将模糊自适应算法引入可很好解决这些问题,通过具体事例运用MATLAB仿真试验,对传统方法和模糊自适应算法所得到的调节器阶跃响应进行比较,试验结果证明,模糊自适应算法能够快速优化确定PI参数,且原动系统的动态特性更好。     

基于灰色系统理论的综合调节器快速诊断研究

针对调节器的故障模式进行了详细的分析.利用灰色关联分析的方法,对造成调节器故障的故障模式进行了排序,为故障的快速诊断提供了理论依据,从而节省了排故时间,提高维修效率.     

连续控制系统中调节器的快速自动设计

本文运用实际系统向二阶模型逼近的方法,导出了求解调节器参数的矩阵方程,并编制了 相应的计算机辅助设计的程序.利用此程序,只要输入所期望的指标和系统固有的参数,就可 自动快速地完成调节器的设计和仿真检验.     

一种电解采矿电源的双路快速PID调节器设计

介绍了一种数字调节器 ,该调节器采用 MCS96单片机为 CPU的 STD总线工控机作为主控单元 ,具有双通道 PID调节功能 ,两套调节器可在线相互热备。实际应用证明该调节器性能可靠 ,操作简便 ,调节快速     

气压防抱死制动系统调节器动态特性试验研究

为提高商用汽车气压防抱死制动系统(ABS)的安全性和可靠性,对气压ABS调节器的特性,特别是动态特性进行了试验研究.建立了气压制动ABS调节器制动气室在充放气状态下的动态微分方程,并通过仿真,分析了其气室压力变化的动静态特性;同时,介绍了气压ABS调节器的性能评价方法,提出了一种动静态性能参数试验测试方法,完成了气压A...     

自适应控制技术在煤系针状焦制备试验中的应用

本文论述了自校正调节器在煤系针状焦制备试验中的应用。首先为了满足工艺试验的需要和特点,对采用自校正调节器,比例、积分、微分调节器的两种控制方法进行了计算机仿真比较试验。根据仿真结果分析及工艺过程参数慢变化的特点,采用了自适应控制技术——自校正调节器。在试验前进行了多次的调试确定了 β_0,λ,T 等参数,同时在相同的工艺试验条件下对两种控制方法做了工艺对比试验。产品质量指标分析的结果表明,采用自校正调节器的方法提高了针状焦产品质量,为煤系针状焦扩大工艺生产提供了可靠的控制方法。     

基于DSP余弦移相的励磁调节系统设计

介绍了基于DSP数字余弦移相单元的同步发电机可控硅微机励磁调节器的设计原理和实现过程。利用DSP芯片可快速执行傅氏算法的优点,应用DSP芯片、单相整流电路、测频电路和脉冲输出电路组成了DSP数字余弦移相单元,并提出硬件、软件设计方案和触发角的反余弦拟合算法,从而快速、精确地拟合、确定可控硅的移相触发角,进而有效控制发电机励磁直流电压,实现发电机端电压输出的稳定。现场试验表明,调节器输出脉冲一致性好、快速平稳、扰动小,该装置对励磁系统控制性能有显著提高。     

燃油压力调节器自动设压控制系统设计

为了对汽车燃油压力调节器的压力进行准确、快速的设定,设计开发了一套对燃油压力调节器的自动设压控制系统。选用LabVIEW开发平台,并结合NI cRIO-9073控制器和西门子S7-300系列PLC完成了整套系统的数据采集和实时控制。通过试验验证,系统能够在功能、精度、节拍等方面达到预期的要求,目前已经投入到实际产品的生产中。     

Task scheduling and motion planning for an industrial manipulator

In many robotic industrial applications, a manipulator should move among obstacles and reach a set of task-points in order to perform a pre-defined task. It is quite important as well as very complicated to determine the time-optimum sequence of the task-points visited by the end-effector's tip only once assuring that the manipulator's motion through the successive task-points is collision-free.     

Mission design for a group of autonomous guided vehicles

In this paper, a generic approach for the integration of vehicle routing and scheduling and motion planning for a group of autonomous guided vehicles (AGVs) is proposed. The AGVs are requested to serve all the work stations in a two-dimensional environment while taking into account kinematics constraints and the environment’s geometry during their motion. The problem objective is the simultaneous determination of time-optimum and collision-free paths for all AGVs. The proposed method is investigated and discussed through a number of simulated experiments using a variety of environments and different initial conditions.     

Movement Planning in the Presence of Flows

This paper investigates the problem of time-optimum movement planning in two and three dimensions for a point robot which has bounded control velocity through a set of n polygonal regions of given translational flow velocities. This intriguing geometric problem has immediate applications to macro-scale motion planning for ships, submarines, and airplanes in the presence of significant flows of water or air. Also, it is a central motion planning problem for many of the meso-scale and micro-scale robots that have been constructed recently, that have environments with significant flows that affect their movement. In spite of these applications, there is very little literature on this problem, and prior work provided neither an upper bound on its computational complexity nor even a decision algorithm. It can easily be seen that an optimum path for the 2D version of this problem can consist of at least an exponential number of distinct segments through flow regions. We provide the first known computational complexity hardness result for the 3D version of this problem; we show the problem is PSPACE hard. We give the first known decision algorithm for the 2D flow path problem, but this decision algorithm has very high computational complexity. We also give the first known efficient approximation algorithms with bounded error.     

Robotic polishing systems

This article presents a graphical task-level robot-programming tool for polishing parts held by the robot gripper. The proposed approach allows a user-friendly manner to specify the polishing curves over a CAD model of the part. The user also specifies the width of the abrasive polishing bands to be used and the pressure exerted. The GUI aids the user in verifying that the whole surface is to be correctly polished. Once the task specification is done, a task-planning module provides the algorithms to guarantee the time-optimum sequence of robot trajectories to perform the polishing of the curves over the part, avoiding collisions with the obstacles of the cell. The programming tool has been in actual polishing tasks at the industrial company Polits Catalunya using a Staubli RX-90 robot. The proposed approach can be easily extended to other similar tasks like cutting or material dispensing.     

一种改进的Fuzzy-PID温度控制器设计及其在供热网控制系统中的应用

本文针对供热网控制系统的大时滞和非线性等特点,在以往Fuzzy-PID温度控制器的基础上,介绍了一种改进的设计方法。通过对现有模糊控制器的输入量的改进,提高了控制器的动态响应性能;同时利用组合遗传算法来优化PID的三个参数Kp,Ki,Kd,提高了控制器的控制精度;最后,通过一个供热网的温度控制系统的仿真实验验证了这种改进的Fuzzy-PID温度控制器有着较强的动态响应性能和良好的控制精度。     

基于模糊PI的永磁同步电机矢量控制

针对永磁同步电机矢量控制系统中,传统PID控制器对永磁同步电机控制性能效率不高以及对工作环境变化的适应性能不良等问题,首先,在两相旋转坐标系下采取双轴理论建立永磁同步电机数学模型;接着,采用模糊控制理论对永磁同步电机矢量控制系统中转速环传统的普通PID控制器进行改进研究,深入地从理论层次研究分析建立得到模糊PI控制器....     

模糊神经网络pH控制器的DSP实现

针对pH值控制过程具有较强非线性、纯滞后性的特点，传统PID控制往往达不到满意控制效果。介绍一种将模糊控制技术与神经网络技术相结合构成的模糊神经网络pH控制器，通过数字仿真显示了该控制算法的控制效果优于传统的PID控制和一般的模糊控制算法。并将提出的模糊神经网络控制算法在DSP上进行了实现．通过模拟实验验证了该控制器的可行性。     

退火炉温度模糊PI控制器的设计与仿真

在退火炉控制系统中,常规的PID控制器及传统的模糊控制器难以达到理想的温度控制效果,针对常规PID控制器或者模糊控制器在控制具有非线性、纯滞后、时变特点的退火炉温度时存在的缺点,文中提出一种结合模糊控制器和PI控制器优点的模糊-Pl退火炉温度控制策略。文中对该模糊-PI控制器进行详细的设计,并用Matlab／Simulink软件对算法进行建模仿真,结果表明该控制器动态响应快、超调小、稳态精度高、鲁棒性好。模糊-PI控制器具有良好的控制性能,非常适合参数时变的大滞后退火炉控制系统。     

A Robust Speed Controller With VSS Tuning Of Disturbance Cancellation For An Induction Motor Drive

A robust speed controller for an induction motor drive that achieves quantitative control and considers the effects of nonlinearities is presented in this paper. First, a two-degree-of-freedom controller (2DOFC) is designed according to the estimated model for the nominal case and given speed specifications. Then, the control characteristics and limitations of the conventional robust controller are investigated. Accordingly, a modified robust speed controller based on disturbance cancellation is developed, wherein tuning of disturbance cancellation is performed via a variable structure system (VSS) controller. The estimated model mismatched error and its derivative are used as the driven inputs of the VSS controller. Greater robustness and flexibility in achieving a compromise between control effort and control performance can be achieved using the proposed controller. The effectiveness of the proposed controller is demonstrated by simulation and measured results.     

一类基于Smith预估器的神经元控制器的实现研究

本文提出一种基于Smith预估器的神经元控制器的实现方法,该神经元控制器的控制算法是不完全微分先行PID控制.利用MATLAB仿真软件对该控制器在电加热炉中的应用进行仿真研究.仿真结果表明,该控制器具有Smith预估控制和神经元控制的优点.