控制理论

In the study of open-loop optimal control problems, a useful tool is the so-called "Pontryagin"s Maximum Principle which gives a set of necessary conditions to optimal open-loop controls.

对于开环控制的研究，在最优控制理论中已经有了Pontryagin最大值原理这个有效的工具，它提供了最优开环控制的一个必要条件。

It is known that the simultaneous estimation of speed and rotor resistance is very difficult, and it is impossible to estimate them simultaneously under the steady state based on indirect vector control.

以稳定性讨论为依据，应用自适应控制理论，融入模糊逻辑和人工神经网络的方法，提出了一种无速度传感器控制的方案，解决了影响转子磁场定向无速度传感器控制低速性能的两对难题：同时估计定子电阻与输出电压、同时估计转速与转子电阻。

On this foundation, application changes control of structural slippery model designed dimensional machine theoretically inertial space contrail coordinates brachial carrier attitude and extreme ungual hand of motion change; of program of control of structural slippery model to overcome afore-mentioned changing controller of structural slippery model trembles brace up defect, add designed an ambiguous controller, with coming to dynamic adjustment to change according to control output of the system the structure slips the coefficient that the fast approach such as modular controller leads, achieve thereby make sure the system is had already answer quickly can eliminate original controller to have again tremble brace up the purpose of defect.

在此基础上，应用变结构滑模控制理论设计了空间机械臂载体姿态和末端爪手惯性空间轨迹协调运动的变结构滑模控制方案；为了克服上述变结构滑模控制器抖振的缺点，附加设计了一个模糊控制器，以根据系统的控制输出来动态调节变结构滑模控制器等速趋近率的系数，从而达到既保证系统具有快速响应又能消除原有控制器具有抖振缺点的目的。

A flexible factor was introduced to the fuzzy control model, which can selfadapt and adjust the universe of discourse in the fuzzy control and the workpiece peripheral speed vw was selected as control variable.

采用论域自调整策略和模糊控制理论建立了纵向磨削的控制模型，选择工件的转速vw作为控制变量。

It can flexibly deal with the problems of universe of discourse and quantization of different variables; thus overcome the shortcoming of simple fuzzy control that it can not meet both the requirement of dynamic and static performance.

将分层模糊控制理论引入渠系自动控制，针对渠道运行控制特点，设计分层模糊控制器，它能灵活处理控制器输入、输出变量的论域及其量化问题，从而克服简单模糊控制器不能同时兼顾系统动静态性能的缺点。

Based on the basic control theory of permanent magnet synchronous motor,the function of zero voltage vector in the control is analyzed.

摘 要：介绍了永磁同步电动机直接转矩控制基本控制理论，分析了零电压矢量在控制过程中的作用。

Secondly, the vector control theory,the kinematics model and the sinusoidal space vector Pulse-Width-Modulation control technology were analyzed dividually, and then the mathematic simulation model of the servo system of PMSLM was built.

其次，综合运用电机控制理论和计算机仿真技术，分别对永磁同步直线电机的矢量控制原理、运动力学模型以及电压空间矢量脉宽调制技术进行分析，搭建了永磁同步直线电机伺服控制系统的数学模型。

After analyzing different power steering systems, the control strategies for assist muter in an electric power steering system are emphatically discussed based on traditional control theory, including the designs of current closed-loop PI controller and current set-point algorithm.

在分析现有的各种助力控制策略的基础上，着重讨论了基于传统控制理论设计的电机控制策略与系统性能的关系，其中包括电流闭环PI控制器的参数设计及电流给定算法设计。

In view of the influence of perturbance, a discrete LQR optimal controller with constraint control vector to keep the chaser in the scheduled orbit was designed.

考虑到实际绕飞中受到各种摄动的影响，结合最优控制理论设计了控制向量受限的离散LQR最优控制器，将追踪器控制在预定的绕飞轨迹中。

The method to achieve zerowaste control is discussed, and the basic model is presented that can implement virtual negative waste in the case of giving a precompensation.

论述了零废品控制的基本方案，并给出在赋予一定超前控制量情况下实现虚拟负废品控制理论的基本模型。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。