查询词典 time-base control

To satisfy the demand of real-time control in brushless direct current motor, this paper proposes a design of a digital control system which consists of digital signal processor and monitor and control generated system.

为满足高性能实时测控系统的要求，设计由数字信号处理器和通用监控系统MCGS组成的应用于无刷直流电机的数字控制系统。

This thesis discusses expert system and fuzzy control technology and its application control of aluminum electrolytic cell; And then explain the idea of design with realization of the system's software and hardware in detailed; at the same time, according to the of the manufacture characteristic of aluminum electrolytic, the thesis discusses the methods of anti-interference and security in control system.

然后，论文详细说明了硬件的设计方法及其软件实现，并且根据铝电解生产工业的特点给出了抗干扰和保护措施。

By rational designs of mechanical structure and plan, the system uses PLC as the core of control on site, and accomplishes control of the installment and debug of the system step by step by software configuring design of the touch panel. Industrial computer, the centre of monitor, control and management of the system, composes epigyny and hypogyny machines' real-time monitoring and controlling system with PLC by designing the communicative model and program, and accomplishes man-machine dialogue in form of suppositional panel by designing supervisory software. Meanwhile, we also adopt client/server model and realize long-distance supervision of impact sensitivity experiment by program designing.

系统通过合理的机械结构和方案设计，采用PLC作为现场控制核心，通过对触摸屏软件组态设计，完成了系统现场安装、调试时的单步控制功能；作为系统的监控、调度中心的工控微机通过通讯模式和程序设计，与PLC组成上、下位机实时监控系统，间接地实现了对撞击感度试验的监控，并通过上位机实时监控管理软件的设计，以虚拟面板的形式较好地实现了人机对话；采用客户机／服务器模式，通过软件编程实现了撞击感度试验的远程监控功能。

Ordinary students as the supplement control group were selected at random. 9g pyruvate calcium capsules were taken twice a day in supplement control and supplement and training group. At the same time, equipollent glucose capsules were compensated to training control group. The trail lasted for 21 days, during which athletes'training was normal.

根据体重将男子散手运动员均衡地分为两组：运动对照组(training control，简称tc组)和补充丙酮酸运动组(supplement control，简称sc组)，两组研究对象的运动等级及训练情况基本相同，每周训练20小时以上；将体院大学生作为补充丙酮酸对照组(supplement and training，简称st组)。sc组和st组每天分两次补充9克丙酮酸钙；tc组补充等量葡萄糖，实验持续21天。

Applied in cigarette control system of automation logistics system, industrial equipment field bus control technology has become the most effective tool to solve the question that traditional cigarette production exist raw material prepare time to be long and weak adaptability to market. And its open structure system has created the condition to extend for the system expansion. That applying PROFIBUS bus technology in the control system of cigarette automation logistics system, and solving the existed latent problem, is one of research results for the paper.

将工业设备现场总线控制技术应用于卷烟自动化物流系统的控制系统之中，成为解决传统卷烟生产存在的原材料准备时间较长，适应市场能力弱的最有效的工具，而其开放性的结构体系，又为系统的扩展和延伸创造了条件，将PROFIBUS总线技术应用于卷烟自动化物流系统的控制系统之中，并解决存在的潜在问题，是本文的研究成果之一。

An optimal control law is obtained by minimizing the average performance through spectral factorization and a practical control method for integrator and dead time plant is presented in the presence of plant uncertainty and control energy constraint.

首先基于一类随机模型误差的描述，定义了一个平均意义上的包含跟踪误差和控制能量在内的性能指标；然后通过谱分解极小化该性能指标，导出一个最优的控制律，从而为模型不确定性和控制能量约束并存条件下一类非自衡对象的最优控制问题提供了一种实用的控制方法。

College of Guandong Business, Guanzhou 510320, China）Abstract: Since large-scale vertical quench furnace is voluminous, whose working condition is a typically complex process with distributed parameter, nonlinear, multi-inputs/multi-outputs, close coupled variables, etc, dynamically decoupling control algorithm of temperature distributed parameter system in the furnace was presented, by which the whole system was decoupled to several subsystems and the implementation of controller was simplified. With finite difference approximation, the space and time step size was solved to ensure the convergency of finite difference approximation. After decoupling, the subsystems were controlled with self-learning PID control algorithm. The results show that the temperature control precision and homogeneity are improved; the overshoot and process in temperature rising period are reduced simultaneity.

摘 要：针对大型立式淬火炉体积庞大，工况复杂，炉内温度分布呈本征非均匀性，具有多输入/多输出、非线性、强耦合等特性，难以实现炉内温度高精度高均匀性控制目标等问题，提出一种温度分布参数系统动态解耦控制算法，其原理是：采用有限维逼近方法将对象解耦为多个独立的子系统，简化控制器的实现过程；通过分析有限维逼近方法的收敛性，获得保证收敛性的空间和时间步长应满足的条件；解耦后的子系统采用自学习PID控制算法，实现炉内温度高精度和高均匀性控制以及升温过程的快速性和小超调。

The method combing harmonic linearization and integral time absolute error optimal control to realize the PWM converters' optimal control is proposed according to the hysteresis current control's characteristics.

根据滞环电流控制的特点，提出了将谐波线性化方法与ITAE优化控制律相结合的方法，以实现对PWM变换器的优化控制。

With the merits of space vector modulation: digitized control,harmonic decrease,high ratio of voltage used,fast dynamic response and so on,and at the same time deadbeat and DSP control is introduced, as well as two-loop control of the system,we gained power factor is near unit and current THD is well below 10% in our digitized arc welding power system.

基于空间矢量脉冲宽度调制技术的易于数字化、可降低谐波、电压利用率高、动态响应快等特点，引入无差拍思想、总体系统的双环控制思想和DSP控制，实现了功率因数为1，电流谐波畸变远小于10％弧焊电源系统的数字化。

In Chapter 4 we discuss the solvable theorem of adaptive inverse optimal control problems, and proceed with controller designs of global asymptotic stability in probability, adaptive inverse optimal stabilization in probability and output-feedback adaptive inverse optimal stabilization in probability for strict-feedback stochastic nonlinear continuous systems with additive standard Wiener noises and constant unknown parameters using It〓's differentiation rule and an adaptive backstepping algorithm. Control laws and adaptive laws can be obtained at one time by this design scheme. Many simulations have been performed to validate the properties of the proposed adaptive control scheme.

在第4章中，针对具有标准Wiener噪声扰动和未知定常参数的不确定随机非线性系统，提出并证明了自适应逆最优控制问题可解定理，构造了适当形式的四次型随机控制Lvapunov函数，基于It〓微分规则和自适应Backstepping算法，系统地设计了全局依概率渐近稳定控制器、自适应逆最优控制器、输出反馈逆最优控制器以及在设计中如何处理二阶Hessian矩阵函数的方法，这种方法可同时获得控制律和自适应律，通过实例仿真，表明该控制算法是有效性的。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。