控制

The strategies of high order sliding mode control and sliding mode control with integral action are proposed. Without losing the virtue of robustness and the ability of eliminating disturbance, these strategies can minimize the chattering phenomenon which is quite common in conventional sliding mode control.

在研究中，提出了高阶滑模控制和带积分的滑模控制方法，这两种方法在保证了常规滑模控制的强鲁棒性和抗扰动能力的前提下，可以在很大程度上削弱抖振，对常规的滑模控制有较大的改进。

The study results showed that the static interferes between heat and electrical load can be eliminated because of the integral action of the PID governor of DEH control system, dynamic interferes between heat and electrical load are decreased.

结果表明，由于DEH控制系统中PID调节器积分控制作用的存在，能够消除热电荷之间的相互静态干扰。新汽压力扰动时，调节级压力控制回路具有较好的瞬态响应特性；而负荷扰动时，功率控制回路具有较好的动态响应特性。

A new infinite gas-lubiicated journal bearing with active controlled restrictor is proposed in order to remedy the defects of several existing infinite stiffness at abroad in construction, manufacture and adjusting, which combining surface-restriction with active controlled restriction, make the static and dynamic effect both better.

针对目前国外几种无穷静刚度气体润滑轴承结构复杂、制造难度大、调整困难的不足，本文提出了一种主动控制节流无穷静刚度气体润滑轴承，将表面节流与主动控制节流相结合，使轴承动、静压效果同时获得较好的发挥；利用浅腔及锯齿形多槽结构产生较强的楔形动压效应，提高轴承的静态和动态性能；利用主动控制节流器对轴承进行压力反馈主动控制，提高轴承的承载力、刚度，并在一定载荷范围内，使轴承刚度为无穷大。

The development process of urban traffic signal control systems is simply reviewed, and the actuals and evolvement of traffic systems such as SCOOT, SCATS, UTOPIA, RHODES, OPAC and PRODYN are introduced. The above systems′ characteristics and shortages are analyzed. This paper points out that the keys for improving the performances of urban traffic signal control system are high quality detection data of traffic volume and traffic models.The development of urban traff...

简单回顾城市交通信号控制系统的发展过程；重点介绍SCOOT、SCATS、UTOPIA、RHODES、OPAC和PRODYN系统的现状和进展，分析其特点和不足；通过分析指出：提高城市交通控制系统性能的关键是高质量的交通量检测数据和交通模型，显然，把先进的智能控制技术、信息融合和处理技术与交通管理技术结合起来，才是城市交通信号控制系统发展的方向。

In order to prove the reliability, test studies have been primarily carried out in the indoor soil bin. The data of the vehicle driving state parameters under the same or different terrain are analyzed. The process curves are compared by different control schemes. The theoretical model of the optimum driving state is reliable and fuzzy control scheme is feasible. The disturbances and unknown factors of control system are analyzed. Test results prove that the half-tracked air-cushion vehicle can drive steadily under control of the computer. At the same time the sensors used to measure soil mechanics characteristics on line need to be developed. And it is the important problem to be solved in the future study. The necessary regulation and correction are put up. So the studies in this paper provide some instruction for the further research work.

为了验证本文提出的最佳工作状态及最佳垫压理论，并分析控制系统的可靠性和稳定性，本文在半履带式气垫车的模型车上，在室内土槽中进行了初步的实车性能和理论验证试验，考察了在同种和不同土壤条件下气垫车的行驶状态参数的测量数据，比较了采用不同控制方法下的过程曲线，验证了最佳工作状态的理论模型和模糊控制系统方案的可行性与可靠性，从而保证了采用自整定模糊PID控制器能够使半履带式气垫车在稳定行驶最佳工作状态下；同时通过试验研究，分析了系统中各干扰与未知因素，对控制方案进行了相应的调整和修正，为今后进一步的研究工作提供了一定的指导。

The composition of the system,injection and ignition signal generation and measurement of control map characteristics,as well as the control algorism of gasoline injection quantity and ignition advance angle were discussed in detail.

重点论述了该控制系统的构成、点火及喷油控制信号的生成方法，控制脉谱的制取过程以及喷油量、点火提前角的控制策略。

The control of the construction time is one of the important controls of tunnel. Once the construction time went amuck, the others should be influenced. So the study of the construction time is very important to us.

而在隧道工程中，进度控制是三大控制(资金、进度和质量的控制)中重要控制的目标之一，工程进度失控，必然会人力、物力的浪费，甚至可能会影响到工程的质量和安全，因此，对于隧道工程的工期研究也具有重大意义。

Single loop instantaneous voltage feedback control and multiple loop feedback control, which can be realized by digital method or analogue method, are normal control strategies of inverter. The controller's performance of a same control strategy designed by different designers is different This paper makes out uniform analysis and design theory of inverter control strategies with pole-assignment technique of state-space theory for the first time. It is firstly proposed that controller parameters being equal to control system orders is the base of realizing high performance inverter. Design and performance comparability of various controllers is presented with uniform pole-assignment method.

本文首次采用状态空间理论的极点配置技术，对逆变电源的几种控制策略进行了统一的分析和设计，首次提出控制器控制参数与控制系统阶数相等是高性能逆变器控制实现的基础，并通过极点配置这种统一的设计方法对各种控制器进行了设计和性能比较，分析了要考虑的一些非理想因素的影响。

The research on speed ratio control based on sliding model variable structure controller of angular displacement is done.

对电机控制式无级变速单元完成了基于角位移变结构控制的速比控制方式来实现变速器速比精确控制的研究。

This thesis presents the design and implementation of a universal ac motor control IC using complex programmable logic device. The proposed control IC is constructed under rotor flux oriented control, and may be used for vector control of both permanent magnet and induction ac motors. There are

本论文以复杂型可规划逻辑晶片(complex programmable logic device， CPLD)实现可应用於交流同步马达与感应马达伺服控制的泛用型控制IC，此控制IC采用转子磁场导向向量控制架构，包含电流回路控制器、解耦控制器与伺服控制器，为一功能完整的交流马达控制IC。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。