查询词典 emission control

Aimming at the fuel control requirement of micro-turbojet,the automobile's electric fuel pump with adaptable improvement is chosen as fuel-feed system.The performance of fuel pump and the technical difficulty of flux control as the speed of pump doesn't be measured are analyzed.Using Philips 83C552 MCU as the main control chip,the system adopts voltage negative feedback combined current compensation instead of rotation speed negative feedback and a PWM convertor to design the flux closed loop control system.

针对微型涡喷发动机的燃油控制要求，选用汽车用电动油泵进行适应性改进作为供油执行装置，详细分析了电动油泵的特性及泵转速无法测量情况下流量控制的技术难点，并以83C552单片机为核心，采用电压负反馈加电流补偿代替转速负反馈、电机通过PWM驱动的方法设计电动油泵流量闭环控制系统。

The information of train operation state and train control is transferred between RBC system and Centralized Traffic Control system; the information of train operation state and route state is transferred between RBC system and Computer Interlocking System; the information of train operation state, movement authorities and train interval control is transferred between RBC system and Train On-board system; the handover of train control is realized between RBC system and neighborhood RBC system.

其通过与调度集中系统交互，实现列车运行状态信息及控制信息的传递；与车站联锁系统交互，实现列车运行状态信息及进路状态信息的传递；与列车车载系统交互，实现列车运行状态信息、行车许可及列车运行间隔管理信息的传递；与相邻RBC系统交互，实现列车控制权的交接。

On the basis of the study on the mathematical model of the closed-loop location control, the analysis of contour error in the process motion control and error calculation model, according to the lack of using normal contour error model not to calculate contour error of curve in real-time, combining real-time contour error compensation control strategy and fuzzy logic theory, the fuzzy logic and real-time contour error calculation based self-discipline control strategy is proposed.

2在研究闭环位置控制数学模型、加工轮廓运动控制中的误差分析和轮廓误差计算模型的基础上，针对利用一般运动轮廓误差计算模型不能实时计算出曲线轮廓误差的不足，结合实时轮廓误差补偿控制策略和模糊逻辑理论，研究了基于模糊逻辑理论和实时误差计算的轮廓自律控制策略。

Control variable, control object and control algorithm are presented for gain control.

给出了增益控制的控制量、可控对象、控制算法。

Based on analysing the respective characteristics of regular PID controller in trational control theory and fuzzy logical controller in intelligent control theory, the idea and technique of expert system is introduced to develop a novel kind of hybrid intelligent controller. It can coordinate two kinds of control algorithms and tune the control parameters on-line for different working zones of the controlled process.(3) The hybrid knowledge expression model, which combines discrete state space model, fuzzy relational model and rule base model, is proposed based on analysing the characteristics of all kinds of knowledge expression models. The knowledge of the controlled process in different aspects can be expressed resonably by it. Based on the model mentioned above, the related optimization strategy for complex system is developed.

本文的主要贡献体现在：（1）以炼油厂的催化裂化装置和钢铁联合企业的大型焦炉装置两个典型的复杂工业过程为例，分析了工业大系统的许多不易控制的特性，并归纳了其中的几个典型特征；（2）针对经典控制理论中的常规PID调节器和智能控制技术中的模糊逻辑控制器各自的特点，通过引入专家系统的思想和方法，开发了一类混合式专家控制器，它同时具备在线协调两种不同控制规律和自动学习控制规则的能力；（3）通过分析各种知识表达模型的特点，提出了一类包括离散状态空间模型、模糊关系模型和规则基模型在内的混合知识表达模型，它能对过程知识在各个不同侧面给予合理的描述。

Simulation results show that the performance of the open-loop control system is poor when the model parameters change. The second system is designed via feedback linearization method. Since the path signal is introduced as feedback signal, the designed closed-loop control system improves the system robustness to the parameter perturbation. Simulation results verify that the closed-loop control system shows better performance than the time optimal control system.

前者侧重于时间最短的控制性能，但由于是开环控制，当出现参数摄动时，系统的性能会受到较大影响；后者由于引入了飞艇轨迹的反馈信号，因而相对提高了系统对参数摄动的鲁棒性，计算量较小，并且仿真结果证实了这种闭环系统设计方案可以抑制参数摄动带来的影响，与时间最优开环控制系统相比，显著提高了控制精度、改善了控制效果。

By comparing the open-loop control system, closed-loop control system and mixed-loop control system, the paper drew a conclusion that the new control system could shorten the blind area, eliminate the dead area, and autolevel cotton sliver twice.

通过比较开环、闭环和混合环控制系统认为，该控制系统能够缩短盲区，消除死区，并能2次匀整条干。

By applying the principle of optimality and multiple objective decision-making , and based on the control effect and the control cost of Spodoptera litura, decrease rate of spider and the retrieved yield, 11 pesticide control measures were comprehensively analyzed to find the optimal control measure with highest benefit.

根据不同药剂对斜纹夜蛾的防治效果、防治工本费、对天敌的影响、防治后挽回的产量损失等资料，以净收益最大作为最优防治目标，运用优化理论和多目标决策方法，对 11种药剂防治措施进行了综合分析。

According to engine control parameter MAP attained through off-line type, control system realizes optimum control of A/F ratio and ignition advance angle. The system is called as static predetermined optimum control type.

控制系统采用静态预定最优控制方式即依据预先对发动机控制参数进行离线优化而得的脉谱，实现对空燃比和点火提前角的控制。

The journal publishes reviews covers the whole field of the biology and biochemistry of cancer, emphasizing oncogenes and tumor suppressor genes, growth-related cell cycle control signalling, carcinogenesis mechanisms, cell transformation, immunologic control mechanisms, genetics of human cancer, control of cell proliferation, genetic and molecular control of organismic development, rational anti-tumor drug design.

该杂志主要发表有关肿瘤生物学和生物化学的综述。其内容包括：致癌基因和肿瘤抑制基因，与生长有关的细胞周期控制的信号转导，致癌机理，细胞转化，免疫控制机理，人类癌症遗传学，细胞增殖的控制，组织发育的遗传和分子控制，合理的抗肿瘤药物设计等。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。