过程控制

ABSTRACT In order to effectively dominate the weld formation during pulse tungsten inert gas welding of aluminum alloy in automatic p...

在铝合金脉冲TIG焊的自动化焊接过程中，保证焊缝稳定成形的有效措施是在获取焊接过程实时信息的基础上实现闭环控制。

Basing on analyzing the work principle of the current control methods, it can be given the detailed derivation process basing on the grid and inverter pulse width modulation algorithm and the duty cycle of the instantaneous current control.

在分析了电流控制方法工作原理的基础上，给出了基于瞬时电流控制的并网逆变器的脉宽调制算法和占空比的详细推导过程。

The process of voltage establish of instantaneous torque control induction generation system is investigated.

深入研究了瞬时转矩控制的异步发电系统的建压过程，分析了建压过程的影响因素。

The human heart is the center of the cardiovascular system. Integrated with mechanical, electrical, neural and biochemical properties, the heart is difficult to model, and there is no ideal integral model now. The developed electrical models haven't considered the mechanical properties and blood flow process in the heart; while the mechanical ones have normally deal with the heart in the diastole period, and the electrical activity was simplified too much although some mechanical models have investigated the heart during systole.

心脏是循环系统的核心，它集机、电、神经和生化控制于一体，建模难度很大，目前尚无较理想的统一模型；心脏电生理模型未与心脏的机械动力过程和血液流动过程联系起来；而心脏力学模型大都只研究舒张期的力学特性，即使研究收缩期心脏的力学问题，也往往对心电兴奋做了许多简化假设。

To insure safety in the refining process, sequential control system and interlock protection system are designed and realized.

为了保证生产过程安全、正常运行，设计并实施了高浓打浆过程的顺序控制与联锁保护。

Considering that main steam pressure of burning system is a big-lagged, big-inertial and nonlinear object, a cascade control system is designed, which uses the radiation signal as intermediate regulated variable.

针对火电厂燃烧过程中主蒸汽压力控制系统的大时滞、大惯性和非线性，采用以炉膛辐射信号为中间被调量的串级控制系统，并设计一个基于神经网络预测模型的模糊神经网络控制器作为主控制器。

In this paper the system with intermolecular reaction and intramolecular reaction was designed.

设计了含有分子内反应和分子间反应的聚合体系，这是一对竞争反应，竞争的结果可达到一定的平衡，使无法控制的凝胶化过程得以控制，从而合成了具有交联结构的大分子。

In this chapter, we present a brief summary of protein aggregation by the amyloid pathway based on what is known from other organ systems and describe quality control mechanisms that exist intracellularly to control protein misfolding and aggregation.

我们先根据已知的器官系统来总结蛋白通过淀粉体通路而聚集的过程，并描述存在于胞内的控制蛋白错误折叠和聚集的质量控制机制。

Experiment scheme has been designed for the test of composite material character gating and acquire the four critical values of strain invariants in strain invariant failure theory which are the basic data for finite analysis.

在有限元建模过程中，采用了非层合单元SOLID45，保证了铺层取向；在加载策略上，以单元的失效来控制载荷变化的加载方式，实现了通过载荷增量的动态变化来控制每一载荷步下失效的单元数量，形成较好的裂纹扩展路线，避免了在线性加载条件下构件的连锁破坏。

Then the reconstructed data are analyzed by multiple statistical indexes such as T2 or SPE to determine if the supervised process exceeds the normal control limits. If fault occurs, then the supervising program will alarm to prompt that the process has abnormal states. Because it is hard to get the inverse mapping from the kernel space to the original space after the original data are nonlinear mapped by the KPCA method, hence it is difficult to diagnose how the fault happened.

该方法首先构造系统正常时的核主元模型，然后将新的数据映射到该核主元模型，对数据进行重构，重构的数据用多元统计指标T2或SPE判断监测过程是否超出了正常的控制限，若有故障发生，则监测程序将给于警告，提示过程出现了异常操作状况。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。