现场控制

To solve the demerits of traditional open bunkering equipment, e.g. heavy dusty, severe belt tear, and expensive imported control system, etc., aiming at the features and technical requirements of hardware of imported unloading trippers, as well as the practical situation of power plant, the hardware and software of the control system for unloading trippers are designed reasonably to make it merged in a whole with the coal handling system.

为了解决传统敞开式加仓设备的粉尘大、对皮带磨损严重以及进口卸料小车控制系统价格昂贵等缺点，针对进口卸料小车的硬件特点、工艺要求和电厂现场实际情况，对卸料小车控制系统的软硬件进行了合理的设计，使其与整个输煤程控系统融为一体。

To control the freezing station system, we should control each kind of equipment each kind of sensor pitch point and the system between each subsystem movement order carries on the control with the DDC scene controller.

对冷冻站系统的控制是用DDC现场控制器对冷冻站系统的各种设备、各种传感器的节点和系统中各个子系统之间的运行顺序进行控制。

Bender controlling is belong to automatic pressure control system, though set bending force can change work roller slit camber validity, and cancel double and four tabular of shape deviation, and improve the disadvantage of shape symmetry, so it is very important in practice.

弯辊控制属于自动压力控制系统，通过调整弯辊力可以有效地改变工作辊的辊缝凸度，消除板形偏差中的二次、四次分量，改善对称板形缺陷，是现场技术攻关的重点。

The 709th institute has applied the high-tech in the national economic constructions in time, making the development for civil products in full vitality. The body of the civil product industry supported by these pillars, i.e. the computer, the automatic control, the electromechanics, the network and software, the PCB manufacture, has been initially formed. The products developed by us, such as the electronic control system for the high-speed tobacco rolling machine, the computer supervision control system for the shiplift, the power electronic products, the PCBs and so on, have contributed greatly to the national economic developments.

七○九所及时将高新技术应用于国民经济建设中，使民品开发呈现出勃勃生机，已形成了以计算机、自动控制、机电一体化、网络与软件、电路板制造等为主体的民品产业，研制的高速卷烟机电子控制系统、升船机计算机监控系统、功率电子产品、印制电路板等产品以及承接完成的众多现场工程管理信息系统和Internet/Intranet网络工程，为国民经济的发展作出了积极贡献。

T he 709th institute has applied the high-tech in the national economic constructions in time, making the development for civil products in full vitality. The body of the civil product industry supported by these pillars, i.e. the computer, the automatic control, the electromechanics, the network and software, the PCB manufacture, has been initially formed. The products developed by us, such as the electronic control system for the high-speed tobacco rolling machine, the computer supervision control system for the shiplift, the power electronic products, the PCBs and so on, have contributed greatly to the national economic developments.

七○九所及时将高新技术应用于国民经济建设中，使民品开发呈现出勃勃生机，已形成了以计算机、自动控制、机电一体化、网络与软件、电路板制造等为主体的民品产业，研制的高速卷烟机电子控制系统、升船机计算机监控系统、功率电子产品、印制电路板等产品以及承接完成的众多现场工程管理信息系统和 Internet/Intranet 网络工程，为国民经济的发展作出了积极贡献。

It is important to reduce the span of the hard roof to avoid its impact load on supports. However, at longwall top coal caving face, the periodical weight of roof is a main factor that crushes the top coal, which is beneficial to the top coal recovery. How to use the roof pressure safely is of crucial importance in top coal caving. Based on field monitoring, theoretical analysis of strata movement, the numerical model of compound structure of hard roof stepped cantilever and the top coal cantilever beam is built, and the parameters of the model are also determined. The elasto-plastic finite element method is used to analyze the effect of hard coal fracture under the abutment pressure of hard roof, and the cracking coefficient is defined according to the stress state of the element.

通过对岩层移动的现场观测，建立了&两硬&条件综放采场台阶悬臂—悬臂梁组合的煤岩组合结构力学模型，并以此煤岩结构为基础，建立&两硬&条件综放采场顶煤压裂的有限元数值模型，分析了坚硬顶板不同来压步距对坚硬顶煤的压裂效应，并确定了合理的支架阻力，从而对坚硬顶板进行有效的控制，消除坚硬项板对采场的冲击隐患，同时保证采场矿压对坚硬顶煤的有效压裂，达到提高顶煤回收率之目的，由此形成了坚硬顶煤、坚硬顶板条件下综放采场围岩控制的基本理论和方法。

It has been proved by on-line test that better control effect can be obtained by applying different intelligent control strategies to the different controlled factors of rolling reheating furnace.

经过对某轧钢厂的现场调试，证明针对影响钢坯加热炉炉温的不同的因素，采用不同的智能控制策略，能够取得较好的整体控制效果。

The intelligently signal measure and control device in field layer is applied widely in industry control.

测控装置广泛应用于工业控制的多个领域，是现场级的智能信号采集和控制设备。

In this paper, we introduce DCS and FCS, the application of DCS and FCS in heat power plant is mainly analyzed.

摘要简要介绍了集散控制系统和现场总线控制系统及其在火电厂中的应用，并做进一步的分析。

Industrial Ethernet is a new networked control system structure. It has notable excellence in comparison with FCS.

工业以太网是一种新型的网络控制系统，和现场总线控制系统相比，具有突出的优点。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。