为了节能和提高能源利用率，锅炉风烟系统采用了3台电动引风机，从而出现了常规双引风机的平衡偏置控制策略不适用于炉膛压力控制，且无法实现3台引风机之间的平衡控制的问题。对此，通过在Ovation DCS上开发IDFBALANCER宏模块，很好地解决了3台引风机间的平衡控制问题，并且提高了在改变自动控制方式的引风机数量时，炉膛压力调节回路的自适应能力。

To enhance the energy utilization efficiency,three motor-driven induced-draft fans (IDF)are ap-plied,causing problem taht the balance bias control strategy of the conventional double-IDF is not applica-ble to furnace pressure control.Moreover,balance control of the three IDFs can not be realized.Thus,by developing macro module IDFBALANCER in Ovtaion DCS,the balance control problem among the three IDFs was well solved,and the control loop''s adaptive ability with different auto IDF''s numbers was en-hanced.

为了适应太阳能电池生产的新工艺需求,提出一种新型的软着陆闭管扩散炉系统,为扩散炉系统向智能型、精密型的方向发展进行有益的探索,并阐述了软着陆闭管扩散炉系统的结构组成和工艺原理以及技术指标,重点对扩散炉系统中送料装置软着陆单元、炉门自动封闭单元以及炉管压力平衡单元的电气控制部分进行了详细的分析,其中运用了上下位机与PLC结合的控制方式对送料装置软着陆、炉门自动封闭进行了设计,运用PID控制方式对炉膛内压力进行控制,使其达到平衡。

In order to adjust the new technically requirem ent in solar battery m anufacture, a new soft landing closed tube diffusion system should be proposed as a beneficial exploration for diffusion system to the developm ent direction of intelligence and precision. In this article, the first part explain the structure, technical principle and technical index of this system , and som e detailed analysis on electric control system of soft landing unit in loading and unloading system , tube door autom atic seal off unit and tube pressure balance unit also w ill be described. In this design, the com bination of upper com puter,low er com puter and PLC is used to controlthe softlanding loading-unloading system and tube door autom atic seal off system . In order to balance tube pressure, the pressure is controlled by PID controlsystem .

塔河油田托甫台地区奥陶系碳酸盐岩储层安全压力窗口窄,储层以裂缝、缝洞为主,钻井中易漏、易涌。TP127H井是该区一口碳酸盐岩超深水平井,钻至井深6 914.39 m,漏失钻井液量1 538.67 m3,水平段钻进钻遇多个溶洞,为安全顺利钻至设计井深,对该井实施了欠平衡钻井工艺。论证了该井欠平衡钻井的可行性,分析了欠平衡钻井技术的钻井液密度、井口控制压力和井底压力,研究成果应用于TP127H井欠平衡钻井施工中。应用结果表明,该技术有效地解决了TP127H井漏失难题,对同类油藏的钻井施工提供了借鉴。

The Ordovician carbonate reservoir in Tuoputai Area of Tahe Oilifeld, the safety pressure window is narrow, the reservoir is dominated by caves and fractures and it is easy to cause lost circulation or kicking. TP127H well is an ultra-deep carbonate horizontal well in this area, which is drilled to the depth of 6914.39 meter with leakage of 1 538.67 m3. Several dissolved caverns were met dur-ing horizontal drilling. To drill to the design depth successfully, under-balanced drilling is performed for this well. This paper discusses the feasibility of under-balanced drilling of this well; analyzes the density of drilling lfuid, wellhead control pressure and bottom hole pressure in the under-balanced drilling; and the achievements are applied in under-balanced drilling of TP127H well. The results of ap-plication show that the technology is able to solve problem of lost circulation of TP127H well and also to provide references for drilling in the similar reservoirs.

针对母管制机组一直存在的蒸汽母管压力难以稳定控制的问题,本文提出了一种基于和利时DCS控制系统的APC协调控制方案。该方案可以解耦影响锅炉燃烧的主要因素,优化分配锅炉负荷,快速平衡锅炉产汽与外界用汽之间的能量差,达到稳定蒸汽母管压力的目的。现场的实际应用证明了该方案的可行性。

Aiming at unstable steam pressure of header system unit, an APC coordinated control scheme is proposed on the basis of the Hollysys control system in this paper. In order to stabilize header steam pressure, this scheme is able to decouple the main factors affecting the boiler combustion, optimize distribution of the load, and balance steamy energy difference between production and use. Feasibility of the scheme is proved by the practical application.

掘进面地层水土压力和密封舱压力相平衡是盾构机安全掘进的关键，密封舱压力控制是当前盾构研究的热点。研究根据场切深指数（Field penetration index, FPI）及扭矩切深指数（Torque penetration index, TPI）指标判断土体参数，实现地质的在线识别，为盾构机推力、扭矩和推进速度的设定提供依据。根据质量守恒定律并考虑盾构密封舱渣土的可松性，建立土压平衡盾构密封舱压力控制机理模型，并通过模型预测控制器进行多系统协调控制。对比常规比例-积分-微分（Proportion-integration-differentiation, PID）控制器，多系统协调控制具有更优的控制性能，使盾构机处于工况稳定，掘进快速，节能高效的理想状态。

The most important part of the excavation for earth pressure balance (EPB) shield machine is keeping the earth pressure and the water-earth pressure underground in balance, and the earth pressure in chamber has recently become a research focus. The on-line recognition of soil mass can be realized according to the field penetration index (FPI) and torque penetration index (TPI), and the soil parameters can be used for setting the thrust, torque and advance rate of shield machine. An earth pressure control model for chamber is built based on the law of mass conservation and the performance of the residue earth. In this model, multi-system coordination control is applied with model predictive controller. Setting a target for advance rate of shield machine in the design of the model predictive controller is a way to operate the advance rate and rotation speed of the screw conveyor at the same time. Compared to the conventional PID controller, model predictive controller has a bet