The core issue of nutrient control was focused and the dynamic studies on phosphorus pollution of the whole watershed were conduced: 1 to highlight the non-point source pollution control, which is the difficulties research subject of water resource protection; 2 to perfect the calculation method for phosphate input and output, providing important basis on decision making for nutrient control; 3 to establish database and water quality model, to predict the water quality response after different phosphorus control schemes realized; 4 to determine admissible phosphorus loading and control standard according to the quantitative relationship between the external force function (mainly the exotic nutrient salt concentration or loading) and internal nutrient state response, and to work out the effective and practical techniques for eutrophication control.

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Electric control valve for variable displacement is a novel control component in automotive air conditioners, which turns mechanic capacity control into electric control. It can use optimal algorithms to control capacity, and has interface with automotive systematic control unit. It has fantastic foreground.

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Main contributions and achievements are as follows:A general non-equilibrium rigorous model for RDP is developed in this thesis. Based on the pseudo-homogenous assumption, two main factors reaction and separation are de-coupled, and an RDP model with the same format as that for a traditional distillation process is established. To solve the model with a large number of algebraic equations, modified M-K equations with tri-diagonal matrix form are developed based on the improved Separation Efficiency Functions, which greatly increases the iteration efficiency. This thesis also develops a general reactive distillation dynamic model. Through splitting of the differential variables based on SEFS, large-scaled differential algebraic equations can be solved with the improved Gear's algorithm which makes the dynamic model suitable for the on-line application. A simulation platform for the control loop design and evaluation of RDP by introducing control system equations into the dynamic model is also developed.A lactic acid purification pilot-scale RDP is investigated.

論文對熱點問題——反應(yīng)精餾過程的建模與優(yōu)化控制相關(guān)技術(shù)進(jìn)行了深入的研究亚洲国产欧美日韩在线人成，取得了一系列成果：1、建立了反應(yīng)精餾過程機(jī)理模型三级国产欧美性爱片，基于擬均相假設(shè)野狼福利视频，將反應(yīng)和分離過程進(jìn)行解耦，推導(dǎo)出反應(yīng)精餾過程的非平衡級穩(wěn)態(tài)模型和動態(tài)模型亚洲欧美另类片专区，通過引入推廣的分離效率函數(shù)男女晚上看的国产在线视频，對模型變量進(jìn)行了合理劃分，顯著提高了模型求解效率黄色性爱啪啪免费观看；將動態(tài)模型和控制系統(tǒng)方程結(jié)合日本三级香港三级人妇视频，建立了反應(yīng)精餾過程控制系統(tǒng)研究的輔助工具www.26uuuu。2久久r久久、全面分析了乳酸提純反應(yīng)精餾新工藝試驗裝置，利用本文建立的過程機(jī)理模型国产在线精品26uuu，對該試驗裝置進(jìn)行了穩(wěn)態(tài)和動態(tài)性能分析及水力學(xué)核算免费A∨片在线网址；設(shè)計和分析了單邊質(zhì)量控制方案，比較了間接和直接物料平衡控制兩種方案的控制性能噜噜熟女导航。

Along with advancement of industrial control demand, development of control theory and computer technology, a predictive control algorism is produced with effective control and strong robustness, which is applicable to complex industrial processes and the control system, and is successful applied in petroleum, chemical industry, metallurgy and mechanism, and have a good prospect in application.

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Fuzzy controller is designed according to human"s controlling experience of systems. After reducing the operator"s controlling experience to a set of qualitatively descriptive conditional statements, and then quantifying them by using the theory of fuzzy set, the controller can transform the natural language of human"s controlling strategies into the algorithmic language acceptable for the computer, then the controller can receive human"s experience, and imitates humans operating strategies and effectively control some objects that can not be constructed into the mathematical model.

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The hardware consists of industrial personal computer, temperature data collecting module, analog output card and thermocouples. With Visual Basic6.0 as a development platform, the software is based on control algorithm.

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This system has function dispersion and can deal with parameter checking, calculation, control strategy, information output and process parameters time-control. These functions will auto-run effectually and reliably that make control dispersion. Fieldbus intelligential model layer in this system is made of a few intelligential models in the fields.

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Various ventilation methods are discussed and the necessity to use feed-forwards traffic forecast ventilation control is put forward. Autoregressive Moving Average process is implemented to forecast traffic volume. Fuzzy intelligent control strategy is developed to address the problem that tradition control methods could hardly response to cross-river tunnel contaminant in time.

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The possibility was discussed that the conventional mechanic carding machine was modified with a computer automatic controlling system based on the artificial neural network.

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The feedback of the closed loop control system is comprised of position sensor and system software.

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