施工工程监理投资控制浅析

投资控制是监理工作的三大控制目标之一,是监理工程师做好监理工作的主要手段和工作内容。本文中只对施工阶段的投资控制方法作一论述。     

在水利工程监理过程中的几点体会

文章简要介绍了水利工程项目施工阶段的监理及监理机构组建、监理人员素质要求、质量控制、投资控制、进度控制,并结合自己近几年来对监理工作的一点体会,与同行们互相交流学习,对提高工程监理的工作质量和开展监理工作有一定的启示。     

加强工程施工阶段监理的投资控制

随着我国监理制的建立和推广，施工阶段监理工作普遍存在业主不将投资控制授权给监理。程师，致使监理工作不能真正落到实处。本文论述了加强投资控制的必要性和具体的措施。     

加强工程施工阶段监理的投资控制

随着我国监理制的建立和推广，施工阶段监理工作普遍存在业主不将投资控制授权给监理工程师。致使监理工作不能真正落到实处。本文论述了加强投资控制的必要性和具体的措施。     

水利水电工程监理过程中有效做好投资控制的措施方法

水利水电工程监理过程中做好投资的控制,是水利水电工程建设监理管理工作中的重要内容。水利水电工程一般投资都较大、有着较长的施工周期、工程建设的过程中受到众多因素的影响。当前水利水电工程建设工程中做好监理工作都比较复杂。是一项重要的工作。对水利水电工程的监理工作,需要在施工前和施工的过程中加强管理工作,从而控制好工程的投资,保证工程的质量和施工工期。本文就水利水电工程投资控制进行了详细的分析和研究。     

浅议工程变更、现场签证的控制

投资控制是监理工作的一项主要内容，在施工阶段，监理工程师要搞好工程变更、现场签证的审查确认工作，做好投资控制。     

建筑工程监理工作浅议

本文简要分析了当前工程监理工作中普遍存在的问题,提出加强监理工作规范化的建议,并探讨了工程施工的质量、投资、进度“三大”监理控制。     

强化工程监理制度以确保高速公路质量

本文介绍了关于高速公路建设中的监理工作,国际贷款的高速公路必须实行监理工程师制度.采用工程质量控制、合同管理、进度控制、投资控制等措施.按照 FIDIC 条款进行监理,是保证高速公路工程质量关键.     

工程勘探现场监理中的问题与对策

监理工程师采用一定的方法和手段对整个勘察工作实行质量控制、进度控制和投资控制,工作重点在于事前控制,在满足质量、保证费用的前景下,对一些勘察工作可适当变通,做到监理工作既有灵活性又有公正性。     

建设项目的投资工期和质量控制

根据监理工作实践，论述了投资、工期和质量的控制，提出控制工期是保证投资效益的重要途径，控制质量是保证工程投资的有效手段；设计阶段是投资控制的重要环节。     

An LMI-based unified approach to reduced-order controller design

The design of reduced-order controllers is considered for stabilization control, covariance upper bound control, linear quadratic regulator, ∞ control, H∞ control, positive real control problems and robust H2 control, robust ∞ control and robust H∞ control problems for generalized linear plants without any additional assumptions. An upper bound of the order is obtained with which the (robust) controllers can guarantee stability constraints and satisfy the same design objectives as the so-called "full-order" controllers. A unified linear-matrix-inequality ( LMI) based approach to reduced-order (robust) controller design for all the above-mentioned problems is provided. It us shown that each of these problems is solvable if and only if two uncoupled LMIs with an LMI-type constraint have a pair of positive definite solutions, one of which has a lower dimension than that given by Skelton and iwasaki (1995). All desired reduced-order (robust) controllers are parameterized via the solutions of LMIs Moreov     

μ Analysis and μ synthesis for nonlinear robust control systems

A μ analysis and μ synthesis method for nonlinear robust control systems was presented. The nonlinear robust control problem using μ method was described. By means of the nonlinear state feedback and state coordinates transformation, many uncertain nonlinear systems can be transformed as a linear fractional transformation (LFT) on the generalized plant and the uncertainty. Based on the LFT, a linear robust controller can be obtained by the D-K iteration and then a corresponding nonlinear robust control law is constructed. An example was given in the paper. Project supported by the National Natural Science Foundation of China Synopsis of the first author Wu Min, professor, Ph. D, born in 1963, majoring in complex industrial process control, robust control, nonlinear control and expert control.     

Dynamic extending nonlinear H∞ control and its application to hydraulic turbine governor

There exists a large class of nonlinear systems with uncertainties, such as hydraulic turbine governors, whose robust control problem is hard to solve by means of the existing robust control approaches. For this class of systems, this work presents a dynamic extending H∞ controller via both differential geometry and H∞ theory. Furthermore, based on differential game theory, it has been verified that the proposed control strategy has robustness in the sense that the disturbance can be attenuated effectively because the L2-gain from the disturbance input to the regulation output signal could be reduced to any given level. Thirdly, a robust control strategy for hydraulic turbine governor is designed according to the proposed extending H∞ control method, and has been developed into a real control equipment. Finally the field experiments are carried out which show clearly that the developed control equipment can enhance transient stability of power systems more effectively than the conventional controller.     

遥控遥测系统在靶船上的应用

主要介绍了由主控中心和靶上监控系统组成的遥控遥测系统,该系统对靶载设备实行监测和控制。主控中心发送各种命令到靶上监控系统,并对靶上系统完成相应命令后回传的数据进行处理显示。     

Longwall mining automation horizon control:Coal seam gradient identification using piecewise linear fittingOA

Horizon control, maintaining the alignment of the shearer’s exploitation gradient with the coal seam gradient, is a key technique in longwall mining automation. To identify the coal seam gradient, a geological model of the coal seam was constructed using in-seam seismic surveying technology. By synthesizing the control resolution of the range arm and the geometric characteristics of the coal seam, a gradient identification method based on piecewise linear representation(PLR) is proposed. To achi...     

浙江沿海地区城市河道综合治理规划中几个问题的探讨

通过对温州市、瑞安市河道综合规划工作的总结 ,对具有防洪、排涝、排污、生态环境景观等多功能的城市河道 ,在整治规划原则、客水外排规划思路在防洪规划中的运用、断面形态的选择 ,及截污与引水在治污中的关系等规划中遇到的一些问题进行了探讨。     

An e-quality control model for multistage machining processes of workpieces

To track and control the changes of process quality attributes in multistage machining processes (MMPs), an e-quality control (e-QC) model is proposed. The e-QC model is defined as a quality information service node with e-formalizing technology, whose input/output and intermediate process (that is IPO) are known to other nodes, and its implemention in MMPs is provided. In order to establish the e-QC model, a measuring network is constructed to acquire the original quality data, and the changes of process quality attributes are monitored and diagnosed by the integrated quality analysis tools attached to the e-QC, which can be tracked by information template network in real time. Furthermore, a hierarchical control method is adopted to coordinate e-QCs, in which the quality loss and adjusting cost are used to quantify the opportunities for e-QCs to improve process quality. At last, a prototype is developed to verify the proposed methods. Supported by the National Basic Research Program of China (“973”) (Grant No. 2005CB724106) and the National High-Tech Research and Development Program of China (“863”) (Grant No. 2007AA00Z108)     

防汛抗旱调度管理信息系统数据库的设计

针对邯郸市防汛抗旱调度管理信息系统,提出了系统数据库的设计与实现技术,通过实例验证该技术有效.     

The iterative linear matrix inequality suboptimal design of decentralized ∞ control

An approach is proposed to design decentralized state feedback _∞ suboptimal controllers for LTI interconnected large scale systems. The parametrization theorem of decentralized robust state feedback controllers is developed in two steps and the design condition for the feedback gain is in the form of matrix inequalities. An iterative solution algorithm based on linear matrix inequality (LMI) techniques is proposed to obtain the decentralized feedback gain. The given examples are taken to show the application and the convergence of the algorithm. Project supported by the National Natural Science Foundation of China Synopsis of the first author Xie Yongfang, Doctoral student, born in 1972, majoring in _∞ control theory and its application, modem robust control, decentralized control.