【作者】 肖聚亮；

【导师】 阎祥安；

【作者基本信息】 天津大学 ， 机械电子工程， 2006， 博士

【摘要】 本文以实现建筑物迁移动力系统的自动化、智能化监测控制为目的,在天津市科技攻关重大工程类项目、天津市城建集团天演建筑物顶升移位有限公司的共同资助下,重点对动力监控系统的软硬件设计、压力控制算法、建筑物状态监测与控制策略以及平移轨道沉降与动力补偿进行了研究。通过工程实际应用,验证了该装备的各项功能和性能指标。论文主要研究内容和成果如下:(1)研究了结构托换、结构分离、同步迁移、就位连接等建筑物迁移步骤,重点分析了风荷载作用下建筑物的抗倾覆特性,给出了滚轴平移方式的动力计算模型。(2)提出了一种以“工控机+可编程控制器+液压控制系统”为硬件平台,监控软件和建筑物结构分析软件为软件平台的分布式控制系统。对系统的两大组成部分液压动力系统、分布式监控系统进行了研究和设计,使动力监控系统能实现建筑物迁移的力、位双闭环控制。(3)提出了一种变步长灰色预测模糊控制算法。该算法根据新陈代谢原理建立等维新息预测模型,将预测概念扩展为前向和后向预测,并与模糊控制相结合,对压力进行控制。仿真和试验表明,该算法在不增加超调的情况下提高了响应时间,改善了控制效果。(4)应用综合考虑距离、速度和加速度的相似度聚类方法,对迁移速度、位移变化趋势、建筑物位姿以及位移同步多信息聚类融合监测控制进行了设计,并研究了不同状态下的相应控制策略。该方法提高了建筑物迁移动力系统的自动化、智能化水平。(5)利用弹性地基梁理论,得出了集中载荷作用下平移轨道沉降变形的计算模型。建立了建筑物顶升液压缸数学模型,分析了载荷、压力、顶升速度和位移的关系,并对平移轨道沉降的被动和主动补偿进行了研究。(6)通过工程实际应用,验证了建筑物迁移动力系统的各项功能及性能指标。更多还原

【Abstract】 With the purpose of achieving automatic and intelligent supervisory control of the power system for structure moving, this dissertation mainly deals with software and hardware design, pressure control algorithm, structure state monitor and control strategies, track settlement and compensation. The functions and performances of the equipment are verified by engineering applications. The main contents and contributions of this dissertation are listed as follows:(1) The structure moving processes, including structure underpinning, structure separation, synchronous motion, location and connection, are investigated. It especially analyses anti-overturn caused by wind loading and presents the force calculation method in moving engineering by rollers.(2) A distributed control system containing hardware and soft platforms is established. The hardware platform is composed of industrial computer, programmable logical controller and hydraulic control system, and the software platform is consisted of monitor and structural analysis software. Then the hydraulic control system and distributed supervisory control system are designed. The system can accomplish pressure and position double closed loop control.(3) A grey prediction model using equal-dimensional new information is formulated based on metabolic principle. The forecasting concept is extended to future and past forecast. Integrated grey prediction and fuzzy controller, a switching grey prediction fuzzy control algorithm is proposed to control pressure. Simulations and experiments show that it not only improves response time but also reduces overshoot.(4) Multi-information fusion supervisory control system is designed using similarity cluster. The multi-information contains speed, changing trend, pose and synchronization. Distance, speed and acceleration are all considered in the similarity calculation. The control strategies under different situations are also proposed. This investigation improves automatic and intelligent level of this structure moving power system.(5) Based on the theory of elastic groundsill beam, the equations of settlement for track with centralized loading are formulated. The model of lifting cylinder is更多还原