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国家自然科学基金(60574038)

作品数:12 被引量:50H指数:4
相关作者:袁景淇汪志锋周枫杨柳胡斌更多>>
相关机构:上海交通大学上海第二工业大学更多>>
发文基金:国家自然科学基金国家重点实验室开放基金国家科技支撑计划更多>>
相关领域:自动化与计算机技术化学工程理学动力工程及工程热物理更多>>

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12 条 记 录,以下是 1-10
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荧光定量PCR仪实时控制与数据采集的后台实现
2006年
通过对荧光定量PCR仪硬件系统结构的分析,提出一种基于LabVIEW VI server技术的方法。该方法可以对PCR反应控制、数据采集两个独立的单片机系统进行实时监控,实现了前台数据实时显示、后台实时监控的功能。
周枫袁景淇
关键词:LABVIEWSERVER荧光定量PCR多线程实时控制
毕氏酵母细胞循环模型及实验验证被引量:1
2007年
基于芽殖酵母细胞形态的特征,提出了毕氏酵母甘油流加发酵过程的细胞循环模型.模型的输入为比生长速率,由宏观动力学模型得到.通过细胞循环模型,求得与细胞循环过程相关的变量,如细胞带芽分率和细胞数目浓度.实验验证了模型的有效性.
贾林袁景淇
关键词:毕氏酵母流加发酵比生长速率
基于PCTRAN的核电站仿真与严重事故分析被引量:3
2007年
介绍了美国MST公司的核电站仿真软件PCTRAN,给出了PCTRAN的主要组成模块和建模原理。针对我国压水堆(PWR)核电站为主的现状,采用PCTRAN的PWR/UTSG对汽轮机甩负荷、大破口失水事故(LOCA)、冷却剂泵转子卡死等典型事故工况进行了仿真。仿真结果表明,PCIRAN能够正确反映核电站的运行特性,在严重事故仿真方面尤有特色。
胡斌袁景淇
关键词:压水堆核电站模拟仿真严重事故
On-line Fault Detection Using SVM-based Dynamic MPLS for Batch Processes被引量:1
2006年
In this article, a nonlinear dynamic multiway partial least squares (MPLS) based on support vector ma- chines (SVM) is developed for on-line fault detection in batch processes. The approach, referred to as SVM-based DMPLS, integrates the SVM with the MPLS model. Process data from normal historical batches are used to de- velop the MPLS model, and a series of single-input-single-output SVM networks are adopted to approximate nonlinear inner relationship between input and output variables. In addition, the application of a time-lagged win- dow technique not only makes the complementarities of unmeasured data of the monitored batch unnecessary, but also significantly reduces the computation and storage requirements in comparison with the traditional MPLS. The proposed approach is validated by a simulation study of on-line fault detection for a fed-batch penicillin production.
李运锋汪志锋袁景淇
关键词:FAULTPARTIALSQUARESVECTORWINDOW
基于预排序的并行批处理过程调度模型被引量:3
2007年
针对并行批处理调度过程,以总提前完成时间最小化为目标函数,建立了一个基于交货期的调度模型.该模型考虑了订单的交货期等约束条件,将订单和设备之间的分配关系表达为0-1变量,采用预排序方法确定订单的处理顺序.采用分支定界法对模型进行求解,并与已有模型的计算结果比较,证明所提出的模型整数变量少且容易求解.
薛耀锋袁景淇
关键词:批处理过程交货期调度
压水堆蒸汽发生器水位的前馈模型预测控制被引量:11
2008年
在压水堆核电站中,引起反应堆停堆的主要原因之一是蒸汽发生器(SG)的水位超过了安全界限。为将SG水位控制在一定范围内以保证核电站安全、可靠、经济地运行,将蒸汽流量作为可测扰动加入预测模型中,设计了具有前馈补偿作用的模型预测控制器(MPC)。对给水流量增量施加约束以减小对给水阀的冲击,采用二次规划(QP)最优化算法求解给水流量的最优值,求解时先对水位施加硬约束,若无可行解则加入软约束,以保证系统的稳定性。仿真结果表明,与变增益PID控制相比,MPC的控制效果更好。
杨柳袁景淇
关键词:蒸汽发生器水位控制模型预测控制前馈补偿软约束
Switching stabilization and pole placement of uncertain switched systems
Robust controllers that ensure closed-loop pole placement are designed for uncertain discrete-time switched sy...
Ke Hu Department of Automation
基于支持向量机MPLS的间歇过程故障诊断方法被引量:12
2006年
In this article, a nonlinear dynamic multiway partial least squares (MPLS) based on support vector machines (SVM) is developed for on-line fault detection in batch processes. The approach, referred to as SVM-based DMPLS, integrates the SVM with the MPLS model. Process data from normal historical batches are used to develop the MPLS model, and a series of single-input-single-output SVM networks are adopted to approximate nonlinear inner relationship between input and output variables. In addition, the application of a time-lagged window technique not only makes the complementarities of unmeasured data of the monitored batch unnecessary, but also significantly reduces the computation and storage requirements in comparison with the traditional MPLS. The proposed approach is validated by a simulation study of on-line fault detection for a fed-batch penicillin production.
李运锋
关键词:FAULTPARTIALVECTORWINDOW
Online Supervision of Penicillin Cultivations Based on Rolling MPCA被引量:9
2007年
To reduce the variations of the production process in penicillin cultivations, a rolling multivariate statis-tical approach based on multiway principle component analysis (MPCA) is developed and used for fault diagnosis of penicillin cultivations. Using the moving data windows technique, the static MPCA is extended for use in dy-namic process performance monitoring. The control chart is set up using the historical data collected from the past successful batches, thereby resulting in simplification of monitoring charts, easy tracking of the progress in each batch run, and monitoring the occurrence of the observable upsets. Data from the commercial-scale penicillin fer-mentation process are used to develop the rolling model. Using this method, faults are detected in real time and the corresponding measurements of these faults are directly made through inspection of a few simple plots (t-chart, SPE-chart, and T2-chart). Thus, the present methodology allows the process operator to actively monitor the data from several cultivations simultaneously.
汪志锋袁景淇
关键词:在线监测
Feedforward Variable Structural Proportional-Integral-Derivative for Temperature Control of Polymerase Chain Reaction被引量:2
2006年
To track the rapidly changing temperature profiles of thermal cycling of polymerase chain reaction (PCR) accurately, an innovative feedforward variable structural proportional-integral-derivative (FVSPID) control- ler was developed. Based on the step response test data of the heat block, a reduced first order model was estab- lished at different operating points. Based on the reduced model, the FVSPID controller combined a feedforward path with the variable structural proportional-integral-derivative (PID) control. The modified feedforward action provided directly the optimal predictive power for the desired setpoint to speed up the dynamic response. To coop- erate with the feedforward action, a variable structural PID was applied, where the P mode was used in the case of the largest errors to speed up response, whereas the PD mode was used in the case of larger errors to suppress over- shoot, and finally the PID mode was applied for small error conditions to eliminate the steady state offset. Experi- mental results illustrated that compared to the conventional PID controller, the FVSPID controller can not only re- duce the time taken to complete a standard PCR protocol, but also improve the accuracy of gene amplification.
邱宪波袁景淇汪志锋
关键词:基因扩增热循环
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