排序方式: 共有6条查询结果,搜索用时 328 毫秒
1
1.
In the paper,an iterative method is presented to the optimal control of batch processes.Generally it is very difficult to acquire an accurate mechanistic model for a batch process.Because support vector machine is powerful for the problems characterized by small samples,nonlinearity,high dimension and local minima,support vector regression models are developed for the optimal control of batch processes where end-point properties are required.The model parameters are selected within the Bayesian evidence framework.Based on the model,an iterative method is used to exploit the repetitive nature of batch processes to determine the optimal operating policy.Numerical simulation shows that the iterative optimal control can improve the process performance through iterations. 相似文献
2.
3.
桥式卸船机抓斗的定位和防摆控制 总被引:1,自引:0,他引:1
介绍一种桥式卸船机抓斗的定位和防摆控制方法。为实现对小车的位置和抓斗的摆动分别控制而设计了两个控制回路,其中一个回路采用常规的PID算法来调节小车的位置和速度,同时另一个回路则利用模糊逻辑控制器来消除抓斗的摆动。仿真结果表明了该方法的可行性,与线性状态反馈控制(LQR)相比,该方法对不同的绳长有着较好的鲁棒性。 相似文献
4.
5.
6.
提出了基于核主元分析和Fisher判别分析相结合的非线性统计过程监控和故障诊断新方法.该方法首先利用非线性核函数将数据从原始空间映射到高维空间,然后在高维空间中利用线性Fisher判别分析法提取数据最优的核Fisher判别矢量和特征矢量,通过计算特征矢量之间的欧式距离来实现过程监控.若系统发生故障,则根据当前故障的判别矢量和历史故障数据集中所含故障的最优核Fisher判别矢量的相似度进行故障诊断.所提出的方法能有效的捕获过程变量之间的非线性关系,汽轮机特征故障数据集仿真试验验证了该方法的有效性. 相似文献
1