A Solution to the Sampled, Minimum-Time Problem

1964 ◽  
Vol 86 (1) ◽  
pp. 145-150 ◽  
Author(s):  
R. W. Koepcke

A solution of the linear, sampled, minimum-time problem is developed which permits the determination of the control policy in real time by an on-line digital control computer. The solution is illustrated by means of two examples.

2013 ◽  
Vol 18 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Yevgenia Chvertko ◽  
Mykola Shevchenko ◽  
Andriy Pirumov

Statistical methods of analysis are currently widely used to develop control and monitoring systems for different welding processes. These methods allow to obtain information about the process including effect of all factors on its results, which is often difficult to evaluate due to the complexity of the process. The authors made efforts to apply these methods to develop the system for monitoring the parameters of flash-butt welding in real-time mode. The paper gives brief information about the features of flash-butt welding of reinforcement bars and some basic limitation of this process application. The main reasons of formation of defects in welded joints are given as well as analysis of possibility of application of monitoring systems for their determination. The on-line monitoring system based on neural networks was developed for evaluation of process deviations. This system is believed to be adequate for determination of process violations resulting in disturbances of welding parameter and can be used for prediction of possible defects in the welded joints.


1984 ◽  
Vol 77 (3) ◽  
pp. 220-221
Author(s):  
Ray C. Shiflett ◽  
Harris S. Shultz

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