Experiments with End-Point Control of a Flexible Link using the Inverse Dynamics Approach and Passive Damping

1990 ◽  
Author(s):  
T. E Alberts ◽  
L. J. Love ◽  
E. Bayo ◽  
H. Moulin
Keyword(s):  
Inverse Dynamics ◽  
Flexible Link ◽  
Passive Damping ◽  
End Point ◽  
Point Control

scholarly journals Flexible Link End-Point Control Based on Exact Dynamic Inversion: Experimental Results

2001 ◽  
Author(s):  
Aurelio Piazzi ◽  
Antonio Visioli
Keyword(s):  
Open Loop ◽  
Experimental Results ◽  
Flexible Link ◽  
End Point ◽  
Point Motion ◽  
Inversion Procedure ◽  
System Inversion ◽  
Point Control ◽  
Tip Position ◽  
Point To Point

Abstract In this paper we present a new method for the point-to-point motion control of the end-point of a single flexible link manipulator. The technique is based on an exact system inversion procedure, that allows to define a suitable motion law for the hub in order to reduce the residual vibration at the end of the tip motion. Thus, the end-point control is actually performed in open-loop, therefore avoiding the use of a sensor to measure the actual tip position. Experimental results demonstrate the effectiveness of the approach and that the overall control system is inherently robust to modelling errors.

Study on Dephosphorization Technologies in Converter with Semi-Steel

2011 ◽  
Vol 396-398 ◽  
pp. 1119-1125
Author(s):  
Jian Hua Zeng ◽  
Wei He ◽  
Yong Chen ◽  
Hong Pan
Keyword(s):  
Oxygen Supply ◽  
Average Rate ◽  
High Rate ◽  
Converter Steelmaking ◽  
End Point ◽  
Point Control ◽  
Dephosphorization Rate ◽  
Low Rate

Because of disadvantages of converter steelmaking with semi-steel in Panzhihua Steel, such as slow-footed slag forming, low rate of dephosphorization, high rate of rephosphorization after converter smelting, studies on increasing dephosphorization rate have been carried out. These studies comprise the optimization of slagging process, oxygen supply, bottom argon supply, end-point control of converter smelting, and so on. With these countermeasures, the rate of dephosphorization has been increased obviously. The results show that the average rate of dephosphorization is above 90% with single-slag process during converter smelting. Otherwise, content of phosphorus at the end-point of converter smelting can be controlled below 0.007%, and rephosphorization rate after converter smelting can be controlled below 0.003%, which meets the requirement of [P]≤0.010% for steel products.

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