On-line frequency domain information for control of a flexible-link robot with varying payload

1989 ◽  
Vol 34 (12) ◽  
pp. 1300-1304 ◽  
Author(s):  
S. Yurkovich ◽  
F.E. Pacheco ◽  
A.P. Tzes
Keyword(s):  
Frequency Domain ◽  
Flexible Link ◽  
Line Frequency ◽  
On Line ◽  
Domain Information

On-Line Liquid and Gas Density Measurement-Advantages of Frequency Domain Transducers

1968 ◽  
Vol 1 (1) ◽  
pp. 14-15 ◽  
Author(s):  
J. Agar
Keyword(s):  
Quality Control ◽  
Frequency Domain ◽  
Gas Flow ◽  
Density Measurement ◽  
Control Applications ◽  
Gas Density ◽  
Flow Metering ◽  
Line Measurement ◽  
Transmission Of Information ◽  
On Line

This paper discusses the advantages of frequency modulated transmission of information in plants, and how this philosophy is adapted in practice in the form of two instruments for on-line measurement of liquid and gas densities. The importance of measuring density is well appreciated for on-line blending and various forms of quality control applications, but special attention is drawn to its necessity in gas flow metering.

Application of an Advanced Frequency Domain Identification Method for Modelling of Flexible-Link Manipulators

2003 ◽  
Author(s):  
G. M. Y. Lai ◽  
K. Ziaei ◽  
D. W. L. Wang ◽  
G. R. Heppler
Keyword(s):  
System Identification ◽  
Transfer Function ◽  
Frequency Domain ◽  
Contact Force ◽  
Strain Gauges ◽  
Flexible Link ◽  
Domain Identification ◽  
Frequency Responses ◽  
System Frequency ◽  
Identification Tool

This paper investigates the Comprehensive Identification from FrEquency Responses (CIFER) technique as a system identification tool for the Single Flexible Link (SFL) manipulator system. Frequency responses are identified for both the constrained and unconstrained motions. For the constrained case, two sets of frequency responses are identified based on actual contact force and an approximated contact force obtained through strain gauges readings. Identification results from CIFER® are compared to those from the Empirical Transfer Function Estimate (ETFE).

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