Real‐Time Spectrum Analysis in the Field Using a General Purpose Computer

1970 ◽  
Vol 47 (1A) ◽  
pp. 70-70
Author(s):  
E. M. Fitzgerald ◽  
A. A. Petrini ◽  
J. K. Zimmerman
Keyword(s):  
Real Time ◽  
Spectrum Analysis ◽  
Time Spectrum ◽  
General Purpose ◽  
General Purpose Computer ◽  
Purpose Computer

Accelerando: A Real-Time, General Purpose Computer Music System

1989 ◽  
Vol 13 (4) ◽  
pp. 54 ◽  
Author(s):  
Keith Lent ◽  
Russell Pinkston ◽  
Peter Silsbee
Keyword(s):  
Real Time ◽  
Computer Music ◽  
General Purpose ◽  
General Purpose Computer ◽  
Purpose Computer

Speed Synchronization System of Master-Slave Motor Based on Repetitive Control

2014 ◽  
Vol 644-650 ◽  
pp. 523-526
Author(s):  
Yun Ling ◽  
Huan Chen ◽  
Fei Li
Keyword(s):  
Real Time ◽  
Spectrum Analysis ◽  
Repetitive Control ◽  
Speed Control ◽  
Time Spectrum ◽  
Mechanical Resonance ◽  
Synchronization System ◽  
Speed Controller ◽  
Control Scheme ◽  
Magnet Wire

In the wrapping process of magnet wire, as the haulage speed of master motor varies periodically, it is difficult for slave wrapping motor to track master motor due to the mechanical resonance, which destabilizes the wrapping pitch. In the proposed system, the synchronization speed control scheme of master-slave motor based on repetitive control compensation is employed. In the process of control, real-time spectrum analysis of the haulage speed is given, which can be used to adjust the parameters of wrapping speed controller adaptively with the acquired characteristic information of the mechanical resonant. Simulation shows that wrapping speed can track haulage speed well in the proposed system, and the maximum tracking synchronous deviation can be reduced to 56% of that in the system without repetitive control.

Real time spectrum analysis

1983 ◽  
Vol 216 (1-2) ◽  
pp. 191-203 ◽  
Author(s):  
A. Blunden ◽  
D.G. O'Prey ◽  
W.H. Tait
Keyword(s):  
Real Time ◽  
Spectrum Analysis ◽  
Time Spectrum

An Efficient Method for Calculating Damped Critical Speeds of Rotor-Bearing Systems

1991 ◽  
Author(s):  
D. Z. Wang ◽  
D. L. Taylor
Keyword(s):  
Element Model ◽  
General Purpose ◽  
Critical Speeds ◽  
Rotor Bearing ◽  
General Purpose Computer ◽  
System Equations ◽  
Newton Raphson ◽  
Reported Data ◽  
Derivatives Of ◽  
Purpose Computer

Abstract This paper describes an analytical approach for calculating the damped critical speeds of multi-degree-of-freedom rotor-bearing systems. It is shown that to calculate the critical speeds is equivalent to finding the roots of a proposed matrix algebraic equation. The technique employes a Newton-Raphson scheme and the derivatives of eigenvalues. The system left eigenvectors are used to simplify the calculations. Based on this approach, a general-purpose computer program was developed with a finite element model of rotor-bearing systems. The program automatically generates system equations and finds the critical speeds. The program is applied to analyze a turbomachine supported by two cylindrical oil-film Journal bearings. The results are compared with reported data and the agreements are very good.

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