Category Archives: Frequency Response Testing. in Nuclear Reactors

The History of Frequency Response Testing in Nuclear Systems

The value of frequency response testing in nuclear systems has been appreciated for a number of years. Tests have been run to check stability margins and theoretical dynamics models. All of the early tests used sinu­soidal reactivity perturbations to excite the system. This approach was a direct implementation of the basic definition of the frequency response, but the equipment was […]

Read more

Data Records with a Nonintegral Number of Periods and Drift

Fourier analysis of a periodic signal is valid at all harmonic frequencies. The harmonics in a signal with duration T are at angular frequencies 2л/T’, 4л/Т’, 6л/Т’,…. The data record may be a single period of data, or it may be an integral multiple of a period. If the data record of length T’ contains exactly n periods, then only […]

Read more
1 2 3 4 7