Furthermore, numerical results reveal the influences of various uncertainty resources on the upper and lower bounds of uncertain frequencies and uncertainty propagation percent.
The design of an adaptive learning regulator is addressed for uncertain minimum phase linear systems (with known bounds, known upper bound on system order, known relative degree, known high frequency gain sign) and for unknown exosystems (with unknown order, uncertain frequencies).
A control algorithm emulating a dynamic vibration absorber (DVA) is developed for a flexible structure subject to harmonic disturbances of uncertain frequency.
The resulting solution sets have been studied through various post-processing methods, including visualization of Pareto fronts, uncertain frequency response plots, time-domain simulations, and random vibration analysis.
Aiming at the complex frequency transformation, the low measurement resolution and the uncertain frequency linking precision in the traditional frequency linking method, a new frequency linking method is proposed based on phase group synchronization.
Because of the uncertain frequency of fireplace use, we have not included homes with fireplaces in our estimate, although they likely are important sources of indoor PM.
Frequency was measured using 8 categories: never, one off, less than once a month, once a month, once or twice a week, 3-6 times a week, daily use and uncertain frequency.
The uncertain natural frequencies of moderately thick doubly-curved functionally graded composite panels reinforced by carbon nanotube (CNT) are investigated.
The WUR solutions are based on variety of different receiver architectures [7]: matched filter [11], radio frequency envelope detection (RFED) [12 21], uncertain intermediate frequency (U-IF) [22, 23], sub-sampling [24, 25], superregenerative oscillator (SRO) [8, 9, 26], and injection locking [27−29].
This paper presents the quantification of uncertain natural frequency for laminated composite plates by using a novel surrogate model.
Experimental results confirm the effectiveness of the algebraic parametric estimation on uncertain multi-frequency oscillating transient signals.
