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The vibrational resonance (VR) method is used to analyze the simulated and experimental vibration signals with different bearing faults. At first, we get the curve of the response amplitude at the characteristic frequency versus the amplitude of the auxiliary signal to obtain the VR phenomenon. Based on the curve, we obtain the optimal amplitude of the auxiliary signal which can induce the strongest...
We investigate the aperiodic stochastic resonance (ASR) in a bistable fractional-order system when the fractional order lies in the interval (0, 2]. We find that a weak aperiodic signal can be amplified and optimized by varying the fractional order in the nonlinear system, no matter whether it has the assistance of the noise or not. We focus mainly on the self-similarity of the response to the input...
Txfonts In micro-electro-mechanical system based inertial navigation system (MEMS-INS)/global positioning system (GPS) integrated navigation systems, there exist unknown disturbances. This paper deals with the problem of adaptive robust estimation (ARE) to obtain high estimation accuracy. A filter gain matrix is designed to obtain the adaptive robust algorithm, in which the H∞ norm of the transfer...
In order to adapt high-speed, high performance (high power, low fuel consumption, low noise, low vibration, low pollution) as well as long-life development, this paper, on the basis for discussing shortage of present valve cam molded lines, introduces a deformed hyperbolical function cam molded-lines equation whose features are that the independent variable is the main structure parameter and operating...
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