Related Experiment Video
Updated: Apr 4, 2026

Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro
Published on: August 28, 2019
Stochastic Resonance in an Underdamped System with Pinning Potential for Weak Signal Detection
Haibin Zhang1, Qingbo He2, Fanrang Kong3
1Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China. zhbzhbyr@mail.ustc.edu.cn.
Abstract:
Stochastic resonance (SR) has been proved to be an effective approach for weak sensor signal detection. This study presents a new weak signal detection method based on a SR in an underdamped system, which consists of a pinning potential model. The model was firstly discovered from magnetic domain wall (DW) in ferromagnetic strips. We analyze the principle of the proposed underdamped pinning SR (UPSR) system, the detailed numerical simulation and system performance. We also propose the strategy of selecting the proper damping factor and other system parameters to match a weak signal, input noise and to generate the highest output signal-to-noise ratio (SNR). Finally, we have verified its effectiveness with both simulated and experimental input signals. Results indicate that the UPSR performs better in weak signal detection than the conventional SR (CSR) with merits of higher output SNR, better anti-noise and frequency response capability. Besides, the system can be designed accurately and efficiently owing to the sensibility of parameters and potential diversity. The features also weaken the limitation of small parameters on SR system.
More Related Videos
Related Concept Videos
Second Order systems II
Concept of Resonance and its Characteristics
Forced Oscillations
Damped Oscillations
Although friction and other non-conservative...
Design Example: Underdamped Parallel RLC Circuit
Starting with a fixed...
RLC Circuit as a Damped Oscillator
Consider a series RLC circuit. Here, the presence of resistance in the circuit leads to energy loss due to joule heating in the resistance. Therefore, the total electromagnetic energy in the circuit is no longer constant and decreases with time. Since the magnitude of charge, current, and potential difference continuously decreases, their oscillations are said to be damped. This is...

