Detailed Noise Analysis of Current-to-Frequency Converters for Precision Analog Accelerometers

Date

2016-04-14

Author

Nuzumlali, Omer Lutfi

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

82
views

0
downloads

This paper presents a detailed noise analysis of current-to-frequency converters (CFC) for current output precision analog accelerometers. In the proposed method, time domain approach is used instead of frequency domain approach and the standard deviation of the velocity error after a fixed period of time is calculated. The noise analysis demonstrates that the error caused by voltage noises does not increase with time. However, the standard deviation of the error due to the feedback current noise increases with time. It is proportional to the square root of time, when the noise is white (thermal). If the noise is of flicker type, the standard deviation depends on the average time constant of the flicker noise. If the current time is smaller than the average time constant of the flicker noise, it is proportional to time. However, if the current time is larger than the average time constant, it is proportional to square root of the time as in thermal noise. The detailed noise analysis also shows that the standard deviation of the velocity error depends on the input current (or acceleration). In the case of thermal noise, it is proportional to square root of the input current. On the other hand, in the case of flicker noise, it is proportional to input current. These results agree with simulations in which the analog operation of CFC is transformed into digital domain.

Subject Keywords

Accelerometer, Analog To Digital Converter, Current To Frequency Converter, Noise Analysis

URI

https://hdl.handle.net/11511/63456

Conference Name

IEEE/ION Position, Location and Navigation Symposium (PLANS)

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Operation Analysis of an AC/DC Converter with Quasi-Active Power Factor Correction Rahmatian, M.; Moghani, J. Sh.; Abdi, B.; Gharehpetian, G. B. (2011-09-10) In this paper an attempt has been made to analysis the operation of an ac/dc converter with quasi-active power factor correction. This investigation has been made in two steps. In the first step, an analytical investigation is made considering some logical assumptions. In the second step, one of the assumptions has been neglected for a more precise analysis and the principal operation of the circuit has been investigated analytically again. To confirm the accuracy of the theoretical analysis results, the ci...
Phase sensitive detection of motor fault signatures in the presence of noise Akin, Bilal; Toliyat, Hamid; Orguner, Umut; Rayner, Mark (2007-05-05) In this paper, digital signal processor (DSP)-based phase-sensitive motor fault signature detection is presented. The implemented method has a powerful line current noise suppression capability while detecting the fault signatures. Because the line current of inverter driven motors involve low order harmonies, high frequency switching disturbances, and the noise generated by harsh industrial environment; the real-time fault analyses yield erroneous or fluctuating fault signatures. This situation becomes a s...
Prospects of FMCW-based frequency diverse array radar Cetiner, Ramazan; Cetintepe, Cagri; Demir, Şimşek; Hizal, Altunkan (2019-11-01) The linear frequency modulated (LFM) frequency modulated continuous wave (FMCW)-based frequency diverse array (FDA) radar concept is investigated in detail. The radar operates as a linear pulsed FMCW/FDA in the transmission (TX) mode while it operates as a pulsed FMCW/phased array (PA) in the receiving mode. The issues such as low signal-to-noise ratio (SNR) of FDA, the time-angle scanning and time-range ambiguities are studied. It is shown that the local instantaneous frequency bandwidth is much smaller th...
A Detailed Power Loss Analysis of Modular Multilevel Converter Erturk, Feyzullah; Hava, Ahmet Masum (2015-03-19) This paper thoroughly examines the semiconductor power loss characteristics of modular multilevel converters (MMC). Power loss behavior is examined under different pulse width modulation (PWM) methods and operating conditions. The effects of stored energy level, circulating current control utilization, power factor and submodule voltage balancing method on power loss are studied. Furthermore, unbalanced power losses and specific semiconductor stresses within a submodule are visualized by investigating the l...
Dynamic analysis of CMUTs in different regimes of operation Bayram, Barış; Ergun, AS; Yaralioglu, GG; Khuri-Yakub, BT (2003-01-01) This paper reports on dynamic analysis of an immersed single capacitive micromachined ultrasonic transducer (CMUT) cell transmitting. A water loaded 24 mum circular silicon membrane of a transducer was modeled. The calculated collapse and snapback voltages were 80 V and 50 V, respectively. The resonance frequency, output pressure and nonlinearity of the CMUT in three regimes of operation were determined. These regimes were: a) the conventional regime in which the membrane does not make contact with the subs...

Citation Formats

O. L. Nuzumlali, “Detailed Noise Analysis of Current-to-Frequency Converters for Precision Analog Accelerometers,” Savannah, GA, 2016, p. 898, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/63456.