Digital Closed-Loop Driving Technique Using the PFD-Based CORDIC Algorithm for a Biaxial Resonant Microaccelerometer

Yang, Bo; Wu, Lei; Wang, Binlong; Wang, Qiuhua

doi:10.1155/2017/7861025

Cited by 2 publications

(3 citation statements)

References 13 publications

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“…From the literature [16][17][18][19][20][21][22][23][24][25][26], much hardware has been presented for CORDIC algorithms. However, the existing techniques exhibits several limitations like hardware cost and power consumption issues.…”

Section: Problem Methodology and System Model 31 Problem Methodologymentioning

confidence: 99%

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LH-CORDIC: Low Power FPGA Based Implementation of CORDIC Architecture

Inguva¹,

Seventiline²

2019

IJIES

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The coordinate rotation digital computer (CORDIC) is a class of shift-add algorithms for rotating vectors in plane. Several techniques use the trigonometry function to compute the digital waves, but that requires expensive memory usage. Due to the flexible characteristics, CORDIC is best alternative and allows high quantization accuracy by maximum word length. The linear-rate convergence creates the major problem in CORDIC algorithm with the source of word-length and iteration speed. The power consumption also a major issue here to affects the performance by array of shift-add operations. For further enhancement, in this paper, we propose a low power and high speed CORDIC (LH-CORDIC) design with an improved power control and hardware reduction techniques. We employ the canonical signed-digit (CSD) technique and Hcub algorithm for reducing the number of shifters and adder/subtractor in the design. Then, we propose an adder based on the advanced Boolean logic technique. These three techniques are used to redesign the entire CORDIC logic stages thereby contributing in power consumption reduction. The functionality of proposed LH-CORDIC algorithm is assessed through FPGA implementations. The simulation result shows that the proposed method has higher frequency of 78.91%, 83.42%, 79.89% and 77.01% when compared with conventional CORDIC method.

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Section: Problem Methodology and System Model 31 Problem Methodologymentioning

confidence: 99%

“…Yang et al [25] have proposed a phase frequency detector (PFD) based CORDIC algorithm for a biaxial resonant micro accelerometer. A conventional digital closed-loop self oscillation system based on the CORDIC algorithm was implemented and simulated using Simulink software to verify the system performance.…”

Section: Related Work: a Brief Reviewmentioning

confidence: 99%

LH-CORDIC: Low Power FPGA Based Implementation of CORDIC Architecture

Inguva¹,

Seventiline²

2019

IJIES

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“…Using the coordinate rotation digital computer (CORDIC) algorithm in the phase-locked loop [20], the orthogonal digital reference signals are simultaneously output:Rfalse(kfalse)=[sfalse(kfalse)cfalse(kfalse)] where s ( k ) = sinω c t , c ( k ) = cosω c t and ω c is the frequency of the oscillatory air flow velocity.…”

Section: Measurement Circuit and Demodulation Algorithmmentioning

confidence: 99%

Research on an Artificial Lateral Line System Based on a Bionic Hair Sensor with Resonant Readout

et al. 2019

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Inspired by the lateral line system of fish, an artificial lateral line system based on bionic hair sensor with resonant readout is presented in this paper. An artificial lateral line system, which possesses great application potential in the field of gas flow visualization, includes two different sensors: a superficial neuromast and a canal neuromast flow velocity sensor, which are used to measure the constant and oscillatory air flow velocity, respectively. The sensitive mechanism of two artificial lateral line sensors is analyzed, and a finite element simulation is implemented to verify the structural design. Then the control circuit of the artificial lateral line system is designed, employing a demodulation algorithm of oscillatory signal based on the least mean square error algorithm, which is used to calculate the oscillatory air flow velocity. Finally, the experiments are implemented to assess the performance of the two artificial lateral line systems. The experimental results show that the artificial lateral line system, which can be used to measure the constant and oscillatory air flow velocity, has a minimum threshold of 0.785 mm/s in the measurement of oscillatory air flow velocity. Moreover, the artificial canal neuromast lateral line system can filter out low-frequency disturbance and has good sensitivity for high-frequency flow velocity.

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Digital Closed-Loop Driving Technique Using the PFD-Based CORDIC Algorithm for a Biaxial Resonant Microaccelerometer

Cited by 2 publications

References 13 publications

LH-CORDIC: Low Power FPGA Based Implementation of CORDIC Architecture

LH-CORDIC: Low Power FPGA Based Implementation of CORDIC Architecture

Research on an Artificial Lateral Line System Based on a Bionic Hair Sensor with Resonant Readout

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