Wireless Swimming Microrobot: Design, Analysis, and Experiments

This paper presents a bidirectional wireless swimming microrobot that has been developed, analyzed, and experimentally tested. The robot is developed based on fin beating propulsion, using giant magnetostrictive films for head and tail fins. An innovative drive approach, using separate second order resonance frequencies of the head and tail fins to generate forward and backward thrusts, is proposed and implemented on a bidirectional swimming microrobot prototype. Dynamic model of the proposed microrobot has been derived based on theoretical analysis. Simulation and experimental results have demonstrated the feasibility of the proposed drive approach and design. The developed swimming microrobot features a low driving frequency, low power consumption, and a large range of swimming speed in both the forward and backward directions.

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The Research and Design of the Adaptive Pulse Demagnetizer

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.182-183.427 ◽

2012 ◽

Vol 182-183 ◽

pp. 427-430

Author(s):

Li Feng Wei ◽

Liang Cheng ◽

Xing Man Yang

Keyword(s):

Adaptive Control ◽

Power Consumption ◽

Low Power ◽

Control Method ◽

Experimental Results ◽

Low Power Consumption ◽

Reliable Operation ◽

Charge Current ◽

Long Life ◽

Research And Design

A adaptive control method of the pulse demagnetizer was presented, Can adjust the strength of the charge current automatically according to the changes of the magnetic content to ensure the constant of the magnetic field.The experimental results have shown that it has the advantages of low power consumption, strong anti-interference capability, stable and reliable operation, long life and good demagnetizing effect, when compared to the conventional demagnetizers.

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The Design and Development of a Dynamic Model of a Low-Power Consumption, Two-Pendulum Spherical Robot

IEEE/ASME Transactions on Mechatronics ◽

10.1109/tmech.2019.2934180 ◽

2019 ◽

Vol 24 (5) ◽

pp. 2406-2415 ◽

Cited By ~ 1

Author(s):

Samira Asiri ◽

Farshad Khademianzadeh ◽

Amirhassan Monadjemi ◽

Payman Moallem

Keyword(s):

Power Consumption ◽

Low Power ◽

Dynamic Model ◽

Low Power Consumption ◽

Spherical Robot ◽

Design And Development

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Study of a Low-Power-Consumption Piezoelectric Energy Harvesting Circuit Based on Synchronized Switching Technology

Energies ◽

10.3390/en12163166 ◽

2019 ◽

Vol 12 (16) ◽

pp. 3166

Author(s):

Jianfeng Hong ◽

Fu Chen ◽

Ming He ◽

Sheng Wang ◽

Wenxiang Chen ◽

...

Keyword(s):

Energy Harvesting ◽

Theoretical Analysis ◽

Power Consumption ◽

Low Power ◽

Impedance Matching ◽

Maximum Energy ◽

Low Power Consumption ◽

Piezoelectric Energy Harvesting ◽

Interface Circuit ◽

Piezoelectric Energy

This paper presents a study of a piezoelectric energy harvesting circuit based on low-power-consumption synchronized switch technology. The proposed circuit includes a parallel synchronized switch harvesting on inductor interface circuit (P-SSHI) and a step-down DC-DC converter. The synchronized switch technology is applied to increase the conversion efficiency of the circuit. The DC-DC converter is used to accomplish the impedance matching for different loads. A low-power-consumption microcontroller and discrete components are used to build the P-SSHI interface circuit. The study starts with theoretical analysis and simulations of the P-SSHI interface circuit. Simulations and experiments were conducted to validate the theoretical analysis. The experimental results show that the maximum energy harvested by the system with a P-SSHI interface circuit is 231 μW, which is 2.89 times that of a system without the P-SSHI scheme. The power consumption of the P-SSHI interface circuit can be as low as 10.6 μW.

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Eight-Bit Semiflash A/D Converter

VLSI Design ◽

10.1155/2007/80389 ◽

2007 ◽

Vol 2007 ◽

pp. 1-7 ◽

Cited By ~ 1

Author(s):

D. P. Dimitrov ◽

T. K. Vasileva

Keyword(s):

Power Consumption ◽

Low Power ◽

Experimental Results ◽

Low Power Consumption ◽

Cmos Process ◽

Ultra Low Power ◽

Mixed Signal ◽

Sample And Hold ◽

Reduced Power Consumption ◽

Subtraction Circuit

An 8-bit semiflash ADC is reported that uses a single array of 15 comparators for both the coarse and the fine conversion. Conversion is implemented in two steps. First, an estimate is made of the 4 most significant bits, which are then memorized in the output latch. Next, the remaining 4 bits are evaluated by the same array of comparators. The auto-zeroed comparators also perform the function of a sample-and-hold circuit. In the proposed 8-bit semiflash ADC, there are no sample-and-hold circuit, no DAC, no subtraction circuit, and no residue amplifier. As a result, a moderate conversion speed has been combined with a drastically reduced power consumption. The ADC was fabricated in a standard 0.6 μm double-poly, double-metal CMOS process. Experimental results show monotonic conversion with very low integral and differential nonlinearities. These features, combined with the ultra-low power consumption, make the proposed circuit very suitable for low-power mixed-signal applications.

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Optimal design of a high homogeneous and small-size shim coil for atomic spin gyroscope based on 0-1 linear programming

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-209319 ◽

2020 ◽

Vol 64 (1-4) ◽

pp. 165-172

Author(s):

Dongge Deng ◽

Mingzhi Zhu ◽

Qiang Shu ◽

Baoxu Wang ◽

Fei Yang

Keyword(s):

Linear Programming ◽

Power Consumption ◽

Low Power ◽

Optimization Design ◽

Structural Parameters ◽

Axial Position ◽

Low Power Consumption ◽

Optimal Method ◽

Atomic Spin ◽

Shim Coil

It is necessary to develop a high homogeneous, low power consumption, high frequency and small-size shim coil for high precision and low-cost atomic spin gyroscope (ASG). To provide the shim coil, a multi-objective optimization design method is proposed. All structural parameters including the wire diameter are optimized. In addition to the homogeneity, the size of optimized coil, especially the axial position and winding number, is restricted to develop the small-size shim coil with low power consumption. The 0-1 linear programming is adopted in the optimal model to conveniently describe winding distributions. The branch and bound algorithm is used to solve this model. Theoretical optimization results show that the homogeneity of the optimized shim coil is several orders of magnitudes better than the same-size solenoid. A simulation experiment is also conducted. Experimental results show that optimization results are verified, and power consumption of the optimized coil is about half of the solenoid when providing the same uniform magnetic field. This indicates that the proposed optimal method is feasible to develop shim coil for ASG.

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