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Related Concept Videos

Maximum Power Transfer01:16

Maximum Power Transfer

1.2K
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
1.2K

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Stable Wireless Power Transfer Using a Novel Omnidirectional Receiver and a Flexible Transmitter for Capsule Robots.

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    This study introduces a flexible wireless power system for capsule robots, addressing their increasing energy needs. The new system ensures stable and accurate power transfer, overcoming limitations of current capsule robot technology.

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    Area of Science:

    • Robotics
    • Biomedical Engineering
    • Electrical Engineering

    Background:

    • Capsule robots offer non-invasive gastrointestinal examination but face power limitations due to size constraints.
    • Increasing energy demands of advanced capsule robots challenge battery integration and lead to power insufficiency.

    Purpose of the Study:

    • To develop a stable and accurate wireless power transfer system for capsule robots.
    • To address the power insufficiency issues in advanced capsule robots.

    Main Methods:

    • Proposed a flexible transmitter and a 3-dimensional receiving coil (3DRC) using flexible PCB.
    • Developed mathematical and bending models for transmitter-receiver analysis and flexible coil characterization.
    • Implemented and compared dual-loop and single-loop control strategies for stable wireless power transfer.

    Main Results:

    • Evaluated system stability under static and dynamic conditions (varying positions, velocities, and rotation speeds).
    • Achieved high regulation accuracy with a mean absolute error of less than 1% (20.2 mV) at a target voltage of 3300 mV.
    • Demonstrated stable performance of the wireless charging system for capsule robots.

    Conclusions:

    • The proposed flexible wireless power system effectively addresses the energy challenges of capsule robots.
    • The system exhibits high regulation accuracy and stable performance, crucial for reliable capsule robot operation.
    • This advancement supports the development of more capable and longer-operating non-invasive gastrointestinal examination tools.