Current-controlled Navigation
Current-controlled Navigation - Related Videos
01:27
Controlled-Current Coulometry: Overview
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2024
Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
01:18
Controlled-Current Coulometry: Coulometric Titration
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2024
Coulometric titrations are a form of titrimetric analysis where the reagent is generated electrically, and its amount is evaluated based on current and generating time. The electron serves as the standard reagent. The procedure is similar to conventional titrations, such as endpoint detection. The fundamental requirements for coulometric titrations are (1) 100% efficiency in the reagent-generating electrode reaction and (2) a stoichiometric and preferably rapid reaction between the generated...
05:42
Dynamic Navigation for Dental Implant Placement
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Cited by 9 •
2022
Dynamic computer-aided implant surgery (DCAIS) is a controlled implant surgical placement method performed without a surgical template using optical control. The real-time intraoperative control of movement and position of the surgical device simplifies the procedure and gives more freedom to the surgeon, providing similar precision as static navigation methods.
07:03
Dynamic Navigation in Endodontics: Guided Access Cavity Preparation by Means of a Miniaturized Navigation System
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Cited by 8 •
2022
Dynamic navigation systems (DNS) provide real-time visualization and guidance to the operator during endodontic access cavities preparation. The planning of the procedure requires three-dimensional imaging utilizing cone beam computed tomography and surface scans. After the export of the planning data to the DNS, access cavities can be prepared with minimal invasion.
05:19
Practical Methodology of Cognitive Tasks Within a Navigational Assessment
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Cited by 1 •
2015
Children who have complex communication needs can benefit from the use of a speech-generating device (SGD). Cognitive skills were identified as having an impact on the ability to navigate between levels of SGDs. This protocol describes the steps needed for Speech-language Pathologists to assess cognitive skills and navigational abilities.
FAQs
The magnitude and direction of current in electromagnetic coils alter the surrounding magnetic field. Changes in field strength and orientation can generate different combinations of force and torque, allowing a device to translate, rotate, or propel itself. This relationship gives the control system a way to convert electrical commands into specific microscale movements.
Coordinating the coils is important because each current adjustment contributes to the overall magnetic field acting on the device. Field coordination helps produce the intended combination of movement and rotation rather than an uncontrolled response. In bioengineering platforms, this supports programmable trajectories when a tool must maneuver through confined or geometrically complex environments.
Precision depends on accurate modulation of electrical current, coordinated control of the applied fields, and feedback during operation. These factors allow the system to compare intended and observed motion and adjust its commands as needed. Together, they influence whether the engineered device follows a desired path, maintains orientation, or responds effectively to changing navigation conditions.
Feedback provides information about the device’s motion during operation, allowing current commands to be refined rather than applied only once. When movement or orientation differs from the intended response, the control process can modify the electrical input and associated field coordination. This ongoing adjustment is especially relevant for precise navigation in complex microscale settings.
A typical workflow begins by selecting the desired device motion, then regulating current through the electromagnetic coils to create the corresponding magnetic influence. The device response is monitored, and the currents are adjusted through feedback to maintain or correct the motion. Repeating this control sequence enables programmable guidance, rotation, or propulsion during operation.
Current-controlled Navigation can support magnetic microrobotic tools intended for targeted drug delivery, minimally invasive procedures, and microscale manipulation. Its value comes from providing programmable movement in spaces where precise positioning matters. These applications connect electrical control of motion with bioengineering goals such as directing therapeutic tools, maneuvering procedure-related devices, or handling objects at small scales.