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Related Concept Videos

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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
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Relative Motion Analysis using Rotating Axes-Problem Solving01:29

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Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
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Relative Motion Analysis using Rotating Axes01:25

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Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
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Electro-mechanical Systems01:19

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Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
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Torque Free Motion01:15

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Updated: Jul 1, 2025

Isokinetic Robotic Device to Improve Test-Retest and Inter-Rater Reliability for Stretch Reflex Measurements in Stroke Patients with Spasticity
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Optoelectronic Torque Measurement System Based on SAPSO-RBF Algorithm.

Kun Xia1, Yang Lou1, Qingqing Yuan1

  • 1Department of Electrical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.

Sensors (Basel, Switzerland)
|March 13, 2024
PubMed
Summary
This summary is machine-generated.

This study presents a novel photoelectric torque measurement system for power systems. The new method enhances accuracy and calibration, reducing measurement errors to 0.92%.

Keywords:
SAPSO-RBF algorithmmeasurement of minute signalsphotoelectric torque measurementquadrant photoelectric sensortorque calibration

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Area of Science:

  • Electrical Engineering
  • Mechanical Engineering
  • Sensor Technology

Background:

  • Accurate torque measurement is crucial for power system safety and stability.
  • Conventional strain gauge methods suffer from accuracy and repeatability issues due to adhesion.
  • Existing systems lack traceability and are influenced by environmental factors.

Purpose of the Study:

  • To introduce an advanced photoelectric torque measurement system.
  • To overcome limitations of traditional strain gauge-based torque sensors.
  • To improve the accuracy and reliability of torque measurements in power systems.

Main Methods:

  • Utilized quadrants of photoelectric sensors to detect torque-induced deformations on a rotational axis.
  • Developed a simulated annealing combined with particle swarm algorithm (SAPSO) to optimize a radial basis function neural network (RBF).
  • Employed the SAPSO-RBF model for calibrating measured torque values against standard references.

Main Results:

  • The photoelectric system accurately determines torque measurements.
  • The SAPSO-RBF model effectively calibrates sensor readings.
  • Achieved a minimized measurement error of 0.92%.

Conclusions:

  • The proposed photoelectric torque measurement system offers high accuracy and reliability.
  • The SAPSO-RBF optimization significantly enhances calibration performance.
  • This technology provides a traceable and stable solution for power system torque monitoring.