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Related Concept Videos

Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
Introduction to Global Positioning System01:30

Introduction to Global Positioning System

The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense  for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
Azimuths and Bearings01:19

Azimuths and Bearings

Azimuths and bearings are essential concepts in surveying, providing methods to express the direction of a line relative to a meridian. Azimuths refer to the clockwise angle measured from the north end of a reference meridian to the given line, ranging from zero to 360 degrees. This method gives a comprehensive directional reference within a full 360-degree circle, making it a straightforward way to communicate direction in various fields, including navigation, cartography, and...
Feedback control systems01:26

Feedback control systems

Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Adjusting a Traverse01:12

Adjusting a Traverse

In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

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.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it instrumental in...

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Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
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Published on: May 10, 2020

Sun tracking systems: a review.

Chia-Yen Lee1, Po-Cheng Chou, Che-Ming Chiang

  • 1Department of Materials Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan 912;

Sensors (Basel, Switzerland)
|March 14, 2012
PubMed
Summary
This summary is machine-generated.

Accurate solar tracking is crucial for maximizing solar energy capture in thermal and photovoltaic systems. This paper reviews significant advancements in sun tracking technologies, covering both closed-loop and open-loop approaches.

Keywords:
solar orientationsolar positionsun sensor algorithmsun tracking system

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Area of Science:

  • Renewable Energy Engineering
  • Solar Energy Conversion
  • Control Systems

Background:

  • Solar thermal and photovoltaic (PV) systems require precise sun tracking to optimize solar energy acquisition.
  • The efficiency of solar power generation is directly proportional to the accuracy of the sun tracking system.
  • Numerous sun tracking systems have been developed over the last two decades.

Purpose of the Study:

  • To provide a comprehensive overview of the current state of sun tracking system technology.
  • To categorize and describe significant proposals in the field of solar tracking.
  • To differentiate between closed-loop and open-loop sun tracking methodologies.

Main Methods:

  • Literature review of existing sun tracking systems.
  • Categorization of tracking systems into closed-loop and open-loop types.
  • Analysis of significant technological proposals and their characteristics.

Main Results:

  • Identification of key advancements in solar tracking system design over the past 20 years.
  • Detailed description of various closed-loop sun tracking system configurations.
  • Detailed description of various open-loop sun tracking system configurations.

Conclusions:

  • Accurate sun tracking is indispensable for maximizing the output power of concentrated solar systems.
  • Both closed-loop and open-loop tracking systems offer viable solutions for solar energy optimization.
  • The paper serves as a valuable resource for understanding the evolution and types of solar tracking systems.