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closed loop controller

closed loop controller

mechonics ag

81825-D München
        2/B Unnützstrasse

+49 89 42024207

+49 89 42024206

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closed loop controller

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A closed-loop controller, also known as a feedback control system or a feedback controller, is a control system that uses feedback from the output of a process or system to adjust and control the input. It is a fundamental concept in control theory and is widely used in various engineering, industrial, and automation applications. Here are the key components and characteristics of a closed-loop controller: 1. Components of a Closed-Loop Controller:
  • Process or System: The system or process you want to control, which could be anything from a mechanical system to an electronic circuit or a chemical reaction.
  • Sensor (Feedback Element): A sensor or measurement device is used to continuously or periodically monitor the output or state of the system. It provides feedback information to the controller.
  • Controller: The controller is responsible for making decisions based on the feedback from the sensor. It calculates the control action needed to achieve and maintain the desired setpoint or reference value.
  • Actuator: The actuator is the device or mechanism that receives the control signals from the controller and applies the necessary adjustments to the system.
  • Setpoint: The desired or target value that you want the system to achieve or maintain. It is set by the operator or the control system.
2. Operation of a Closed-Loop Controller:
  • The controller continuously compares the actual output (as measured by the sensor) to the desired setpoint.
  • Based on the error between the actual and desired values, the controller calculates a control action that is applied through the actuator to the system.
  • The control action is designed to reduce the error and bring the system closer to the setpoint.
  • The process repeats in a continuous feedback loop, with the controller making adjustments based on the feedback until the system reaches and maintains the setpoint.
3. Advantages of Closed-Loop Control:
  • Improved Accuracy: Closed-loop control systems can provide high accuracy and precision in maintaining the desired setpoint.
  • Robustness: They can handle disturbances and external factors that may affect the system's performance.
  • Adaptability: Closed-loop systems can adapt to changes in the system's behavior or operating conditions.
  • Reduced Steady-State Error: They can reduce or eliminate steady-state errors compared to open-loop control systems.
  • Predictive Control: Some advanced closed-loop controllers can predict future system behavior and make proactive adjustments.
4. Applications: Closed-loop control is used in a wide range of applications, including:
  • Industrial automation and process control
  • Robotics and motion control
  • Aircraft and spacecraft control
  • Automotive control systems (e.g., cruise control)
  • Temperature and environmental control systems
  • Electronic circuits and amplifiers
  • Medical devices and healthcare equipment
  • HVAC (Heating, Ventilation, and Air Conditioning) systems
  • Energy management systems

5V via USB-interface

6V user plug

USB 2.0 (high speed)

3 x 9pin female D-sub connector

3 x 2pin female MMCX sockets


closed loop controller

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