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Intelligent closed-loop servo system principle for automated storage and retrieval systems
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Publish Time:
2025-04-02
I. System Structure
The intelligent automated storage and retrieval system (ASRS) closed-loop servo system is a highly integrated automated control system primarily responsible for the fast, accurate, and stable storage and retrieval of goods in an automated warehouse. This system mainly consists of the following components:
1. Controller: As the core component of the system, the controller receives instructions from the host computer and, based on the system status and feedback signals, calculates control signals to be sent to the servo driver.
2. Servo Driver: Converts the controller's command signals into current signals that can drive the servo motor.
3. Servo Motor: Accurately controls the rotation angle, speed, and acceleration of the rotor based on the current signal provided by the driver, thereby driving the transmission mechanism.
4. Transmission Mechanism: Converts the rotational motion of the servo motor into linear motion or specific complex motion to meet the needs of goods storage and retrieval in the automated warehouse.
5. Sensors: Real-time detection of the system's motion status, and feedback of status information to the controller, forming a closed-loop control system.
II. Feedback Control
The intelligent ASRS closed-loop servo system uses feedback control principles to achieve precise control. The system uses sensors to detect in real time the position, speed, and other status information of the servo motor and compares this information with the desired set value to calculate the error signal. The controller adjusts the control signal based on the error signal to make the motion state of the servo motor approach the set value, thus achieving precise control of the system.
III. PID Algorithm
In the intelligent ASRS closed-loop servo system, the PID (Proportional-Integral-Derivative) algorithm is a commonly used control algorithm. The PID algorithm achieves precise control of the servo motor's motion state by adjusting the three parameters of the control signal (proportional, integral, and derivative). The proportional term adjusts the system's response speed to the error, the integral term eliminates the system's steady-state error, and the derivative term predicts the system's future motion state and adjusts the control signal in advance. By adjusting the parameters of the PID algorithm, the system can achieve good control effects under different operating conditions.
IV. Servo Motor
The servo motor is one of the key components of the intelligent ASRS closed-loop servo system. Servo motors have characteristics such as high precision, high speed, and high dynamic response and can accurately control the rotation angle, speed, and acceleration of the rotor. Servo motors typically use brushless DC motors or AC servo motors, generating a magnetic field through internal permanent magnets or electromagnets that interact with the magnetic field generated by the current, producing torque and driving the rotor to rotate. The performance of the servo motor directly affects the overall performance of the intelligent ASRS closed-loop servo system.
V. Application Areas
Intelligent ASRS closed-loop servo systems are widely used in automated logistics, warehouse management, and manufacturing. In automated logistics, intelligent ASRS closed-loop servo systems can achieve fast, accurate, and stable storage and retrieval of goods, improving logistics efficiency. In warehouse management, the system can achieve real-time monitoring and management of goods in the warehouse, improving the intelligence level of warehouse management. In manufacturing, the system can achieve precise control of equipment and machinery on the production line, improving production efficiency and product quality. In addition, intelligent ASRS closed-loop servo systems can also be used in robotics, CNC machine tools, and printing machinery.
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