Disc Gap Servo Control for Powder Grinding Precision
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Solution Overview
Problem
Current disc gap control methods in disc powder grinding systems, such as hydraulic and mechanical adjustments, lack precision and are time-consuming, affecting product quality and energy efficiency in industries like food processing and papermaking.
Innovation Solution
A disc gap servo control device utilizing an AC servo motor, transmission device, and position sensor, connected to a control cabinet with an industrial computer and programmable controller, enables real-time, high-precision control of the disc gap by adjusting the horizontal displacement of the rotating disc.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If hydraulic adjustment or mechanical adjustment is used to control the disc gap, then the control method is simple to implement, but the control precision of the disc gap is limited and time lag occurs
Solution Approach 1:
The patent replaces hydraulic adjustment and mechanical adjustment systems with an electric servo position positioning system. The servo system uses a servo motor coupled with a reduction mechanism to drive the rotating disc, eliminating the need for hydraulic pumps or manual mechanical adjustment mechanisms. This substitution provides precise digital control while maintaining operational simplicity through automated positioning.
Solution Approach 2:
The patent incorporates a position sensor that provides real-time feedback on the actual position of the rotating disc to the control system. This closed-loop feedback mechanism allows the system to continuously monitor and adjust the disc gap position, eliminating time lag and achieving high-precision control without complex manual adjustment procedures.
2Device complexity
If manual mechanical adjustment is used to control the disc gap, then the device complexity is low, but the response time is slow and causes time lag in gap control
Solution Approach 1:
The patent replaces manual mechanical adjustment with an automated electric servo system. The servo motor receives electronic control signals and automatically adjusts the disc gap position without manual intervention, eliminating the time lag associated with manual operation while keeping the overall device structure relatively simple through integrated control.
Solution Approach 2:
The control system pre-calculates the required disc gap position based on process requirements and immediately actuates the servo motor to achieve the target position. This preliminary positioning action ensures rapid response without waiting for manual adjustment, reducing time loss while maintaining manageable device complexity.
3Adaptability or versatility
If hydraulic system is used to drive the rotating disc for indirect disc gap control, then the adjustment range is achievable, but the control precision is limited due to indirect displacement control
Solution Approach 1:
The patent replaces the hydraulic system with an electric servo positioning system that directly controls the horizontal displacement of the rotating disc. The servo motor provides precise positional control through electronic feedback, achieving both the required adjustment range and high control precision by eliminating the indirect control mechanism of the hydraulic system.
Solution Approach 2:
The position sensor provides real-time feedback on the actual displacement of the rotating disc, allowing the control system to precisely control the disc gap position within the required adjustment range. This closed-loop control ensures high precision while maintaining full adaptability for various gap settings.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution achieves high-precision control of the disc gap, improving product quality, reducing energy consumption, and ensuring efficient operation by using a touch screen interface for inputting control information and displaying real-time working states, allowing for precise adjustment of the disc spacing.
Implementation Method 1
A position sensor is adopted for feeding back the actual displacement data of the rotating disc
Implementation Method 2
an electric servo position positioning system is adopted to drive the rotating disc to move
Data Source
AI summary
Provided is a disc gap servo control device and method for a powder grinding system, which includes a disc powder grinding machine, a rotating speed regulating device of a rotating disc, the disc gap servo control device and a control cabinet. The method includes the following steps of: (1) inputting a control information; (2) an industrial computer obtaining a current disc gap and displaying the disc gap on a touch screen; (3) the disc gap servo control device adjusting the disc gap; (4) the current disc gap reaches a target disc gap; and (5) a frequency converter controlling a motor rotating speed, so that the actual rotating disc rotating speed can reach a target rotating speed of the rotating disc. The operation parameters of the rotating disc are observed by the industrial computer in real time, and finally a high-precision servo control of the disc gap can be realized.