Floor Grinding Machine Motor Parameter Feedback Control
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Solution Overview
Problem
Current floor grinding machines rely heavily on operator skill and attention to optimize the grinding process, lacking assistance for assessing the status of the grinding or polishing process, which can lead to suboptimal productivity and tool wear.
Innovation Solution
A method and system for a floor grinding machine that compares actual motor operating parameters with nominal values to determine if adjustments are needed, allowing for automatic or operator-assisted adjustments of grinding parameters such as rotational speed, pressure, and tool type-specific thresholds to optimize the grinding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the operator relies on personal skill and attention to assess the grinding process, then the system complexity remains low, but the productivity and grinding quality cannot be optimized beyond operator capability
Solution Approach 1:
The patent implements feedback by measuring actual motor operating parameters (current, power, torque) during grinding operations and comparing them against nominal values to detect deviations. This feedback loop enables automatic or operator-guided adjustments to grinding parameters, optimizing productivity and quality without requiring excessive system complexity. The control unit continuously monitors and processes parameter comparisons to maintain optimal grinding conditions.
Solution Approach 2:
The patent replaces the purely mechanical/operator-based assessment system with an electronic measurement and control system. Sensors and control units automatically measure motor parameters and grinding conditions, substituting the operator's sensory assessment (feel, hear, see) with precise electronic measurements. This substitution enables more accurate and consistent optimization of grinding processes.
2Manufacturing precision
If the grinding parameters are adjusted manually based on operator assessment, then the ease of operation is maintained, but the manufacturing precision and process optimization are limited
Solution Approach 1:
The system provides continuous feedback by comparing actual motor parameters with nominal values, automatically detecting when adjustments are needed. This feedback mechanism enables precise control of grinding parameters while maintaining ease of operation through automatic detection and clear indication of required adjustments, eliminating the need for complex manual assessment procedures.
Solution Approach 2:
The system performs self-assessment by automatically measuring motor operating parameters and comparing them against stored nominal values. The control unit independently determines when parameter adjustments are needed, reducing the operator's burden to complex assessments while maintaining ease of operation through simple indication and adjustment procedures.
3Productivity
If real-time monitoring and automatic adjustment systems are implemented, then the productivity and grinding quality are improved, but the device complexity increases
Solution Approach 1:
The patent implements a focused feedback system that monitors only critical motor operating parameters (current, power, torque) and compares them against nominal values. This targeted approach provides sufficient information for optimization without requiring complex comprehensive monitoring systems, balancing productivity improvement with acceptable system complexity.
Solution Approach 2:
The control unit automatically performs parameter comparison, deviation detection, and adjustment recommendations without requiring complex operator intervention. The system serves itself by autonomously monitoring its own performance and determining when adjustments are needed, reducing the complexity of operator-task coordination while maintaining high productivity.
Data Source
AI summary
This document provides a method of operating a floor grinding machine 100. The method comprises providing a grinding machine 100 comprising a frame 101, a motor 102 and at least one grinding element 1, causing the motor to drive the grinding element so as to rotate at a rotational speed, while in contact with a floor surface to grind, polish or mill the floor surface, determining an actual value of a motor operating parameter, determining a nominal value of the motor operating parameter, comparing the actual value of the motor operating parameter with the nominal value of the motor operating parameter, if a difference between the actual value of the motor operating parameter and the nominal value of the motor operating parameter exceeds a predetermined difference threshold, determining at least one grinding parameter to be adjusted, and causing the at least one grinding parameter to be adjusted.