Factory Power Control via Machine Tool Speed Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Facilities with multiple industrial machines experience significant peak electric power consumption during positioning and feeding motions, overwhelming the power supply system, and existing solutions are not effective in managing these peaks in real-time.
Innovation Solution
An electric power consumption control system that monitors and adjusts the rotational acceleration/deceleration speed and rotational speed of individual machines based on facility-wide power consumption data to maintain consumption within specified limits, reducing load on the power supply during peaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple machine tools perform positioning and feeding motions simultaneously, then productivity is improved, but electric power consumption peaks occur causing load on the power supply system
Solution Approach 1:
The control device receives information about facility-wide electric power consumption and uses this feedback to adjust the positioning and feeding speeds of the machine tool. When power consumption exceeds a predetermined threshold, the control device reduces speeds to bring consumption back within limits, creating a closed-loop control system that balances productivity with power supply stability
Solution Approach 2:
The invention dynamically adjusts the positioning and feeding speeds based on real-time power consumption conditions. Rather than operating at fixed speeds, the system continuously adapts motor speeds in response to changing facility power consumption levels, allowing optimal performance when power is available and reduced consumption when power limits are approached
2Power
If an operator manually switches to energy saving mode to reduce power peaks, then electric power consumption is reduced, but the operator cannot respond in real-time when peaks occur during machining work
Solution Approach 1:
The machine tool's control device automatically monitors facility power consumption and adjusts its own operating parameters without operator intervention. The system self-regulates by reducing positioning and feeding speeds when power consumption thresholds are exceeded, eliminating the need for manual mode switching while maintaining power consumption control
Solution Approach 2:
The control device continuously receives feedback about facility-wide power consumption and automatically responds by adjusting motor speeds. This closed-loop control eliminates the need for manual intervention, as the system autonomously detects power peaks and implements corrective speed reductions to maintain operation within power constraints
Data Source
AI summary
Disclosed is an electric power consumption control system for a factory where a plurality of machine tools (Mi, Mp1, Mp2) are installed. A machine tool (Mi) is provided with a control device (10) whereby either the rotational acceleration/deceleration (Pi) for the motor for the machine tool and/or the rotational speed (Si) thereof is controlled on the basis of information regarding electric power consumption (Wt) in the factory so that electric power consumption will not exceed a specified value (We). This electric power consumption control system is also provided with electric power detection instruments (11, 12, 13) and an electric power monitoring instrument (20) which measure the electric power consumption of all the machine tools installed in the factory, thereby obtaining the electric power consumption of the factory, and provide information regarding the electric power consumption to the control device of the machine tool equipped with the control device.