Liquid Ejection Power Control via Motor Current Limit Switching
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Solution Overview
Problem
Existing liquid ejection apparatuses face challenges in managing power consumption across multiple power consumption units, leading to difficulties in keeping the overall power consumption within an appropriate range, especially when multiple units operate concurrently.
Innovation Solution
A liquid ejection apparatus with a controller unit that switches between two modes of current upper limit values for motors and other power consumption units, allowing for flexible control of power consumption based on operational needs, thereby maintaining power within an appropriate range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the power supply capacity is reduced to decrease apparatus size and improve environmental compatibility, then the apparatus becomes more compact and environmentally friendly, but the ability to supply sufficient power to multiple concurrent units is compromised
Solution Approach 1:
The system employs dynamic power management where the motor's current upper limit value is not fixed but is continuously adjusted based on real-time operational states of other power consumption units. This dynamic adjustment allows the power supply capacity to be optimized for each operating scenario, enabling the use of a smaller power source that can still meet the total power requirements of multiple units when they operate concurrently, thus reducing apparatus size while maintaining sufficient power supply capability.
Solution Approach 2:
The control unit changes the parameter of current upper limit value for the motor based on the operational states of other power consumption units. By adjusting this parameter dynamically, the system ensures that the total power consumption remains within the reduced power supply capacity, allowing the apparatus to use a smaller, more environmentally friendly power source while still supporting multiple concurrent operations.
Data Source
AI summary
A liquid ejection apparatus and a liquid ejection apparatus control method capable of keeping the power consumption of the liquid ejection apparatus within an appropriate range. To this end, control is performed such that a current upper limit value for a conveyor motor is switched in a state where operations of other power consumption units are restricted.