Fabric Rack Motor Control Using Current Feedback
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Solution Overview
Problem
Existing fabric treating apparatuses face issues with effectively controlling motors for moving fabrics, leading to potential motor trouble or restriction, which can result in inefficient operation and potential overload.
Innovation Solution
A fabric treating apparatus with a control unit that senses the motor's electric current and adjusts its rotational speed to a target number of rotations per minute, using a motor coupled to a device moving a rack within the treating space, and includes a heating unit for supplying steam or hot air, preventing motor overload by regulating the rotational power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motor is driven at high speed to move the fabric quickly, then the productivity is improved, but the motor may become overloaded and experience trouble
Solution Approach 1:
The control unit continuously monitors the motor's electric current consumption and uses this feedback to dynamically adjust the motor speed. When the current exceeds a predetermined threshold, the control unit reduces the rotation speed to prevent overload, thereby maintaining both high productivity and motor reliability through real-time adaptive control
Solution Approach 2:
The motor rotation speed is made dynamic rather than fixed. The control unit adjusts the target rotation speed based on real-time electric current conditions, allowing the system to optimize between speed and safety. This dynamic adjustment prevents motor trouble while maintaining efficient operation under varying load conditions
2Loss of time
If the motor speed is increased to reduce treatment time, then the loss of time is reduced, but the motor current increases causing potential motor restriction
Solution Approach 1:
The control unit monitors electric current in real-time and adjusts motor speed accordingly. This feedback mechanism allows the system to maintain high speeds for efficiency while automatically reducing speed when current thresholds are exceeded, preventing motor restriction and ensuring reliable operation
Solution Approach 2:
The target rotation speed parameter is dynamically changed based on electric current conditions. The control unit modifies this parameter in real-time, increasing speed to reduce treatment time when conditions permit, and decreasing speed when current limits are approached, thus optimizing both time efficiency and motor reliability
Data Source
AI summary
The present invention relates to a fabric treating apparatus and method for controlling the same. A fabric treating apparatus according to the present invention includes a treating space within which fabrics are treated; a heating unit configured to supply heated air, or steam, or heated air and steam to the treating chamber; a motor to generate a rotational power; a device receiving the rotational power from the motor, the device configured to move a rack disposed within the treating space; and a control unit adapted to: control the motor according to a sensed electric current of the motor, and drive the motor to rotate at a speed defined by a target number of rotations per minute.