Flexible Display Panel Motion Control for Stage-Based Thrust Matching
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Solution Overview
Problem
Existing display technologies face issues with insufficient driving force and uneven thrust distribution during the movement of flexible display panels, particularly in stages requiring different movement strokes.
Innovation Solution
A control device adjusts the operation rate of a power device, such as a motor, by varying the rotation rate and power levels based on the movement stage of the flexible display panel, ensuring the motor operates at a higher rate when the first stage is completed to efficiently complete the entire movement stroke within a set duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the power device operates at a constant rate throughout the movement, then the control is simple, but the driving force is insufficient and thrust distribution is uneven
Solution Approach 1:
The patent applies dynamics by transitioning from constant-rate control to variable-rate control. The control device adjusts the operation rate of the power device based on movement stages: operating at a first rate during the first movement stage and switching to a second rate (higher than the first) during the second movement stage. This dynamic adjustment optimizes thrust distribution and ensures sufficient driving force throughout the movement process.
2Speed
If the power device operates at a higher rate throughout, then the movement speed increases, but the driving force becomes insufficient during the first movement stage
Solution Approach 1:
The patent applies segmentation by dividing the movement process into two distinct movement stages with different operational requirements. The control device segments the control strategy: using a first operation rate suitable for the first movement stage (where higher driving force is needed) and a second operation rate for the second movement stage (where higher speed is acceptable). This segmentation allows optimization of both force and speed at different phases.
Solution Approach 2:
The patent applies periodic action by implementing alternating operation rates corresponding to different movement stages. The power device operates periodically at different rates: the first rate during the first stage and the second rate during the second stage. This periodic variation in operation rate ensures that driving force requirements are met during force-critical phases while maintaining high speed during less force-intensive phases.
3Force
If the power device operates at a lower rate throughout, then the driving force is sufficient, but the movement duration exceeds the set duration
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the operation rate parameter based on movement progress. The control device changes the operation rate from the first rate to the second rate (which is higher) when transitioning between movement stages. This parameter change ensures that sufficient driving force is provided during the first stage while reducing overall movement duration through the higher second rate in the second stage.
Data Source
AI summary
A display apparatus, includes: a flexible display panel; a power device, connected to the flexible display panel, where the power device drives the flexible display panel to move in response to a driving signal; and a control device, connected to the power device, where the control device is used to control the power device to operate at a first rate in a first movement stage of the flexible display panel, and control the power device to operate at a second rate in a second movement stage of the flexible display panel, and the second rate is greater than the first rate.