Roller Shutter Actuator Torque Analysis for Position Calibration
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Solution Overview
Problem
Existing roller shutter actuators lack efficient automatic functionality for determining intermediate and extreme stop positions, adapting to varying attachment links, and managing movement without user intervention, leading to suboptimal operation and potential device stress.
Innovation Solution
A method and actuator system that measures torque variations during movement, determines a reference position, and automatically adjusts the actuator's operation, including speed changes and stop positions, using hardware and software components like torque sensors and calculation means, allowing for automatic operation and adaptation to different attachment types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic determination of reference position is implemented, then ease of operation is improved, but device complexity increases due to torque measurement and analysis means
Solution Approach 1:
The actuator automatically determines its own reference position by analyzing torque variations during movement, without requiring external intervention or additional positioning devices. The system performs self-diagnosis and self-calibration through the torque measurement means and calculation means already present in the actuator.
Solution Approach 2:
The actuator uses torque measurement means to continuously monitor torque variations during movement, and the calculation means analyzes this feedback information to automatically determine the reference position. This closed-loop feedback mechanism enables automatic operation while utilizing existing actuator components.
2Measurement precision
If torque measurement means is added to determine reference position, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The torque measurement means is integrated into the actuator's existing structure, combining the measurement function with the actuator's core components. The calculation means utilizes the torque data alongside other actuator parameters to determine position, merging multiple functions into a unified system that avoids adding separate dedicated positioning devices.
Solution Approach 2:
The torque measurement means serves multiple purposes: it measures torque for position determination, monitors load conditions, and provides data for control adjustments. This multi-functionality allows the actuator to use a single measurement system for various control objectives, reducing the need for additional specialized sensors.
3Productivity
If automatic retiming and position setting are implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The actuator performs preliminary determination of the reference position during initial operation or setup phases, storing this information for subsequent automatic operations. This preliminary action enables faster automated control in normal operation, as the system already has reference data to work with rather than calculating everything in real-time.
Solution Approach 2:
The actuator automatically performs retiming and position setting using its own torque measurement and calculation capabilities, without requiring external calibration equipment or user intervention. The system self-adjusts its operation parameters based on real-time torque analysis, enabling autonomous optimization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables reliable, automatic, and user-transparent operation of roller shutters, improving positioning accuracy, reducing device stress, and enhancing user experience through adaptive control and efficient movement management.
Implementation Method 1
a torque measurement means, a torque analysis means and calculation means
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3b
AI summary
Method of operation of an actuator used to operate a rollable mobile element used for sealing, closing or protection against the sun, the mobile element comprising slats which can be stacked up and which are joined together by perforated portions, the actuator being provided with a means of measuring a parameter associated with the movement of the mobile element, the method comprising the following steps: - analysing the variations in the parameter over the course of the movement of the mobile element; - determining a reference position from this analysis; said method furthermore comprising a step of using this reference position in executing an action of resetting a means of determining the position of the mobile element used for sealing, closing or protection against the sun and/or in executing an action of defining a position of the mobile element that gives rise to a change in speed of the actuator.