Rotational Feedback Control for Variable Speed Within One Revolution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rotational systems lack precise control over angular velocity within a single revolution, limiting their ability to perform complex behaviors and applications that require variable speed profiles.
Innovation Solution
A control system comprising a sensor, controller, and propulsor that measures and adjusts the angular velocity of a rotating element by calculating compensation velocities based on differences between instructed and actual velocities, allowing for precise control of angular velocity within a single revolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If constant angular velocity is used within a single rotation, then the system operation is simple and reliable, but the system cannot achieve variable speed profiles required for complex behaviors
Solution Approach 1:
The patent implements a feedback control system where a sensor measures the actual angular position of the rotating element, the controller compares the measured position with the desired position, and the propulsor adjusts the angular velocity based on the position error. This closed-loop feedback enables variable speed profiles within a single rotation while maintaining system reliability through continuous correction.
Solution Approach 2:
The patent transitions from static constant angular velocity control to dynamic variable angular velocity control. The controller dynamically adjusts the angular velocity throughout the rotation cycle based on real-time position feedback, enabling complex behaviors such as asymmetric thrust generation and adaptive rotation patterns that require changing speed profiles within each rotation.
2Adaptability or versatility
If variable angular velocity within a single rotation is implemented, then complex behaviors can be achieved, but precise control becomes difficult due to mechanical uncertainties
Solution Approach 1:
The feedback control system continuously measures the actual angular position and uses this information to correct velocity deviations. By comparing desired versus actual position and adjusting the propulsor output accordingly, the system compensates for mechanical uncertainties and achieves precise angular velocity control throughout the rotation, enabling reliable execution of complex behaviors.
Solution Approach 2:
The patent replaces open-loop mechanical velocity control with a closed-loop electromechanical control system. The digital controller processes position feedback and generates corrected velocity commands to the propulsor, substituting purely mechanical constant-speed operation with an integrated sensor-controller-actuator system that achieves superior velocity precision despite mechanical variations.
3Measurement precision
If feedback control is implemented to correct velocity differences, then velocity precision improves, but the device complexity increases
Solution Approach 1:
The controller performs multiple functions within a single integrated unit: it generates desired velocity profiles, processes sensor feedback signals, calculates position errors, determines correction amounts, and outputs corrected velocity commands to the propulsor. This multi-functional integration achieves precise velocity control while minimizing the number of separate control components required in the system.
Data Source
AI summary
A rotational feedback control system, and method of using same, including a rotating element, a sensor and a digital controller. The system capable of monitoring, setting, and adjusting the inter-rotational angular velocity within a single revolution of the rotating element. The digital controller implementing a control system with control parameters based on angular position, nominal angular velocity and steering angular velocity.