Remote Actuation Voltage Regulation for Fail-Operational Motor Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional motor control systems in VTOL aircraft lack redundancy and efficiency, with DC to DC converters having fixed outputs and inefficient control algorithms that fail to adapt to varying power demands, leading to potential single points of failure.
Innovation Solution
A voltage regulation arrangement coupled with a power conversion system that adjusts regulated output voltage based on feedback measurements to achieve performance targets, using programmable voltage regulation to optimize efficiency and redundancy by varying modulation and commutation types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional DC to DC converters with fixed outputs are used, then hardware simplicity is maintained, but adaptability to varying power demands and efficiency are reduced
Solution Approach 1:
The patent implements dynamic voltage regulation by transitioning from fixed-output DC to DC converters to programmable voltage regulation arrangements that can dynamically adjust output voltage based on real-time motor demands. The control module modifies modulation depth and commutation strategies adaptively, allowing the power conversion system to respond to varying power requirements during different flight phases of VTOL aircraft.
Solution Approach 2:
The system changes operational parameters dynamically by adjusting voltage, current, and switching frequency based on motor load conditions. The control module varies modulation indices and commutation patterns to optimize efficiency across different operating points, transforming the fixed-parameter converter into a variable-parameter system that adapts to changing power demands.
2Reliability
If traditional power converters are used, then system simplicity is maintained, but redundancy and fail-operational capability are insufficient
Solution Approach 1:
The patent implements comprehensive feedback mechanisms where the control module continuously monitors motor current, voltage, and operational status. This feedback enables real-time detection of converter failures and automatic adjustment of control parameters to maintain safe operation. The system uses feedback to distinguish between normal operational variations and actual failures, enabling intelligent redundancy management.
Solution Approach 2:
The control module is designed with pre-programmed fail-operational algorithms that prepare the system for potential failures before they occur. Redundant control paths and emergency shutdown procedures are established in advance, allowing the system to maintain safe operation even when converter components fail. The system proactively manages risk by having backup control strategies ready.
3Loss of energy
If fixed parameter converters are used, then manufacturing simplicity is maintained, but efficiency across different motor torques and speeds is reduced
Solution Approach 1:
The patent employs dynamic control strategies that adjust switching frequency, modulation depth, and commutation timing based on real-time motor operating conditions. This dynamic approach minimizes switching losses at low speeds and optimizes current waveform quality at high speeds, reducing overall power conversion losses across the entire operating range of the VTOL aircraft motors.
Solution Approach 2:
The system optimizes efficiency by continuously adjusting conversion parameters including voltage ratio, switching frequency, and modulation index based on motor torque and speed demands. The control module selects optimal operational modes that minimize conduction and switching losses for each operating condition, transforming a static power conversion system into an adaptive efficiency-optimizing system.
Data Source
AI summary
Fly-by-wire vehicle systems and related actuation systems and operating methods are provided for actuating a remote flight control component. An exemplary system includes a voltage regulation arrangement between a power supply input node and a reference voltage node to provide a regulated output voltage at the reference voltage node, a power conversion arrangement between the reference voltage node and an output node to provide power from the reference voltage node to an electrical load coupled to the output node, and a control module coupled to the voltage regulation arrangement to provide a command to vary the regulated output voltage at the reference voltage node based on feedback measurement data pertaining to the electrical load.