Modular Seat Actuation Control via Distributed Bus Modules
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Solution Overview
Problem
Conventional seat control systems for aircraft seats are inefficient due to excessive wiring, slow system response, and lack of modularity, with failure of the main controller causing the entire system to malfunction.
Innovation Solution
A modular seat actuation control system utilizing a peer-to-peer network with interconnected control modules over a communication bus, where each module autonomously controls its associated seat device, processes status information, and broadcasts data packets with priority, allowing distributed processing and independent operation without a central controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a main controller directly controls all actuators with separate connection leads, then control reliability is maintained, but wiring complexity and system weight increase substantially
Solution Approach 1:
The control system is segmented into multiple independent actuator controllers, each responsible for specific actuators. This segmentation reduces wiring complexity by eliminating the need for separate connection leads from the main controller to each actuator, while maintaining control reliability through distributed control architecture.
Solution Approach 2:
An intermediary communication bus is introduced between the main controller and actuator controllers. This bus serves as a mediator that transmits control signals and status information, reducing the need for extensive point-to-point wiring while maintaining system reliability through structured communication protocols.
2Device complexity
If a common serial bus is used to connect main controller to actuator controllers, then wiring is reduced, but system response speed decreases due to centralized processing
Solution Approach 1:
Control functions are segmented and distributed to individual actuator controllers that operate autonomously. Each actuator controller can process commands and execute actuation independently without waiting for centralized processing, thereby maintaining fast response speed while using a common serial bus for coordination.
Solution Approach 2:
Actuator controllers are designed to be self-sufficient, with each controller capable of independently processing control commands and managing its associated actuators. This self-service capability eliminates the need for centralized processing delays, maintaining fast response speed while reducing wiring through the common bus architecture.
3Device complexity
If all processing is performed in the main controller, then system coordination is simplified, but system response time increases and modularity is reduced
Solution Approach 1:
Processing functions are segmented and distributed across multiple actuator controllers rather than centralized in the main controller. Each actuator controller handles local processing for its associated actuators, reducing system response time by eliminating communication delays while maintaining coordination through the common bus.
Solution Approach 2:
The control architecture transitions from static centralized processing to dynamic distributed processing. Actuator controllers can autonomously execute commands and adapt to local conditions in real-time, improving response speed while the common bus maintains system-wide coordination.
4Adaptability or versatility
If the main controller is located far from some actuators, then system layout flexibility is improved, but wiring length and system weight increase
Solution Approach 1:
The common serial bus acts as an intermediary communication medium that enables long-distance communication between the main controller and actuator controllers with minimal wiring. This reduces wiring weight compared to point-to-point connections while maintaining layout flexibility.
Solution Approach 2:
The system is segmented into distributed actuator controllers that can be positioned close to their associated actuators. This segmentation reduces the need for long wiring runs from a centralized controller, thereby reducing wiring weight while maintaining layout flexibility.
Data Source
AI summary
A seat actuation control system includes at least one seat having a plurality of seat devices and a plurality of control modules interconnected over a communication bus. Each module is associated with a corresponding seat control device and is configured to control its corresponding seat device. Each module includes a processor and a memory coupled to the processor and storing program instructions therein which include receiving a status packet from each of the other control modules over the communication bus, processing the status packet for updating the overall system status, and actuating the seat device based on the overall system status. The program instructions further include determining status of the corresponding seat device, generating a status packet including the status information, and broadcasting the status packet to the other modules over the communication bus.