Solenoid Control via Unique Identifier Lookup Tables
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Solution Overview
Problem
Current vehicle assembly systems face inefficiencies in managing and integrating solenoids within transmission systems, particularly in establishing accurate relationships between input current and output pressure, which affects the operability and testing of transmissions and vehicles.
Innovation Solution
A method involving unique identifiers for solenoids, associated lookup tables, and a transmission control module that stores and uses this data to control output pressure based on input current, ensuring accurate assembly and operation of transmissions and vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional assembly methods are used without unique identifiers and lookup tables, then the assembly process is simpler, but the accuracy of matching solenoids with their corresponding control data is poor
Solution Approach 1:
The patent applies preliminary action by pre-marking solenoids with unique identifiers before assembly and pre-preparing lookup tables with control data associated with each identifier. This ensures that when assembly occurs, the correct control data is already matched to the correct solenoid, eliminating matching errors without requiring complex real-time verification systems during assembly.
Solution Approach 2:
The patent introduces unique identifiers as an intermediary element that bridges the solenoid physical component and its corresponding control data in the lookup table. This intermediary enables accurate matching without direct complex interactions between the solenoid and control system, simplifying the overall system while improving precision.
2Productivity
If manual testing and flagging procedures are used, then the system requires less automated infrastructure, but the productivity and efficiency of transmission testing are reduced
Solution Approach 1:
The patent implements feedback by having the transmission control module automatically read the unique identifier from the assembled solenoid, retrieve the corresponding lookup table, and use it to control solenoid operation during testing. The system automatically flags transmissions based on test results, creating a closed-loop feedback system that improves productivity without requiring extensive manual intervention.
Solution Approach 2:
The system applies self-service by enabling the transmission control module to autonomously manage the entire testing process - reading identifiers, selecting appropriate control data, executing tests, and flagging results. This automation reduces the need for manual testing infrastructure and personnel while significantly improving testing efficiency.
3Reliability
If generic control data is used for all solenoids, then the data management system is simpler, but the reliability of solenoid operation varies due to individual solenoid characteristics
Solution Approach 1:
The patent applies local quality by creating individualized lookup tables for each solenoid type or individual solenoid, containing specific control data tailored to that solenoid's characteristics. This ensures each solenoid receives precisely matched control data rather than generic data, improving operational reliability while the data is organized in a manageable structured format.
Solution Approach 2:
The patent segments the control data into separate lookup tables, each associated with a specific solenoid identifier. This segmentation allows the system to manage multiple specialized data sets independently, improving solenoid reliability through precise matching while keeping the overall data management system organized and scalable.
Data Source
AI summary
A method includes: receiving M solenoids, each marked with a unique one of M identifiers, where M is an integer greater than one; receiving M lookup tables associated with respective ones of the M identifiers, wherein each of the M lookup tables establishes a relationship between input current and output pressure for only one of the M solenoids; assembling a transmission with a selected one of the M solenoids; selecting one of the M lookup tables based on one of the M identifiers marked on the selected one of the M solenoids; storing the selected one of the M lookup tables in memory of a transmission control module of a vehicle that is assembled with the transmission; and controlling output pressure of the selected one of the M solenoids based on the selected one of the M lookup tables and the input current using the transmission control module.