Hall Sensor Pin Connection Correction for Motor Controllers
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Solution Overview
Problem
The assembly of Hall sensors and motor controllers in electric vehicles is challenging due to multiple pin connection modes, leading to irregular motor operation and potential damage when incorrect connections are used, especially for users without technical background.
Innovation Solution
An automatic correction method and motor driving device that utilize a pin connection combination table to sense and count changes in sensing results across various pin connection modes, identifying the correct mode through external interruptions and electrically coupling the Hall sensor and motor controller via the correct pin connection mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple pin connection modes are provided for Hall sensor and motor controller, then adaptability is improved, but reliability deteriorates due to incorrect connections causing irregular motor operation
Solution Approach 1:
The motor controller automatically tests different pin connection modes before normal operation to identify the correct configuration. This preliminary testing action prevents incorrect connections from causing motor damage, resolving the contradiction between adaptability and reliability.
Solution Approach 2:
The system performs self-diagnosis by automatically testing pin connections and identifying the correct mode without external intervention. The motor controller counts external interruptions from the Hall sensor to determine proper pin configuration, enabling the system to self-correct connection issues.
2Ease of operation
If automatic pin connection correction is implemented, then ease of operation is improved, but device complexity increases due to additional testing mechanisms
Solution Approach 1:
The motor controller performs multiple functions: normal motor control and automatic pin connection testing. By making the motor controller multi-functional, the patent avoids adding separate testing devices, thus improving ease of operation without proportionally increasing device complexity.
Solution Approach 2:
The system uses feedback from the Hall sensor's external interruptions to determine correct pin connections. The motor controller counts interruption signals during testing phases and uses this feedback to identify the proper connection mode, enabling automatic correction without complex manual procedures.
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
Ensures accurate pin connection between the Hall sensor and motor controller, preventing motor damage by automatically correcting the pin connection mode and ensuring smooth motor operation.
Implementation Method 1
The Hall sensor has three connection pins connected to a motor controller... The Hall sensor and the motor controller have a plurality of pin connection modes... The motor driven by the motor controller is sensed via the Hall sensor to generate a plurality of sensing results
Data Source
AI summary
An automatic correction method for a pin connection and a motor driving device are provided. The automatic correction method includes: sensing a driven motor to generate a plurality of sensing results corresponding to a plurality of pin connection modes between a Hall sensor and a motor controller, and counting a number of changes of the plurality of sensing results to obtain a plurality of numbers of external interruptions corresponding to the plurality of pin connection modes; obtaining a correct pin connection mode in the plurality of pin connection modes according to the plurality of numbers of external interruptions; and operating the Hall sensor and the motor controller to be electrically coupled via the correct pin connection mode.