Concealment Actuator Charging Profile for EMI-Limited Data Exchange
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Solution Overview
Problem
Data exchange between the embedded controller and the smart charger in electromechanical actuators is disrupted by electromagnetic disturbances during battery charging, particularly when high current flows through the power supply bus and high communication speed is required.
Innovation Solution
A method that controls the charging circuit to charge the battery with a low amperage for a predetermined duration, allowing data exchange on a high-speed communication bus, followed by a higher amperage charge to optimize charging efficiency while minimizing electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high current flows through the power supply bus to charge the rechargeable battery, then charging speed is improved, but electromagnetic disturbances increase disrupting data exchange
Solution Approach 1:
The patent implements periodic action by alternating between high-current charging phases and low-current data exchange phases. The controller periodically switches the charging current between a first level (for fast charging) and a second level (for data exchange), creating a time-multiplexed operation that resolves the contradiction between charging speed and electromagnetic interference.
Solution Approach 2:
The patent applies dynamics by making the charging current adjustable and time-dependent. The controller dynamically changes the charging current level based on the operational phase (data exchange vs. fast charging), transforming a static charging system into a dynamic one that adapts to different requirements.
2Speed
If high communication speed is used for data exchange, then data exchange efficiency is improved, but electromagnetic disturbances increase disrupting communication
Solution Approach 1:
The patent uses periodic action by scheduling high-speed communication during specific time windows when charging current is reduced to the second level. This time-multiplexed approach allows high-speed data exchange to occur periodically without continuous electromagnetic interference, resolving the contradiction between communication speed and interference levels.
Solution Approach 2:
The patent applies preliminary action by proactively reducing the charging current to the second level before initiating high-speed data exchange. This preparatory action ensures that electromagnetic disturbances are minimized in advance, creating favorable conditions for reliable high-speed communication.
3Duration of action of stationary object
If data exchange is performed during battery charging, then uninterrupted communication is achieved, but data exchange quality deteriorates due to electromagnetic interference
Solution Approach 1:
The patent implements periodic action by creating alternating phases of high-current charging and low-current data exchange. This periodic modulation ensures that data exchange occurs during low-interference windows, maintaining both continuity and quality simultaneously through time-multiplexed operation.
Solution Approach 2:
The patent maintains continuity of useful action by ensuring that data exchange can occur at any time during charging without interruption. The controller continuously monitors and manages the charging current to enable data exchange whenever needed, while maintaining overall charging progress through the alternating current levels.
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
Enables uninterrupted data exchange and efficient battery charging by reducing electromagnetic interference, ensuring reliable communication and faster charging once the predetermined duration is complete.
Implementation Method 1
the charging circuit is powered by the smart charger via the power supply bus to charge the rechargeable battery... interference caused by electromagnetic disturbances
Data Source
AI summary
This method for controlling an electromechanical actuator comprising an electronic control unit (15) and a battery (18), the electronic control unit comprising a controller (31), connected to a charger (44) and to a charging circuit (32) of the battery (18), comprises:detecting a charger connection to the electromechanical actuator,when a connection is detected, determining a supply profile with an amperage threshold value,controlling the charger, to supply the charging circuit with the power supply profile.It further comprises a first control step, for charging the battery with an amperage of a charging current equal to a first amperage, and a second control step, for charging the battery with an amperage of the charging current equal to a second amperage, strictly greater than the first amperage and less than or equal to the amperage threshold value.