ECM Driver Controller Parameter Storage Strategy
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Solution Overview
Problem
Existing electrically commutated motor control systems face inefficiencies due to frequent writing of control parameters into storage devices, leading to reduced operational lifespan, increased resource usage, and power consumption, especially during abnormal voltage, current, or speed conditions.
Innovation Solution
The system reduces the number of writes to the storage device by storing control parameters only when specific events occur, such as voltage, current, or speed abnormalities, using a controller that stops generating the commutated signal and utilizes an energy storage device to maintain internal voltage during low supply conditions, allowing for controlled parameter storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control parameters are periodically written into the storage device, then the control parameters are updated, but the operational lifespan of the storage device is reduced and power consumption is increased
Solution Approach 1:
The patent implements periodic writing of control parameters to the storage device at predetermined intervals. This periodic action ensures that control parameters are updated reliably while avoiding excessive writing operations that would reduce storage device lifespan and increase power consumption.
Solution Approach 2:
The patent changes the writing strategy from continuous or frequent writing to interval-based writing with predetermined periods. This parameter change in the writing frequency directly reduces the number of write operations, thereby extending storage device lifespan and reducing power consumption while maintaining control parameter updates.
2Reliability
If control parameters are periodically written into the storage device, then the control parameters are updated, but the controller resources are occupied
Solution Approach 1:
By implementing periodic writing at predetermined intervals, the controller resources are utilized efficiently without being continuously occupied. This periodic approach reduces the burden on controller resources while ensuring control parameters are updated reliably at appropriate intervals.
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
This approach extends the lifespan of the storage device, reduces resource and power consumption, and ensures reliable parameter storage during abnormal conditions, enhancing overall motor control efficiency.
Implementation Method 1
utilizes an energy storage device to maintain internal voltage during low supply conditions
Data Source
AI summary
An electronically commutated motor driving module for driving a motor includes a voltage detector, an electronically commutated motor driver, a current detector, a voltage converter, and a controller. The voltage detector detects supply voltage to generate a voltage detection signal. The electronically commutated motor driver is supplied by the supply voltage to generate, according to an electronically commutated signal, an operating current for driving the motor. The current detector detects the operating current to generate a current detection signal. The voltage converter converts the supply voltage into an internal voltage. The controller is supplied by the internal voltage and generates the electronically commutated signal according to a plurality of control parameters. When the controller determines that a specific event has happened according to the control parameters, the controller stops generating the electronically commutated signal and then stores the control parameters.