Motor Controller Direction Control via Resistor Adjustment
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Solution Overview
Problem
Conventional motor controllers using Hall sensors can only maintain a single output mode for driving motors, limiting their ability to change the driving direction of the motor.
Innovation Solution
A motor controller design incorporating a driving circuit, control unit, operational amplifier, comparator, inverter, multiplexer, first resistor, and second resistor mounted on a printed circuit board, allowing resistance adjustments to change the driving direction by modifying the Hall sensor output signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the circuit structure of the motor controller is fixed, then the manufacturing cost is reduced, but the adaptability to change motor driving direction is limited
Solution Approach 1:
The patent applies parameter changes by modifying the resistance values of existing resistors (R1, R2, R3, R4) to alter the voltage division ratios in the Hall sensor signal processing circuit. By changing these resistance parameters, the comparator reference voltages are adjusted, enabling the same fixed circuit structure to produce different output signals that control motor rotation in different directions. This resolves the contradiction by achieving adaptability through parameter adjustment rather than structural redesign.
2Adaptability or versatility
If the circuit structure is redesigned to change motor driving direction, then the adaptability is improved, but the manufacturing cost and complexity increase
Solution Approach 1:
The patent implements universality by designing a single printed circuit board layout that can control motors in multiple directions through resistor value adjustments rather than requiring different board designs for different directions. The same physical circuit structure serves multiple functions (controlling clockwise and counter-clockwise rotation) by simply changing resistor parameters, eliminating the need for multiple specialized circuit boards and reducing manufacturing complexity.
3Adaptability or versatility
If multiple circuit boards are used for different driving directions, then the adaptability is improved, but the device complexity and cost increase
Solution Approach 1:
The patent merges the functionality of multiple direction-specific circuit boards into a single universal circuit board. By combining the signal processing paths for different rotation directions into one integrated circuit design with adjustable resistors, the system eliminates the need for separate circuit boards for clockwise and counter-clockwise control. This consolidation reduces the quantity of circuit boards required while maintaining full adaptability for multi-directional motor control.
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 flexible direction control of the motor without requiring re-design of the printed circuit board, reducing costs through shared boards and enhancing adaptability.
Implementation Method 1
a Hall sensor that is used to measure the magnitude of a magnetic field based on the Hall effect
Data Source
AI summary
A motor controller used for driving a motor is provided. The motor controller includes a driving circuit, a control unit, an operational amplifier, a comparator, an inverter, a multiplexer, a first resistor, and a second resistor. The first and second resistors are mounted on a printed circuit board. By changing the resistance of the first resistor and the resistance of the second resistor, it is capable of changing the driving direction of the motor.