Motor Drive Controller Speed Adjustment via Button Press Duration
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Solution Overview
Problem
Existing motor drive controllers face challenges in easily changing the target rotation speed of motors due to limited flexibility in input command signals, requiring complex configurations and a narrow range of speed settings.
Innovation Solution
A motor drive controller with a control circuit unit that generates a target rotation speed signal based on a step command signal and predetermined setting information, allowing for easy adjustment of motor speed through a simplified command signal input, utilizing both step command signals and rotation speed command signals to provide a high degree of freedom in setting the target rotation speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a command signal such as a clock signal or PWM signal is used to designate target rotation speed, then the motor can operate at a target rotation speed, but the configuration for inputting the command signal is not easily configured and requires complex setup
Solution Approach 1:
The patent changes the parameter of command signal input from complex PWM or clock signals to simple button press operations. The control unit detects button press duration and converts it into target rotation speed, transforming the interaction parameter from electrical signal characteristics to temporal mechanical input characteristics, thereby simplifying user operation.
Solution Approach 2:
The control unit automatically determines target rotation speed based on button press duration without requiring external command signal configuration. The system self-adapts by interpreting the duration of button presses and autonomously setting appropriate rotation speeds, eliminating the need for users to configure complex signal parameters.
2Adaptability or versatility
If a high/low-combined signal is used to easily change target rotation speed, then the target rotation speed can be changed in a simple method, but the number of signal patterns is relatively small and the range of target rotation speed is narrow
Solution Approach 1:
The patent introduces dynamic adaptability by making the target rotation speed dependent on the duration of button presses rather than fixed signal patterns. The control unit dynamically adjusts the rotation speed based on how long the button is held, creating a continuous range of speed settings from short presses (lower speeds) to long presses (higher speeds), thereby expanding adaptability while maintaining operational simplicity.
Data Source
AI summary
A motor drive controller includes: a control circuit unit configured to output a drive control signal for driving a motor in response to a command signal externally input to the control circuit unit; and a motor driving unit configured to output a drive signal to the motor based on the drive control signal output from the control circuit unit. The control circuit unit is provided with: a speed setting unit configured to generate a target rotation speed signal corresponding to a target rotation speed based on a command step determined in response to a step command signal and predetermined setting information when the step command signal is input as the command signal; and a drive control signal generating unit configured to generate and output the drive control signal based on the target rotation speed signal.