Motor Braking Control with Variable Time for Load Changes
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Solution Overview
Problem
Conventional motor controllers with a fixed braking time may fail to successfully brake a motor to stationary when the motor load changes from light to heavy.
Innovation Solution
A motor controller with a switch circuit, control circuit, and function pin that adjusts braking time based on motor load by recognizing specific signal patterns, allowing for variable braking times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed braking time is used in the motor controller, then the device complexity is reduced and ease of operation is improved, but the reliability deteriorates when motor load changes from light to heavy
Solution Approach 1:
The patent implements dynamic braking time adjustment by detecting motor load conditions and automatically modifying the braking duration. The control circuit monitors current draw and other load indicators during the braking phase, then adaptively extends or reduces braking time based on detected conditions, transforming a static fixed-time brake system into a dynamic load-responsive system that maintains reliability across varying loads.
Solution Approach 2:
The patent incorporates feedback mechanisms where the control circuit continuously monitors motor current, voltage, and braking progress. Based on this feedback information about actual load conditions, the system adjusts the braking time in real-time. This closed-loop feedback ensures that the braking duration is optimized for the current load state, preventing both premature stopping failures and excessive braking delays.
2Adaptability or versatility
If a fixed braking time is used in the motor controller, then the device complexity is reduced, but the adaptability deteriorates when motor load changes
Solution Approach 1:
The patent implements dynamic braking time adjustment by detecting motor load conditions and automatically modifying the braking duration. The control circuit monitors current draw and other load indicators during the braking phase, then adaptively extends or reduces braking time based on detected conditions, transforming a static fixed-time brake system into a dynamic load-responsive system that maintains reliability across varying loads.
Solution Approach 2:
The patent changes the braking time parameter dynamically based on detected load conditions. By monitoring electrical parameters such as current magnitude and rate of change during braking, the system modifies the braking duration parameter to match actual load requirements, enabling the same hardware to adapt to different load scenarios without requiring separate control circuits for each load type.
3Reliability
If the braking time is extended to handle heavy loads, then the reliability improves, but the loss of time increases for light load operations
Solution Approach 1:
The patent incorporates feedback mechanisms where the control circuit continuously monitors motor current, voltage, and braking progress. Based on this feedback information about actual load conditions, the system adjusts the braking time in real-time. This closed-loop feedback ensures that the braking duration is optimized for the current load state, preventing both premature stopping failures and excessive braking delays.
Solution Approach 2:
The patent changes the braking time parameter dynamically based on detected load conditions. By monitoring electrical parameters such as current magnitude and rate of change during braking, the system modifies the braking duration parameter to match actual load requirements, enabling the same hardware to adapt to different load scenarios without requiring separate control circuits for each load type.
Data Source
AI summary
A motor controller comprises a switch circuit, a control circuit, and a function pin. The switch circuit is coupled to a motor for driving the motor. The control circuit generates a plurality of control signals to control the switch circuit. The function pin is coupled to the control circuit for receiving a function signal. The function signal is configured to inform the motor controller to execute a braking function. The braking function enables a braking time to be a variable value.