Parking Motor Closed-Loop Control for Fast Disturbance Response
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current parking control systems suffer from long delays and poor precision, especially when road surface disturbances occur, leading to issues like oversteering, vehicle pitching, and excessive gear changes.
Innovation Solution
A closed-loop control system involving a main control unit, motor control unit, and motor sensor, with a short control path to quickly adapt to road disturbances and improve precision by using high-precision motor rotation information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a traditional parking control system is used with main control unit directly controlling the motor, then the control path is long and control delay is large, but the system structure is simple, but parking control precision is poor and response to road disturbances is slow
Solution Approach 1:
The control system is segmented into two independent control loops: an outer control loop (main control unit to motor control unit) and an inner control loop (motor control unit to motor to motor sensor). This segmentation allows the inner loop to operate independently with high-frequency feedback, reducing control delay without significantly increasing overall system complexity.
Solution Approach 2:
The motor control unit acts as an intermediary component between the main control unit and the motor. It receives control instructions from the main control unit and implements precise motor control based on real-time feedback from the motor sensor, effectively bridging the control gap and reducing overall control delay.
2Speed
If the control path is shortened to reduce delay, then response to road disturbances improves, but the system becomes more complex with additional control units and sensors
Solution Approach 1:
The motor control unit combines multiple functions: it receives control instructions from the main control unit, processes real-time motor position feedback from the motor sensor, executes closed-loop control algorithms, and drives the motor. This functional integration achieves fast response without proportionally increasing system complexity.
Solution Approach 2:
A closed-loop feedback mechanism is implemented where the motor sensor continuously monitors motor position and sends real-time data back to the motor control unit. This feedback enables the system to quickly detect and correct deviations caused by road disturbances, improving response speed while maintaining manageable system complexity through efficient feedback utilization.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A parking control system (300), method, and apparatus (800 and 900), an electronic device, and a storage medium are disclosed. In the parking control system (300), a main control unit (201) sends target wheel rotation information to a motor control unit (202) during parking of a vehicle. The motor control unit (202) determines a drive electrical signal corresponding to the target wheel rotation information, sends the drive electrical signal to a motor (203), and corrects a subsequent drive electrical signal based on motor rotation information collected by a motor sensor (205).