Motor Control Module Direct Communication for Low-Delay Torque Response
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Solution Overview
Problem
The challenge in assisted and autonomous driving is the control delay from sensing the vehicle's surroundings to controlling its path, leading to potential collisions.
Innovation Solution
A controller in the motor control module directly communicates with assisted or autonomous driving controllers, receiving speed adjustment signals to control inverter circuits, thereby adjusting motor currents to reduce control delay and improve safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the controller directly communicates with the assisted driving controller or autonomous driving controller to receive speed adjustment signals, then the control delay is reduced, but the device complexity increases
Solution Approach 1:
The patent merges the motor control module with the assisted driving or autonomous driving controller by establishing direct communication between them. The controller in the motor control module receives speed adjustment signals directly from the assisted driving controller or autonomous driving controller, eliminating intermediate communication steps and reducing control delay.
Solution Approach 2:
The controller is pre-configured with direct communication channels to the assisted driving controller or autonomous driving controller. This preliminary setup ensures that when emergency situations arise, the speed adjustment signals can be transmitted and executed immediately without requiring additional communication protocol establishment or intermediate processing.
2Speed
If the controller quickly adjusts the output current to the motor based on speed adjustment signals, then the response speed is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent implements dynamic current adjustment where the controller continuously modifies the output current to the motor based on real-time speed adjustment signals. The inverter circuit dynamically changes the frequency and amplitude of the output current, enabling the motor to rapidly respond to speed changes while maintaining precise control through closed-loop feedback mechanisms.
Solution Approach 2:
The controller changes multiple parameters simultaneously including current amplitude, frequency, and phase angle to achieve rapid motor response. By adjusting these electrical parameters through the inverter circuit, the system achieves fast response speed while maintaining manufacturing precision through coordinated parameter modification rather than relying on a single parameter change.
Data Source
AI summary
A controller of an electric drive system, a motor control method, and a related device are disclosed. A communication end of the controller is coupled to an assisted driving controller or an autonomous driving controller. The controller receives a target speed and a target acceleration from the assisted driving controller or the autonomous driving controller. An output end of the controller is coupled to an inverter circuit in the electric drive system. In response to a speed adjustment signal, the controller controls the inverter circuit to adjust a current output to a first motor.