Parking Brake Command Interruption for Rapid Reversal
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Solution Overview
Problem
Modern electromechanical parking brakes often result in wasted time due to incorrect or unintentional commands, as they do not allow for quick cancellation of commands once initiated, leading to prolonged brake application or release processes.
Innovation Solution
The motor control unit of the parking brake system is designed to interrupt an ongoing brake command immediately when a subsequent command is received, allowing for rapid correction of brake application or release actions, especially when the vehicle is stationary or at low speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the brake application strategy is completed before a following command is considered, then the brake command is executed reliably, but time is wasted when incorrect commands are given
Solution Approach 1:
The system dynamically adjusts the command execution behavior based on the timing of subsequent commands. When a second command is received during the execution of a first command, the system interrupts the first command and executes the second command instead. This dynamic response allows the system to correct incorrect commands quickly while maintaining reliable execution when commands are intentional.
Solution Approach 2:
The system monitors the timing of controller actions in real-time and uses this feedback to determine whether to complete or interrupt the current brake command. By detecting when a second action occurs during the execution of a first action, the system can identify and correct incorrect commands, providing a feedback mechanism that prevents time wastage while preserving execution reliability.
2Device complexity
If the brake command is completed before cancellation, then the brake system operates with simple control logic, but energy is wasted and brake wear increases
Solution Approach 1:
The control logic dynamically adapts its behavior based on the timing of controller inputs. When a second command is received during the execution of a first command, the system switches to an interruption mode that cancels the first command and executes the second command instead. This dynamic approach prevents unnecessary energy consumption and brake wear while maintaining relatively simple control logic.
Solution Approach 2:
When a second command is detected during the execution of a first command, the system skips the completion of the first command and rushes to execute the second command instead. This skipping mechanism prevents wasted energy and brake wear by immediately canceling incorrect commands, while the overall control logic remains simple and easy to implement.
3Device complexity
If the brake command is completed before cancellation, then the control system is simple, but user convenience is reduced due to inability to quickly correct commands
Solution Approach 1:
The control system dynamically responds to user inputs by detecting when a second command is received during the execution of a first command. This dynamic behavior allows users to quickly correct incorrect commands by simply pressing the controller again, significantly improving ease of operation while maintaining relatively simple control system architecture.
Solution Approach 2:
The system implements a skipping mechanism that allows users to cancel incorrect commands by pressing the controller again. When a second command is detected, the system skips the completion of the first command and immediately executes the second command, providing quick command correction capability while keeping the control system simple and user-friendly.
Data Source
AI summary
An electromechanical parking brake command is aborted with no predefined plan being completed if the driver initiates an opposite command when the vehicle is stationary. The plan normally implemented for the second command is itself shortened as a result. The brake is therefore quickly returned to its original state, and a command sent inadvertently is corrected quickly.