Electronic Parking Brake Mode Control for Front and Rear Wheels
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Solution Overview
Problem
Conventional electronic parking brake systems fail to efficiently operate electronic front-wheel and rear-wheel parking brakes, especially during emergency situations or when the braking system fails, leading to inadequate braking performance.
Innovation Solution
An electronic parking brake system with a controller that receives operation mode selection information from the driver, allowing for independent or simultaneous operation of front-wheel and rear-wheel parking brakes, utilizing multiple motor driving devices and wiring harness connection information to ensure efficient operation based on selected modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional electronic parking brake system operates only rear-wheel parking brakes, then the device complexity is reduced, but the braking performance and reliability deteriorate during emergency situations or system failures
Solution Approach 1:
The parking brake system is segmented into independent front-wheel and rear-wheel parking brake units, each with its own motor driving device. This allows selective operation of front, rear, or both parking brakes based on operational mode selection information, enabling improved reliability during emergencies while maintaining manageable system complexity through modular architecture
Solution Approach 2:
The controller is designed with multi-functionality to handle different operational modes (first operation mode for simultaneous front and rear operation, second operation mode for front only, third operation mode for rear only). The motor driving device can universally drive any combination of front and rear parking brake motors based on received operational mode selection information, providing adaptive braking performance without requiring separate dedicated systems for each scenario
2Adaptability or versatility
If the system provides multiple operation modes for selective braking, then the adaptability improves, but the ease of operation deteriorates due to complex mode selection
Solution Approach 1:
The controller provides universal adaptability by accepting operational mode selection information that can specify different braking configurations (front only, rear only, or both). The motor driving device universally handles all mode types through a single integrated control architecture, allowing the system to adapt to various braking scenarios while presenting a unified, simple interface to the driver through the brake pedal
3Productivity
If the motor driving device controls multiple parking brake motors, then the productivity improves, but the device complexity increases
Solution Approach 1:
The motor driving device merges the control functions for front-wheel and rear-wheel parking brake motors into a single integrated unit. By combining multiple motor control capabilities in one device that responds to operational mode selection information, the system achieves improved braking response efficiency while avoiding the complexity of multiple separate control systems
Solution Approach 2:
The motor driving device is designed with universal multi-functionality to drive any combination of front and rear parking brake motors based on received operational mode selection information. This single device performs multiple functions (controlling front motors, controlling rear motors, or both simultaneously) thereby improving productivity without proportionally increasing device complexity
Data Source
AI summary
Disclosed is an electronic parking brake system including an electronic front-wheel parking brake provided on a front wheel side of a vehicle and configured to be operated by a front wheel motor, an electronic rear-wheel parking brake provided on a rear wheel side of the vehicle and configured to be operated by a rear wheel motor, a motor driving device configured to drive at least one of the front wheel motor and the rear wheel motor, and a controller electrically connected to the motor driving device, wherein the controller receives operation mode selection information in which an operation mode for operating at least one of the electronic front-wheel parking brake and the electronic rear-wheel parking brake is selected, and controls the motor driving device to operate at least one of the electronic front-wheel parking brake and the electronic rear-wheel parking brake in response to the operation mode of the received operation mode selection information.