Electric Brake System Dynamic Control Formula
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Solution Overview
Problem
Conventional electric brake devices face a trade-off between operation sound and responsiveness, where reducing noise leads to increased braking distance and decreased brake feeling, and there is a need to minimize operation sound and power consumption without affecting vehicle movement.
Innovation Solution
An electric brake system that adjusts responsiveness based on determined requirements using a response requirement determination module and control modification module, which applies different control operation formulas depending on braking needs and vehicle conditions, allowing for reduced operation sound and power consumption without impacting vehicle movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the operation speed of the electric brake device is lowered to reduce operation sound, then the operation sound is reduced, but the responsiveness is lowered leading to increased braking distance
Solution Approach 1:
The patent applies dynamics by making the control operation formula adjustable rather than fixed. The control operation module dynamically changes the control operation formula based on vehicle speed and other conditions, allowing the system to optimize between noise reduction and responsiveness in different operating scenarios. This is achieved through a control operation formula change determination module that selects appropriate formulas from multiple candidates.
Solution Approach 2:
The patent changes control parameters (the control operation formula) to resolve the contradiction. By having multiple control operation formulas with different characteristics and selectively applying them based on vehicle conditions, the system can achieve low noise at appropriate speeds while maintaining responsiveness when needed. The control operation formula includes parameters that can be adjusted to balance noise and performance.
2Object-affected harmful factors
If the operation speed is lowered to reduce operation sound, then the operation sound is reduced, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the control operation formula based on real-time vehicle conditions, allowing it to optimize power consumption alongside noise reduction. The control operation formula change determination module evaluates current conditions and selects formulas that balance both noise and energy efficiency.
Solution Approach 2:
By changing control parameters through formula selection, the system can achieve noise reduction without excessive power consumption. Different formulas have different efficiency characteristics, and the selection mechanism ensures optimal power usage for the current operating conditions while still reducing noise compared to conventional fixed-speed operation.
3Device complexity
If a fixed control operation formula is used to simplify the control system, then the device complexity is reduced, but the ability to adapt to different vehicle conditions is limited
Solution Approach 1:
The control system is made dynamic through the formula selection mechanism. Rather than being completely fixed or completely complex, the system has a modular structure where multiple predefined formulas can be selected based on conditions. This provides adaptability without requiring an overly complex real-time optimization system.
Solution Approach 2:
Multiple control operation formulas are prepared in advance for different operating conditions. The control operation formula change determination module selects the appropriate pre-prepared formula based on current vehicle speed and conditions, avoiding the need for complex real-time calculation while maintaining adaptability. This preliminary preparation of multiple formulas balances complexity and versatility.
Data Source
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AI summary
Provided is an electric brake system that changes responsiveness depending on responsiveness required for an electric brake device, thereby enabling operation sound and power consumption to be reduced without influencing movement of a vehicle. The electric brake system includes one or more electric brake device (3) each having a control operation module (12) for performing follow-up control for a target braking force. The electric brake system includes a response requirement determination module (14) for determining responsiveness required for the brake actuator (4) from one or both of a braking requirement and the vehicle travelling condition. The braking requirement is outputted from a brake operation member or a vehicle-stable-travelling control system. The electric brake system includes a control modification module (15) for changing a control operation formula to be used for follow-up control by the module (12), depending on responsiveness determined by the module (14).