Brake Motor Force Control Under High-Temperature Fade Risk
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Solution Overview
Problem
Braking systems in vehicles experience performance degradation due to high temperatures, leading to insufficient brake force and potential loss of clamping ability, which compromises driving safety, especially in complex road conditions.
Innovation Solution
A method and device that control brake force output based on temperature and driving data, including predicting target temperature values and adjusting brake force accordingly to prevent brake fade, using temperature sensors and driving environment data to ensure safe braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the brake motor continuously outputs brake force during braking, then the braking effectiveness is maintained, but the temperature of the brake motor increases causing brake fade and performance degradation
Solution Approach 1:
The system performs preliminary temperature prediction before brake fade occurs by using a temperature prediction model to forecast future temperature values based on current temperature data and driving conditions. This allows the controller to proactively adjust brake force before performance degradation happens, maintaining reliability while preventing excessive temperature rise.
Solution Approach 2:
The system implements a feedback mechanism where the actual temperature data from temperature sensors is continuously fed back to the controller, which compares it with predicted temperature values. Based on this feedback and the difference between actual and predicted temperatures, the controller dynamically adjusts the brake force output to maintain optimal braking performance while preventing overheating.
2Temperature
If the brake force is reduced to lower temperature, then the temperature rise is prevented, but the braking performance and deceleration capability deteriorate
Solution Approach 1:
The system dynamically adjusts brake force based on real-time temperature conditions and predicted temperature trends rather than using a fixed reduction strategy. The controller continuously modifies the brake force output to maintain the brake motor temperature within a safe operating range while maximizing braking performance at each moment, achieving an optimal balance between temperature control and braking capability.
Solution Approach 2:
The system changes the operating parameters of the brake motor by adjusting the brake force output based on temperature prediction and actual temperature measurements. By dynamically modifying the brake force parameter within acceptable ranges, the system prevents temperature exceedance while maintaining sufficient braking performance for safe operation.
3Temperature
If the brake force is completely stopped to cool the brake motor, then the temperature is reduced, but the vehicle cannot maintain safe deceleration especially in emergency situations
Solution Approach 1:
The system performs preliminary temperature prediction to identify when temperature rise trends indicate potential brake fade before it occurs. By predicting future temperature values based on current conditions, the system can proactively adjust brake force to prevent complete brake failure while maintaining sufficient deceleration capability for safety, especially in emergency braking scenarios.
Solution Approach 2:
The feedback mechanism continuously monitors actual temperature against predicted temperature and dynamically adjusts brake force accordingly. This ensures that the brake motor temperature is maintained within safe operating limits while preserving enough braking force to ensure vehicle safety and prevent complete loss of braking capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively prevents brake fade by dynamically adjusting brake force, ensuring safe braking performance even under high temperatures, thereby maintaining vehicle control and safety.
Implementation Method 1
vehicles generate a brake force through a braking system
Implementation Method 2
a radiation temperature prediction value of the temperature of the brake disc radiated to the brake motor
Data Source
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Figure 3
Figure 4~5
AI summary
A brake force control method includes: obtaining (S301) temperature data of a braking system of a vehicle and driving data of the vehicle during braking of the vehicle; and controlling (S302) a brake force output from a brake motor in the braking system according to the temperature data and the driving data, to ensure braking safety of the vehicle.