Brake Disc Temperature Modeling for Residual Torque Estimation
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Solution Overview
Problem
Current systems lack effective methods for accurately measuring and estimating residual braking torque in vehicles, which is caused by unintended interactions between the brake pad and disc, leading to increased fuel consumption and brake wear.
Innovation Solution
A device and method that utilize temperature sensors and an N-dimensional calculation model to estimate residual braking torque by comparing the acquired temperature of the brake element to a calculated reference temperature, allowing for real-time monitoring and detection of minimum clearance between brake pads and discs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature sensors and N-dimensional calculation models are used to estimate residual braking torque, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical measurement systems with a thermal field-based estimation approach. By substituting direct mechanical torque measurement with temperature-based indirect measurement and mathematical modeling, the system achieves accurate residual braking torque estimation without requiring complex mechanical sensors or test benches.
Solution Approach 2:
The patent transforms the measurement parameter from direct mechanical torque to thermal parameters (temperature). By monitoring temperature changes in the brake disc and applying N-dimensional calculation models, the system converts thermal field data into accurate torque estimation, simplifying the measurement approach while maintaining precision.
2Productivity
If real-time temperature monitoring and N-dimensional calculation models are implemented, then productivity is improved, but use of energy increases
Solution Approach 1:
The system utilizes the existing thermal field generated during normal brake operation to perform measurements. The brake disc's own temperature, naturally produced during braking, serves as the measurement source for estimating residual braking torque, eliminating the need for external energy-intensive measurement devices.
Solution Approach 2:
The patent replaces energy-intensive mechanical measurement systems with low-power thermal sensing and computational modeling. Temperature sensors consume minimal energy compared to mechanical test benches or force sensors, while the N-dimensional calculation models process the thermal data efficiently to provide real-time torque estimation.
3Ease of operation
If thermal field-based estimation method is used, then ease of operation is improved, but measurement precision may worsen due to indirect measurement
Solution Approach 1:
The system continuously monitors temperature changes and uses N-dimensional calculation models to calculate residual braking torque in real-time. This feedback mechanism allows the system to dynamically adjust and maintain accurate torque estimation based on evolving thermal conditions, compensating for the indirect nature of the measurement.
Solution Approach 2:
The patent employs N-dimensional calculation models that consider multiple thermal parameters and their interrelationships. By analyzing temperature changes across different dimensions and time points, the system accurately reconstructs the residual braking torque from thermal field data, maintaining measurement precision despite using indirect thermal measurement.
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
Enables accurate and real-time estimation of residual braking torque, reducing fuel consumption and brake wear, while being compatible with on-board installations and applications.
Implementation Method 1
acquiring a temperature value of the brake disc
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3C
AI summary
A method for estimating the residual torque between the braked and braking elements of a vehicle that is characterized by the following phases: acquisition of the temperature value of said braking element; determination of whether said brake is activated when the temperature value is acquired; acceptance of the acquired temperature value if said brake is not activated at said acquisition time; if the acquired temperature value is accepted, automatically calculating a reference temperature using input from an N-dimensional calculation model with an N-dimensional vector of input variables; where said N-dimensional vector of variables includes at least the acquired temperature of said braking element; where said N-dimensional calculation model is an analytical or experimental characterization of the thermal behavior of the brake; estimating residual torque by comparing the accepted acquired temperature to the calculated reference temperature.