Electromechanical Brake Wear Compensation With Decoupled Force Gain
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Solution Overview
Problem
The electromechanical braking systems face issues with complex internal structures due to the stacking of gain and wear compensation mechanisms, leading to interference in precision control and increased manufacturing costs, and the braking force output is fixed, which can result in sticking or wear.
Innovation Solution
The braking system decouples braking force gain and wear compensation to different friction plates using a unidirectional torque limiting apparatus, where a drive apparatus drives a gain bridge and stud to adjust spacing between friction plates, allowing for independent control of braking force and wear compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gain mechanism and a wear compensation mechanism are stacked on each other to adjust braking force and compensate wear, then the electromechanical braking system can maintain braking performance, but the internal structure becomes complex and manufacturing costs increase
Solution Approach 1:
The patent divides the braking system into two independent friction plates: a first friction plate connected to the caliper body for wear compensation, and a second friction plate connected through a gain mechanism for braking force adjustment. This segmentation allows each mechanism to function independently without interfering with the other, simplifying the overall control structure while maintaining both wear compensation and braking force adjustment capabilities
Solution Approach 2:
The patent extracts the wear compensation function from the traditional stacked mechanism and implements it through a separate first friction plate that is directly connected to the caliper body. This extraction eliminates the need for complex stacked mechanisms, as the wear compensation is achieved through the independent movement of the first friction plate relative to the caliper body
2Reliability
If a gain mechanism and a wear compensation mechanism are stacked on each other to adjust braking force and compensate wear, then the electromechanical braking system can maintain braking performance, but manufacturing costs increase
Solution Approach 1:
The patent segments the braking system into two independent friction plates with distinct functions, allowing each component to be manufactured and assembled separately. This reduces manufacturing complexity and costs compared to producing a single integrated stacked mechanism, while ensuring both wear compensation and braking force adjustment functions are reliably implemented
3Reliability
If a gain mechanism and a wear compensation mechanism are stacked on each other, then braking force adjustment and wear compensation are achieved, but precision control is reduced due to energy flow crossing
Solution Approach 1:
The patent assigns the wear compensation function to the first friction plate and the braking force adjustment function to the second friction plate, eliminating energy flow crossing between mechanisms. This segmentation enables precise control of each function independently, as the drive apparatus can control the position of each friction plate without interference from the other mechanism
Solution Approach 2:
The patent extracts the wear compensation function into a separate first friction plate that operates independently from the second friction plate responsible for braking force adjustment. This extraction eliminates the energy flow crossing problem inherent in stacked mechanisms, allowing precise control of each function without mutual interference
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
This approach simplifies the system structure, enhances reliability, and ensures consistent braking force throughout the system's life by decoupling the mechanisms, reducing interference and manufacturing costs.
Implementation Method 1
a unidirectional torque limiting apparatus, where a drive apparatus drives a gain bridge and stud to adjust spacing between friction plates
Implementation Method 2
a gain bridge, one friction plate, the other friction plate, and the stud are arranged sequentially, the gain bridge is configured to movably connect the caliper body and the one friction plate
Implementation Method 3
two friction plates slide relative to each other to implement braking
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
This application provides an electromechanical braking system with wear compensation and a vehicle. The electromechanical braking system includes a caliper body, two friction plates, a gain bridge, a stud, and a drive apparatus, the gain bridge, one friction plate, the other friction plate, and the stud are arranged sequentially, the gain bridge is configured to movably connect the caliper body and the one friction plate, and the stud is configured to drivingly connect the caliper body and the other friction plate; the drive apparatus is configured to: drive the gain bridge and the one friction plate, and drive the stud and the other friction plate; and the drive apparatus is further configured to drive, through a unidirectional torque limiting apparatus, the stud to rotate relative to the caliper body along an axis of the stud. In this application, in the electromechanical braking system, a braking force gain and the wear compensation are decoupled through the unidirectional torque limiting apparatus, and the braking force gain and the wear compensation are decoupled to the two different friction plates, to improve reliability of the electromechanical braking system.