Queue Following Braking Controller Using Entry Exit Logic
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Solution Overview
Problem
In slow-moving traffic, drivers face the tedious task of repeatedly pressing the brake and accelerator pedals, and managing the clutch in vehicles with manual gearboxes, leading to repetitive and labor-intensive driving operations.
Innovation Solution
A process and system that automatically adjusts the braking force based on vehicle state variables measured by sensors, using a programmable braking controller to activate brake calipers, reducing driver effort by implementing a target braking force strategy that includes logical entry and exit conditions, suitable for hybrid or all-electric braking systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the driver manually operates brake and accelerator pedals in slow-moving traffic, then the driver maintains control of the vehicle, but the driver experiences repetitive and labor-intensive operations
Solution Approach 1:
The braking system performs self-service by automatically detecting queue conditions and executing braking maneuvers without driver intervention. The system monitors vehicle state variables, detects when the vehicle is in a queue, and autonomously activates brake calipers to maintain appropriate spacing, freeing the driver from repetitive pedal operations.
Solution Approach 2:
The patent replaces manual mechanical pedal operations with an automated electronic control system. Sensors detect vehicle state variables, a processor determines queue conditions, and electronic actuators control the brake calipers, substituting the driver's mechanical foot operations with an automated electromechanical system.
2Ease of operation
If the driver manages the clutch in vehicles with manual gearboxes during braking and acceleration, then the engine is properly disconnected and connected, but the driving operation becomes more complex and labor-intensive
Solution Approach 1:
The system automatically manages clutch operations by detecting when the vehicle is in a queue and when braking or acceleration is required. The control system autonomously actuates the clutch mechanism to disconnect or connect the engine from the wheels, eliminating the need for manual clutch pedal operation by the driver.
3Manufacturing precision
If the braking system activates brake calipers based on target braking force, then precise braking control is achieved, but the system complexity increases
Solution Approach 1:
The braking system employs feedback by continuously monitoring vehicle state variables such as velocity and spacing, comparing these against desired values, and adjusting the target braking force accordingly. The system generates appropriate braking commands based on detected queue conditions and vehicle dynamics, achieving precise control through closed-loop feedback mechanisms.
Data Source
AI summary
A process for assisting the driving of a vehicle in a situation of following a queue. The vehicle is provided with a braking system and a plurality of sensors measuring values of variables defining an instantaneous state of the vehicle. The process includes the steps of: comparing the state of the vehicle with an entry state by testing a plurality of entry conditions; when the entry conditions are simultaneously verified, comparing the state of the vehicle with an exit state by testing a plurality of exit conditions; while at least one exit condition is not verified, generating a braking force value (F); and transmitting the value of the braking force generated as the target braking force (Ftarget) to the braking system.