Automated Parking Speed Control via Brake Pressure Regulation
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Solution Overview
Problem
Existing automated parking systems face challenges in accurately maneuvering vehicles into smaller spaces without collision risks, especially at low speeds and on slopes, and lack precise control over speed adjustments.
Innovation Solution
The system regulates the speed of the vehicle by measuring and comparing it to predefined values, adjusting engine power and brake pressure to maintain precise control, allowing for automated parking at low speeds and on slopes without impediments, using a brake admission pressure that prevents engine blocking and allows for adaptive speed control based on predefined speed values and obstacle proximity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the vehicle speed is reduced to very low speeds for precise parking, then the parking precision is improved, but the engine may stall or lose power control
Solution Approach 1:
The brake system acts as an intermediary between the engine and the vehicle motion during automated parking. By applying brake pressure, the system enables the vehicle to move at very low speeds (3 km/h and below) without relying solely on engine power, thereby preventing engine stalling while maintaining precise speed control for accurate parking positioning.
2Manufacturing precision
If the brake pressure is increased to control speed at very low values, then the speed control precision is improved, but the engine may be blocked by the brake
Solution Approach 1:
The brake admission pressure is dynamically adjusted during the automated parking process. The system applies brake pressure progressively and adaptively, allowing the brake to engage smoothly without suddenly blocking the engine. This dynamic control enables precise speed regulation at very low speeds while maintaining engine operability and avoiding mechanical conflicts.
3Adaptability or versatility
If the automated parking system operates on slopes, then the versatility is improved, but the speed control stability deteriorates due to rolling resistance changes
Solution Approach 1:
The automated parking system continuously monitors actual vehicle speed and compares it with the target speed, then adjusts brake admission pressure accordingly. This feedback mechanism compensates for speed variations caused by rolling resistance changes on slopes, maintaining stable speed control and enabling reliable automated parking operation on inclined surfaces.
4Reliability
If the brake admission pressure is set high to prevent engine blocking, then the engine protection is improved, but the speed control precision deteriorates
Solution Approach 1:
The brake admission pressure is dynamically adjusted during the automated parking process. The system applies brake pressure progressively and adaptively, allowing the brake to engage smoothly without suddenly blocking the engine. This dynamic control enables precise speed regulation at very low speeds while maintaining engine operability and avoiding mechanical conflicts.
Data Source
AI summary
Regulating a speed of a motor vehicle during an automated parking operation comprises measuring a speed of the motor vehicle during the automated parking operation, comparing the measured speed with a predefined speed value, reducing an engine power of an internal combustion engine of the motor vehicle and increasing a brake pressure of a brake of the motor vehicle if the measured speed is higher than predefined by the predefined speed value, and increasing the engine power and reducing the brake pressure if the measured speed is lower than predefined by the predefined speed value.