Autonomous Deceleration Control via Movable Link and Encoder
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Solution Overview
Problem
Existing autonomous driving systems face challenges in seamlessly switching between driver-controlled and autonomous driving modes, particularly in effectively managing weak and sharp braking states, which affects system stability and safety.
Innovation Solution
An autonomous deceleration control apparatus with a brake module and brake control module, featuring a pedal link, pedal encoder, movable link, and link detection sensor, allows for smooth transitions between manual and autonomous driving modes by detecting rotational states and providing operational state information, ensuring high system stability during braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a brake control module with movable link and driver encoder is used to enable smooth transitions between manual and autonomous driving modes, then the switching effectiveness between driver-controlled and autonomous driving modes is improved, but the device complexity increases
Solution Approach 1:
The movable link acts as an intermediary mechanical component that physically connects the driver encoder mechanism to the pedal link. This intermediary structure enables smooth transitions between manual and autonomous driving modes by providing a mechanical interface that can be positioned in different states (engaged or disengaged), thereby resolving the contradiction between switching effectiveness and device complexity.
Solution Approach 2:
The driver encoder provides feedback information about the operational state of the driver and movable link to the brake control module. This feedback mechanism allows the system to accurately detect the position and state of the movable link, enabling effective switching between driving modes while maintaining controllable complexity through intelligent control based on sensor feedback.
2Measurement precision
If a link detection sensor is added to detect the movable link position for accurate braking state detection, then the measurement precision of braking state is improved, but the device complexity increases
Solution Approach 1:
The movable link is designed to be self-detectable by the link detection sensor through its own positional changes during operation. The sensor detects the position of the movable link directly as it moves between engaged and disengaged states, allowing the system to achieve accurate braking state detection without requiring additional complex detection mechanisms, thus resolving the contradiction between measurement precision and device complexity.
3Reliability
If the movable link is designed to press the pedal link downwards with a contact part for sharp braking, then the braking performance in emergency situations is improved, but the ease of operation decreases
Solution Approach 1:
The movable link is designed with dynamic positioning capability, allowing it to be in different states: engaged with the pedal link for sharp braking in emergencies, or disengaged for smooth manual braking operation. This dynamic design enables the system to adapt to different operational requirements, resolving the contradiction between braking performance in emergency situations and ease of normal operation by providing context-dependent behavior.
Data Source
AI summary
An autonomous deceleration control apparatus includes a brake module that receives an input signal; and a brake control module that controls an operational state of the brake module. The brake module includes a pedal link having a preset length and provided to be rotatable within a preset range; and a pedal encoder located adjacent to the one end of the pedal link and configured to detect a rotational state of the pedal link. The brake control module includes: a driver; a movable link rotatable about a movable link shaft located at one end thereof by the driver and provided to press the pedal link downwards according to a rotational state thereof; and a driver encoder connected to the movable link and configured to provide an operational state of the driver and movable link state information on the location of the movable link according to the operational state of the driver.