Autonomous Vehicle Joystick Control With Steering Force Feedback
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Solution Overview
Problem
Existing autonomous vehicles lack an intuitive and efficient user-operated device for manual driving mode, particularly one that integrates acceleration, deceleration, and steering functions, complicating emergency takeovers and user experience.
Innovation Solution
An integrated operation apparatus using a joystick lever module with actuator modules and sensor modules to detect and control acceleration, deceleration, and steering operations, providing a single-handed operation for vehicle control with feedback mechanisms for precise force recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple switches are used for acceleration, braking, steering, and gear shifting, then the vehicle can be controlled in manual driving mode, but the device complexity increases and ease of operation decreases
Solution Approach 1:
The patent combines multiple control functions (acceleration, braking, steering, gear shifting) into a single joystick lever. The joystick lever includes a handle for hand operation and an operation portion that integrates multiple switches, allowing the user to control all vehicle functions through one unified interface rather than multiple separate controls
Solution Approach 2:
The joystick lever is designed as a universal control device that performs multiple functions. By integrating acceleration switches, braking switches, steering switches, and gear shifting switches into a single lever structure, the device achieves multi-functionality while reducing the number of separate components the user must manipulate
2Ease of operation
If a joystick lever with integrated switches is used, then ease of operation improves, but the device complexity increases
Solution Approach 1:
The patent implements a nested structure where the operation portion containing multiple switches is integrated within the joystick lever body. The handle and operation portion form a nested configuration where the complex switch assembly is contained within the simpler lever exterior, allowing complex functionality to be accessed through a simple interface
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
Enhances user satisfaction and marketability by allowing easy and precise vehicle control, reducing driver fatigue, and enabling sudden acceleration or braking through a single joystick lever with integrated feedback systems.
Implementation Method 1
an acceleration and deceleration actuator module coupled to the acceleration and deceleration actuator housing and connected to the joystick lever module for power transmission to generate a reaction force in the joystick lever module rotated for accelerating or decelerating during operation thereof and return the joystick lever module to the neutral position with the generated reaction force
Implementation Method 2
a steering actuator module coupled to the main body and connected to the acceleration and deceleration actuator housing to generate a reaction force in the joystick lever module rotated for steering during operation thereof and return the joystick lever module to a neutral position with the generated reaction force
Implementation Method 3
a first position sensor module provided in the joystick lever module and the acceleration and deceleration actuator housing to detect acceleration and deceleration positions of the joystick lever module
Implementation Method 4
a second position sensor module provided in the main body and the steering actuator module to detect the steering position of the joystick lever module
Data Source
AI summary
An integrated operation apparatus for an autonomous vehicle, includes a joystick lever used to accelerate, decelerate, and steer the vehicle, an acceleration and deceleration actuator module and a steering actuator module each include a position sensor module to generate signals related to the acceleration, deceleration, and steering of the vehicle when the joystick lever module is operated, and a torque sensor module is used to feedback control a steering motor during steering operation, realizing more precise steering sensation.