Vehicle Motion Control Apparatus Jerk Management
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Solution Overview
Problem
Existing vehicle motion control systems require frequent driver input for deceleration, leading to increased operational load and reduced comfort due to the need for step-changing operations between the accelerator and brake pedals, especially in continuous curves and urban driving scenarios.
Innovation Solution
A vehicle motion control system that acquires longitudinal and lateral acceleration, vehicle speed, and pedal operation data to calculate and generate longitudinal acceleration commands, mimicking the driver's intended jerk, thereby reducing the need for frequent pedal operations and enhancing control feel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If deceleration control is implemented based on accelerator pedal position or traveling state, then the need for brake pedal operation is reduced, but the driver must continuously operate the accelerator pedal which increases operational load
Solution Approach 1:
The system automatically generates deceleration by processing the driver's accelerator pedal operation signals, eliminating the need for the driver to continuously manipulate the accelerator pedal. The control apparatus self-manages deceleration generation based on the driver's intent inferred from accelerator pedal position and operation patterns.
2Ease of operation
If deceleration is generated based on accelerator pedal operation, then brake pedal usage is reduced, but the deceleration may not match the driver's intended deceleration profile
Solution Approach 1:
The control system continuously monitors accelerator pedal operation and vehicle response, adjusting the generated deceleration to match the driver's intended profile. By analyzing the temporal and positional characteristics of accelerator pedal operations, the system refines its deceleration generation to align with driver expectations.
Solution Approach 2:
The system dynamically adjusts deceleration parameters based on accelerator pedal position and operation characteristics. By changing the control parameters according to the driver's input patterns, the system generates deceleration that accurately reflects the driver's intent while maintaining smooth control transitions.
3Adaptability or versatility
If curve information is acquired using GPS or camera systems, then navigation-based motion control is enabled, but the system cost increases significantly
Solution Approach 1:
The invention extracts and utilizes existing sensor data (accelerometer, gyroscope, steering angle sensors) that are already present in modern vehicles for motion control purposes. By repurposing existing components rather than adding specialized navigation equipment, the system achieves curve-based motion control without increasing system complexity or cost.
Data Source
AI summary
In order to propose a vehicle motion control apparatus providing a good operability for a driver and capable of reducing a pedal operation, motional state information acquiring means configured to acquire longitudinal acceleration, lateral acceleration, and a vehicle speed generated in a vehicle; pedal operating amount acquiring means configured to acquire pedal operation information performed by the driver; and vehicle motion control command calculating means configured to calculate a longitudinal acceleration command value on the basis of information acquired therefrom and output a command value realizing the calculated longitudinal acceleration command value are provided, and the vehicle motion control command calculating means is configured to calculate the longitudinal acceleration command value on the basis of the acquired information so as to generate longitudinal acceleration which provides a longitudinal jerk of a value comparable to a longitudinal jerk on the basis of a pedal opening operation performed by the driver.