Vehicle Control Apparatus Brake Pedal Inversion for Smooth Driver Assistance
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Solution Overview
Problem
Existing vehicle control systems that initiate driver assistance operations by depressing the accelerator pedal can cause uncomfortable 'vehicle jump-out' feelings for operators, as they disrupt the vehicle's stopped state, leading to an unpleasant transition.
Innovation Solution
A control apparatus that includes a brake control portion to maintain the vehicle's stopped state independently of the brake pedal operation, a driver-assistance control portion to inhibit driver assistance until the brake pedal is returned, and a notification control portion to remind the operator to depress the brake pedal, ensuring a smooth transition to driver assistance by starting it only when the brake pedal is depressed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the driver assistance operation is started by depressing the accelerator pedal, then the driver assistance operation can be initiated, but the operator experiences an uncomfortable 'vehicle jump-out' feeling
Solution Approach 1:
Instead of starting the driver assistance operation when the accelerator pedal is depressed, the system inverts the trigger condition to start the operation when the brake pedal is returned (released). This inversion eliminates the sudden vehicle movement that causes the jump-out feeling, as the vehicle is already in a stopped state when the brake is released, providing a smooth and comfortable transition into the driver assistance operation.
2Stability of the object's composition
If the brake control portion keeps the vehicle in stopped state independently of brake pedal operation, then the vehicle can be held stopped, but the driver assistance operation cannot be started during the stopped state
Solution Approach 1:
The system dynamically adjusts the availability of driver assistance operation based on the brake pedal state. When the brake pedal is depressed, the driver assistance operation is inhibited to maintain stopped state stability. When the brake pedal is returned, the system transitions to allow driver assistance operation, providing adaptability while maintaining stability during the stopped state.
Solution Approach 2:
The system performs preliminary verification of the brake pedal state before allowing the driver assistance operation to start. By checking that the brake pedal has been returned (indicating the vehicle is ready to move), the system ensures stable transition conditions are met before activating the driver assistance operation, preventing premature or unstable operation initiation.
Data Source
AI summary
A vehicle control apparatus includes: a brake control portion which is configured, when a vehicle is stopped, to cause a braking apparatus to keep a stopped state in which the vehicle is held stopped independently of operation of a brake pedal of the vehicle; a driver-assistance control portion which is configured to start a driver assistance operation in response to a manual operation made by the operator, and which is configured, when the stopped state is kept by the brake control portion, to withhold start of the driver assistance operation; and a withhold cancel portion which is configured, when a returning operation of the brake pedal has been made by the operator, to cause the driver-assistance control portion to cancel withhold of the start of the driver assistance operation.