Brake Actuator Mode Limiting for Virtual Driving States
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Solution Overview
Problem
Conventional vehicle brake systems do not adequately address the issue of unnecessary brake operation and energy consumption when the vehicle is in an un-running state, leading to potential load application and energy wastage.
Innovation Solution
A vehicle brake apparatus with a controller that limits the operation of the brake actuator based on mode-selection information, disengaging mechanical coupling between the electric actuator and operation member to suppress brake actuator operation when the traveling state is not controlled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the brake actuator operates in response to brake operation member input during virtual driving, then the brake generates braking force, but unnecessary load is applied to brake components and energy is wastefully consumed
Solution Approach 1:
The brake actuator's operational state is dynamically changed based on the detected driving mode. In virtual driving mode, the actuator is restricted from operating, while in actual driving mode, full operation is permitted. This dynamic state adjustment resolves the contradiction by adapting system behavior to operational context.
Solution Approach 2:
The controller acts as an intermediary between the brake operation member and the brake actuator. It detects the driving mode and selectively permits or restricts actuator operation based on this information, preventing unnecessary energy consumption during virtual driving while maintaining operational responsiveness when needed.
2Productivity
If the brake actuator operates during virtual driving, then braking force is generated, but the traveling state control is not performed leading to unnecessary operations
Solution Approach 1:
The controller detects the current driving mode (virtual or actual) and uses this feedback information to determine whether to permit brake actuator operation. This feedback mechanism ensures that the actuator only operates when it will contribute to actual traveling state control, eliminating unnecessary operations and their associated harmful effects.
Solution Approach 2:
The controller preliminarily determines the appropriateness of brake actuator operation based on the detected driving mode before allowing the actuator to operate. By pre-assessing the operational context, the system prevents unnecessary brake component loading and energy waste before they occur.
Data Source
AI summary
A vehicle brake apparatus includes an operation member, an electric actuator configured to control a traveling state of a vehicle in which a coupling between the electric actuator and the operation member is mechanically disengaged, and a controller configured to control an operation of the electric actuator in accordance with an operation to the operation member. The vehicle brake apparatus includes a brake operation member included in the operation member, and a brake actuator included in the electric actuator. The controller is configured to obtain mode-selection information and, in response to selecting a particular mode based on the obtained mode-selection information, in which the control of the traveling state is not performed, limit at least the operation of the brake actuator in accordance with the operation of the brake operation member.