Central Vehicle Dynamics Control System Architecture
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Solution Overview
Problem
The complexity and functional restrictions in vehicle driving dynamics control systems arise from standalone operation of subsystems like electronic brake systems, active steering, and chassis components, which often overlap in their control targets, leading to suboptimal performance and increased application complexity.
Innovation Solution
A central driving dynamics control system with a multivariable controller that integrates signal distribution, central determining units, and regulating variables to actuate subsystems interactively, optimizing control targets and reducing complexity by coordinating the actions of multiple subsystems like steering, brakes, and chassis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple standalone subsystems are used to control different aspects of vehicle dynamics, then each subsystem can be optimized for its specific control target, but the overall system complexity increases and functional restrictions arise due to lack of coordination
Solution Approach 1:
The patent combines multiple standalone control subsystems (steering, brake, chassis, driving) into a single integrated driving dynamics control system with a central determining unit. This central unit receives all sensor inputs and coordinates all actuators uniformly, eliminating the complexity of multiple independent control units while maintaining optimized control for each subsystem through the multivariable controller's coordinated action
2Adaptability or versatility
If each subsystem operates independently with its own control unit, then each subsystem can be tuned for its specific control target, but mutual protection and coordination between subsystems become extremely complex
Solution Approach 1:
The central determining unit serves as a universal control platform that handles multiple control functions simultaneously. It processes sensor data from all subsystems and generates control signals for all actuators, making the system adaptable to different control scenarios while simplifying the overall architecture. The multivariable controller provides unified coordination across steering, brake, chassis, and driving subsystems
3Adaptability or versatility
If multiple subsystems control overlapping driving dynamics quantities, then comprehensive control coverage is achieved, but functional restrictions arise as subsystems must limit each other
Solution Approach 1:
By merging all subsystems under a single integrated control architecture, the patent eliminates the need for subsystems to limit each other. The central determining unit with its multivariable controller coordinates all actuators to work together harmoniously toward common control objectives, achieving comprehensive control coverage without functional restrictions. Each subsystem can operate at full capability since the central unit manages their interactions
Data Source
AI summary
The present device relates to a driving dynamics control system for vehicles, including at least one signal distribution to which vehicle data, environment data and data regarding the driver's request are sent in the form of input data, and including several controllable or regulatable subsystems which modify the dynamics of the vehicle such as a driver-independently adjustable steering system, a driver-independently adjustable chassis, a driver-independently adjustable brake, and a driver-independently adjustable driving track. The system is characterized in that the data of the signal distribution is sent to a central determining unit (driving condition detection, driver request detection), in that the central determining unit determines from the data of the signal distribution a central control target, and these items of data regarding the central control target are sent to a central regulating variable distribution or a central driving condition controller, respectively, which, in an interactive communication with the subsystems, actuates these subsystems in such a way that the control target is realized by the subsystems on the vehicle.