Wheel Drive Control Using Matrix-Corrected Target Acceleration
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Solution Overview
Problem
The challenge of optimizing drive control systems for vehicle actuators is complicated by the need to test and integrate multiple subsystems post-assembly, leading to significant effort and potential instability.
Innovation Solution
A method and system that senses vehicle and wheel parameters to determine target wheel acceleration through a multi-stage process using matrices of correction factors, integrating powertrain and brake control to stabilize actuator operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple subsystems are used for drive control, then functional versatility is improved, but device complexity and testing effort increase
Solution Approach 1:
The patent combines multiple drive control subsystems (powertrain control, brake control, steering control, suspension control) into a single integrated drive control system. This unified system manages all actuators through a centralized control architecture that processes sensor inputs and coordinates actuator outputs, thereby reducing the number of separate control units while maintaining comprehensive vehicle control functionality.
Solution Approach 2:
The integrated drive control system performs multiple control functions simultaneously - powertrain management, brake control, steering assistance, and suspension adjustment - through a single multi-functional platform. This universal system can adapt to different operating conditions and control different actuator types, replacing what would traditionally require multiple specialized subsystems.
2Adaptability or versatility
If multiple subsystems are integrated after assembly, then functional completeness is improved, but testing effort and time increase
Solution Approach 1:
The control algorithms and subsystem integrations are developed and tested in advance during the system design phase. The drive control system incorporates pre-configured control strategies for various operating scenarios, allowing the integrated system to be deployed with minimal on-site testing required. This preliminary preparation of control logic and parameter sets reduces the time needed for post-assembly testing and optimization.
3Manufacturing precision
If subsystems are tested and optimized after assembly, then system integration accuracy is improved, but manufacturing complexity increases
Solution Approach 1:
The drive control system utilizes adjustable control parameters and gain values that can be optimized after assembly without requiring physical reconfiguration of the subsystems. The system allows parameter tuning through software configuration, enabling precise control calibration while avoiding complex mechanical adjustments or subsystem disassembly, thereby maintaining manufacturing simplicity while achieving high integration accuracy.
Data Source
AI summary
A method for the drive control of actuators of at least one wheel of a vehicle. The method includes: sensing a desired acceleration; sensing a vehicle velocity of the vehicle; sensing a wheel velocity of the wheel determining a status description of the wheel from the wheel velocity and a wheel acceleration; determining a first value of a target wheel acceleration from the status description, a slip of the wheel, and the desired acceleration; determining a second value of the target wheel acceleration from the wheel velocity, the wheel acceleration and the slip, wherein the second value is a function of correction factors of at least one matrix; and determining a third value of the target wheel acceleration, which value controls the actuators of the at least one wheel, wherein the third value is a function of the first value and of the second value.