Roll Stabilizing Torque Control via Spring Travel
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Solution Overview
Problem
Existing roll stabilization systems for vehicles require direct torque measurement, which is costly and space-intensive, and often necessitates the use of torque sensors, complicating the control device and increasing costs.
Innovation Solution
A method that determines torque for a roll stabilizing system by measuring the difference in spring travel values between wheels, eliminating the need for a torque sensor and using an actuator connected to stabilizer halves to apply the calculated torque, thereby simplifying and cost-reducing the system while ensuring precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a torque sensor is used to directly measure torque in roll stabilization systems, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent uses spring travel values as an intermediary parameter to indirectly determine torque. Instead of directly measuring torque with a sensor, the system measures spring travel (which is easier and cheaper) and uses this as a mediator to calculate the actual torque through evaluation in the control device.
Solution Approach 2:
The patent replaces the mechanical torque sensor with an evaluation-based system that uses spring travel measurements. This substitution eliminates the need for complex mechanical torque sensing components while achieving the same functional goal of determining torque for roll stabilization.
2Difficulty of detecting and measuring
If a torque sensor is installed to measure torque, then torque detection accuracy is improved, but installation space requirements increase
Solution Approach 1:
The system uses spring travel values as an intermediary measurement that requires minimal installation space. By measuring spring travel instead of directly installing torque sensors, the system achieves torque detection capability without the space requirements of traditional torque sensing hardware.
Solution Approach 2:
The existing spring travel measurement infrastructure serves dual purposes: it provides suspension information and simultaneously enables torque determination for roll stabilization. This self-service approach eliminates the need for additional dedicated torque sensing components and their associated installation space.
3Measurement precision
If direct torque measurement is implemented, then control precision is improved, but system cost increases
Solution Approach 1:
The patent replaces expensive torque sensors with cheaper spring travel measurement systems. By using readily available spring travel data and evaluating it through software/algorithms in the control device, the system achieves torque measurement capability at a fraction of the cost of traditional torque sensing hardware.
Solution Approach 2:
The spring travel measurement system serves multiple functions: it provides suspension status information and simultaneously enables torque determination for roll stabilization. This multi-functionality eliminates the need for separate torque sensing components, reducing overall system cost while maintaining measurement precision.
Data Source
AI summary
A method for controlling a torque of a roll stabilizing system which acts on a wheel suspension system of a chassis for a vehicle in order to correct a rolling inclination of the bodywork of a vehicle, wherein a spring travel value of at least two wheels of the vehicle is detected. The torque is determined as a function of a difference between the spring travel values of the two wheels, and the determined torque is applied to the wheel suspension system. An actual torque which acts on the wheel suspension system is preferably determined on the basis of the differences between the spring travel values. The actual torque is used to calculate a setpoint torque for a roll stabilizing system.