Adjustable Roll Stabilizer Torque Plausibility Check
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Adjustable roll stabilizers for motor vehicles face challenges in operating the actuator motor in both driving and deceleration modes due to overshooting and external forces, leading to control deviations and the need for four-quadrant operation.
Innovation Solution
A method and system for operating the adjustable roll stabilizer that includes a plausibility check of the target motor torque, considering the control deviation and actual system angle, to determine if the motor should operate in deceleration mode, ensuring reliable four-quadrant operation by assessing whether the target motor torque would increase the control deviation and exceeding specific thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actuator motor is operated in four-quadrant mode to handle overshooting and external forces, then the reliability of position control is improved, but the device complexity increases
Solution Approach 1:
The control system continuously monitors the actual system angle and compares it with the set-point angle to determine the control deviation. This feedback mechanism enables the position-rotational speed regulator to detect overshooting conditions and external forces, allowing the motor to operate in appropriate quadrants for reliable position control.
Solution Approach 2:
The system dynamically adjusts the motor operating quadrant based on real-time conditions. The position-rotational speed regulator evaluates the control deviation and determines whether deceleration mode is required, enabling the motor to switch between driving and deceleration modes as needed for optimal control reliability.
2Speed
If the position-rotational speed regulator determines target motor torque without plausibility check, then the control response speed is improved, but the manufacturing precision of position control deteriorates
Solution Approach 1:
The plausibility check is performed in advance before the motor executes the target torque command. The position-rotational speed regulator evaluates whether the determined target motor torque is plausible by checking if it would increase the control deviation, preventing erroneous commands from degrading position control precision.
Solution Approach 2:
The system uses feedback from the control deviation to validate the target motor torque. By comparing the intended torque action against the current control deviation state, the system ensures that only torque commands that will improve or maintain position accuracy are executed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed solution allows for reliable four-quadrant operation of the adjustable roll stabilizer, reducing overshooting and effectively managing external forces, thereby enhancing vehicle stability and comfort by ensuring precise control of the actuator motor.
Implementation Method 1
the actuator comprises an electric motor which is in driving connection with a mechanical gear system
Implementation Method 2
mechanical gear system, particularly in the form of a multi-step planetary gearset, in order to produce suitable rotational speeds and torques
Implementation Method 3
Within the adjustable roll stabilizer, particularly in the stabilizer sections, depending on the operating condition, mechanical energy (kinetic energy or potential energy produced by deformation) can be stored
Data Source
AI summary
A method for operating an adjustable roll stabilizer for a motor vehicle. The adjustable roll stabilizer has an actuator which relative to a rotational axis can be rotated through a system angle in order to twist two stabilizer sections connected to it about the rotational axis relative to one another. The stabilizer sections are each coupled to a respective wheel suspension at a radial distance away from the rotational axis, and, starting from a target angle to be set at the actuator and having regard to the actual system angle and other parameters of the adjustable roll stabilizer and/or the motor vehicle equipped with it, a position-rotational speed regulator determines a target motor torque on the basis of which a motor of the actuator is controlled, so that having regard to the target angle and the actual system angle, the target motor torque is checked for plausibility.