Rear-view mirror active vibration damping via motor control
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Solution Overview
Problem
Existing rear-view devices for motor vehicles require additional passive or active components for vibration damping, which complicates their design and adjustment.
Innovation Solution
The use of existing drive motors in the adjusting drive is enhanced by a control or regulating device that adjusts the energizing process based on detected and stored variables, such as vehicle speed, engine speed, and weather conditions, to actively dampen vibrations and stabilize the mirror or image acquisition elements without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional passive or active components are mounted on mirror components for vibration damping, then vibration damping performance is improved, but device complexity increases
Solution Approach 1:
The adjusting drive motors are made to perform dual functions: their primary function of adjusting the mirror field of view is enhanced with a secondary function of active vibration damping. The control device enables the motors to operate in damping mode by applying counteracting forces based on detected vibration variables, eliminating the need for separate damping components and reducing overall device complexity while maintaining reliable vibration compensation
2Reliability
If additional components are added for vibration damping, then vibration damping performance is improved, but ease of operation deteriorates
Solution Approach 1:
The adjusting drive system is enhanced to provide both field of view adjustment and vibration damping through the same motor components. The control device intelligently manages the motors to perform damping operations without interfering with the user's ability to manually adjust the mirror position, maintaining ease of operation while adding vibration compensation capability
3Reliability
If additional components are added for vibration damping, then vibration damping performance is improved, but manufacturing simplicity deteriorates
Solution Approach 1:
The solution utilizes the existing adjusting drive motors and control infrastructure to provide vibration damping functionality. By programming the control device to enable damping mode and activate counteracting forces based on detected variables, the system achieves vibration compensation without requiring additional physical components, thereby maintaining manufacturing simplicity while improving vibration damping performance
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
This approach simplifies the adjustment of rear-view devices by using existing drive motors to actively dampen vibrations, eliminating the need for extra components and providing a stable mirror or image acquisition view, enhancing the device's flexibility and application range.
Implementation Method 1
The control or regulating device controls or regulates the motor via the energizing process of the motor depending on at least one variable... in order to counteract movements of the at least one rear-view element relative to the housing... caused in particular by the movements of the motor vehicle
Data Source
AI summary
A rear-view device for a motor vehicle with vibration damping, includes at least one rear-view element which is mounted in a housing in an adjustable manner relative to the housing via an adjusting drive, where the adjusting drive includes at least one motor which can be adjusted via a control or regulating device in order to adjust the field of view, and the control or regulating device controls or regulates the motor via the energizing process of the motor depending on at least one variable, which is selected from a first detected variable and/or at least one second stored variable, during a driving process in order to counteract movements of the at least one rear-view element relative to the housing by adjusting the motor, said movements being caused in particular by the movements of the motor vehicle during the driving process of the motor vehicle.