Automated Wheel Balancing Holding Brake Control
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Solution Overview
Problem
Conventional vehicle wheel balancing methods require manual intervention to maintain the wheel in a specific rotational position, leading to potential rotation due to static unbalance and rapid wear of mechanical brakes during deceleration.
Innovation Solution
An automated system that uses an electronic control device to apply a holding braking moment to the wheel after an unbalance measuring run, preventing autonomous rotation and allowing manual repositioning for further balancing operations, utilizing an electrically actuated brake with a braking current set based on measurement results and wheel dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical holding brake is operated by the operator to stop the wheel, then the wheel can be stopped in the given angular position, but the brake suffers rapid wear and quickly becomes useless due to being actuated during deceleration
Solution Approach 1:
The patent replaces the manually operated mechanical holding brake with an electronically controlled brake system. The electronic control device automatically actuates the holding brake based on signals from the control unit, eliminating the need for manual operation and preventing premature wear caused by inappropriate braking during deceleration phases.
Solution Approach 2:
The electronic control system automatically manages the holding brake operation without requiring operator intervention. The control unit monitors the wheel's rotational position and speed, and the electronic control device automatically applies or releases the holding brake as needed, making the system self-regulating and eliminating manual operation errors.
2Stability of the object's composition
If the operator manually monitors and corrects the wheel position, then the wheel position can be maintained, but the operating procedure becomes complex and time-consuming
Solution Approach 1:
The patent implements a feedback control system where the control unit continuously receives signals about the wheel's rotational position from sensors during the measuring run. Based on this feedback, the control unit automatically calculates and executes the necessary braking moment to stop the wheel in the correct angular position, eliminating the need for manual position monitoring and correction.
Solution Approach 2:
The manual monitoring and correction process is replaced by an electronic control system that automatically tracks the wheel position using sensors and makes real-time adjustments through electronic control of the braking mechanism, simplifying the operating procedure while maintaining position stability.
3Loss of time
If the holding brake is actuated during deceleration to shorten braking time, then the stopping process is faster, but the holding brake not designed for deceleration suffers rapid wear
Solution Approach 1:
The patent divides the braking function into two separate systems: a service brake designed for deceleration during the measuring run, and a holding brake designed for maintaining the wheel in the stopped position. The electronic control device manages each brake independently, applying the service brake for deceleration and the holding brake only for position maintenance, preventing the holding brake from suffering wear during deceleration phases.
Solution Approach 2:
The electronic control system dynamically adjusts which brake is active based on the wheel's operational state. During deceleration, the service brake is engaged; when the wheel reaches the target position and stops, the holding brake is engaged. This dynamic switching optimizes braking time while protecting the holding brake from inappropriate use.
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 system effectively maintains the wheel in a stable position without operator influence, reducing brake wear and simplifying the balancing process by automatically applying a controlled braking moment, enabling dynamic balancing in multiple positions.
Implementation Method 1
the wheel is subjected to the effect of an automatic holding braking moment which prevents the wheel from rotating of its own accord by virtue of its static unbalance
Implementation Method 2
an electrically actuated brake with a braking current set based on measurement results and wheel dimensions
Data Source
AI summary
In a method and apparatus for balancing a vehicle wheel, the wheel when fixed to a main shaft of a balancing machine, after the implementation of a wheel unbalance measuring run, is stopped at a given rotational angular position for a balancing operation to be carried out on the wheel, by braking of the rotary movement of the wheel. When the wheel is in the stopped condition, a braking moment derived from the unbalance measurement result and applied by a holding brake is caused to act on the wheel so that the wheel is prevented from rotating of its own accord by virtue of its static unbalance.