Distributor Linkage Active Mass Damping for Spreader Vibration
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Solution Overview
Problem
Existing agricultural distribution machines face challenges in effectively damping vibrations in their distributor linkages, leading to inconsistent application rates due to oscillations during deceleration, acceleration, or turning, with existing solutions being complex, unsatisfactory, or limited to specific vibration directions.
Innovation Solution
An agricultural distribution machine equipped with a sensor-actuated device for active vibration damping, featuring a movable mass coupled to the distributor linkage that adjusts along the vibration direction, controlled by an electronic control unit to counteract oscillations, effectively damping vibrations across various frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If passive damping elements are used, then the structure is simple, but the vibration damping effectiveness is insufficient
Solution Approach 1:
The patent applies active vibration damping by dynamically adjusting the position of a movable mass along the distributor linkage using an actuator. The control unit continuously monitors vibrations and adjusts the mass position in real-time to counteract oscillations, transforming a static passive system into a dynamic active system that adapts to varying vibration conditions.
Solution Approach 2:
The patent implements a feedback control system where a sensor detects vibrations in the distributor linkage, the control unit processes this information, and the actuator adjusts the movable mass position accordingly. This closed-loop feedback mechanism ensures continuous optimization of vibration damping effectiveness.
2Reliability
If active actuators are positioned between the chassis and the boom, then vibration damping effectiveness improves, but the device complexity increases significantly
Solution Approach 1:
The patent extracts the vibration damping function from the main chassis-boom connection structure and implements it locally at the distributor linkage level. By positioning the movable mass and actuator directly on the distributor linkage rather than between the chassis and boom, the solution simplifies the connection structure while maintaining effective vibration damping.
Solution Approach 2:
The patent segments the vibration damping function into a localized system on the distributor linkage, separating it from the main chassis-boom connection. This segmentation allows the damping mechanism to operate independently with simpler connections while effectively addressing vibrations at their source.
3Object-affected harmful factors
If the entire boom is adjusted in the forward direction, then the effects of linear decelerations or accelerations are reduced, but the device complexity increases
Solution Approach 1:
The patent applies local quality by addressing vibrations at the specific location of the distributor linkage rather than adjusting the entire boom. The movable mass and actuator are positioned locally on the linkage to counteract vibrations caused by linear decelerations or accelerations, avoiding the complexity of moving the entire boom structure.
4Ease of operation
If passive mass and spring damping is used, then no active control is needed, but the damping characteristics cannot be varied
Solution Approach 1:
The patent transforms the static passive mass-spring system into a dynamic active system by adding an actuator that can adjust the movable mass position. This allows the damping characteristics to be dynamically varied in response to different operating conditions while maintaining automatic operation through feedback control.
Solution Approach 2:
The patent enables parameter changes by allowing the control unit to adjust the position of the movable mass along the distributor linkage. This changes the damping characteristics in real-time to adapt to different vibration frequencies and amplitudes, providing versatility while maintaining automatic operation.
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 solution provides efficient and flexible vibration damping, ensuring consistent application rates by actively counteracting oscillations, reducing the complexity of previous solutions and improving damping effectiveness across different vibration frequencies.
Implementation Method 1
a movable mass (44) coupled to the distribution linkage (28) and adjustable by means of an actuator (46) along the direction in which vibrations are to be damped
Implementation Method 2
a sensor (48) for detecting a vibration of the distribution linkage (28)
Data Source
Figure 1~2
AI summary
An agricultural spreading machine (22) is equipped with a distribution linkage (28) and a device (40) for actively damping vibrations occurring in the distribution linkage (28), which includes a sensor (48) for detecting a vibration of the distribution linkage (28), an electronic control device (50) connected to the sensor (48) and an actuator (46) that can be actuated by the control device (50) for adjusting a mass (44) coupled to the distribution linkage (28) and movable along the direction of the vibration to be damped.