Vibration Device Servo Eccentricity Control
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Solution Overview
Problem
Existing vibration devices lack the ability to dynamically adjust the exciting force during operation, requiring complex and inaccurate manual adjustments, which can lead to increased motor load and risk of electrical component damage.
Innovation Solution
A vibration device equipped with an eccentric vibrator and a servo linear motion system that allows for real-time adjustment of eccentricity, enabling precise control of the exciting force by synchronously rotating first and second eccentric bodies connected via a spiral groove and boss structure, and a servo linear motion system that adjusts the eccentricity without stopping the motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual adjustment of eccentricity is performed to control exciting force, then the vibration device can be adjusted for different vibration parameters, but the operation process becomes very complex requiring repeated stop, adjustment, and start
Solution Approach 1:
The patent applies the dynamics principle by replacing static manual adjustment with dynamic automatic control. The servo linear motion system enables real-time adjustment of eccentricity during operation, allowing the vibration device to adapt to different vibration parameters without stopping, thus resolving the contradiction between adaptability and ease of operation
Solution Approach 2:
The patent replaces the manual mechanical adjustment system with an automated servo control system. The servo linear motion system uses electrical signals to control the position of the connecting shaft, substituting the complex manual mechanical adjustment process with a simpler automated control mechanism
2Adaptability or versatility
If manual eccentricity adjustment is performed in stationary state, then the eccentricity can be changed, but the adjustment accuracy is poor and difficult to reach optimal exciting force parameter
Solution Approach 1:
The patent implements feedback control through the servo linear motion system, which can accurately position the connecting shaft based on control signals. The system continuously monitors and adjusts the eccentricity to achieve the optimal exciting force parameter, resolving the accuracy problem of manual adjustment
Solution Approach 2:
The patent replaces imprecise manual mechanical adjustment with a precision servo control system. The servo system provides accurate positioning of the connecting shaft, enabling precise eccentricity control that can reach the optimal exciting force parameter
3Force
If vibration device is adjusted to large eccentricity for large exciting force, then the exciting force increases, but the start load and current of vibration motor increase causing electrical components to burnout or motor damage
Solution Approach 1:
The patent applies preliminary action by adjusting the eccentricity to a minimum value before motor startup. The servo linear motion system positions the connecting shaft to minimize eccentricity during startup, reducing the start load and current. After startup, the eccentricity is adjusted to the required value, preventing motor damage while achieving the desired exciting force
Solution Approach 2:
The patent uses dynamic adjustment of eccentricity to resolve the contradiction between exciting force and motor reliability. The system maintains low eccentricity during startup to protect the motor, then dynamically increases eccentricity after startup to achieve the required exciting force
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
Enables accurate and automatic control of the exciting force during operation, reducing the risk of motor damage and electrical component failure by adjusting the eccentricity to a minimum at startup and allowing for precise force adjustments, making the process simpler and more suitable for automatic control.
Implementation Method 1
At least one of the first eccentric body (1) or the second eccentric body (2) is connected to the connecting shaft (5) by a spiral groove and a boss structure matching the spiral groove
Implementation Method 2
a vibration motor (8) configured to drive the eccentric vibrator to rotate
Implementation Method 3
a servo linear motion system (9) configured to adjust an eccentricity of the eccentric vibrator
Data Source
AI summary
A vibration device belongs to the field of vibration machinery technologies, and includes an eccentric vibrator, a vibration motor, and a servo linear motion system. The eccentric vibrator includes at least a first eccentric body, a second eccentric body, and a connecting shaft. At least one of the first eccentric body or the second eccentric body is connected to the connecting shaft by a spiral groove and a boss structure matching the spiral groove. The servo linear motion system is connected to the connecting shaft. The servo linear motion system pushes the connecting shaft to move linearly, and drives the second eccentric body to rotate in a circumferential direction, and the first eccentric body remains stationary, so that adjustment of relative positions of the first eccentric body and the second eccentric body in the circumferential direction is implemented, and the purpose of controlling the magnitude of an exciting force in real time in a working process of equipment is implemented.