Oscillator Drive Control for Stable Feeding Across Power Variations
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Solution Overview
Problem
Vibratory part feeders face challenges in maintaining stable oscillation due to variations in power supply voltage frequency and amplitude across different delivery destinations, leading to inconsistent part feeding and potential disruptions in production processes.
Innovation Solution
A drive control device that includes a voltage detection circuit, memory circuit, and arithmetic processing circuit to generate a switching pattern that adjusts the oscillation frequency and amplitude based on detected power supply voltage, ensuring constant oscillation regardless of voltage variations, without the need for special adjustments or part replacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the oscillator is designed to operate with fixed electromagnetic coil and spring member specifications, then the device structure is simple and easy to manufacture, but the oscillation frequency and amplitude cannot be adapted to different power supply voltage conditions at various delivery destinations
Solution Approach 1:
The patent changes the electrical parameters (frequency and amplitude) of the power supply voltage through the drive control device. The control device detects the input power supply voltage and generates a switching pattern that transforms the voltage parameters to match the required oscillation specifications, allowing adaptation to different delivery destination conditions without changing the physical structure of the electromagnetic coil or spring members.
Solution Approach 2:
The patent introduces a dynamic control system that automatically adjusts the drive parameters based on the detected power supply voltage conditions. The drive control device continuously monitors the input voltage and dynamically generates appropriate switching patterns to maintain constant oscillation frequency and amplitude, replacing the need for static, fixed-specification components.
2Reliability
If the electromagnetic coil and spring members are replaced to adapt to different power supply conditions, then the oscillation characteristics can be matched, but the installation time increases and skilled labor is required
Solution Approach 1:
The patent implements a self-service system where the drive control device automatically detects the power supply voltage conditions and self-adjusts the drive parameters without requiring external intervention. The device performs self-diagnosis and self-tuning by detecting the input voltage and automatically generating the appropriate switching pattern, eliminating the need for skilled workers to manually replace components or perform adjustments during installation.
Solution Approach 2:
The patent replaces the mechanical approach of physically changing components (electromagnetic coils and spring members) with an electrical control approach. Instead of mechanically replacing parts to match different power supply conditions, the system uses electronic parameter transformation through the drive control device to achieve the same adaptation goal, significantly reducing installation time and skill requirements.
3Stability of the object's composition
If the drive control device transforms the power supply voltage to match required frequency and amplitude, then constant oscillation is achieved, but the device complexity increases due to additional control circuits
Solution Approach 1:
The patent designs the drive control device with multi-functionality, where a single integrated control unit performs multiple functions: detecting input power supply voltage, determining the appropriate switching pattern, generating control signals, and transforming the voltage parameters. This universal approach consolidates what could be multiple separate components into one device, achieving constant oscillation characteristics while minimizing the actual increase in device complexity.
4Device complexity
If no special detector is provided for oscillation state, then the device structure is simple, but the amplitude control precision decreases when parts weight varies
Solution Approach 1:
The patent uses the power supply voltage as an intermediary parameter to indirectly control and maintain constant oscillation amplitude. Instead of directly detecting the oscillation state or amplitude, the drive control device detects the input power supply voltage and uses this information to adjust the drive parameters, thereby maintaining constant oscillation characteristics without requiring direct amplitude detectors or oscillation state sensors.
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 consistent and reliable part feeding across varying power supply conditions, improving production efficiency by maintaining constant oscillation and reducing the need for skilled labor and frequent adjustments.
Implementation Method 1
a voltage detection circuit for detecting a power supply voltage unique to a delivery destination of the oscillator
Implementation Method 2
An electromagnetic coil is provided on the base member, and the attracted portion is intermittently attracted by turning ON/OFF of power supply to the electromagnetic coil, thereby imparting a composed oscillation in a circumferential direction and a vertical direction to the bowl
Implementation Method 3
An attracted portion fixed on a back surface of a bottom portion of the bowl is supported by top ends of a plurality of spring members, and bottom ends of the plurality of spring members are fixed at a predetermined inclined angle to a base member in a stationary state
Data Source
AI summary
To drive an oscillator always at a stable and constant oscillation even if frequency and amplitude of a power supply voltage differ depending on a delivery destination of the oscillator, an oscillator drive control device (10), which generates a predetermined switching pattern by operating a switching element, and supplies an oscillation generation unit (7) of the oscillator with drive electric power for generating predetermined oscillation frequency and amplitude according to the switching pattern, includes: a voltage detection circuit (11) for detecting a power supply voltage unique to a delivery destination of the oscillator; a memory circuit (12) storing, in advance, a basic switching pattern adapted to an arbitrarily set reference voltage, and used for driving the oscillation generation unit (7) at proper oscillation frequency and amplitude; and an arithmetic processing circuit (13) for calculating a ratio of the detected voltage unique to the delivery destination detected by the voltage detection circuit (11) to the reference voltage, and calculating, based on the ratio, a switching pattern substantially the same as the basic switching pattern under an environment of the power supply voltage unique to the delivery destination.