Multi-Subcontroller Oscillator for Simultaneous Frequency Tracking
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Solution Overview
Problem
Existing methods for measuring vibrational characteristics of oscillating systems can only track one resonance frequency at a time, limiting their application to slowly changing processes and making them prone to errors due to spatial separation of sensors with different properties.
Innovation Solution
A control system using multiple subcontrollers to simultaneously track multiple harmonic motions with different frequencies in a single oscillator, allowing for the independent control of these motions and enabling the measurement of properties like density, viscosity, and viscoelastic properties of fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple resonance frequencies are tracked using several separate oscillators, then measurement redundancy and accuracy are improved, but the sensors are spatially separated and may have different properties leading to measurement errors
Solution Approach 1:
The control system is segmented into multiple independent subcontrollers (first subcontroller, second subcontroller, etc.), where each subcontroller independently tracks a specific resonance frequency. This allows multiple frequencies to be monitored simultaneously while maintaining independent control over each frequency's measurement process, ensuring consistent and accurate measurements across all tracked frequencies.
2Adaptability or versatility
If consecutive tracking of resonance frequencies is used, then multiple frequency values can be obtained, but the method is time consuming and limits application to slowly changing processes
Solution Approach 1:
The system maintains continuous tracking of multiple resonance frequencies simultaneously through parallel subcontrollers operating in real-time. This eliminates the need for sequential measurement cycles, enabling the system to respond to rapidly changing processes and providing continuous data on multiple frequencies without interruption or time delay.
3Device complexity
If a single oscillator tracks one resonance frequency, then the system is simple, but it cannot provide multiple frequency values for improved measurement accuracy or error compensation
Solution Approach 1:
A single oscillating system is designed to perform multiple functions by simultaneously tracking multiple resonance frequencies. The system uses multiple subcontrollers to monitor different frequencies (first resonance frequency, second resonance frequency, etc.) within the same physical oscillator, providing redundant measurement data for improved accuracy and error compensation while avoiding the need for multiple separate 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 rapid and accurate determination of fluid properties by simultaneously controlling bending and torsional oscillations, improving measurement precision and allowing for dynamic changes to be monitored, which was previously not possible with classical rheometers or resonance sensors.
Implementation Method 1
measuring the vibrational characteristics of an oscillating system... said resonator being excited by said vibration exciter... said motion of said resonator being a superposition of at least two harmonic motions
Data Source
AI summary
A method to measure the vibrational characteristics of an oscillating system (1) uses a control system (6, 7a, 7b, 7c). The oscillating system comprises a resonator, at least one vibration exciter and at least one sensor. The resonator is excited by the vibration exciter, and the motion of the resonator is measured by the sensor. The control system uses the sensor to control the motion of the resonator by the vibration exciter. The motion of the resonator is a superposition of at least two harmonic motions, and the control system comprises at least two subcontrollers (7a, 7b, 7c). Each harmonic motion is controlled independently by one of the subcontrollers. The harmonic motions are controlled by the subcontrollers simultaneously. A corresponding device is also disclosed.