Physical Quantity Sensor Circuit for Adaptive Vibration Damping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing technologies struggle to effectively damp vibrations in electronic devices due to variations in resonance characteristics caused by changes in device size, material, and installation environment.
Innovation Solution
A physical quantity sensor with a circuit device that includes a resonance characteristic measurement mode to measure and a vibration-damping mode to reduce vibrations based on the measured resonance characteristics, using an actuator driven by a detection signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed vibration damping control is implemented, then the control structure is simple, but the vibration damping effectiveness deteriorates when resonance characteristics change due to environmental variations
Solution Approach 1:
The patent implements dynamic vibration damping control by continuously measuring the resonance characteristics of the electronic device and adjusting the actuator drive signal in real-time. The control parameters are not fixed but dynamically adapted to match the actual resonance frequency and amplitude, ensuring effective vibration damping despite environmental changes or device variations
Solution Approach 2:
The patent employs feedback control by measuring the actual vibration state and resonance characteristics of the electronic device, then using this information to adjust the actuator drive signal. The system continuously monitors the resonance frequency and amplitude, and modifies the damping control parameters accordingly to maintain optimal vibration suppression performance
2Ease of manufacture
If generic vibration damping is applied, then the implementation is straightforward, but the damping precision deteriorates due to variations in device size, material, and installation environment
Solution Approach 1:
The patent changes the control parameters (drive signal frequency, amplitude, and phase) based on the measured resonance characteristics of each specific electronic device. By adjusting these parameters to match the actual resonance frequency and amplitude detected during operation, the system achieves precise vibration damping tailored to each device's unique properties, regardless of size, material, or installation environment
Solution Approach 2:
The patent performs preliminary measurement of the resonance characteristics before applying the vibration damping control. By first measuring the actual resonance frequency and amplitude of the electronic device, the system prepares the appropriate control parameters in advance, ensuring that the subsequent damping action is precisely targeted to the specific device characteristics
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 solution allows for accurate and efficient damping of vibrations in electronic devices by measuring and adjusting to their specific resonance characteristics, regardless of environmental changes.
Implementation Method 1
a sensor element configured to output a detection signal corresponding to a physical quantity
Implementation Method 2
an actuator; and a physical quantity sensor including a sensor element attached to the actuator and configured to output a detection signal corresponding to a physical quantity
Implementation Method 3
a resonance characteristic measurement mode of outputting the actuator drive signal for measuring a resonance characteristic of the electronic device by vibrating the electronic device
Implementation Method 4
a vibration-damping mode of outputting the actuator drive signal for reducing a vibration of the electronic device based on the resonance characteristic measured in the resonance characteristic measurement mode
Data Source
AI summary
Provided is a physical quantity sensor attached to an electronic device provided with an actuator. The physical quantity sensor includes: a sensor element configured to output a detection signal corresponding to a physical quantity; and a circuit device configured to output an actuator drive signal for driving the actuator based on the detection signal. The circuit device has a resonance characteristic measurement mode of outputting the actuator drive signal for measuring a resonance characteristic of the electronic device by vibrating the electronic device, and a vibration-damping mode of outputting the actuator drive signal for reducing a vibration of the electronic device based on the resonance characteristic measured in the resonance characteristic measurement mode.