Inertial Sensor Resonator Startup Control via Duration Ratio
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Solution Overview
Problem
Existing methods for starting vibration in inertial rotation sensors with vibrating resonators require extended time due to short control durations, necessitating high control voltages and compromising measurement accuracy.
Innovation Solution
Modifying the control-to-detection duration ratio during the starting stage to increase control duration while maintaining detection duration just sufficient for vibration control, without altering other operating parameters, thus reducing startup time without affecting accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If control duration is increased to reduce startup time, then startup time is reduced, but measurement accuracy deteriorates
Solution Approach 1:
The patent segments the operation into two distinct stages: a starting stage with modified control-to-detection duration ratio to quickly establish vibration, and an operating stage with optimized ratio for accurate measurements. This temporal segmentation allows each stage to have parameters optimized for its specific purpose without compromising the other.
Solution Approach 2:
The patent dynamically adjusts the control-to-detection duration ratio based on the operational context. During the starting stage, the ratio is modified to favor longer control durations for rapid vibration establishment. During the operating stage, the ratio returns to optimized values for measurement accuracy. This dynamic adaptation resolves the contradiction by making the system parameter flexible rather than fixed.
2Loss of time
If control voltage is increased to reduce startup time, then startup time is reduced, but device complexity increases
Solution Approach 1:
Instead of increasing control voltage, the patent changes the temporal parameters (control and detection durations) to achieve faster startup. By adjusting the duration ratio rather than the voltage level, the system achieves rapid vibration establishment without requiring higher voltage tolerance or more complex voltage regulation electronics.
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 approach significantly reduces the time required to set the resonator into vibration while preserving measurement accuracy, allowing for efficient sensor initialization.
Implementation Method 1
an anisotropic vibrating gyrometer is constituted by an axisymmetric resonator having two degrees of freedom... two detection channels including electrostatic detectors constituted by transducers associated with the vibrating resonator
Implementation Method 2
two detection channels including electrostatic detectors constituted by transducers associated with the vibrating resonator
Implementation Method 3
an anisotropic vibrating gyrometer is constituted by an axisymmetric resonator having two degrees of freedom
Data Source
AI summary
A method of controlling an inertial rotation sensor has a vibrating resonator having control channels and detection channels. During an operating stage each control channel (C1, C2) is activated for a control duration and each detection channel (D1, D2) is activated for a detection duration, in which the control and detection durations are applied at an operating ratio. Duyring a starting stage the control and detection durations are applied at a ratio that is modified in comparison with the operating ratio, so as to increase the control duration.