Active Damper Parameter Switching for Vibration Isolation Control
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Solution Overview
Problem
Conventional vibration isolation apparatuses are unable to sufficiently suppress vibrations in devices mounted on them, as they lack effective parameter adjustment methods to accurately position movable portions driven by servo motors.
Innovation Solution
A control apparatus that stores multiple sets of candidate parameter values for adjusting vibration isolation characteristics, which continuously adjusts parameter values using a servo motor to maintain the movable portion at a command position, selecting new parameter sets when deviations exceed a threshold until the deviation is minimized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If parameter values are adjusted to suppress vibration detected in the vibration isolation apparatus, then vibration isolation characteristics are improved, but vibration in the device disposed on the vibration isolation apparatus cannot be sufficiently suppressed
Solution Approach 1:
The patent applies parameter changes by storing multiple sets of candidate parameter values with different vibration isolation characteristics and systematically changing parameters based on measured positioning deviations. The control apparatus selects optimal parameter sets from pre-stored candidates, adjusting vibration isolation characteristics through parameter optimization rather than structural modification.
Solution Approach 2:
The patent implements feedback by measuring the positioning deviation between command position and actual position of the movable portion, then using this deviation information to select appropriate parameter sets. The system continuously monitors positioning accuracy and adjusts vibration isolation parameters based on the measured deviation magnitude.
2Object-affected harmful factors
If multiple sets of candidate parameter values are stored and selected based on deviation magnitude, then vibration suppression is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-storing multiple sets of candidate parameter values in the storage unit before operation begins. This allows the system to quickly select from pre-prepared parameter sets based on real-time deviation measurements, avoiding complex real-time parameter optimization calculations.
Solution Approach 2:
The patent manages complexity through systematic parameter changes by organizing candidate parameter sets with different vibration isolation characteristics and selecting appropriate sets based on deviation thresholds. The control apparatus switches between predefined parameter sets rather than continuously adjusting individual parameters.
Data Source
AI summary
A parameter setting method includes a parameter value changing step of, when the magnitude of a deviation that is a difference between a command position and an actual position of a movable portion is greater than or equal to a prescribed value during operation of an active damper, selecting an unselected set of candidate values from among a plurality of sets of candidate values and changing the values of respective types of parameters of the active damper to the selected set of candidate values, and when the magnitude of the deviation is less than the prescribed value, not changing the values of the respective types of the parameters. After the parameter value changing step is finished, the parameter value changing step is repeated until the magnitude of the deviation becomes less than the prescribed value.