Settling Judgment Method for Disk Positioning Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing positioning control devices face challenges in accurately and efficiently judging settling at a target position, particularly in disk devices, where short settling judgment times can lead to residual vibration and decreased positioning accuracy, while longer times may result in data errors due to inadequate detection of positional errors.
Innovation Solution
A settling judgment method that calculates a judgment value using a predetermined formula based on position error, with a slice value set to contain the maximum amplitude ratios within a predetermined positioning accuracy, and a number of samples determined to ensure continuous judgment value satisfaction, allowing for high-speed and accurate settling judgment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the settling judgment time is shortened to improve response performance, then the processing speed is improved, but positioning accuracy deteriorates due to undetected residual vibration
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the slice value and number of samples based on the settling judgment formula's characteristics. By calculating optimal parameters from the judgment formula itself rather than using fixed experience-based values, the system achieves both fast response and accurate positioning judgment.
Solution Approach 2:
The patent implements feedback by using the settling judgment formula to continuously monitor position error characteristics and adjust the judgment criteria accordingly. The system feedbacks on the actual settling behavior and modifies the slice value and sample count to ensure accurate judgment while maintaining speed.
2Manufacturing precision
If the slice value is increased to improve positioning accuracy, then manufacturing precision is improved, but settling judgment time increases
Solution Approach 1:
The patent changes the parameter determination approach by deriving slice values and sample numbers from the settling judgment formula's mathematical properties rather than using fixed high values. This allows optimization of both accuracy and time efficiency through calculated parameter values.
Solution Approach 2:
The patent introduces dynamics by making the slice value and number of samples adjustable rather than fixed. The system can dynamically select appropriate parameter values based on the specific settling conditions and judgment formula characteristics, achieving optimal balance between accuracy and speed.
3Manufacturing precision
If the number of samples is increased to improve settling judgment accuracy, then positioning accuracy is improved, but processing speed decreases
Solution Approach 1:
The patent applies parameter changes by calculating the optimal number of samples from the settling judgment formula rather than using a fixed high number. This derivation ensures that the sample count is sufficient for accurate judgment while minimizing processing time requirements.
Solution Approach 2:
The patent substitutes the mechanical approach of simply counting fixed number of samples with a mathematical derivation approach. By using the settling judgment formula to determine the required sample number, the system replaces brute-force counting with intelligent calculation, achieving both accuracy and efficiency.
Data Source
AI summary
A settling judgment method judges whether an object is settled at a target position by using a settlement judgment formula set a slice value and number of continuous samples. The slice and number of continuous judgments of the judgment value of the settling judgment are judged by the slice value and number of samples which are set such that the maximum value of a maximum amplitude ratio (Rate), for each frequency of cyclic disturbance (Y), determined from the maximum amplitude values (Max1, Max2) of the judgment values when the cyclic disturbance is applied is contained within a predetermined position accuracy. Settlings can be judged at high-speed and accurately according to the settling judgment formula, and both an improvement of positioning accuracy and high-speed judgment can be implemented.