Actuator Subset Control for Noise Shaping
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Solution Overview
Problem
Conventional systems for controlling actuator elements struggle to efficiently manage the movement of actuator elements between extreme positions to produce desired physical effects, such as sound, with existing noise shaping methods failing to effectively reduce noise interference and optimize actuator performance.
Innovation Solution
A system that includes a processor to determine the optimal number of actuator elements to release and generate control commands for subsets of actuator elements, utilizing electrical connections to apply potentials that result in coordinated movement, and incorporates noise shaping to reduce noise energy within specific frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional noise shaping methods are used to control actuator elements, then the system can produce physical effects, but noise interference is not effectively reduced and actuator performance is not optimized
Solution Approach 1:
The patent divides the set of actuator elements into multiple subsets (first subsets and second subsets) and controls each subset independently with different release-order indications. This segmentation allows the system to optimize noise reduction for each subset while maintaining overall performance, resolving the contradiction between noise reduction and actuator performance.
Solution Approach 2:
The system dynamically determines the optimal number of actuator elements to release from the first extreme position at each sampling cycle, and dynamically assigns different release-order indications to different subsets. This dynamic control optimizes both noise reduction and actuator performance adaptively, rather than using fixed conventional noise shaping methods.
2Measurement precision
If the system coordinates the release of actuator elements to optimize performance, then physical effects are produced more accurately, but the control complexity increases
Solution Approach 1:
By dividing actuator elements into subsets and assigning different release-order indications to each subset, the complex control problem is broken down into manageable sub-problems. Each subset can be controlled independently with simpler logic, reducing overall control complexity while maintaining high accuracy in producing physical effects.
Solution Approach 2:
The system determines an optimal number of actuator elements to release (which may be less than the maximum available) based on current conditions. This partial action approach simplifies control by not requiring coordination of all actuator elements, thereby reducing control complexity while maintaining measurement precision through selective optimization.
3Measurement precision
If more actuator elements are released to enhance output quality, then the physical effect accuracy improves, but noise energy within frequency bands increases
Solution Approach 1:
The patent segments actuator elements into different subsets and applies different release-order indications to each subset. This allows the system to distribute the release of actuator elements in a way that enhances output quality while spreading out noise energy across different time sequences, preventing noise accumulation within specific frequency bands.
Solution Approach 2:
The system uses periodic sampling cycles to determine when to release actuator elements from the first extreme position. By controlling the timing and sequence of releases across different subsets within each sampling cycle, the system maintains high output quality while periodic distribution of release events prevents noise energy concentration in specific frequency bands.
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 system achieves efficient production of physical effects by optimizing actuator movement and noise reduction, enhancing the accuracy and quality of the physical output, such as sound, by coordinating the release of actuator elements and shaping noise spectra.
Implementation Method 1
utilizing electrical connections to apply potentials that result in coordinated movement
Data Source
AI summary
A system includes an apparatus and a processor. The apparatus includes a set of actuator elements that move between two positions. Each actuator element is comprised in: exactly one first subset out of a plurality of non-empty first subsets and exactly one second subset out of a plurality of non-empty second subsets. The processor is configured to generate one or more control commands for a group of subsets out of the first and the second pluralities of subsets in response to a number of moving elements which, if released from the first extreme position during a second sampling cycle, enables production by the apparatus during the second sampling cycle of a sound.