Development technology for control systems based on the original ultrasonic model.

The Ultrasonic System Research Institute conducts consulting related to ultrasonic applications using a technology that measures, analyzes, and evaluates the propagation state of ultrasound, applying feedback analysis techniques based on multivariate autoregressive models. By organizing the measurements, analyses, and results obtained from ultrasonic testers chronologically, we establish and verify new evaluation criteria (parameters) that indicate the appropriate ultrasonic state for the intended purpose. Note: - Nonlinear characteristics (dynamic characteristics of acoustic flow) - Response characteristics - Fluctuation characteristics - Effects due to interactions By developing original measurement and analysis methods that consider the acoustic properties of the target object and surface elastic waves, we deepen our understanding of the relationships between various effects related to vibration phenomena, referencing statistical mathematical concepts. As a result, there is an increasing number of cases demonstrating that new nonlinear parameters are very effective regarding the propagation state of ultrasound and the surface of the target object. In particular, evaluation cases related to cleaning, processing, and surface treatment effects lead to successful control and improvement based on favorable confirmations.

The Ultrasonic System Research Institute has developed a new acoustic flow control technology utilizing the nonlinear vibration phenomena of surface elastic waves. Regarding complex vibration states: 1) Linear phenomena and nonlinear phenomena 2) Interactions and the acoustic characteristics of various components 3) Sound, ultrasound, and surface elastic waves 4) Low frequency and high frequency (harmonics and subharmonics) 5) Oscillation waveforms and output balance 6) Oscillation control and resonance phenomena ... Based on the above, we optimize a new evaluation method for surface elastic waves using a statistical mathematical model based on sound pressure measurement data. Ultrasonic cleaning, processing, stirring, ... surface inspection, ... nanotechnology, ... applied research ... various responses are possible. Propagation characteristics of ultrasound: 1) Detection of vibration modes (changes in autocorrelation) 2) Detection of nonlinear phenomena (changes in bispectrum) 3) Detection of response characteristics (analysis of impulse response) 4) Detection of interactions (analysis of power contribution rates)

<The Reality of Cleaning> 1: Managing cleaning equipment and cleaning solutions is difficult. In the case of cleaning devices that utilize vibrational phenomena as a physical action, the low-frequency vibrational phenomena caused by the installation of the device, along with the device's inherent vibrational phenomena, and the vibrational phenomena of the objects being cleaned and tools interact with each other, resulting in a complex change in the vibrational state. In many cases where cleaning effects are observed, nonlinear vibrational phenomena occur. To confirm nonlinearity and manage it, logical learning and an understanding of vibration measurement are necessary. As for the chemical action of cleaning solutions, in devices that utilize cleaning effects, managing the concentration of detergents is important, but measuring the concentration distribution within the tank is a challenging situation. Various distributions change due to interactions with the environment, such as liquid temperature, humidity, air temperature, and atmospheric pressure. In particular, the distribution of dissolved gas concentration has a significant impact on chemical reactions, but no methods are known to achieve uniform dissolved gas concentration. (Using the diffusivity of fine bubbles is one method.) If detergents are added but only increase the variability of the concentration distribution, it will result in greater variability in cleaning results. ....

The Ultrasonic System Research Institute applies the technology of "flow-type ultrasonic systems" utilizing the "Constructal Law" concerning flow and shape. - Application examples of flow-type ultrasonic systems - Precision cleaning of special lenses and glass components Improvement of water quality (cleaning, molecular nanonization) for cleaning and stirring liquids Surface treatment of complex shapes, wires, and powders (stress relief) Control of chemical reactions involving solvents, detergents, precious metals, and polymers Nano-level stirring, dispersion, cleaning, and processing Film shapes, large pipe shapes, etc. ... Surface modification of materials and components that were previously difficult Regarding the use of ultrasound Based on experience in observing flow, we believe we can intuitively grasp acoustic flow. Propagation characteristics of ultrasound: 1) Detection of vibration modes (changes in autocorrelation) 2) Detection of nonlinear phenomena (changes in bispectrum) 3) Detection of response characteristics (analysis of impulse response) 4) Detection of interactions (analysis of power contribution rates)