4results about How to "Improve adaptive adjustment ability" patented technology

The present application relates to the technical fields of intelligent manufacturing and automation control, and discloses a kind of intelligent regulation and control methods for the wall thickness of crucible spin pressing in piezoelectric single crystal growth, comprising: collecting data in the process of spin pressing, and obtaining stable acquisition sequence by preprocessing;Stable acquisition sequence is fused by adaptive weighted fusion and Kalman filtering, and the fused wall thickness is obtained by fusing the laser thickness value and the wall thickness value and compensation value respectively mapped by the spin pressing force, torque and eccentricity;Calculate the comprehensive deviation vector of wall thickness deviation, local wall thickness thinning rate, eccentricity deviation and roundness error;Based on the comprehensive deviation vector and the wall thickness deviation, the fuzzy adaptive PID output correction value and the hierarchical threshold comparison are executed in parallel to generate pass jump and trajectory reconstruction instructions, and the closed-loop cooperative control is formed by issuing the numerical control spin pressing system;After each pass is completed, the wall thickness distribution is obtained by fusion and solution, and the deviation is determined to add compensation pass or trajectory reconstruction, and iteration is carried out until the requirements are met.The present application realizes the online intelligent closed-loop regulation and control of the wall thickness of crucible spin pressing.

The application discloses a bacteriostatic sunscreen self-dehumidifying mask, and relates to the technical field of masks.The bacteriostatic sunscreen self-dehumidifying mask is characterized by a three-layer gradient structure of a hydrophobic layer, a hydrophilic layer and a photothermal layer, synergistic effect of the three layers, efficient directional migration of water under a one-way moisture guiding mechanism, rapid evaporation and self-dehumidification realized in combination with the light-heat conversion characteristics of the photothermal layer, significant reduction of moisture accumulation in the mask, avoidance of facial moisture and bacterial breeding risks during wearing, and improvement of overall comfort and hygiene level.The air vent is located at the lower side to guide the directional circulation of air flow, reduce facial discomfort, and the user can fix the mask through a detachable plastic frame, replace the composite moisture-absorbing gel module conveniently, and ensure long-term and efficient protection.

This invention discloses a long-term hydrogen energy backup power system and control method for substations in coordination with UPS. The steps include: Step S1, system operation status monitoring and key parameter acquisition; Step S2, hydrogen production and energy storage control under normal operating conditions; Step S3, UPS instantaneous takeover under abnormal operating conditions; Step S4, hydrogen energy long-term backup power supply startup determination; Step S5, hydrogen energy long-term backup power supply startup and output preparation; Step S6, UPS and hydrogen energy long-term backup power supply power coordination access; Step S7, long-term backup power supply and key load hierarchical protection control; Step S8, abnormal operating condition monitoring and linkage protection control; Step S9, input power recovery identification and smooth system switchback; Step S10, backup power supply shutdown and system reset. This invention achieves a smooth transition from UPS instantaneous support to long-term hydrogen energy power supply for key loads in substations, improving the long-term power supply capacity, operational reliability, and low-carbon level of the backup power supply system.

This invention discloses a trajectory tracking control method and system based on UKF parameter estimation and ILC command optimization. Addressing the problems of low trajectory tracking accuracy and slow convergence caused by unknown models, time-varying parameters, and measurement noise in non-repeating time-varying systems, this invention uses unscented Kalman filtering to perform real-time filtering and parameter identification on the operating state data, estimating the system's time-varying parameters and the filtered state. Based on the filtered state, the tracking error is calculated, and the transfer matrix in the iterative learning control is dynamically updated using the estimated time-varying parameters to iteratively optimize the control commands. Simultaneously, the weight matrix and iteration step size are dynamically adjusted according to the rate of change of the time-varying parameters to generate the final control commands and drive the actuator. This invention deeply integrates UKF and ILC, achieving closed-loop linkage between parameter estimation and command optimization. It effectively suppresses measurement noise, adapts to non-repeating changes in system parameters in real time, and significantly improves the accuracy, convergence speed, and robustness of trajectory tracking.