6results about How to "Reduced performance impact" patented technology

The application discloses a preparation method of an iron-based catalyst, the iron-based catalyst and application of the iron-based catalyst. The preparation method mainly comprises three steps: firstly, a mixed solution of an iron-based precursor and an organic template agent with uniform distribution is prepared by means of stable temperature and autogenous pressure in a solvothermal process; subsequently, a weak alkaline precipitant without alkali metal is added into the mixed solution under heating to prepare an iron-based precipitate; finally, a honeycomb-shaped iron-based catalyst for ortho-para hydrogen conversion is prepared through steps of cleaning, drying, calcining, granulating, re-cleaning and activation. By adding the organic template agent, the pore structure of the catalyst is effectively improved without affecting the crystal type of the catalyst, and the performance of the catalyst is improved; and the weak alkaline precipitant without alkali metal is adopted, so that the controllability of the preparation process of the catalyst is enhanced, the influence of impurities such as alkali metal ions on the performance of the catalyst is effectively avoided, and the method has a simple process and high practical potential.

The application discloses a kind of active front wheel steering time delay feedback controller parameter time delay feasible region's calibration method, and include steps: 1) the vehicle system model of active front wheel steering feedback controller including time delay is established;2) by constructing Lyapunov-Krasovskii functional, time delay independent stability parameter region is solved;3) by Laplace transform solving system characteristic equation, obtain stability discriminant polynomial;4) it is solved to the minimum critical time delay that can be tolerated under time delay independent stability region and time delay related stability zone under different control parameter combinations of system.This application can provide reference for controller stability design, compared with traditional active front wheel steering controller without considering time delay, can more effectively judge whether system meets stability requirement, and reduce control parameter adjustment range, so as to reduce test cost in actual engineering, guarantee the stability of vehicle control system.

The utility model relates to the technical field of rehabilitation treatment instruments, and discloses a universal ice compress sleeve which comprises a straight sleeve, a side pocket is arranged in the straight sleeve, the side pocket is arranged in a concave shape and divides the straight sleeve to form a semi-surrounding structure, an adjusting belt is arranged on the outer wall of the straight sleeve, and the adjusting belt is connected with the straight sleeve. The adjusting belt is stretched and fixed towards the center of the straight sleeve from the two sides of the side pocket to form a tightness adjusting structure; wherein ice bags are filled in the side pockets. The ice compress sleeve structure capable of being used by hands and feet is formed in a straight barrel mode, the straight barrel sleeve mode can be matched with the structures of the hands and the feet, the ice bag can be disassembled and assembled in a built-in inserting bag mode, the ice bag can be recycled conveniently, and the purpose of single-side ice compress adjustment is achieved; the condition of skin stimulation injury caused by different tolerance degrees of the palm side and the back is reduced, the influence on the ice compress duration and effect of a user is reduced, and meanwhile, the straight sleeve is conveniently replaced to reduce cross infection.

The invention discloses a low-profile multi-frequency vertical polarization antenna integrated structure which comprises a U-band antenna, an L-band antenna, a C-band antenna and feed of the three antennas, a U-band antenna assembly and an L-band antenna assembly are microstrip antennas loaded with short circuit columns and are composed of media and radiation patches, and the U-band antenna assembly and the L-band antenna assembly are microstrip antennas loaded with short circuit columns. The C-band antenna assembly is a short-circuit loaded metal monopole antenna and is composed of a stepped metal structure and a dielectric layer, the three antenna assemblies all adopt short-circuit loading, the height of the antenna is reduced, the U-band antenna, the L-band antenna and the C-band antenna are sequentially overlapped from low to high, the antennas are isolated by loading media, longitudinal integration of the three antennas is achieved, and the antenna structure is compact. Wherein the U-band antenna assembly directly adopts coaxial line feeding at the center of the bottom, the L-band antenna assembly and the C-band antenna assembly are respectively connected with coaxial lines at the other two sides of the bottom through microstrip lines for feeding, and the coaxial lines penetrate through short circuit columns of the antenna, so that the influence on the structure and the performance of the antenna is reduced; the microstrip line is arranged in a dielectric layer between the antennas, and short circuit columns are loaded around the microstrip line, so that energy leakage is reduced. Integration of multi-band antennas is achieved, an effective feeding method is provided for integration of multiple antennas, and meanwhile the antenna has the advantages of being low in profile, easy to achieve and convenient to machine.

This invention discloses a foundationless construction system that uses its own weight as a reference for center of gravity adjustment, enabling the external climbing tower crane to be constructed within a shaft. The system employs a movable wedge micro-adjustment structure, where a movable component drives a strip structure to clamp the tower itself, thus adjusting the tower's load-bearing structure. Simultaneously, an arc-shaped plate structure provides bending resistance to the entire plate, minimizing the impact of individual failures of the movable component (i.e., the independent movable wedge) on the clamping action. Furthermore, elastic pads are used to reduce metal fatigue and plastic deformation caused by rigid structural collisions.

The invention provides a power supply circuit, a power supply method of components in electronic equipment and the electronic equipment, and relates to the technical field of communication. The controller firstly determines the current output voltage of the power supply end, then determines the target power supply branch to be used according to the relation between the output voltage and the voltage threshold value, and finally controls the power supply end to supply power to the assembly through the target power supply branch. Therefore, the influence of low voltage on the working performance of the component is effectively reduced, the reliability of the power supply method of the component in the electronic equipment is improved, and the user experience is improved.