44results about How to "Realize continuous control" patented technology

The invention discloses a real-time controllable wave absorber based on ferroelectric ferromagnetic composite film loading. Including a dielectric plate (1), the front surface of the dielectric plate (1) is covered with a ferroelectric ferromagnetic composite film (2), and the surface of the ferroelectric ferromagnetic composite film (2) is provided with a metal microstrip frame ( 3), the surface of the ferroelectric ferromagnetic composite film (2) is also provided with a cross-shaped metal microstrip (4) in the center, and the cross-shaped metal microstrip (4) passes through a metal via hole (5) in the middle and is arranged on the dielectric plate (1) The metal layer (7) on the back is connected; the metal layer (7) covers the back of the dielectric board (1). The structure can adjust the wave absorption peak position of the wave absorber in real time by utilizing the characteristic that the dielectric constant and the magnetic permeability of the ferroelectric ferromagnetic composite film (2) can be continuously changed under an external bias voltage. The invention can use bias electric field or magnetic field to independently adjust the wave absorption peak position of the wave absorber in real time, and can realize low reflection loss, and has the characteristics of simple structure, flexible and controllable frequency band, and strong wave absorption ability.

The invention provides an independent control system for oil inlet and outlet with pressure compensation, comprising: a hydraulic power source (1), an overflow valve (2), an independent inlet and outlet control valve group (3), and a hydraulic actuator (5); It is characterized in that: a load selection valve (4), a new type of electronic pressure compensation valve (6) or an electro-hydraulic pressure compensation valve (7) are further added, which improves the controllability of the independent system of the oil inlet and outlet of multiple actuators, and simplifies the balance of the system. The control complexity of the multi-actuator load difference can also reduce the system cost, realize the real-time continuous regulation of the compensation pressure difference and the real-time position feedback monitoring of the compensation spool. The independent oil inlet and outlet control system with pressure compensation disclosed by the invention has the advantages of simple control, high degree of intelligence, strong applicability to working conditions, low energy consumption, fast response and the like.

The invention relates to a preparation method of mixed-phase nanometer TiO2 of different colors, the key technology of which is to heat-treat the amorphous nanometer TiO2 synthesized in one step in water phase at different temperatures. The specific method is as follows: first, Ti(SO4)2 solution and ammonia water are mixed and reacted under ice-water bath conditions to obtain TiO2 amorphous hydrate sol, which is washed by centrifugation, and then the sol is evaporated to dryness at low temperature to obtain nano-TiO2 in the amorphous phase. The evaporated amorphous nano-TiO2 solids were heat-treated at different temperatures to obtain amorphous and anatase mixed-phase nano-TiO2 with different colors. The present invention adopts the method of gradient heat treatment for the first time to prepare a series of mixed-phase nano-TiO2 of different colors. The continuous regulation of the band structure has excellent performance and positive significance in the photocatalytic degradation of organic pollutants, and has a good application prospect.

The invention relates to a variable valve lift mechanism and a control method thereof. The variable valve lift mechanism comprises a rotatable cam shaft and a cam installed on the cam shaft and further comprises a rocker arm assembly, a swing assembly and a feeding shaft. The rocker arm assembly is driven by the cam to swing and comprises a regulation and control idler wheel located on one side of the rocker arm assembly. The swing assembly is driven by the rocker arm assembly to swing so as to open and close a valve and provided with a feeding window. The feeding shaft is contained in the swing assembly in a rotatable manner and provided with a feeding groove. When the feeding shaft is rotated, the feeding groove and the feeding window are aligned or staggered. The regulation and control idler wheel makes rolling contact with the feeding shaft through the feeding window, so that the swing assembly is driven to swing. According to the variable valve lift mechanism, no phase correcting device needs to be additionally arranged, the manufacturing cost can be reduced, the valve lift amount can be continuously regulated and controlled, and power output is more linear.

The invention discloses a method and semiconductor for p-type doping of TMDCs based on PTFE, belonging to the technical field of advanced semiconductor devices. The method is as follows: transferring TMDCs material to a fluorine-containing ultra-flat PTFE substrate, thereby constructing a TMDs And the vertical heterointerface of PTFE, the interface has efficient hole doping regulation for TMDCs, by measuring the spectral structure and fluorescence lifetime of the transferred TMDCs, and characterizing the change of its energy band structure, it can be determined to realize the p-type of TMDCs Doping to obtain p-type doped TMDCs semiconductors, thus expanding the application in optoelectronic or electronic devices. The invention realizes the conversion of two-dimensional TMDCs from n-type to p-type doping at room temperature, and the adjustment effect is long-term, stable and suitable for large-scale production requirements. The method is easy to operate and has single atomic layer controllable doping accuracy. The strong electronegativity effect of fluorine compounds realizes the hole-doping type of 2D TMDCs.

The present invention provides a high efficiency supersurface device based on a catenary structure, comprising a dielectric substrate and a dielectric catenary structure from bottom to top. The invention is ingenious in design and simple in structure, and can realize high-efficiency regulation and control of electromagnetic waves through a variable-width medium catenary grating structure. The invention can be used for designing high-efficiency super-surface functional devices such as lens, beam splitting, deflection, imaging and the like, and has important significance for promoting the practicality of the super-surface.

An MgO:PPLN-based electric field tuning light parameter oscillator with a controllable crystal domain duty ratio belongs to the field of solid laser. The electric field tuning light parameter oscillator settles the following problems in an existing optical parameter oscillator: limitation by a single crystal domain duty ratio and incapability of being switched between high-precision wide tuning and high frequency conversion efficiency. According to the MgO:PPLN-based electric field tuning light parameter oscillator, an isolator performs return light isolation of pump light which is generated by a laser pump source; two flat concave lenses form a confocal optical parameter oscillation chamber; after pump light is focused by a focusing coupling system, the pump is arranged at an MgO:PPLN crystal at the common focus in the chamber; The crystal has a polarized period positive and negative crystal domain diagonal segmented structure. A driving power supply exerts a voltage on the crystal. An electric controlled precise translation platform is made to move through a computer. The crystal domain duty ratio is changed through transversely moving a light inputting position where the crystal is located. According to the MgO:PPLN-based electric field tuning light parameter oscillator, the MgO:PPLN crystal with controllable crystal domain duty ratio is used as a frequency conversion medium; and free switching between high-precision wide tuning and high frequency conversion efficiency is realized according to an actual requirement.

The invention relates to a PMAA and PAA-based hydrogel, which has an ordered lamellar structure and is made of aryl monomers with π-π stacking effect and carboxyl monomers with hydrogen bond effect. The hydrogel of the present invention controls the drug release system through hydrogen bonds and π-π stacking dual switches to realize continuous regulation of drug release; gel swelling performance test shows that the hydrogel of the present invention has excellent pH responsiveness; The drug release experiment simulating the human metabolic system shows that the drug controlled release system prepared by the hydrogel of the present invention can match the drug release with the metabolism of the human metabolic system, effectively reducing the waste of drugs and the side effects of excessive drugs on the human body .