31results about How to "Increase control difficulty" patented technology

Solutions are prepared by dissolving N-(n-butyl)-thiophosphoric triamide (NBPT) in one or more N-alkyl amino alcohols, N,N-dialkyl amino alcohols, N-alkyl-N-alkoxy amino alcohols, and mixtures thereof. The solutions may be used in urea fertilizers to reduce nitrogen volatilization, or to reduce the odor of animal waste. Methods of preparing urea fertilizers and the resultant products are also described.

The invention provides a method for controlling internal defects of steel so that the steel can satisfy the requirement of ultrasonic flaw detection of the diameter of 2mm. The method controls temperature gradients inside and outside a casting blank by adjusting high-pressure water jet descaling parameters and then controls pass reduction so that deformation conditions in a rolled piece are changed, the core defects of the rolled piece are fully welded, and the internal defects of the casting blank are controlled within the diameter of 2mm to satisfy the requirement of the ultrasonic flaw detection of the diameter standard of 2mm. The method can improve the qualified rate of the ultrasonic flaw detection for steel, can reduce rolling passes, decreases the production cost and improves the production efficiency.

The invention relates to the technical field of air-conditioning systems for data computer rooms, and discloses a natural cooling system adopting reverse-flow air heat exchange for a data computer room. The natural cooling system is applied to the data computer room, and comprises a heat exchanger and a server cabinet, wherein the server cabinet is arranged in the data computer room; the heat exchanger is a reverse-flow air heat exchanger, and comprises an inner circulating air duct, an outer circulating air duct, and a heat exchange core used for carrying out heat exchange on air in the inner circulating air duct and the outer circulating air duct; and flow guide fans are arranged at an air outlet port of the inner circulating air duct and an air outlet port of the outer circulating air duct respectively. The natural cooling system further comprises a compressor refrigeration system, wherein the compressor refrigeration system comprises an indoor unit and an outdoor unit; the indoor unit is connected with the outdoor unit through a refrigeration pipeline; and an air outlet port of the indoor unit communicates with a space below a raised floor. The natural cooling system disclosed by the invention carries out refrigeration by virtue of the reverse-flow air heat exchanger in low-temperature seasons and carries out refrigeration by virtue of a compressor system in high-temperature seasons. The whole system adequately utilizes a natural cold source of outdoor fresh air for indirect heat exchange, thus saving energy and increasing efficiency.

The invention relates to a bending resistant single-mode optical fiber, which comprises a core layer and a cladding layer, and is characterized in that the cladding layer is composed of an inner cladding layer, a downwards sunk cladding layer and an outer cladding layer which are sequentially distributed from the inside out, the core layer adopts germanium-doped quartz glass or germanium-fluorineco-doped quartz glass, the inner cladding layer adopts fluorine-doped quartz glass, the downwards sunk cladding layer adopts fluorine-doped quartz glass, the difference between the relative refractiveindex difference of the core layer and the relative refractive index difference of the inner cladding layer ranges between 0.5% and 0.7%, and the difference between the relative refractive index difference of the core layer and the relative refractive index difference of the downward sunk cladding layer ranges between 0.7% and 1.1%. The invention further relates to a preparation method of the bending resistant single-mode optical fiber, which comprises the steps of preparing a core rod by adopting an axial vapor deposition method, mutually sleeving the core rod, a fluorine-doped thin quartz tube and a high-purity quartz tube to assemble an optical rod used for preparing the optical fiber, and performing high-temperature wiredrawing to prepare the bending-resistance single-mode optical fiber. The optical fiber has good bending resistance, and is convenient to manufacture, high in yield and small in additional loss brought about by bending.

The invention provides an improved rotationally stabilized contact lens design and method of designing such a lens which minimizes stabilization time of the lens while maximizing the lens on-eye comfort. The lens and the method of designing the lens utilizes and combines non-circularity and thickness differential aspects resulting in equivalent or minimized stabilization time, ease of insertion and manufacturability as well as maximum comfort that is improved over that of what either aspect can achieve independently.

The invention discloses a vehicle mode switching strategy suitable for a pure electric logistics vehicle. The vehicle mode switching strategy relates to a parking sleep mode, a pre-sleep mode, an ACC preparation mode, a power-on and power-off preparation mode, a second-gear power-on mode, a charging mode and a remote control mode. The vehicle mode switching strategy comprises the following working procedures that the vehicle is in the parking sleep mode when in the original state; in the parking sleep mode, the vehicle is aroused every one second to enter the pre-sleep mode; in the pre-sleep mode, the states of first-gear electricity and a charging gun are detected; if first-gear electricity is on, or the charging gun is plugged in, the vehicle enters the corresponding mode according to the states, otherwise the vehicle enters the parking sleep mode; and in the pre-sleep mode, if the first-gear electricity is on, the vehicle enters the ACC preparation mode. According to the vehicle mode switching strategy suitable for the pure electric logistics vehicle, the vehicle modes of the pure electric logistics vehicle are acquired. In different vehicle modes and for specific components, controlling is conducted, and thus the load rate of a vehicle control unit is lowered. By setting the vehicle mode switching strategy, the logical sequence of control over all components is fixed, and misoperation of the vehicle is avoided.

The invention provides an improved rotationally stabilized contact lens design and method of designing such a lens which minimizes stabilization time of the lens while maximizing the lens on-eye comfort. The lens and the method of designing the lens utilizes and combines non-circularity and thickness differential aspects resulting in equivalent or minimized stabilization time, ease of insertion and manufacturability as well as maximum comfort that is improved over that of what either aspect can achieve independently.

The invention relates to hot-rolled low-carbon mild steel and a production method thereof, and belongs to the field of metallurgy. The technical problem to be solved by the invention is to provide the hot-rolled low-carbon mild steel of which the elongation percentage A50 is more than or equal to 45 percent, and the production method thereof. The low-carbon mild steel comprises the following chemical compositions in percentage by weight: 0.02 to 0.07 percent of carbon, 0.15 to 0.30 percent of manganese, 0.015 to 0.08 percent of aluminum, 0.004 to 0.020 percent of titanium, less than or equal to 0.0040 percent of nitrogen, less than or equal to 3.43 of titanium / nitrogen, and the balance of iron and inevitable impurities. The low-carbon mild steel has the superior performances of low yield strength, high elongation percentage, no generation of coarse grains on the surface of strip steel, and the like, and is suitable for preparing various components requiring stamping forming.

The invention discloses a treatment bed transfer device. The device comprises a first guide rail (1) and a second guide rail (2), wherein the first guide rail (1) and the second guide rail (2) are fixed at an angle to an imaging device (13). The first guide rail (1) is arranged on the ground (15). The second guide rail (2) is arranged on the first guide rail (1) and can move along the first guiderail (1). An axial angle is between the first guide rail (1) and the second guide rail (2). The treatment bed transfer device further comprises a lifting assembly which is arranged on the second guiderail (2) and can move along the second guide rail, and an adjusting assembly which is arranged on the lifting assembly to adjust the posture of a treatment bed. A bed plate (11) is arranged on the upper end of the adjusting assembly. The problems of complex motion control of the treatment bed transfer device during a radiotherapy process and the like are effectively solved.

The invention provides a method for testing hydrogen-induced delayed fracture performance of an ultrahigh-strength automobile steel plate, which comprises the following steps of: preparing a pluralityof groups of samples for ultrahigh-strength steel to be tested; carrying out a quasi-static tensile test on the samples to obtain engineering stress-strain curve data of the samples; searching required dependent variables corresponding to the required bending stress of each group of the samples from the engineering stress-strain curve data; as for samples in each group, clamping the test sampleson corresponding bending tool clamps and loading bending stress to the samples; measuring the dependent variables of the minimum bending radius parts of the samples by using a non-contact optical measurement system DIC, stopping loading bending stress to the samples when the dependent variable measured by the DIC reaches the required dependent variable, and fastening the sample by using the bending tool clamp to realize the pre-bending of the samples; and putting each group of pre-bent samples and the bending tool clamp thereof into a hydrogen-induced delayed fracture performance test solution, and monitoring the cracking condition of the samples.

The invention relates to an efficient composite energy storage system for vehicles, which comprises a super capacitor, a super capacitor management system, a power battery, a power battery management system, a one-way DC / DC converter, a power diode, a power dissipation device, a power switch and an energy storage system controller, wherein the super capacitor management system is used for controlling operation of the super capacitor, and the power battery management system is used for controlling operation of the power battery. The one-way DC / DC converter is in parallel connection with the power diode, an anode of the power diode is connected with an output end of the one-way DC / DC converter, a cathode of the power diode is connected with an input end of the one-way DC / DC converter, the anode of the power diode is further connected with an anode of the power battery, and the cathode of the power diode is further connected with an anode of the super capacitor. A cathode of the power battery, a cathode of the super capacitor and the one-way DC / DC converter are in common ground, and the power switch and the power dissipation device which are in serial connection are further connected between the anode and the cathode of the super capacitor. The power battery management system, the super capacitor management system, the power switch and the one-way DC / DC converter are coordinately controlled by the energy storage system controller. The efficient composite energy storage system is widely applicable to energy storage systems of new energy vehicles.

The invention belongs to the technical field of electrochemical energy storage application, and particularly relates to a frequency modulation energy storage system based on charging and discharging shunt control. An energy storage management and control system performs real-time monitoring and dynamic configuration adjustment, namely, an energy storage unit composed of three or more storage battery strings and an energy storage converter is divided into two energy storage subsystems, the energy storage management and control system receives a frequency modulation power instruction sent by thepower grid dispatching through an AGC terminal, and when the charged energy storage subsystem is fully charged or the discharging energy storage subsystem completely discharges, the energy storage management and control system is real-timely monitored and determined to carry out the dynamic configuration adjustment again, so that the charging and discharging continue to be carried out effectivelyand safely in a shunt manner. The charged energy storage subsystem is charged in the process from the completion of one dynamic configuration adjustment to the next dynamic configuration adjustment,and the discharging energy storage subsystem only discharges, so that the battery damage caused by the frequent charging and discharging conversion of an energy storage battery is greatly improved, the efficiency of the energy storage system is effectively improved, and the service life of the energy storage system is prolonged.

The invention discloses a green weed control method for a zanthoxylum bungeanum garden, belongs to the technical field of weed control of zanthoxylum bungeanum, and solves the problems of influence on ecology, complex operation and high cost in the traditional technology. The method comprises the following steps: step A, classifying weeds into worst weeds and benign weeds; step B, eradicating the worst weeds in the step A, classifying the benign weeds according to water drips, eradicating the weeds in the water drips of the zanthoxylum bungeanum tree crowns, and laying a weed control cloth to control the weeds; step C, cutting the benign weeds left in the step A and the step B, and controlling the height of the weeds to be 8-10 cm; and step D, after the weeds are cut off, taking biological weed control measures. The green weed control method has the technical effects that operation difficulty of weed control in the zanthoxylum bungeanum garden is simplified, and the environment-friendly weed control method is provided.

The invention discloses a batching system for gas state materials. The batching system comprises a WF6 material feeding device, an HF material feeding device and an N2 material feeding device, which are communicated with a batching tank, wherein the WF6 material feeding device comprises a WF6 material feeding container, a WF6 surge tank, a WF6 mass flowmeter, and the batching tank, which are sequentially communicated through a pipeline and valves; the HF material feeding device comprises an HF material feeding container, an HF surge tank, an HF mass flowmeter, a standard volume tank and the batching tank, which are sequentially communicated through the pipeline and the valves; the N2 material feeding device comprises an N2 material feeding container, an N2 surge tank, an N2 mass flowmeter, a standard volume tank and the batching tank, which are sequentially communicated through the pipeline and the valves. According to the batching system disclosed by the invention, the materials can be quantitatively adjusted and supplied; the material flows fed to the separation unit and the content of the materials can be ensured to be invariable; the flow of the WF6 can be controlled by a mass method, and the flows of the HF and the N2 are controlled by a volumetric method, so that the flow control precision can be improved, and the control difficulty can be reduced; as a valve W7 and a valve N4 are utilized, the batching system can meet the requirement on high leak rate of the material.

The invention relates to an one-way stay wire type flexible prosthetic finger, which comprises a prosthetic finger body, and the interior of the prosthetic finger body is sealed and can be inflated; adriving rope is arranged on the upper surface of the prosthetic finger body, the prosthetic finger body and the driving rope are both made of flexible materials, a fixing point is arranged at the fingertip of the prosthetic finger body, one end of the driving rope is fixed to the fixing point, and the other end of the driving rope is connected with a motor. The upper surface of the prosthetic finger body is longer than the lower surface in a natural state. Only the driving ropes are arranged on the upper surfaces of the fingers for one-way pulling, and compared with the scheme that the lowersurfaces are pulled or the upper surfaces and the lower surfaces are pulled at the same time, the driving scheme cannot influence grabbing and other actions; the driving rope on the lower surface interferes with an object, so that the gripping effect and function are influenced; and more motors are needed in the scheme of simultaneously pulling the upper surface and the lower surface, so that thecost and the control difficulty are increased.

The invention provides a method for controlling internal defects of steel so that the steel can satisfy the requirement of ultrasonic flaw detection of the diameter of 2mm. The method controls temperature gradients inside and outside a casting blank by adjusting high-pressure water jet descaling parameters and then controls pass reduction so that deformation conditions in a rolled piece are changed, the core defects of the rolled piece are fully welded, and the internal defects of the casting blank are controlled within the diameter of 2mm to satisfy the requirement of the ultrasonic flaw detection of the diameter standard of 2mm. The method can improve the qualified rate of the ultrasonic flaw detection for steel, can reduce rolling passes, decreases the production cost and improves the production efficiency.

The invention discloses a batching method for gas state materials. The batching method comprises the following seven steps: feeding WF6 gas to a separation unit, vacuumizing an HF material feeding device, adjusting the leak rate of HF gas, feeding the HF gas into the separation unit, vacuumizing an N2 material feeding device, adjusting the leak rate of the N2 gas, and feeding the N2 gas into the separation unit. According to the batching method disclosed by the invention, the materials can be quantitatively adjusted and supplied; the material flows fed to the separation unit and the content of the materials can be guaranteed to be invariable; the flows of the three materials in the testing process are highly different, and the flow of the WF6 can be controlled by a mass method, and the flows of the HF and the N2 are controlled by a volumetric method, so that the flow control precision can be improved, and the control difficulty can be reduced; as a valve W7 and a valve N4 are utilized, the batching method can meet the requirement on high leak rate of the material.

The invention provides a contact piece and a connector. The contact piece comprises a body, two circles of supporting thorns are arranged on the outer wall of the body at intervals, the supporting thorns surround the outer wall of the body by a circle to form a complete and continuous whole, and when the contact piece is installed in a base of the connector, the supporting thorns are in elastic interference fit with the base. The contact piece and the connector have a certain effect of preventing radial rotation of the contact piece, have a function of blocking flow of an organic solvent, protect a butt joint end from being polluted, and ensure reliability of electric connection.

The invention discloses a vehicle mode conversion strategy suitable for pure electric logistics vehicles, including a parking sleep mode, a pre-sleep mode, an ACC preparation mode, a power-on and power-on preparation mode, a second-speed power supply start mode, a charging mode and a remote control mode; Its working process is as follows: the vehicle is in the parking sleep mode in the initial state, and wakes up every 1 second in this mode to enter the pre-sleep mode. When the electric gear is on or the charging cable is plugged in, it will enter the corresponding mode according to the state, otherwise it will return to the parking sleep mode; in the pre-sleep mode, if the first gear is on, it will enter the ACC preparation mode; etc. The present invention obtains the complete vehicle mode of the pure electric logistics vehicle, and controls specific components in different complete vehicle modes, thereby reducing the load rate of the complete vehicle controller. Through the setting of the vehicle mode conversion strategy, the logic sequence of the control of each component is solidified, and the misoperation of the vehicle is avoided.

The invention belongs to the technical field of sorting equipment, and particularly relates to a high-speed intelligent blowing sorting device and an automatic sorting method. The high-speed intelligent blowing sorting device comprises a machine base, a material conveying mechanism, a category analysis mechanism, a flow dividing and containing mechanism and an intelligent blowing mechanism, and the material conveying mechanism is arranged on the machine base; the category analysis mechanism is arranged on a conveying path of the material conveying mechanism; and the intelligent blowing mechanism comprises a control system and a blowing assembly, the input end of the control system is electrically connected with the category analysis mechanism, the blowing assembly is arranged at the output end of the material conveying mechanism, the flow dividing and containing mechanism is arranged on the machine base, and the flow dividing and containing mechanism comprises a first containing unit and a second containing unit which are sequentially arranged in the material conveying direction. Sorting and collecting are conducted in a normal conveying manner and a high-speed airflow blowing manner, the production cost is reduced, a blowing unit is low in control difficulty and easy to operate and adjust, the high-speed sorting working condition can be coped with, practicability is high, and enterprise development is facilitated.

The present invention relates to the technical field of train control, in particular to an adaptive control method for train control levels; the present invention establishes a predictive model for model predictive control calculation through an ideal train model, and can estimate the basic resistance coefficient when the train is running. During the running of the train, the basic resistance coefficient will change with the train running environment, wind speed, etc., but the present invention can resist different degrees of interference through the respective advantages of model predictive control and model reference adaptive control. And the invention establishes the prediction model based on the ideal model of the train; the relative distance braking mode is added as a constraint into the model prediction control, so as to shorten the safety distance between trains and increase the train running density.

The invention relates to a bending resistant single-mode optical fiber, which comprises a core layer and a cladding layer, and is characterized in that the cladding layer is composed of an inner cladding layer, a downwards sunk cladding layer and an outer cladding layer which are sequentially distributed from the inside out, the core layer adopts germanium-doped quartz glass or germanium-fluorineco-doped quartz glass, the inner cladding layer adopts fluorine-doped quartz glass, the downwards sunk cladding layer adopts fluorine-doped quartz glass, the difference between the relative refractiveindex difference of the core layer and the relative refractive index difference of the inner cladding layer ranges between 0.5% and 0.7%, and the difference between the relative refractive index difference of the core layer and the relative refractive index difference of the downward sunk cladding layer ranges between 0.7% and 1.1%. The invention further relates to a preparation method of the bending resistant single-mode optical fiber, which comprises the steps of preparing a core rod by adopting an axial vapor deposition method, mutually sleeving the core rod, a fluorine-doped thin quartz tube and a high-purity quartz tube to assemble an optical rod used for preparing the optical fiber, and performing high-temperature wiredrawing to prepare the bending-resistance single-mode optical fiber. The optical fiber has good bending resistance, and is convenient to manufacture, high in yield and small in additional loss brought about by bending.

The invention discloses a method of improving PM2.5 removal efficiency in an electric precipitation process of iron ore sintering smoke. The method comprises the steps of dividing the smoke generatedby sintering into sintering front section smoke (a low PM2.5 emission concentration, and mainly comprising Fe, Ca and O), sintering middle section smoke (a high PM2.5 emission concentration and mainlycomprising K, Na, Pb and Cl) and sintering rear section smoke (a low PM2.5 emission concentration and high smoke temperature), leading the sintering front section smoke and the middle section smoke into a low temperature flue and a middle temperature flue, regulating the temperature of the low temperature flue to be higher than an acid dew point and the temperature of the middle temperature flueto 180-220 DEG C via the sintering rear section smoke, spraying a smoke conditioning agent into the middle temperature flue at the same time, and removing PM2.5 from the smoke in the two flues via a conventional electrostatic precipitator. The PM2.5 removal efficiency of the electric precipitator is improved by sintering smoke segmentation, flue temperature regulating, and regulating of a PM2.5 ingredient in the smoke and specific resistance by spraying the conditioning agent.

The invention provides a system and a method for joint production of electronic chlorine and electronic hydrogen chloride, the system for production of electronic chlorine comprises a condenser, a dehydrating tower, a heat exchanger, a compressor, a chlorine light component removal tower, a chlorine refining tower and the like, and the system for production of hydrogen chloride is based on the system for production of chlorine, and further comprises a hydrogen chloride synthesis furnace, a liquefaction unit, a hydrogen chloride light component removal tower and a hydrogen chloride refining tower. According to the invention, anhydrous and oxygen-free chlorine without water and oxygen in the process of producing the electronic chlorine and external electrolytic hydrogen without water through pressure swing adsorption can be synthesized into hydrogen chloride in the hydrogen chloride synthesis furnace, the hydrogen chloride has extremely low water content,. and corrosion is avoided. By adopting the system and the method disclosed by the invention, the electronic chlorine, the electronic hydrogen chloride and the anhydrous hydrogen chloride can be produced by directly adopting electrolytic chlorine and electrolytic hydrogen, so that the raw material cost is saved; and meanwhile, a heat integration rectification technology is adopted in the process, so that energy is comprehensively utilized.

The invention provides a refrigerant cooling system and method for frequency converters, which relate to the technical field of frequency conversion air conditioners, and include: a temperature sensor collects the current temperature of a heat dissipation cold plate; a pressure sensor collects the current pressure in a liquid storage tank; During operation, the first current temperature of the heat dissipation cold plate is obtained, and when the first current temperature is greater than the first preset temperature and the inlet valve is a solenoid valve, the outlet valve and the inlet valve are controlled to open so that the refrigerant flows into the heat dissipation cold plate and the Liquid storage tank; after the refrigerant fills the liquid storage tank, obtain the second current temperature of the heat dissipation cold plate, and when the outlet valve is an electronic expansion valve and the second current temperature is less than or equal to the second preset temperature, based on the current pressure and Preset the pressure, determine the target opening and closing degree, and control the opening of the outlet valve to the target opening and closing degree, which solves the technical problems of high difficulty in controlling the refrigerant cooling system of the existing frequency converter and low service life of the valve.

The invention relates to plant illumination equipment used indoors. The plant illumination equipment comprises a master lamp tube arranged in a planting room and a plurality of slave lamp tubes electrically connected with the master lamp tube; a control module for controlling the master lamp tube and the plurality of slave lamp tubes is arranged in the master lamp tube; the master lamp tube and the plurality of slave lamp tubes can be disposed in various scenes according to different use conditions; in a goods shelf type planting place, the plant illumination equipment can be mounted on the lower side of each layer of good shelf; and for a planting room or a box-shaped planting space with a random size, which is widely used in recent years, the plant illumination equipment can be arrangedalong the corner or the side wall of planting equipment, and the master lamp tube and the plurality of salve lamp tubes form a spatial stereoscopic structure so as to provide 360-degree omnibearing illumination for plants.

The invention discloses a batching system for gaseous materials, which comprises a WF6 feeding device, an HF feeding device, and a N2 feeding device connected to a batching tank. WF6 pressure stabilizing tank, WF6 mass flowmeter, batching tank, the HF feeding device includes HF feeding container, HF stabilizing tank, HF mass flowmeter, standard volume tank and batching tank connected in sequence through pipelines and valves , N2 feeding device includes N2 feeding container, N2 surge tank, N2 mass flow meter, standard volume tank, batching tank connected in sequence through pipelines and valves. The invention realizes the quantitative adjustment and supply of each material and ensures The material flow of batching tank and respective content are stable, respectively adopt mass method to control the flow of WF6 and volumetric method to control the flow of HF, N2, control precision and control difficulty, the use of valve W7 and valve N4, make the present invention It can meet the requirements of large material leakage rate.

The invention discloses a batching method for gas state materials. The batching method comprises the following seven steps: feeding WF6 gas to a separation unit, vacuumizing an HF material feeding device, adjusting the leak rate of HF gas, feeding the HF gas into the separation unit, vacuumizing an N2 material feeding device, adjusting the leak rate of the N2 gas, and feeding the N2 gas into the separation unit. According to the batching method disclosed by the invention, the materials can be quantitatively adjusted and supplied; the material flows fed to the separation unit and the content of the materials can be guaranteed to be invariable; the flows of the three materials in the testing process are highly different, and the flow of the WF6 can be controlled by a mass method, and the flows of the HF and the N2 are controlled by a volumetric method, so that the flow control precision can be improved, and the control difficulty can be reduced; as a valve W7 and a valve N4 are utilized, the batching method can meet the requirement on high leak rate of the material.

The invention discloses a method, device, computer device and storage medium for the human-machine interaction of a balance board. The method comprises the following steps of: judging whether the matching value of the route direction of the designated position of the inclination direction and route of the balance board is larger than a first designated value; controlling a ball to roll along a designated direction if yes; controlling the ball to generate a designated response action if not. The method, device, computer device and storage medium for man-machine interaction of the balance boardhave the advantages that when the matching value of the route direction of the designated position of the inclination direction and route of the balance board is larger than the first designated value, the ball rolls along the designated direction, so that the control difficulty of a labyrinth balance board is improved, the interactivity between a user and the labyrinth balance board is enhanced,and the training effect of sensory integration is improved; the plan speed is calculated by using an objective function, so that the ball can obtain the corresponding plan speed according to the control level of the user, and the interactivity between the user and the labyrinth balance board is enhanced.