116results about How to "Achieve continuous control" patented technology

The invention discloses a brain computer interface mouse control-based Internet browsing method, which comprises the following steps of: initializing a system; controlling a mouse to move to a target area in a browser interface based on motor imagery and P300 electroencephalogram potentials; if a target is a text input target, switching the interface to a P300 text input interface, inputting characters by using P300 signal detection, returning to the browser interface after finishing inputting the characters and writing text input results into a selected text input box; and if the target is not the text input target, judging whether to click the target or not according to the motor imagery and P300 electroencephalogram potential information, clicking the target to open a new interface if determining to click the target, otherwise, controlling the mouse to continuously move in the interface. The brain computer interface mouse control-based Internet browsing method has the advantages of high control speed, high accuracy, good effect, working stability and capacity of realizing continuous control, and can be used under the condition of irremovability of a body or the computer mouse due to external or internal factors.

The invention discloses a micro-nanostructure controlled copper-based superhydrophobic surface and a preparation method and application thereof. The copper-based superhydrophobic surface comprises micro structure arrays and nanowires, wherein center spacing of the micro structure arrays is 10 to 500[mu]m, the height of each micro structure array is 5 to 500[mu]m; the nanowires have the diameter of 40 to 200nm, the length of 2 to 50[mu]m and average spacing of 0.1 to 3[mu]m; and the nanowires grow in parallel to the direction of a local normal of the copper-based superhydrophobic surface and has the ingredient being copper oxide. The copper-based superhydrophobic surface can implement liquid droplet bouncing heat exchange of water vapor condensation and can also promote classical droplet condensation so as to reinforce heat exchange. Moreover, the micro-nanostructure controlled copper-based superhydrophobic surface can also be used for the fields of self-cleaning, corrosion resistance, ice prevention, frosting resistance and the like.

The invention discloses a system and method for realizing energy saving and temperature control of a data center by applying artificial intelligence. The system comprises a sensor, a controller and aheating, ventilation and air conditioning system. The invention further discloses the method carried out through the system for realizing energy saving and temperature control of the data center by applying the artificial intelligence. The method comprises the steps that a deep neural network and deep reinforcement learning are combined, firstly, the deep neural network is combined with a Bayesianregularization algorithm to predict the temperature comfort under multiple influence factors, and a deep reinforcement learning algorithm is combined to find the optimal adjustment scheme. The systemand method provided by the invention are used for the data center, through the deep reinforcement learning algorithm based on energy saving and the temperature, the artificial intelligence is appliedto realize energy saving and temperature control, and thus not only can the temperature requirement be met, but also consumption of the heating, ventilation and air conditioning system can be minimized.

The invention discloses a blue phase liquid crystal display with a low drive voltage and a continuously-controllable visual angle. The display is composed of an upper polaroid, an upper lambda/2 biaxial membrane, an upper lambda/2 negative wave plate A, an upper lambda/4 positive wave plate A, an upper glass substrate, a first Common electrode, a first protection layer, a blue phase liquid crystal layer, a second protection layer, a Pixel electrode layer, a transparent protrusion layer, a second Common electrode, a lower glass substrate, a lower lambda/4 negative wave plate, a lower lambda/2 positive wave plate A and a lower polaroid. The Pixel electrode layer comprises a first Pixel electrode 8 and a second Pixel electrode 9, wherein the first Pixel electrode 8 and the second Pixel electrode 9 are parallel to each other and are arranged at an interval. The blue phase liquid crystal display effectively reduces the drive voltage, and achieves continuous control over the visual angle by adjusting the voltage relation of the first Common electrode and the second Common electrode, and the drive voltage of the blue phase liquid crystal display is below 15 V and even below 10 V.

The invention provides a train control method and a train control system based on moving block. The method comprises the following steps of determining the starting end position information of a guiding route and the terminal position information of the guiding route when receiving a guiding route command; and adding the starting end position information of the guiding route and the terminal position information of the guiding route into real-time train permission information and sending the information to vehicle-mounted equipment, wherein the vehicle-mounted equipment controls a train to operate to enter into a guiding route area according to the real-time train permission information. According to a technical scheme, the train is controlled continuously by a heavy load moving block system in the presence of the guiding route, so that the operating safety of the train is guaranteed while the operating efficiency and the degree of intelligence of the train are improved.

The invention discloses a full-automatic continuous adjustable extractor hood adopting a capacitance-type sensor. The full-automatic continuous adjustable extractor hood comprises an extractor hood shell, and a capacitance-type sensor, a fan and a speed control circuit which are arranged in the extractor hood shell, wherein the capacitance-type sensor comprises a body base which is internally provided with a first cavity and a second cavity, and a sensor shell matched with the body base; the bottoms of the first cavity and the second cavity are communicated, liquid insulating media are filled inside the first cavity and the second cavity; the height of the first cavity is more than that of the second cavity, the liquid level sectional area of the liquid insulating media is less than that of the second cavity; the first cavity is communicated with atmosphere through an atmosphere inlet in the top, two parallel opposite electrode plates are arranged inside the first cavity along a height direction; the second cavity is communicated with a public flue through a flue gas inlet in the top; and the electrode plates are used as output ends of the capacitance-type sensor and connected with the input end of the speed control circuit, the output end of the speed control circuit is connected with a motor, and the output end of the fan is communicated with the public flue.

The invention discloses a pre-pickling acid liquor circulation system and a pre-pickling acid liquor circulation method for hot-rolled stainless steel strip steel. The system comprises an acid mixing pickling circulation tank, a sulfuric acid pickling circulation tank, a heat exchange device, and a pickling bath; an outlet of the acid mixing pickling circulation tank and an outlet of the sulfuric acid pickling circulation tank are connected with a liquor inlet of an acid liquor circulation pump; a liquor discharge port of the acid liquor circulation pump is connected with an inlet of the heat exchange device; an outlet of the heat exchange device is connected with an inlet of the acid mixing pickling circulation tank, an inlet of the sulfuric acid pickling circulation tank, and an acid inlet of the pickling bath; and an acid discharge port of the pickling bath is connected with the inlet of the acid mixing pickling circulation tank and the inlet of the sulfuric acid pickling circulation tank. The circulation system is simple and practical; and by the circulation system, investment cost is reduced, the pickling parameters can be controlled continuously, the forming amount of sludge in a solution can be reduced, and the pickling effect can be improved.

The invention is a flow measuring and control method for measurable and controllable electromagnetic valves, belonging to the automation technical field. And the invention firstly makes measurable and controllable flow electromagnetic valve, signal processing controller and power switch compose a flow measuring and control system, where the measurable and controllable flow electromagnetic valve transmits pressure difference between upper and lower valve fluids to the pressure input port of a pressure difference sensor so that the fluid pressure difference is converted through the pressure difference sensor into fluid pressure difference electric signal to output to the input end of the signal processing controller, the signal processing controller calculates the current detected flow according to the input fluid pressure difference and the output current of an electrified coil and compares it with the given flow to output control instruction to change the current of the electrified coil so as to control the valve opening and achieve the purpose of flow control. And the invention implements integration of flow measurement and control, and can conveniently control regulating rule of the valve opening by algorithm.

The invention discloses an island stability control method of flexible DC applied to an electromagnetic looped network. The control method relates to coordination control and action sequence cooperation of the flexible DC and a second defense line and a third defense line. The method comprises the steps of firstly, estimating an active balance of a system on the basis of the frequency changing rate at a fault island moment, judging and confirming implementation of stability control measures of the flexible DC and the second defense line according to the active balance and complementing an implementation deviation of the second defense line measure by use of the characteristic that island frequency voltage can be dynamically regulated by the flexible DC in a bidirectional manner; and finally restoring the stability of an island system through the coordination control of the flexible DC and the third defense line for the condition that the stability of the system still cannot be restored after the coordination control of the second defense line and the flexible DC. By the island stability control method, the quantity of implementing measures of the second defense line and the third defense line is reduced and the implementing measures of the second defense line and the third defense line are continuous and controllable, so that the island frequency voltage stability and the operating economy are improved.

The invention relates to a multi-freedom-degree hydraulically-driven mechanical hand used for carrying in workshops. The mechanical hand has five freedom degrees and comprises a hand clamping mechanism, a wrist rotation mechanism, a telescopic arm mechanism and a machine body mechanism. The machine body mechanism comprises a base, a rotation cylinder, a lifting cylinder and a rotation arm. The rotation cylinder is arranged on the lifting cylinder. The hand clamping mechanism comprises grippers and a linear clamping hydraulic cylinder for driving the grippers to do clamping movement. The telescopic arm mechanism is a double-guide-rod telescopic arm structure. The wrist rotation mechanism is arranged at the front end of the telescopic arm mechanism and used for connecting the hand clamping mechanism with the telescopic arm mechanism and achieving rotation movement of the hand clamping mechanism. The hydraulically-driven mechanical hand can achieve space movement of five freedom degrees, overcomes the defects of an existing mechanical hand, is simple in structure, has the performance of controllability, adjustability, excellent performance, output flexibility and the like, can conduct operation under more environments instead of manual work, and improves the work efficiency.

The invention discloses a vertebral body expansion balloon catheter comprising a balloon, an outer tube, an inner tube and a support guide wire; a near-end of the balloon is fixed on an outer wall of the outer tube; the outer tube is communicated with the balloon and pressurizes for the balloon; the inner tube is installed inside the outer tube in a penetrating mode; the inner tube comprises a straight section and a far-end flexible bending section; the flexible bending section extends out from the outer tube and is fixedly connected with the far-end of the balloon; the support guide wire is slidingly contained inside the inner tube; the flexible bending section is kept straight when the support guide wire is inserted and returns bent when the support guide wire is extracted. The flexible balloon structure can effectively support a vertebral body cavity by expanding the balloon, and vertebral body height can be well restored by inserting one-side balloon conduit. Besides, the continuous control of the degree of curvature of the balloon can be achieved by controlling the degree of extraction of the support guide wire from the flexible bending section and associated control devices.

The invention discloses a universal test bench and a test control method for comprehensive performance of a railway vehicle brake system. The universal test bench comprises an air compressor, a main blast pipe, a pressure regulating valve, a brake control blast pipe, a brake controller, a control console, a brake pipe, an air control valve, an auxiliary air cylinder, an auxiliary air cylinder pipe, an accelerated release air cylinder, an accelerated release air cylinder pipe, a brake cylinder pipe, a brake cylinder, wheel sets, brake shoes, a brake force sensor, a motor, a coupler, a rail wheel group, a pedestal, an axle box, an axle box pull rod, springs, bearing beams, loading frames, balance weights, linear bearings, loading poles and mounting racks. By establishing the related universal test bench for the comprehensive performance of the railway vehicle brake system, a lot of test researches are carried out for different brake control conditions, so as to master the influences of different brake machines, brake parameters, vehicle axle weights, brake shoe materials and the like to the brake comprehensive performance of trains, thereby providing important test places and reference frames for research and development of railway vehicle brake machines and foundation brake gears.

The invention relates to a power distribution network load control technology, and in particular to a power distribution network feeder level load power control method based on model predictive control. The method comprises the following steps: establishing a load voltage/active power coupling characteristic model according to on-site measured data, and establishing a feeder level load control model based on a DVR device by utilizing the coupling characteristic model; establishing a source load tracking model based on pre-scheduling- real-time control framework; in the pre-scheduling process,judging the starting and stopping conditions of the DVR according to the predicted value of the power of the next network point, and the real-time control tracking value is calculated by establishinga power flow optimization model containing multiple DVRs; in real-time control, firstly, carrying out ultra-short-term prediction on the power of a lower network point according to a controlled autoregressive integral moving average model; and then using a model prediction control algorithm for carrying out rolling optimization solution on the voltage regulation amount of the DVR. According to themethod, the influence of the DVR on the power distribution network is reduced in the control process, the adjustable capacity of the load is fully utilized, the adjustment range is expanded, and thepossibility is provided for large-scale photovoltaic access to the power distribution network.

The invention discloses an overcurrent detection circuit. The overcurrent detection circuit includes a detecting resistor (RSENSE) for sampling a working current of a system under test, and a voltage comparator which is provided with an overcurrent threshold value (U2); the overcurrent detection circuit is characterized by further comprising a current source (IB), a voltage source (Vcc), an overcurrent threshold value setting resistor (RSET), a delay capacitor (COCT), a discharge resistor (RDIS), a first N-type MOS tube (M2A), a second N-type MOS tube (M2B) and a third N-type MOS tube (M2C) which form a current mirror, a fourth N-type MOS tube (M3A) and a fifth N-type MOS tube (M3B) which form another current mirror, a first P-type MOS tube (M1A) and a second P-type MOS tube (M1B) which form still another current mirror. The overcurrent detection circuit of the invention improves the overcurrent fault response speed of the system under detection and test.

The invention discloses a molten salt for chemical tempering of dental glass ceramics and a use method thereof. The molten salt comprises, by mass, 85% to 95% of KNO3, 3% to 11% of CH3COOK, 1 to 6% ofKCl and 0.5% to 2% of Al2O3. The method comprises: pre-burying a sample in the molten salt, carrying out heating in a furnace at a heating rate of 1-10 DEG C/min and keeping the temperature of 420-500 DEG C for 0.5-4h. The molten salt can protect the surfaces of the dental glass ceramics, greatly shorten the ion exchange time, has excellent mechanical properties such as bending strength, fracturetoughness and hardness after chemical tempering, also has good chemical stability and biocompatibility and can be used for dental all-ceramic restoration materials.

The invention discloses a direct-current inter-electrode breaking device which comprises a transfer branch, at least one positive electrode isolation branch and at least one negative electrode isolation branch. The transfer branch is formed by serially connecting at least one transfer unit and at least one ground potential voltage coupling device in a same direction, and the ground potential voltage coupling devices are arranged at positions, close to ground potential, of the transfer branch and output voltage opposite to polarity of the transfer branch. The invention further discloses a control method based on the direct-current inter-electrode breaking device. The direct-current inter-electrode breaking device is parallelly connected between a positive electrode and a negative electrodeof a medium-and-high-voltage direct-current line; when the direct-current line is in a fault, the fault can be isolated, and fault current can be broken; when the direct-current line is with overvoltage, excessive energy can be consumed; the device has functions that a direct-current circuit breaker and a direct-current chopper and is quite high in performance-cost ratio and is easy to realize, and the problem of high-voltage energy taking is solved.

The invention discloses a metamaterial, which comprises a reflection layer and an electrically controllable metamaterial unit array, wherein the electrically controllable metamaterial unit is arrangedon the top of the reflection layer and comprises a plurality of periodically arranged electrically controllable metamaterial units; and each electrically controllable metamaterial unit comprises a first dielectric layer arranged on the top of the reflection layer, a liquid crystal layer arranged on the top of the first dielectric layer, a second dielectric layer arranged on the top of the liquidcrystal layer, and a metal microstructure arranged on the top of the second dielectric layer; and the metal microstructure comprises an annular metal sheet which is provided with an opening. By use ofthe metamaterial, on a premise that the geometric parameters of a structural material are not changed, the continuous control of electromagnetic parameters can be realized in one section of quite wide frequency band range.