81results about How to "Response speed block" patented technology

The invention discloses a non-cooperative target satellite acquisition device and an acquisition method, and belongs to the technical field of aerospace. The non-cooperative target satellite acquisition device includes an outer shell, two four-link capturing pawl mechanisms, four horizontal locking mechanisms, a screw rod and a controller; the two four-link capturing pawl mechanisms are arranged in the outer shell face to face, and the lower parts thereof are fixedly connected with an installing bottom plate; the lower end of the screw rod crosses through the installing bottom plate, and the lower end thereof is connected with a driving mechanism; four horizontal locking mechanisms are respectively located at outside of the two four-link capturing pawl mechanisms, and every two horizontal locking mechanisms are installed on the upper part of the outer shell; both sides of the upper part of the four-link capturing pawl mechanisms are respectively equipped with pressure lever mechanisms; when the four-link capturing pawl mechanisms are descended, the pressure lever mechanisms compress the horizontal locking mechanism to horizontally glide towards inside; the top part of the outer shell is equipped with a photoelectric sensor, and the photoelectric sensor and the driving mechanism are electrically connected with the controller. The non-cooperative target satellite acquisition device is widely applied to the acquisition of various space crafts, and the non-cooperative target satellite acquisition device is wide in application range, big in tolerance, quick in response speed, high in reliability, and others.

A display unit includes data lines, first scan lines, second scan lines, light emission control lines and pixels, where each pixel is connected to a corresponding data line of the data lines, a corresponding first scan line of the first scan lines, a corresponding second scan line of the second scan lines and a corresponding light emission control line of the light emission control lines; a scan driver configured to transfer first scan signals to the first scan lines, and transfer second scan signals to the second scan lines, respectively; a data driver configured to transfer data signals to the data lines, respectively; and a light emission control driver configured to transfer light emission control signals to the light emission control lines, respectively, in which the scan driver transfers the second scan signals substantially simultaneously to at least two second scan lines among the second scan lines.

The invention relates to a voltage collecting circuit for monomer batteries of a battery pack. After voltages of the monomer batteries of the power battery pack are isolated and sampled by employing a solid-state relay, a signal conditioning and isolating circuit and a microcontroller in a matching manner, the voltages are fed into an A/D (Analog-to-Digital) passage of the microcontroller for analog-to-digital conversion; the microcontroller is used for rapidly controlling two paths of solid-state relays connected with two electrodes of any monomer battery to operate at the same moment, thus, a terminal voltage of the corresponding monomer battery can be obtained on a sampling bus; simultaneously, as for electrical security, a terminal voltage signal, obtained from the battery pack, of the monomer battery needs to be isolated by an isolation amplifier, then can be input to the A/D passage of the microcontroller; and the process above is suitable for the voltage collecting circuit for the monomer batteries of the power battery pack. The circuit is low in cost, simple and practical, as well as safe and reliable.

The present invention provides a vibrating motor, which includes a casing, a vibrator and a stator housed in the casing, one of the vibrator and the stator includes a solenoid, and the other includes a magnetic circuit structure. The magnetic circuit structure includes: a first magnet part and a second magnet part respectively arranged oppositely at two sides of the solenoid; a third magnet part and a fourth magnet part respectively arranged oppositely at both ends of the solenoid. Compared with the related art, the vibration motor provided by the present invention has a magnetic circuit structure surrounded by four magnet parts, and the solenoid is arranged in the accommodation space surrounded by the four magnet parts, so that the magnetic force line is along the long axis direction of the solenoid. The two ends on the top are gathered, so that the driving force of the vibrator at the initial position is the smallest, and the driving force on both sides increases non-linearly. However, the driving force at the initial position is still more than twice the driving force generated by the traditional magnetic circuit structure, making the The response speed of the vibration motor is fast, the acceleration is large, and the frequency bandwidth is wide.

The invention belongs to logistics sorting and conveying equipment and particularly relates to an automatic sorting device for objects and a control method thereof. The sorting device comprises object information reading equipment, a belt conveyor, pushing mechanism and an automatic control module, wherein a plurality of markers or marker points are arranged at intervals along the belt length direction on the belt face of the belt conveyor, and a marker detection sensor for detecting the markers or the marker points is arranged above the belt face; and the pushing mechanisms are arranged in a direction of a reciprocating motion in a width direction of the belt face above the belt face. Objects on the conveyor belts are in one-to-one correspondence with the markers or the marker points. The positions of the objects on the conveyor belts are detected in real time by way of counting the markers or the marker points, so that real-time accurate detection can be realized, the reliability of sorting equipment is improved, reworking is avoided, and the work efficiency of logistics industry is greatly improved.

An AlMgFe alloy deoxidant contains Al (40-95 wt.%), Mg (5-20) and Fe (rest). Its advantages are direct application in molten steel, high desulfurizing power and low cost.

The invention relates to a composite retarded acid for carrying out acidification on an oil-water well in the oil-field development, which comprises the following raw material components in part by mass: 10 to 40 parts of hydrochloric acid, 2 to 10 parts of hydrofluoric acid, 2 to 10 parts of phosphoric acid, 2 to 6 parts of citric acid, 0 to 10 parts of methyl alcohol, 0 to 5 parts of mutual solvent, 0.5 to 5 parts of demulsifying agent, 5 to 15 parts of acidizing corrosion inhibitor and 30 to 70 parts of water. The composite retarded acid of the invention realizes low damage or no damage inthe acidification process and improves the intrinsic permeability of an acidification band furthest.

The present invention relates to steel making deoxidant technology, and is especially Al-Mg-Ca-Fe alloy as one kind of composite deoxidant and its preparation process. The Al-Mg-Ca-Fe alloy consists of Si 0-1 wt%, Al 20- 50 wt%, Mg 1-6 wt%, Ca 1-6 wt% and Fe and inevitable impurity for the rest. The preparation process includes the following steps: 1. weighing material including industrial aluminum ingot containing 95-98 wt% Al in 26-56 wt%, metal magnesium containing 90-98 wt% Mg in 2-10 wt%, calcium powder containing 75-90 wt% Ca in 2-10 wt%, and waste steel in 40-50 wt%; and 2. smelting with the said materials. The composite deoxidant is fine in crystal structure, hard, low in smelting point and great in specific weight, and may be used in smelting low alloy steel and carbon steel with O content lower than 25ppm, S content lower than 0.02 %, tensile strength of 50-80MPa and elongation at break of 5-10 %.

The invention relates to the technical field of failure analysis for a power device, and relates to a method for positioning a failure of a power device. The increase of leakage current is one of themain electrical representation forms of a failure of the power device, and the service life of the device is greatly reduced. The invention provides a method for positioning a failure of the power device. The method comprises the steps of unpackaging a failure power device sample; placing the unpackaged power device on an object stage; fixing and adjusting an infrared thermal imager so as to enable a display screen of the infrared thermal imager to just accommodate a chip; performing voltage bias on the power device to find bias voltage with the hotspot being the clearest; applying the constant bias voltage to the power device, and acquiring a surface thermogram of the chip; and superimposing the thermogram and a physical structure diagram of the chip so as to accurately position abnormalleakage current. The method is convenient to implement, and can accurately capture a hotspot and position the failure location.

The invention discloses a method for preparing an acetic acid and an acetic anhydride respectively and synchronously, which is characterized in that: a methanol, a methylacetate or a mixture of the methanol and the methylacetate and a mixed gas of carbon monoxide and hydrogen are reacted at 150 to 250 DEG C and 2.0 to 6.0 MPa; and a catalyst system used in the reaction comprises a mixture of rhodium or one of rhodium compounds and iridium or one of iridium compounds, a methyl iodide, at least one selected from mixtures of an amino acid and an amino acid derivative, the amino acid or the aminoacid derivative, and an accelerant. The method for preparing the acetic acid and the acetic anhydride in the invention has the advantages of: (1) reducing the generated tar, (2) reducing substance content of the acetic anhydride product, and (3) improving the stability of the catalyst system in the invention and avoiding the precipitation phenomenon. Due to the fact that the reaction system has no water, the corrosion to devices is also reduced.

The invention provides a doubly-fed fan optimization method based on a proportional integral differential control thought, which aims to optimize control parameters of the existing doubly-fed wind power generation system and complete maximum power point tracking, so that the economical efficiency and safety of system operation are optimal. The optimization method based on the proportional integraldifferential control thought comprises a proportional-integral-derivative optimization method, a fractional-order proportional-integral-derivative optimization method, an active disturbance rejectionoptimization method and a fractional-order active disturbance rejection optimization method. The methods can optimize proportional-integral controller parameters in a control system to enable the deviation value to be minimum, improve the controller response time and improve the control precision. The optimization method based on the control thought and the classic structure of the doubly-fed fanare integrated, and controller parameters are optimized through the optimization method based on the control thought, so that the control deviation of the system is minimum, and an operation curve isapproximate to a maximum power curve.

The invention discloses a statistical computing-based website search engine optimization method and system, which are used in the technical field of webpage search. The method sequentially comprises the steps of performing statistics on website traffic and input words to compute a title and description information of a website page; and applying the computed title to a link text of a url, and during search, and calling a new url automatically provided by the system through a webpage program to enable a user to quickly search out a required webpage. The system comprises an automatic computing unit and a link unit that correspond to the steps in the method. Only when a website is online, a rule is set and the system can automatically perform computing and generation of the title and brief introduction information according to the input words of the webpage or searched keywords; and the whole process runs fully automatically without manual intervention, so that the response speed is high and the time is saved.

The invention discloses a high-quality LED manufacturing method which comprises the following steps of S1) silicon chip inspection; S2) silicon chip cleaning; S3) silicon chip polishing; S4) diffusion; S5) thermal oxidation; S6) photo-etching; S7) alloy sintering; S8) vacuum film coating; S9) angle making in the inclined side; S10) welding; S11) pickling; S12) solidification of white glue; S13) moulding; and S14) post treatment. The method is reasonable in design, a selective diffusion area is etched in a silicon dioxide layer of a silicon chip by thermal oxidation, impurities can be diffusedto the silicon chip in the area, a pneumatic (non-contact) measuring instrument is used for measurement to avoid damage on the surface of the silicon chip, and improve the quality of the raw materialsilicon chip fundamentally, and via silica mechanical polishing, SiO2 colloid generates mechanical friction on the silicon chip, and polishing is used to remove the surface damage layer.

The invention relates to a high-precision large-pressure-reduction-ratio automatic pressure-regulating gas pressure-stabilizing and pressure-reducing combined valve. A two-stage pressure-reducing structure is adopted, and high-precision output of pressure is achieved. A mechanical pressure-reducing valve is adopted for the first stage, and an electrical proportional pressure-reducing valve is adopted for the second stage. A reverse unloading type main body structure is adopted for the first-stage pressure-reducing valve, the pressure force of falling-in opening pressure acting on a valve is balanced, and thus the influence of gas source pressure fluctuation is reduced; and for the problem of high upstream pressure, a metal diaphragm type structure is adopted for the first-stage pressure-reducing valve, and thus the pressure resistance is improved. A main body form of an electromagnetic proportional valve is adopted for the second-stage pressure-reducing valve, a reverse unloading type structure is adopted for a valve body, and thus interference of inlet pressure is further reduced; and meanwhile, a driving element of a proportional electromagnet is adopted, and thus the stability of output pressure is ensured on the premise of ensuring the flow.

The present invention discloses a control method, a system, and a device of a doubly-fed motor system and a readable storage medium. The control method comprises the following steps: establishing a doubly-fed motor mathematical model according to a vector control strategy of the doubly-fed motor system, and obtaining system state equation(s); judging the fact that whether the doubly-fed motor system is in a chaotic state according to parameter(s) of the doubly-fed motor system; if the doubly-fed motor system is in the chaotic state, decoupling the system state equation(s), and obtaining decoupled multi-model composite state equation(s); and establishing control variable(s) according to the multi-model composite state equation(s), inputting the control variable(s) into the multi-model composite state equation(s) to control the doubly-fed motor system to separate from the chaotic state. According to the control method, the control variable(s) are established via the multi-model compositestate equation(s), and the doubly-fed motor system is controlled by using the control variable(s), so that the doubly-fed motor system in the chaotic state can separate from the chaotic state rapidlyand converge stably and rapidly. Compared with the prior art, the control method has the advantages of fast response rate, high control precision and strong robustness when the control method is usedfor controlling the doubly-fed motor system.

Provided is an input circuit having hysteresis characteristics that is capable of operating in a wide range of power supply voltage conditions while suppressing power supply voltage dependence of a hysteresis voltage and a response speed. The input circuit is provided with: a circuit for obtaining a small hysteresis voltage under the condition of low power supply voltage (formed of PMOS transistors (101 to 103) and an inverter (501)); and a circuit for obtaining a large hysteresis voltage under the condition of low power supply voltage (formed of PMOS transistors (101 and 104) and the inverter (501)).

An insulating tube has one end and another end. An An avalanche photodiode (APD) is provided outside the one end of the insulating tube. The another end of the insulating tube is air-tightly connected to an outer flange through a stem inner wall. Capacitors electrically connected to the APD are provided in the insulating tube. The capacitors remove direct current components from signals that the APD generates when detecting electrons. By providing the capacitors in the insulating tube, response of output signals can be prevented from being impaired.

The invention relates to a manufacture method of a liquid crystal display element, a polymer composition and a liquid crystal display element. The manufacture method of the liquid crystal display element has features of wide visual angle, quick response speed of the liquid crystal molecule, excellent display property and long-time reliability, characterized in that: the method comprises the following steps: respectively coating a polymer composition containing (A) at least one polymer selected from a group consisted by a polyamic acid and a polyimide and (B) a special compound using a bi(methyl)acrylate with a biphenyl structure as the representation on a conductive film of a pair of substrates with the conductive film, so as to form a coating film; making the coating films of the substrates opposite to each other by the liquid crystal layer to form a liquid crystal box; irradiating the light on the liquid crystal box when the voltage is applied between the conductive films of the substrates.

The invention discloses a non-contact double-passage flow blocking device. A housing is disposed outside a box and fixed to the box. The housing is provided with two locking slots side by side for locking pipelines. The groove bottoms of the locking sots are communicated with an inner cavity of the housing. The box is internally provided with a fixing plate corresponding to the housing in position. A motor fixing block is mounted on the fixing plate. A motor is mounted on the motor fixing block. An output shaft of the motor extends into the motor fixing block and is connected with the inner end of a coupling. The outer end of the coupling extends into the inner cavity of the housing, and a blocking device for controlling connection and disconnection of two pipelines is disposed at the outer end of the coupling. The non-contact double-passage flow blocking device is simple and compact in structure, low in production cost, small in size and good in reliability, and operating efficiency can be effectively improved; a control portion does not contact a liquid or gas controlled, the risk of pollution and foreign matters is substantially reduced, and reusing is facilitated.