42results about How to "Simple structure control" patented technology

The invention discloses a preparation method of a nitrogen-rich covalent organic framework material connected by full conjugated carbon-carbon double bonds, and relates to the technical field of covalent organic framework material preparation. The method comprises the following steps: adding 1,3,5-trimethyl-2,4-dicyanopyridine, 2,4,6-tris(p-aldehyde phenyl)-1,3,5-triazine, anhydrous piperidine andanhydrous N,N-dimethylformamide into a pressure bottle, carrying out a reaction of the materials by heating under argon gas protection, collecting a solid by a vacuum filtration method after the reaction is completed, washing the solid with dichloromethane and water, and collecting the solid and then performing vacuum drying for 24 h to obtain a yellow solid product, namely the nitrogen-rich covalent organic framework material connected by full conjugated carbon-carbon double bonds. The preparation method has the advantages of simple equipment, convenient operation, simple and easy synthesissteps and low cost, and the prepared material has a regular pore structure, rich active sites, and efficient electron conduction capability.

The invention belongs to the field of pulse power generators and discloses a permanent-magnet axial-flux semi-hollow pulse power generator comprising a rotor, a stator, a rotating shaft, a housing, and an end cap. The rotor comprises inner and outer magnetic poles, a permanent magnet and a compensation plate. The permanent magnet is arranged between the inner and outer magnetic poles of the rotor. The inner and outer magnetic poles cooperate with the permanent magnet to convert radial flux into axial flux. The compensation plate covers the tops of the inner and outer magnetic poles. The rotor rotates together with the rotating shaft. The stator is formed by pouring non-magnetic material on a winding and is fixed on the housing. The magnetic conductive material of the rotor and the non-magnetic conductive material of the stator form a semi-hollow structure. The semi-hollow pulse power generator simplifies a motor excitation system, reduces excitation loss, and increases motor efficiency. Brushless structure increases the reliability of the motor.

The invention belongs to the field of high polymer materials, and relates to polysiloxazane. The polysiloxazane is composed of a structural unit I represented by a formula (a) or/and a formula (b) anda structural unit II represented by a formula (c) or/and a formula (d), wherein R1 and R2 are the same or different and are selected from hydrogen, C1-C20 alkyl, vinyl, phenyl, allyl or trifluoropropyl, R3 and R4 are selected from hydrogen and C1-C20 alkyl, vinyl, phenyl, allyl or trifluoropropyl, R3 and R4 are not hydrogen at the same time, R5 and R6 are selected from H, methyl, ethyl, propyl orphenyl, m, n, p and q are integers from 1 to 1000, and the values of m, n, p and q are the same or different.

The invention relates to the technical field of 3D measurement, and provides a cosine fringe field projection module. The cosine fringe field projection module is particularly suitable for being usedin miniaturized 3D measuring equipment. According to the cosine fringe field projection module, binarized cosine patterns are adopted, the problem of inaccurate transmittance in the process of manufacturing a transmission-type cosine optical grating is solved, and meanwhile the manufacturing cost is greatly reduced; the four binarized cosine patterns satisfying a 90-degree phase shift relationshipare designed on a same negative film, and then through a projection imaging camera lens and an expansion camera lens, in cooperation with a channel selection circuit, four cosine fringe fields satisfying four-step phase shift are obtained. The cosine fringe field projection module is simple in structure and control, small in size and particularly suitable for 3D measuring equipment requiring whole-machine size miniaturization; meanwhile, based on the simple structure and control and low-cost components, the cost of the projection module is far lower than that of a programmable projection method.

The invention relates to an atmosphere plasma processing device suitable for an aspheric optical element with large caliber, and belongs to the field of optical processing. The atmosphere plasma processing device aims to solve the problem that the conventional mechanical polishing technology is low in processing efficiency and cannot meet the large-batch requirements on optical elements with large caliber in the optical field. A rotary electrode of the atmosphere plasma processing device is arranged in a sealing hood and is connected with the output end of a radio frequency power supply to be used as an anode for atmosphere plasma discharge. The upper end of the sealing hood is connected to a work shaft in an insulating manner, and an optical element to be processed is clamped on a work platform. The work platform is grounded as the cathode for atmosphere plasma discharge. A discharge gap is formed between the rotary electrode and the surface to be processed of the optical element to be processed. The atmosphere plasma processing device can be used for carrying out non-contacted atmosphere plasma processing on the aspheric optical surface with large and high in processing speed, and the edge effect is avoided.

The invention discloses a power amplifying device and a linear adjuster. The power amplifying device comprises a first transistor, a second transistor and a driving circuit of the second transistor, wherein the first transistor and the second transistor are connected in series; the driving circuit of the second transistor comprises a third transistor, a compensating network and a voltage source; the first end of the third transistor is connected with a driving signal end and the first transistor respectively; the second end of the third transistor is connected with a connecting end between the first transistor and the second transistor; the third end of the third transistor is connected with the second transistor and the compensating network respectively; the compensating network is also connected with the voltage source. By the adoption of a push- pull structure composed of double N-shaped transistors provided by the invention, without transformer coupling and independent control on the upper and lower transistors, the characteristics of simple structure, simple control, high efficiency and the like can be realized, and the defect that an existing linear adjuster is inapplicable for a great-bandwidth and large-power application site or more problematic can be overcome.

The invention provides a testing device for a memory chip in a hybrid circuit. capable of achieving fault positioning and diagnosis at the same time; The device comprises a built-in self-test circuitand a bus multiplexing circuit. The built-in self-test circuit and the bus multiplexing circuit are arranged on the main control protocol chip; The built-in self-test circuit is connected with a selection signal port of the bus multiplexing circuit. The built-in self-test circuit is connected with the bus multiplexing circuit through the test mode control bus, the test mode address bus and the test mode data bus. The main control protocol chip also comprises a functional memory controller; Wherein a control bus of the main control protocol chip is connected with a control port of the memory chip, a data bus of the main control protocol chip is connected with a data port of the memory chip, and an address bus of the main control protocol chip is connected with an address port of the memorychip; An output data bus of the main control protocol chip is connected with an output data port of the memory chip; And the built-in self-test circuit and the functional memory controller read data on the memory chip through the output data bus.

The invention discloses a screening device for separating corncobs from pearls. The screening device comprises a base, and a discharging mechanism, a vibration conveying mechanism and a reciprocatingmechanism are installed on the base. An electrostatic adsorption system is additionally arranged on the reciprocating mechanism, the electrostatic adsorption system comprises an electrostatic adsorption surface moving along with the transmission nut seat, and the electrostatic adsorption surface is composed of an electrode and an insulating sheath covering the outer surface of the electrode. The electrodes are supplied with current by a power supply device, the power supply device is controlled by an operating switch, and the electrostatic adsorption surface adsorbs corncobs on the vibration bed body and moves to the position above the material return box along with the transmission nut base, so that the corncobs fall into the material return box, pearls fall into the collecting box from the vibration bed body, and the problems which cannot be solved through traditional mesh screen screening when the grain sizes of the corncobs and the pearls are the same are solved.

A thermoplastic resin composition of the present invention has high impact resistance, not lowering the weather resistance thereof, even though the amount of an impact resistance improver added thereto is small. The thermoplastic resin composition contains 100 parts by weight of (A) a thermoplastic resin and from 0.5 to 20 parts by weight of (B) a graft copolymer, wherein the graft copolymer (B) contains from 70% to 99% by weight of a crosslinked core (b2) prepared through polymerization of a monomer for the core (b2), containing 70% by weight or more of an acrylate, in the presence of from 0.5% to 20% by weight of a non-crosslinked seed (b1) having a weight-average molecular weight of 40,000 or less, and from 0.5% to 10% by weight of a shell (b3) prepared through polymerization of a monomer for the shell (b3) containing 50% by weight or more of a methacrylate, and the thermoplastic composition further contains from 0.01 to 3.0 parts by weight of (C) a water-soluble polymer compound having the property of forming a physical gel, relative to 100 parts by weight of the graft copolymer (B).

A card cover recognition device for an automatic card dispenser comprises a bar code and a recognizer, wherein the bar code comprises a bar code label and a radio frequency label, the bar code label comprises a label base body, an encoding zone and a numbering zone, the encoding zone comprises identification blocks, and the identification blocks are black or white; the recognizer comprises a bar code recognition device and a radio frequency recognition device; the bar code recognition device comprises a plurality of reflective infrared photoelectric sensors, and each reflective infrared photoelectric sensor corresponds to one identification block; when the identification blocks are black, the reflective infrared photoelectric sensors output low electric level; when the identification blocks are white, the reflective infrared photoelectric sensors output high electric level; the bar code recognition device is connected with a bar code decoding circuit, corresponding positions are set 0 by the bar code decoding circuit when the low electric level is output by the reflective infrared photoelectric sensors, and corresponding positions are set 1 when high electric level is output. The card cover recognition device has the advantages that the card cover code recognition efficiency and recognition quality can be ensured.

A device structure whereby an excellent tunable laser does not require a highly complicated wavelength control circuit, and delivers a high output, and excels in wavelength stability; and a structure of an optical module incorporating the laser; and a method for manufacturing the laser and the optical module. The wavelength of the laser is varied continuously with the single electric signal in the tunable wavelength range by setting the laser resonator length, the electric driving conditions of the laser at the time of tuning the wavelength, and the operating temperature to be in appropriate ranges, respectively. The device structure whereby improved laser gain, decreased electric resistance, and reduced heat resistance is attained by setting the waveguide width, particularly at part of or all parts of the laser resonator waveguide, to a wide width that allows multiple transverse modes to be sustained and setting both the width and the laser resonator length to appropriate values, respectively. By employing a self-image-formation effect resulting from the multi-mode interference effect, mode conversion loss in the laser resonator is reduced and, connection with an optical fiber is facilitated because the light intensity distribution at an emitting facet of the laser becomes a single-peaked lowest-order mode.