36results about How to "Increase the twist angle" patented technology

The invention discloses a micro reflector array manufacturing method which is used for manufacturing micro reflector array with high fill factors, big-angle torsion and big array. The method adopts bulk-silicon MEMS processing technology, a vertical comb driving mode, wafer bonding technology and etching technology and is characterized in that the wafer is bonded after a middle driver layer is processed, a layer of reflector surface is covered above the driver layer; on the basis, a special deep etching release technology is adopted to release a shore reserved in the driver layer to realize micro reflector torsion, thus realizing the purpose of driving with high fill factors, big-angle torsion and low voltage.

The invention relates to an electromagnetic drive two-dimensional scanning micro mirror for laser scanning display. The micro mirror comprises a peripheral frame, an inner frame arranged in the peripheral frame, a vertical scanning twist beam connecting the peripheral frame and the inner frame, a micro reflecting mirror arranged in the inner frame and a pair of magnets. The peripheral frame is provided with a cantilever; the inner frame is connected to the cantilever of the peripheral frame through the vertical scanning twist beam; the cantilever is provided with a cantilever drive coil, the inner frame is provided with an inner frame drive coil, the magnets are arranged on two sides of the cantilever oppositely, and the magnetic induction lines produced by the magnets are perpendicular to the current directions of the cantilever drive coil and inner frame drive coil after powering. According to the micro mirror, the two groups of drive coils scanning in two directions are controlled independently, interference between two directions is reduced, large twisting angle can be acquired easily, the magnetic field utilization rate can be increased, and the drive scheme is simplified.

The invention relates to the technical field of micro electro mechanical systems, in particular to a double-layer comb tooth driving MEMS scanning mirror for a laser radar and a preparation method. The MEMS scanning mirror comprises a transparent glass cap, a rotary scanning mirror body and a silicon substrate. The rotary scanning mirror body comprises a square micro mirror, a first S-shaped torsion beam, a second S-shaped torsion beam, a rectangular inner-layer frame and a rectangular outer-layer frame; the outer-layer frame is coaxially arranged outside the inner-layer frame in a sleeving mode, and the two ends of the inner-layer frame are connected with the outer-layer frame through first S-shaped torsion beams respectively; the two ends of the micro mirror are correspondingly connectedwith the inner-layer frame through a straight connecting beam and a second S-shaped torsion beam in sequence, so that the micro mirror is movably mounted in the middle of the inner-layer frame; and driving voltage is applied to the comb tooth electrode layer, the upper electrode and the lower electrode, so that the micro mirror can rotate in the movable cavity. According to the preparation method, the bulk silicon processing technology and the SOI-based silicon-glass bonding technology are adopted to complete manufacturing and packaging of the MEMS scanning mirror, the processing efficiency is high, and the repeatability is high.

The invention relates to a fluorescent material which has thermal activation delayed fluorescence and an excited state proton transfer property simultaneously. A D-pi-A-pi-D type strong charge transfer state compound is formed by taking beta-diketone or a derivative thereof with the excited state proton transfer property as a strong pull electron central nucleus (Acceptor), an amine derivative (Donor, D) with a strong electron donating ability as an electron donor and a benzene ring or other aromatic rings as a bridging group. The fluorescent material provided by the invention is simple to prepare and suitable for wide application. Therefore, the organic compound prepared by the invention can replace a conventional thermal activation delayed fluorescent material and an excited state proton transfer material and has important application value and wide prospect in the fields of fluorescence imaging, biosensing, ultraviolent adsorbents, light-emitting apparatuses and the like.

The invention relates to a soft driver, in particular to a torsional contraction artificial muscle. The torsional contraction artificial muscle comprises an outer packaging layer, a fiber winding andan elastomer, wherein the elastomer is of a hollow structure, and radial expansion and axial contraction are achieved by filling the driving medium into a hollow cavity; the fiber winding is arrangedon the outer surface of the elastomer, the fiber winding is of a spiral structure, and the elastomer is driven to twist through the spiral torsion drive; and the outer packaging layer is arranged on the outer side of the elastomer in a sleeving manner and is used for limiting the axial extension of the elastomer, and can axially contract and radially expand along with the elastomer. The torsionalcontraction artificial muscle is simple in structure and low in preparation cost, is not only suitable for hydraulic driving, but also suitable for pneumatic driving, can provide torsional movement and contraction motion and can be applied to different fields such as pipeline robots and rehabilitation devices.

The invention discloses a torsion shock absorption device, a flywheel and a car transmission system, and belongs to the technical field of shock absorption. The torsion shock absorption device comprises a first shock absorber and a second shock absorber. The first shock absorber comprises a first shock absorption disc, a first elastic part and a first shock absorption disc hub, and the first shockabsorption disc is connected with the first shock absorption disc hub through the first elastic part. The second shock absorber comprises a second shock absorption disc, a second elastic part and a second shock absorption disc hub, the second shock absorption disc is connected with the second shock absorption disc hub through the second elastic part, and the second shock absorption disc is fixedly connected with the first shock absorption disc hub. The flywheel comprises the torsion shock absorption device. The car transmission system comprises the flywheel. The torsion shock absorption device has the characteristics of being large in torsion angle and good in shock absorption effect. The flywheel can effectively reduce vibration generated by transmission between an engine output shaft and a transmission input shaft. The car transmission system can effectively avoid abnormal vibration of a car body and improve the smoothness and comfort during acceleration of a car.

The invention provides a pneumatic soft-bodied torsion actuator based on a cavity body structure design. The pneumatic soft-bodied torsion actuator based on the cavity body structure design comprises a cavity body, a top flange, a bottom end cover and a connecting rod, a top mounting groove matched with the top contour surface of the cavity body is formed in the top flange, a bottom mounting groove matched with the bottom contour surface of the cavity body is formed in the bottom end cover, the top and the bottom of the cavity body are in fit connection with the top flange and the bottom end cover respectively, the connecting rod penetrates through the interior of the cavity body, and the two ends of the connecting rod are connected with the bottom end cover and the top flange respectively. According to the pneumatic soft body torsion driver based on the cavity body structure design, based on the design of a geometrical shape of an air cavity, the end cover, an air pipe, the flange and other parts are combined into a whole, and therefore the performance of an existing soft-bodied torsion actuator is improved; and the pneumatic soft-bodied torsion actuator has the characteristics of large torsion angle per unit length and strong load capacity.

The invention discloses a hovering type miniature bionic double-flapping-wing flying robot which is composed of flapping mechanisms, a control mechanism and a power supply and control system, wherein the flapping mechanisms and the control mechanism are arranged on the two sides of a main machine frame. The flapping mechanism can rotate around the connecting shaft, power is output through the hollow cup motor, flapping motion of the bionic wings is achieved, then aerodynamic force and aerodynamic torque (rolling torque) are generated, when the bionic wings move, high lift force is generated through a clap-fling mechanism similar to insect flapping, and high aerodynamic efficiency is achieved. The control mechanism drives the whole flapping mechanism rack to rotate by virtue of a linear steering engine, so that the flapping plane of the bionic wing is changed, the aerodynamic force/moment direction is changed, and pitching and yawing torques are generated; The power supply and control system is realized by a control circuit board, and the whole system is powered by a battery. The parts are made of carbon fiber plates or 3D printing materials, so that the robot is light and small, the flight efficiency is improved, and the robot has ultrahigh maneuverability.

The invention discloses a large-torque driven disc assembly of a clutch. The assembly comprises a driven disc, a damping disc, a disc hub disc, a disc hub core, a waveform piece and friction pieces. The driven disc, the damping disc and the disc hub core are connected, the disc hub disc is connected with the waveform piece, the friction pieces are arranged on two sides of the waveform piece, three groups of windows are arranged on the disc hub disc, and three groups of damping springs with different rigidities are arranged in the three groups of windows. The damping spring with smallest rigidity in the disc hub disc is utilized to control the largest torsion angle, the damping spring with smallest rigidity is small in steel wire diameter and large in compression space, so that the driven disc assembly is large in torsion angle, correspondingly increases torque, omits a limit pin and notch limit, is small in disc hub rigidity requirement, and cannot affect damping effect.

The invention relates to the field of power cables, in particular to a long-life-cycle anti-torsion cable for offshore wind power, which comprises a cable core formed by a plurality of insulating wire cores and a wrapping tape layer wrapping the surface of the cable core, the outer surface of the wrapping tape layer is coated with an inner sheath layer; the outer surface of the inner sheath layer is coated with a mixed braid layer; and the outer surface of the mixed braid layer is coated with an outer sheath layer. Each insulating wire core comprises a conductor and an insulating layer wrapping the conductor. The conductor is formed by mixing and winding a plurality of copper wires and a plurality of fiber copper composite wires; each fiber copper composite wire comprises an organic fiber in the center and one or more layers of copper foils spirally wound on the outer surface of the organic fiber; the fiber copper composite wires can achieve the purposes of high-strength tensile strength, torsion resistance and light weight; and the cable is applied to a control system of an offshore high-power generator set or a control system of a land wind turbine generator set.

The invention provides a push-pull scanning grating, which is characterized by comprising a supporting frame, a reflection grating, a torsion beam, an electromagnetic push-pull driver used for drivingthe reflection grating to be twisted and an angle sensor used for detecting the twisting angle of the grating, wherein the reflecting grating is connected with the supporting frame through two torsion beams which are distributed on the two side edges and are symmetrically arranged; the axes of the two torsion beams coincide with the center line of the side edge of the reflection grating; the angle sensor is arranged at the joint of one of the torsion beams and the supporting frame; the electromagnetic push-pull driver comprises a driving coil and two driving electrodes; and driving signals are input through the driving electrodes, driving coils arranged on the two side edges of the center line of the reflection grating are controlled to form currents with opposite flow directions, and thereflection grating is driven to twist. According to the invention, the structure is simple, the power consumption can be effectively reduced, and the stability of the scanning grating is enhanced.

The invention discloses a spline structure integrated with a multi-stage vibration absorbing function. The spline structure integrated with the multi-stage vibration absorbing function comprises a main body spline and a vibration absorbing spline; the positions, corresponding to missing teeth on the main body spline, on spline teeth arranged on the vibration absorbing spline are assembled in a filled and embedded manner to form a complete spline structure in which the spline teeth on the vibration absorbing spline and the spline teeth on the main body spline are uniformly distributed in a non-radial direction; spring components are embedded into a spring grooves in the main body spline and the vibration absorbing spline to be assembled and fixed to the position of a spring groove in a flywheel disc in a corresponding manner and then are connected with the spline teeth arranged on a torque transmission plate to transmit a torque; the torque transmission plate is connected with an inputof a main vibration absorber; and the spline structure is formed to optimize a primary vibration absorbing torque and a secondary vibration absorbing torque of the main vibration absorber. The splinestructure integrated with the multi-stage vibration absorbing function has the advantages that the problem of limited vibration absorbing ability of the main vibration absorber in a whole vehicle is solved, the torsion angle of a whole vibration absorbing system is increased, and the driving comfort of the whole vehicle is improved.