129results about How to "Improve hysteresis" patented technology

An emphasis converter 52 compares the image data of the current vertical period with the image data of the previous vertical period and controls the input image data to a liquid crystal display panel 4 based on the emphasis conversion parameters stored in tables of ROMs 3a to 3c so as to achieve accelerated drive. A microcomputer 38 is able to realize stable control of selecting emphasis conversion parameters by adding hysteresis to the detected temperature from a thermistor 37 even when the detected temperature fluctuates up and down crossing the temperature threshold.

An elastic material that lowers extension tension over a given range without a significant impact on the retractive tension or stress relaxation. The elastic laminate includes a first set of elastic members attached to one or more substrates while the elastic members are stretched, and a second set of elastic members or an elastic film attached to the one or more substrates while the elastic members or film are stretched to a different extent than the first set of elastic members. Both the substrate(s) and one of the sets of elastic members or film are gathered when the other set of elastic members or film is relaxed. Also included is a method of making the differentially-stretched elastic laminate.

The invention relates to a foamed fluoropolymer, preferably a polyvinylidene fluoride (PVDF) structure, such as from Kynar® resins. The foamed structure is continuous self-supporting, sized, and has a dense skin. The foamed structure is manufactured in a process using foaming agents and nucleating agents. The structure is sized into a specific shape during the manufacturing process—requiring a good melt viscosity of the PVDF foam. In one process, a master batch containing the nucleating agent is used. The foamed article could be a sheet, film, profile, tube, pipe, article, rod foam-core structure, or other self-supporting shape. Foamed tubes, pipes, rods, sheets and conduit are especially useful. The foamed structure of the invention provides added value by being lighter weight, more flexible, and more impact resistant than a comparable non-foamed PVDF structure. It also has increased hysteresis, increased insulation properties, reduced dielectric constant, and increased compressibility.

The invention belongs to the technical field of node connection of architectural structure, in particular to a vertical reinforced concrete component, that is, a connection node of a buckling-restrained brace (BRB), which consists of steel plates, internal-thread steel bars for embedded parts, internal stirrups for concrete beams, internal longitudinal bars for concrete beams, support connection node plates, support node stiffening plates, buckling-restrained supports, internal stirrups for concrete columns and internal longitudinal bars for concrete columns, wherein, two steel plates are connected by the internal-thread steel bars for embedded parts; plug welding holes are formed on the steel plates; steel bars are welded with a first steel plate and a second steel plate at the plug welding holes; a first support connection node plate is located at the upper part of the first steel plate or at the lower part of the second steel plate; a second support connection node plate is connected with the first support connection node plate; one end of the second support connection node plate is fixed at the upper part of the first steel plate or the lower part of the second steel plate, andthe other end thereof is connected with the buckling-restrained brace; and the support node stiffening plates are fixed at one side of the first support connection node plate. The invention solves the problems that steel support connection nodes are difficult to be mounted in a concrete frame, structural steel needs punching when being embedded in a concrete component, and stirrups and longitudinal bars are arranged with difficulties; and the invention has the advantages that the construction is convenient, the stress performance of connection is good, and steel materials can be saved, therefore, the invention has wide application prospect.

The invention provides a 2D-3D switching stereoscopic display device and a liquid crystal lens, which belong to the technical field of stereoscopic display. The liquid crystal lens comprises a first substrate with a first electrode formed thereon and a second substrate with a second electrode formed thereon, as well as a polymer layer and a liquid crystal layer which are arranged between the first electrode and the second electrode, wherein the liquid crystal layer adopts double-frequency liquid crystal; and an arc-shaped boundary is formed between the polymer layer and the liquid crystal layer. According to the invention, the hysteresis effect caused when the stereoscopic display device is switched from 2D to 3D is improved, and therefore the display effect of the stereoscopic display device is improved.

The invention provides a method for preparing a perovskite solar cell on the basis of a two-dimensional material graphene-phase carbon nitride. The graphene-phase carbon nitride is doped into a perovskite precursor solution to prepare the perovskite solar cell. The method has the following advantages that (1) the raw material required for synthesis of the material is low in cost, and the product is small in toxicity; (2) solvent volatilization during the annealing process is effectively slowed down, so that a perovskite thin film crystal is more uniform and compact; (3) the grain crystal sizeof a perovskite layer is increased, a crystal boundary easy to combine with charge is effectively reduced, and the filling factor of a device is improved; (4) a surface of the perovskite thin film ispassivated, and the hysteresis phenomenon of the device is effectively improved; and (5) the conductivity of the surface of the perovskite thin film is improved, the contact resistance of the interface is reduced, and the short-circuit current of the device is increased. The preparation process is simple and convenient and is low in preparation difficulty; by doping of the graphene-phase carbon nitride, the smoothness and the uniformity of the perovskite thin film can be effectively improved; and by a series of gradient doping, the device performance is remarkably changed.

The invention discloses a long-distance self-driving method for liquid drop on wetted gradient surfaces. The wetted gradient surfaces comprise uniform silicon oxide stripes and silicon nano-needle structures. Silicon oxide with static contact angles of 15.5 degrees is arranged on hydrophilic regions on the surfaces of wetted gradient solid, the silicon nano-needle structures etched by the aid of deep reactive ions are arranged at the bottoms of the wetted gradient solid, static contact angles of silicon nano-needles are 166.0 degrees, and lag angles of the silicon nano-needles are 3.0 degrees.The long-distance self-driving method has the advantages that the surface wetted gradient ranges of the solid can be greatly expanded and can reach 150 degrees at least, lag phenomena of front and rear contact lines of the liquid drop can be optimized, and the tiny liquid drop with the sizes of 38 mm can be self-driven over long distances; diversified directional self-driving movement paths are designed for the liquid drop, and the long-distance self-driving method is novel in design and is an excellent innovation scheme.

Modified fillers are described which have adsorbed and / or attached chemical groups, such as a triazole and / or pyrazole thereon. Other modified fillers are also described. Elastomeric compositions containing the modified filler are further described, as well as methods to improve hysteresis and / or abrasion resistance in elastomeric compositions using the modified fillers of the present invention.

This invention relates to a pneumatic rubber tire having a circumferential rubber tread of a lug and groove configuration which extends to a substantial portion an adjacent rubber sidewall and is designed to be ground-contacting. Said lug and groove configured portion of said sidewall is of a rubber composition comprised of a blend of cis 1,4-polyisoprene natural rubber and cis 1,4-polybutadiene rubber which contains reinforcement as carbon black, starch / plasticizer composite and aggregates of participated silica together with a coupling agent. Said circumferential rubber tread is of a rubber composition comprised of at least one diene-based rubber together with carbon black reinforcement and is exclusive of starch and precipitated silica.

A method and apparatus for detecting a zero crossing or desired phase angle of a power line signal having a variable amplitude uses a ratio between a peak amplitude of the power line signal and the amplitude of the power line signal at a desired phase angle for a known amplitude version of the power line signal to detect when a variable amplitude version of the power line signal is at the desired phase angle or zero crossing. The detection of the phase angle is used to determine if a notch is present in the power line signal. A substantially constant width pulse is generated if a notch is detected regardless of the amplitude of the power line voltage or current. The invention is particularly useful in a lighting system for generating and detecting pulses used to communicate information from a power line communication controller to a series of electronic ballasts over a power line used to power the ballasts. The information can be used to control a dimming function of the ballasts.

The invention belongs to the pneumatic artificial technical field, and particularly relates to double-tube sleeved type pneumatic artificial muscle.The double-tube sleeved type pneumatic artificial muscle comprises an elastic outer tube, outer cellosilk, an elastic inner tube, inner cellosilk, a first air pipe connector, a second air pipe connector, a gap, an inner tube cavity, a first clamp, a second clamp, a gap vent and an inner tube cavity vent.By controlling the relationship of air pressure in the gap and air pressure in the inner tube cavity, active axial contraction and active axial rotation of the double-tube sleeved type pneumatic artificial muscle are achieved.Compared with pneumatic muscle of the same model in the market, the double-tube sleeved type pneumatic artificial muscle has the advantage that air consumption is lower, so that energy saving is better achieved.The performance of the pneumatic muscle is improved and enriched, functional innovation and expansion are achieved, and the double-tube sleeved type pneumatic artificial muscle is worth application.

An anti-knock device of large distortion and heavy load visco-elasticity damper is composed by a large distortion visco-elasticity damper and lead compacting damper. The large distortion visco-elasticity damper is put in the middle and surrounded by several lead compacting dampers with the top and bottom linked to the armor plate to from an integrated damper.

The invention provides an energy-saving effective permanent magnetic brushless rotation motor which starts and runs stably and has low cost. The motor owns two air gap magnetic fields at the magnetic poles of two ends; the deformed rotor permanent magnet or stator electromagnet leads the rotor magnetic pole (or stator magnetic pole) to be staggered by a certain of pole distance at the air gap magnetic fields of two ends; furthermore, the air gap magnetic field at one end of the motor is led to be less than the air gap magnetic field at the other end by technical means, thus leading the motor to keep directional rotation without a starting device. The rotor magnetic poles are intermittently arranged in pairs according to N, S and the like. The stator can be a conversion-typed stator and a commutation-typed stator; all coils at one end of the conversion-typed stator have the same polarity (N-pole or S-pole; the polarity of the coils at the other end are all S-pole or N-pole); the polarity of the magnetic pole of the commutation-typed stator coil is intermittently arranged in pairs according to N, S and the like; and the magnetic pole of the alternating current commutation-typed stator is intermittently arranged in pairs according to N, N, S, S and the like. The quantity of the rotor magnetic poles and the stator magnetic poles is configured according to the proportion of 1:1 or 1:2 or 2:3.

The invention provides a displacement measurement method based on piezoelectric ceramic open-loop modulation, belonging to the technical field of measurement. The displacement measurement method provided by the invention is characterized by comprising the following steps of: applying a periodic triangular wave driving voltage to piezoelectric ceramic to enable the piezoelectric ceramic to reciprocate; respectively finding out reference positions corresponding to a certain length of the piezoelectric ceramic in opposite movement directions and obtaining driving voltages corresponding to the reference positions; and calculating an average value of the driving voltages; and calculating a displacement amount to be detected by multiplying the change of the average value by gradients of middle section areas, which are close to be linear, in an average value curve of a displacement-driving voltage curve in the process of raising the driving voltages and a displacement-driving voltage curve in the process of decreasing the driving voltages under the driving of the periodic triangular wave driving voltage. The method provided by the invention has the advantages of effectively improving the hysteresis and the non-linearity of the piezoelectric ceramic and improving the precision of the displacement measurement; the displacement measurement can be realized by only carrying out open-loop control on the piezoelectric ceramic, so that the system complexity and the cost are not increased, the method is convenient to combine with other displacement measurement methods and the large-scale high-precision displacement measurement can be realized.

The invention discloses a crystal oscillator temperature compensation system. The automatic crystal oscillator temperature compensation system comprises a high / low temperature test box, a frequency gauge, a DC voltage stabilizing power source, a programmable DC voltage stabilizing power source and a host, wherein a to-be-compensated voltage controlled crystal oscillator is disposed in the high / low temperature test box, output frequency of the to-be-compensated voltage controlled crystal oscillator is measured by the frequency gauge, a power source voltage is provided by the DC voltage stabilizing power source to the to-be-compensated voltage controlled crystal oscillator, the high / low temperature test box is controlled by the host to realize temperature adjustment, under the present temperature, the programmable DC voltage stabilizing power source is controlled for providing a proper voltage to the to-be-compensated voltage controlled crystal oscillator to realize voltage compensation of the to-be-compensated voltage controlled crystal oscillator to make output frequency after voltage compensation be equal to target frequency, corresponding frequency offsets and compensation voltages under different temperatures can be acquired, a frequency offset-compensation voltage data table is acquired and is stored to a compensation voltage generation device of a voltage controlled crystal oscillator, so automatic temperature compensation control on the voltage controlled crystal oscillator is realized, and timeliness and accuracy of automatic temperature compensation are improved.

A face seal is provided with a constriction ring around a rubber boot that constricts the normal outward bulging of the flex section of the rubber boot as it folds and tries to roll forward over itself during axial deflection. The constriction caused by the constriction ring provides for increased frictional hysteresis during compression and decompression of the boot flex section. This increased hysteresis increases the dampening capacity of the seal design and, therefore, reduces undesired vibrations and seal noise generation.

The invention discloses a novel four-hole site coil integral force transducer based on the principle of piezomagnetic effect. The force transducer comprises a transducer piezomagnetic body, a horizontal hole site, a horizontal coil W1.2, a vertical hole site, a vertical coil W3.4, a differential rectification output circuit, an excitation transformer and a low-frequency excitation power supply. In the invention, a horizontal hole site measurement coil and a vertical hole site compensation coil in a measurement area are completely separated; based on the inherent characteristic of the magneticbody material that the longitudinal magnetic conductivity parallel to an external force F is very sensitive to stress while the transverse magnetic conductivity vertical to the external force F is not sensitive to the stress, the measurement circuit is designed as an inductive four-wall balanced bridge according to the electric principle; and the bridge output is in a current rectification and resistance voltage reduction mode so as to realize an integral optimization measurement circuit with three-wire excitation, differential compensation and DC (direct current) output.

The invention provides a preparation method of a perovskite battery with an n-type doped electron transport layer and a TiO2 layer. The method comprises the following steps of: (1) FTO transparent conductive glass substrate cleaning and TiO2 thin film preparation: an upper TiO2 layer is deposited on a treated FTO transparent conductive glass substrate, and the FTO transparent conductive glass substrate with the deposited upper TiO2 layer is arranged in a drying oven for later use; (2) Bis-PCBM and DMC composite film preparation; (3) spin coating treatment on the FTO transparent conductive glass substrate with the deposited upper TiO2 layer; (4) perovskite film preparation; (5) Spiro-OMeTAD thin film preparation: a Spiro-OMeTAD solution is spin coated on the FTO transparent conductive glass substrate in step (4); and (6) MoO3 and Ag electrode preparation: an MoO3 electrode and Ag electrode are formed on a Spiro-OMeTAD thin film through evaporation. With the method of the invention adopted, the electron mobility and conductivity of a thin film can be improved; the photoelectric conversion efficiency of a device can be improved; the surface of the thin film is smoother, so that the thin film can be used as a good substrate for the deposition and growth of a perovskite layer in subsequent processes; and the degradation process of the perovskite layer can be slowed down, and the stability of the device can be improved.

Feedback circuits capable of preventing output voltage overshoot in closed-loop DC regulated power supplies are presented. The circuits employ hysteresis at the input of an operational amplifier to improve the response time of the feedback circuits to a rising output voltage reaching a threshold. The feedback circuits substantially reduce, if not prevent, output voltage overshoot during start-up and hard and soft output shorts.

The electroluminescent display device according to the present disclosure comprises a plurality of pixels. Each of the plurality of pixels comprises a driving element for generating a driving current, a light emitting element for emitting light according to the driving current, an emission controlling element for controlling a flow of the driving current between the driving element and the light emitting element, and a switching circuit for setting a first gate-source voltage of the driving element corresponding to the driving current based on a first data voltage during a first period and setting a second gate-source voltage of the driving element based on a second data voltage different from the first data voltage during a second period following the first period, wherein the second gate-source voltage is different from the first gate-source voltage, and wherein during the second period the emission controlling element is turned off.

The invention discloses a pixel circuit and a display panel. The pixel circuit comprises a driving module, a bypass module and a light emitting device. The driving module is used to input driving current to the input end of the light emitting device to drive the light emitting device to emit light. The bypass module is connected between the input end and the output end of the light emitting device, and is used to shunt the driving current input by the driving module to the light emitting device. The off-state voltage of the driving module can be set to be smaller, so that the driving module in a dark state can output trace current to protect response time, improve response speed and improve a hysteresis effect. The bypass module is connected between the input end and the output end of the light emitting device, and then the current through the light emitting device is small through the shunt of the bypass module. The brightness of the light emitting device in a dark state is dark enough to ensure that the dark state display brightness of the display panel.

The invention provides a pixel circuit, a pixel driving method and a display device. The pixel circuit includes a light-emitting element, a driving circuit, an energy storage circuit, an initialization circuit, a compensation control circuit, a light-emitting control circuit and a writing control circuit. Under the control of a first gate driving signal, the initialization circuit writes initialization voltage to the control end of the driving circuit to control that the driving circuit to lead the connection between its first end and second end. Under the control of a second gate driving signal, the compensation control circuit controls and leads the connection between the control end of the driving circuit and the second end of the driving circuit. The problem is solved that the threshold voltage compensation can not be carried out when a short-term residual image is effectively improved in the prior art.

The invention relates to a stepping motor-based automatic control system for an open degree of a throttle gate of an automobile. The system comprises an accelerator pedal position sensor for generating a voltage signal of the accelerator pedal position and transmitting the same to a throttle gate control unit ECU; the throttle gate control unit ECU which receives the voltage signal transmitted by the accelerator pedal position sensor and outputting a voltage signal of the stepping motor; the stepping motor which controls the open degree of the throttle gate according to the voltage signal of the stepping motor output by the throttle gate control unit ECU; and throttle gate position sensor which feeds an open degree signal of the throttle gate back to the throttle gate control unit ECU. When a driver operates the accelerator pedal, the throttle gate control unit ECU controls the open degree of the throttle gate according to the voltage signal of the accelerator pedal position sensor, so that an engine outputs the optimum torque. The air-fuel ratio can be precisely controlled, and hysteresis of the accelerator is remarkably improved, so that the emission performance of the engine is further improved.

The invention relates to a modified diene elastomer comprising predominantly the entity functionalized in the middle of the chain by an alkoxysilane group, optionally partially or completely hydrolysed to give silanol, bearing an epoxide function and the silicon atom of which bonds the two pieces of the chain, the chain ends of the modified diene elastomer being functionalized to at least 70 mol %, with respect to the number of moles of chain end, by an amine function.

A thin film transistor includes a gate electrode, a gate insulating layer, a source electrode, a drain electrode, and a channel layer. The gate electrode is disposed on a substrate, and the channel layer is electrically insulated from the gate electrode. The gate insulating layer is disposed between the gate electrode and the channel layer. The source electrode and the drain electrode are electrically connected with the channel layer. The channel layer includes a front channel layer proximate to a side of the gate insulating layer, a back channel layer proximate to a side of the source electrode and an intermediate layer between the front channel layer and the back channel layer. The oxygen vacancy concentration of the front channel layer is greater than the oxygen vacancy concentration of the intermediate layer

A method for detecting the motion of an element relative to a sensor apparatus is proposed, in which a detection of the direction of motion is performed. As a function of the direction of motion, a measurement signal is increased or decreased at predetermined measurement intervals, and only if a predetermined threshold value is exceeded is a direction-of-motion signal generated. Preferably, by means of a counting logic circuit (6), a counter is increased by a binary amount In one direction (2) and the counter (6) is decreased by a binary amount in the respective other direction (3). Upon a detection of measurement signals which as a result of being increased or decreased in a measurement interval do not lead to exceeding of the predetermined amount of the threshold value, vibration of the element is assumed.

A resetting device for pedals of a motor vehicle is provided with a spring element (6), which is fixed on a mount (9) at the pedal (1), on the one hand, and, on the other hand, at a corresponding mount (10). At least one spring-loaded friction element (12) is provided with at least one friction surface pair (13, 14). The friction surface pair (13, 14) is arranged between the pedal (1) and the body of the motor vehicle.

The invention provides a concrete member and steel support H-shaped embedded connection joint. The concrete member and steel support H-shaped embedded connection joint is arranged between beams and columns of a house. The concrete member and steel support H-shaped embedded connection joint comprises concrete member parts and connection joint parts, wherein each concrete member part comprises concrete beam inner longitudinal bars, concrete beam inner stirrups, concrete column inner longitudinal bars, concrete column inner stirrups, a first steel plate and a second steel plate; each connection joint part comprises a first support connection joint plate, a second support connection joint plate and steel supports; and both ends of each support steel are respectively and mutually connected with the connection joint parts. The concrete member and steel support H-shaped embedded connection joint is characterized in that the corresponding concrete member part also comprises third steel plates. The third steel plates are located between the first steel plate and the second steel plate; one ends of the third steel plates are connected with the first steel plate; and the other ends of the third steel plates are connected with the second steel plate.

The invention discloses a high-precision ceramic pressure sensor which comprises a ceramic baseplate containing a concave hole and a plurality of electric-conductive through holes as well as a ceramic thin plate combined on the side of the ceramic baseplate where the concave hole is located, a measuring electrode and a first annular electrode winding the measuring electrode are disposed on a concave face of the concave hole, a moving electrode and a second annular electrode winding the moving electrode are disposed on the face of the ceramic thin plate which is opposite to the concave face, leading-out ends of the measuring electrode, the first annular electrode, the moving electrode and the second annular electrode are respectively led out from the other side opposite of the ceramic baseplate which is opposite to the concave hole via the corresponding electric-conductive through holes, the moving electrode and the measuring electrode constitute a measuring capacitor, the moving electrode and the first annular electrode constitute a reference capacitor, and the first annular electrode and the second annular electrode also constitute an isoelectric face through short circuits of the electric-conductive through holes. The high-precision ceramic pressure sensor disclosed by the invention can control an electrode spacing within a very high precision scope without introducing any second material, and has high sensitivity and good sealing effects.