426results about How to "Improve output stability" patented technology

A plasma processing apparatus includes a chamber for containing a substrate to be processed, a gas supply unit for supplying a processing gas into the chamber, and a microwave introducing unit for introducing plasma generating microwaves into the chamber. The microwave introducing unit includes a microwave oscillator for outputting a plurality of microwaves having specified outputs, and an antenna section having a plurality of antennas to which the microwaves outputted from the microwave oscillator are respectively transmitted.

A miniaturized laser package is provided comprising a standard semiconductor laser package modified to accept a solid state microchip assembly pumped by the diode laser. Standard packages described in the invention include TO and HHL packages all of which are characterized by small dimensions, well sealed housing, robust mounting features, known characterized materials and economical production and assembly techniques characteristic of the semiconductor processing industry. In particular, the microchip lasers are produced using high density techniques that lend themselves to mass production, resulting in very low unit costs. At the same time, the compact laser devices provide a solution to the problem of providing laser radiation at high beam quality and good reliability features with a variety of wavelengths and operational characteristics and low noise features not available from diode lasers yet relying primarily on standardized designs, materials and techniques common to diode laser manufacturing. The devices constructed according to methods taught by the invention can therefore be readily integrated into numerous applications where power, reliability and performance are at a premium but low cost is essential, eventually replacing diode lasers in many existing systems but also enabling many new commercial, biomedical, scientific and military systems.

In a laser-diode-pumped laser apparatus, a solid-state laser crystal doped with at least one rare-earth element including at least Pr3+ is pumped with a laser diode, and emits laser light. In the first aspect, the laser diode has an active layer made of one of an InGaN, InGaNAs, and GaNAs materials, and an optical wavelength conversion element converts the solid-state laser light into ultraviolet laser light by wavelength conversion. In the second aspect, the solid-state laser crystal is codoped with Pr3+ and at least one of Er3+, Ho3+, Dy3+, Eu3+, Sm3+, Pm3+, and Nd3+. In the third aspect, instead of the solid-state laser crystal, an optical fiber codoped with Pr3+ and at least one of Er3+, Ho3+, Dy3+, Eu3+, Sm3+, Pm3+, and Nd3+ is pumped with a GaN-based compound laser diode. In the fourth aspect, an optical fiber codoped with Pr3+ and at least one of Er3+, Ho3+, Dy3+, Eu3+, Sm3, Pm3, and Nd3+ amplifies incident light having a wavelength which is identical with a wavelength of fluorescence generated by pumping of the optical fiber with a GaN-based compound laser diode.

The pressure sensitive sensor includes a sheet base, an application-side and a receiving-side electrode provided on the sheet base and conducting coatings provided on the electrodes. The conductive electrodes have pressure-sensitive conductive ink containing conductive carbon black. Resistance between the application-side electrode and the receiving-side electrode changes by a contact area between the conductive coatings on the electrodes. The pressure-sensitive conductive ink has an enhanced strength as a resin and an enhanced effect of dispersion of the conductive carbon black by adding 30 to 70 parts by weight of silicon dioxide to 100 parts by weight of silicone elastomer component as a binder. The pressure-sensitive sensor has output stability and linearity at temperatures in a wide range from −40° C. to 85° C.

Provided is an information security apparatus that has enhanced stability and confidentiality of a hash key. The information security apparatus includes an information generating PUF unit that has tamper resistance set, using physical characteristics, so as to output a preset hash key, a partial error-correction information storage unit that stores partial error-correction information, an error correcting PUF unit that has tamper-resistance set, using physical characteristics, so as to output error-correcting PUF information, an error-correction information generating unit that generates error-correction information using partial correction information and the error-correcting PUF information, and an error correcting unit that corrects an error for the hash key outputted from the information generating PUF unit and outputs an error-corrected hash key.

Autocorrelation values are determined as a basis for an estimation of a pitch lag in a segment of an audio signal. A first considered delay range for the autocorrelation computations is divided into a first set of sections, and first autocorrelation values are determined for delays in a plurality of sections of this first set of sections. A second considered delay range for the autocorrelation computations is divided into a second set of sections such that sections of the first set and sections of the second set are overlapping. Second autocorrelation values are determined for delays in a plurality of sections of this second set of sections.

Disclosed is a shift register which prevents current leakage and degradation of an oxide transistor due to light to improve output stability, and a display device using the same. The shift register includes a plurality of stages, and each stage includes a transmission line unit including a plurality of clock lines to supply a plurality of clock signals and a plurality of power lines to supply a plurality of voltages, a transistor unit including a plurality of transistors, and a light-shielding layer overlapping at least one transistor of the transistor unit so as to block light.

The invention discloses a radio frequency signal generating device. A control circuit is connected with a configuration port of a digital frequency synthesizer, a reference end of an operational amplifier of an automatic level control circuit and a tuning end of a voltage-controlled oscillator; a clock distribution circuit is connected with the digital frequency synthesizer, a frequency mixer and a comb-shaped spectrum generating circuit; the digital frequency synthesizer is connected with the clock distribution circuit and the frequency mixer; a local oscillation signal is connected with a switch; the switch is connected with a local oscillation input port of a quadrature modulating circuit; the output port of the comb-shaped spectrum generating circuit is connected with a third frequency mixer; the voltage-controlled oscillator is connected with the third frequency mixer, the frequency mixer and the control circuit; the frequency mixer is connected with a band-pass filter; the band-pass filter is connected with the automatic level control circuit; the output port of the automatic level control circuit is connected with the frequency mixer; and the frequency mixer is connected with the band-pass filter. The invention has digital control, good generality, low cost, flexible frequency setting and good stray and phase noise performance.

PROBLEM TO BE SOLVED: to realize a wide bandwidth light source capable of a stable operation providing a less spectrum variation. SOLUTION: Optical pulses 202 outputted by this optical pulse-generating device 201 are split by optical coupler 210. The one of split optical pulses is inputted in white light-emitting device 204 to emit the white light having the wide bandwidth. The other split is inputted in optical band pass filter 212 in operation-stabilizing circuit 207. Optical detector 213 detects a signal level of a specific wavelength and input in feedback circuit 215 to generate first and second feedback signals 205 and 206. Ring resonator fiber laser 208 uses any one of them and controls a rotation angle of the waveplate to realize stabilization of the output.

The invention provides a shifting register unit, a shifting register and a display device. The shifting register unit comprises an input module, a pull-up module and a pull-down module, wherein the pull-up module comprises a pull-up transistor; the shifting register unit further comprises a control voltage generating module; the first end of the control voltage generating module is connected with the output end of the input module; the second end of the control voltage generating module is connected with a grid electrode of the pull-up transistor; the control voltage generating module comprises a first memory capacitor, an antiphase submodule and a pull-up control submodule; the output end of the antiphase submodule is connected with the grid electrode of the pull-up transistor; the output end of the pull-up control submodule is connected with the first end of the first memory capacitor and the input end of the antiphase submodule. The shifting register unit disclosed by the invention can reduce the influence of suspension points in the shifting register unit on output, and improve the output stability.

An operation control method of a synchronization variable speed constant frequency wind generating set includes the strategies of AYC, synchronization control, low wind speed ceiling capacity follow control and high wind speed constant power control which includes the AYC, the synchronization control, the low wind speed ceiling capacity follow control and the high wind speed constant power control. An anemoscope and a wind vane measure the wind speed and wind direction information to generate a yaw deviation signal; a yaw motor is driven to execute left and right yaw according to the yaw direction and angle and limit the yaw velocity and meanwhile, the steering turns of the engine room are measured with the help of cables winding around a sensor, so as to execute safe untwist action, thus ensuring that the wind generating set realizes quick, accurate and safe effect of the wind wheel against wind. All the control strategies cooperate in work from the start to synchronization power generation according to the requirement of the set and external conditions, so as to ensure the safe and efficient operation of the wind generating set.

The invention discloses a shifting register and a driving method thereof as well as a gate drive circuit and a display device. The shifting register comprises an input module, a reset module, a first control module, a second control module, a first output module and a second output module. According to the shifting register disclosed by the invention, through mutual cooperation of the six modules, the electric potential of a third node for controlling the first output module is at a stable state under the action of the first control module, and the electric potential of a fourth node for controlling the second output module is at a stable state under the action of the second control module, so that the stability of a scanning signal output from a driving signal output end of the shifting register is realized, the noise of the scanning signal output from the driving signal output end is further reduced, and the output stability of the shifting register is improved.

The invention discloses a power switching coordination control method of a coaxial parallel hybrid electric vehicle with an engine torque observer. Based on the method of a least square support vector machine, the testing sampledatum of the engine rack performance aretrained; the distribution estimation algorithm is adopted to optimize the parameter C and Lambda of the least square support vector machine; and through off-line training and optimization to an engine toque module and based on the optimum parameters, the engine torque observer is built. The current throttle value percentage and rotary speed are inputted to acquire a real-time torque value, thus realizing on-line observation to the engine torque. During the switching process of switching a pure electric driving model to a pure engine driving model (different power sources) of the vehicle provided herein, section coordination control is carried out aiming to different power sources, thus realizing stable transition of the whole switching process and stable torque of power system output without fluctuation, and satisfying the requirement of vehicle driving total torque.

The piston pump to utilize alternate magnetic field to produce linear motion includes casing, cylinder inside the casing, piston inside the cylinder to fit the cylinder axially and airtightly, electromagnetic coil around the cylinder and connected to vibrating power source, and permanent magnet connected to the outside of the cylinder. The piston has one end connected to the casing and the other end inside the inner hole of the cylinder and is provided with fluid hole. There are the first non-return valve and the second non-return valve set in the fluid hole or inner cylinder cavity to constitute three independent cavities, including low pressure cavity communicated with the inflow pipe, variable volume work cavity and high pressure cavity communicated with the outflow pipe. The present invention has the advantages of simple structure, low power consumption, low noise, etc. and may be used in pumping oil, water and other medium and in compressor.

The invention relates to the field of piezoelectric ceramic drivers, in particular to a piezoelectric ceramic driver for optical focusing and zooming of a mobile phone. The structure of the piezoelectric ceramic driver comprises a disc stator at the center, a piezoelectric ceramic plate stuck to the surface of the stator, and a mobile body in threaded fit with the stator, wherein the piezoelectric ceramic plate is of a thin ring shape, and upper and lower surface electrodes of the ring-shaped ceramic are of fan-shaped quarter shapes; and when electrical signals are introduced to the surfaces of four fan-shaped regions of the piezoelectric ceramic, continuous driving force is formed on the internal thread of the disc stator to propel the mobile body to rotate spirally relative to the stator so as to realize axial linear motion. The manufacturing process is simple and suitable for industrialized production; compared with the prior art, the piezoelectric ceramic driver is easily microminiaturized, the output performance of an executor is more stable, and the piezoelectric ceramic driver has broad application prospect in the fields of optical focusing, precision driving and micro systems. Particularly, the piezoelectric ceramic driver can realize double effects on focusing and zooming in an embedded lens of the mobile phone or a notebook computer.

A mode-locked laser device includes a Fabry-Perot resonator, a mode-locking element disposed within the resonator, a solid-state laser medium disposed within the resonator, and exciting means for applying excitation light to the solid-state laser medium. The opposite ends of the resonator, the mode-locking element and the solid-state laser medium are disposed to provide an average beam diameter of lasing light of not more than 150 μm on the mode-locking element and an average beam diameter of the lasing light of not more than 200 μm within the solid-state laser medium.

The invention discloses a shift register, a grid drive circuit and a display device. The shift register comprises an input module, a first reset module, a first control module, a second control module, a node voltage control module and an output module which are in cooperation; the node voltage control module and the first control module form a bootstrap circuit, allowing the voltage of a second node to be the same with the voltage of the effective pulse signal of a first clock signal terminal; accordingly, the first control module can timely and effectively work under the control of the second node, allowing the driving signal output terminal of the shift register to timely output the scanning signal opposite to the electric potential of the effective pulse signal of an input signal terminal after output, thereby improving the output stability of the shift register, furthermore reducing the noise of the scanning signal outputted by the driving signal output terminal, and making scanning signal output more stable.

The invention discloses a new energy power generation grid-connection comprehensive peak regulation capacity assessment model based on demand side responses. The building processes of the model include the steps of (1) building a comprehensive peak regulation capacity assessment technology platform, wherein the comprehensive peak regulation capacity assessment technology platform is used for achieving acquisition, collection and calculation of peak regulation related data of the whole network, (2) building a peak regulation capacity index system, (3) building indexes related to specific peak regulation capacity and carrying out index statistics or calculation, and (4) on the basis of the peak regulation capacity index system, substituting the specific peak regulation capacity related indexes obtained in the step (3) to form the new energy power generation grid-connection comprehensive peak regulation capacity assessment model based on the demand side responses. The new energy power generation grid-connection comprehensive peak regulation capacity assessment model based on the demand side responses can overcome the defects that in the prior art, wind power output is poor in stability, high in peak regulation pressure and the like, and has the advantages of being good in stability of wind power output and low in peak regulation pressure.

A plasma processing apparatus includes a chamber for containing a substrate to be processed, a gas supply unit for supplying a processing gas into the chamber, and a microwave introducing unit for introducing plasma generating microwaves into the chamber. The microwave introducing unit includes a microwave oscillator for outputting a plurality if microwaves having specified outputs, and an antenna section having a plurality of antennas to which the microwaves outputted from the microwave oscillator are respectively transmitted.

The invention discloses a low-grade fluorite ore beneficiation process route assay method. The method is characterized by comprising the following steps: crushing raw ore to particles of 2 mm through a jaw crusher and twin rollers, uniformly mixing through a cone stacking method, and proportioning by using a square method as an ore sample for test; grinding four ore samples until the fineness of 60 percent, 70 percent, 80 percent and 90 percent of the ores is smaller than 200 meshes, then testing respectively under the conditions that the core grinding concentration is 50 percent, the using amounts of roughing agents are that the using amount of sodium carbonate is 500 g / t, the using amount of oxidized paraffin soap is 400 g / t, and the using amount of water glass is 500 g / t; the using amount of the scavenging agent is that the using amount of the oxidized paraffin soap is 100 g / t; determining percentage of the ore of which the process route rough grinding fineness is smaller than 200 meshes according to a quadruplet CaF2 cumulative recovery rate; determining using amounts of the roughing agents of the sodium carbonate, the water glass and the oxidized paraffin soap by using an L934 orthogonal method. The process route assay method has high practicability, obvious effect and obvious benefit.

The invention discloses a shifting register and a driving method thereof as well as a gate drive circuit and a display device. The shifting register comprises an input module, a reset module, a first control module, a second control module, a first output module and a second output module. According to the shifting register disclosed by the invention, through mutual cooperation of the six modules, the electric potential of a third node for controlling the first output module is at a stable state under the action of the first control module, and the electric potential of a fourth node for controlling the second output module is at a stable state under the action of the second control module, so that the stability of a scanning signal output from a driving signal output end of the shifting register is realized, the noise of the scanning signal output from the driving signal output end is further reduced, and the output stability of the shifting register is improved.

PROBLEM TO BE SOLVED: to realize a wide bandwidth light source capable of a stable operation providing a less spectrum variation.SOLUTION: Optical pulses 202 outputted by this optical pulse-generating device 201 are split by optical coupler 210. The one of split optical pulses is inputted in white light-emitting device 204 to emit the white light having the wide bandwidth. The other split is inputted in optical band pass filter 212 in operation-stabilizing circuit 207. Optical detector 213 detects a signal level of a specific wavelength and input in feedback circuit 215 to generate first and second feedback signals 205 and 206. Ring resonator fiber laser 208 uses any one of them and controls a rotation angle of the waveplate to realize stabilization of the output.

The invention discloses a shift register, a gate drive circuit and a display panel. The shift register comprises an input module, a rest module, a node control module, a first output module and a second output module. A first direct current signal end and a second direct current signal end are taken as power ends of a drive signal output end, so that compared with an existing shift register adopting a clock signal end as a drive signal output end, the power consumption of the shift register can be reduced, and the output stability of the drive signal output end can be improved.

An adaptive pulse width control power conversion device includes a pulse width adjustable pulse frequency module (PFM) control circuit, a pulse width modulation (PWM) control circuit, a PWM / PFM switching unit, a switching circuit, and a load status detection circuit. When the power conversion device is to be switched from a PWM mode to a PFM mode, pulse width of a series of PFM control signals is sequentially adjusted from a low value to a high value according to a predetermined pulse width increment until an optimum pulse width is determined and thereafter, an output voltage is supplied to a load in the PFM mode, whereby ripple of output voltage in the PFM mode can be improved and improved stability of output of the power conversion device is realized.

The invention discloses a hydro-viscous speed regulation device which comprises a transmission mechanism, a control mechanism, a drive shaft transparent cover and a driven shaft transparent cover, and the hydro-viscous speed regulation device further comprises a gear sleeve and a support base, wherein the gear sleeve is fixedly connected with a drive shaft and is located at the end part of a power output end of the drive shaft, and an initiative friction plate is arranged on the gear sleeve; the support base is connected with a driven shaft and can rotate opposite to the driven shaft; the support base is located at the end part of a power input end of the driven shaft, the support base is connected with the gear sleeve, the support base and the gear sleeve enclose to form a lubricating oil cavity together, an axial oil duct of the drive shaft is communicated with the lubricating oil cavity, an axial oil duct of the driven shaft is not communicated with the lubricating oil cavity, and the lubricating oil can go between the initiative friction plate and a passive friction plate; and a working oil cavity of a piston cylinder is communicated with a second radial oil duct. According to the invention, the drive shaft is changed into a split type from an integral type to further improve a lubricating oil duct, so that the problem of eccentric wear of friction plates in the prior art is solved fundamentally.

The invention relates to an adjustable pulse width control power supply conversion method and device, wherein the device comprises an adjustable pulse width PFM control circuit, a PWM control circuit, a PWM / PFM switching unit, a switch circuit and a load state detection circuit; and before a PWM mode is switched into a PFM mode, the grade is increased by preset pulse width, the pulse width of a PFM control signal of a sequence is gradually adjusted from low to high sequentially to an optimum pulse width valve, and then the output voltage is supplied to the load by the PFM mode, so that the output voltage wave form when in the PFM mode can be improved, and the output stability of the power supply conversion device is better.

Disclosed is a method of controlling a laser apparatus, which has a laser light irradiation unit, an excitation unit including a flash lamp, a laser light shielding unit, and a control unit configured to control light shielding by the light shielding unit and release of the light shielding and control setting conditions of the flash lamp. The control unit performs a process of blocking the laser light by the light shielding unit when irradiation of the laser light is stopped, then performs a process of controlling the setting condition so that consumption of the flash lamp is reduced, performs, when the irradiation is restarted, a process of controlling the setting conditions so that the laser light is stably irradiated, and then performs a process of releasing the light shielding.