2803results about How to "Achieve stability" patented technology

The magnetic signal reproduction system comprises a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support and a reproduction head, wherein a number of protrusions equal to or greater than 10 nm in height on the magnetic layer surface, as measured by an atomic force microscope, ranges from 50 to 2500 / 10,000 μm2, a quantity of lubricant on the magnetic layer surface, denoted as a surface lubricant index, ranges from 0.5 to 5.0, a surface abrasive occupancy of the magnetic layer ranges from 2 to 20 percent, the reproduction head is a magnetoresistive magnetic head comprising a spin-valve layer, the spin-valve layer comprises a magnetization free layer, a magnetization pinned layer and an antiferromagnetic layer, and the antiferromagnetic layer is comprised of alloy comprising iridium and manganese, and the reproduction head comes in sliding contact with the magnetic recording medium during signal reproduction.

The invention relates to a method and a device for determining an object property of an object with the aid of images that have been recorded with the aid of a camera. Further, the invention relates to a method for determining a calibration parameter for a stereo camera. For determining the object property of an object, the object is defined in a first image recorded with the aid of the camera. Further, the brightness of a defined object is determined. Each time after a preset time interval, a further image is recorded with the aid of the camera. The object is defined in each of the further images and each time, the brightness of the defined object of each image is determined. Dependent on the brightness curve, an object property is assigned to the object.

An method and apparatus is provided for achieving stability of an implant in an intervertebral space of the human body, including an implant having a superior surface and an inferior surface, the surfaces having no significant protrusions extending therefrom and at least one modular projection mateable with one of each superior and inferior surface of the implant to achieve stability within the intervertebral space. The implants can be selected form a group of artificial discs and spinal fusion cages.

The invention provides an electric motor car differential steeling control method based on slip rate control. The method comprises the following steps of: (1) measuring the back wheel speed of the electric motor car, the actual output torque of a drive motor and the side speed of the car according to a wheel sped sensor; and (2) calculating the side speed and the heading angle peed of the electric motor car according to two freedom steering models, and then calculating the slip angles of four wheels, thereby calculating the rotational speed of the four wheels; and using a special arithmetic to realize the control on the electric differential steeling of a hub electric motor car. The electric motor car differential steeling control method based on slip rate control combines the calculation of torque distribution with the slip rate of the wheels to lead a designed electric differential steeling mechanism to have the effect of differential lock simultaneously when having the differential and also have the functions of reducing the speed and increasing the torque, thus greatly improving the running trafficability characteristic and the steering performance of the electric motor car, not only achieving the effect of a mechanical differential mechanism on the aspect of function, but also improving the transmission efficiency and reducing the complexity of a mechanical system.

The present invention relates to a diary product containing fruit granules. Every 100 weight parts of the diary product of the present invention contains 30 to 80 parts of milk and milk product, 1 to 15 parts of fruit granules, 0.2 to 1.0 part of stabilizer compound and 0.25 to 0.6 part of acidity regulator; wherein, the stabilizer compound contains modified bio-fermentation polysaccharide and thickener; the fruit granule contains coconut juice fermented polysaccharide granule and fruit vegetable granule. A production method of the diary product containing fruit granules is also related by the present invention.

The invention discloses a preparation method of a novel MOFs-PVDF (Metal-Organic Frameworks-Polyvinylidene Fluoride) composite film. The preparation method is mainly characterized in that a synthesizing environment of MOFs is controlled to be consistent with a casting solution preparation condition, an organic ligand and metal ions are added into a casting solution by a simple one-step synthetic method, intermolecular acting force between the organic ligand and PVDF is regulated and controlled, the PVDF is chemically combined with the MOFs through a hydrogen bond of an 'F' atom, chemical bonding of a PVDF polymer and the MOFs is realized, and an MOFs-PVDF polymer is synthesized in the casting solution, so that the formation of a chemical bonding hole and the formation of an MOFs-PVDF novel film are performed simultaneously in a spinning process. The method is easy and efficient; moreover, the prepared film combines the advantages of an MOFs and PVDF composite film; the prepared novel MOFs-PVDF composite film has the advantages of high chemical stability, high mechanical strength, controllable aperture, large surface specific area and high porosity.

The invention discloses a stage method for improving the uniform expansion effect of granular fruits and vegetables during microwave spouted drying, which belongs to the technical field of the processing of fruit and vegetable foods. The method mainly comprises the steps of: performing selection, washing, dicing, enzyme killing by blanching, and color protection treatment on fruit and vegetable raw materials; placing the pretreated fruit and vegetable cubes into a microwave spouted drying bed; setting the microwave power and the air inlet heating temperature; then performing the combined drying of stage hot air drying and microwave drying; and controlling different spouted air intakes at different drying stages, wherein the uniform expansion effect of products is improved during the quick microwave drying. The method has the advantages that the method ensures that the granular fruits and vegetables are evenly heated in a microwave field through a hot air and microwave spouted drying stage method, has quick moisture evaporation, ensures that the fruits and vegetables have porous structures after the drying, effectively improves the expansion degree of the products, also improves the expansion effect of the products and ensures the uniform expansion of the products while the granular fruits and vegetables are quickly dried, and has the characteristics of good preservation of nutrient content and good qualities of color luster, sense and the like.

A breast garment for stabilizing breast implants includes a body surrounding the wearer's mid to upper torso, left and right built-in implant stabilizers positioned at the front of the body for applying medium to firm downward and lateral pressure on a wearer's breasts, and an adjustable front closure provided at the front edges of the body for making the body tighter or loose for adjusting the amount of downward and lateral pressure. The implant stabilizers have top, bottom, front, and back edges, with a cut-out in the front edge shaped to permit the areole and surrounding area of the breast to protrude therethrough. The body and the implant stabilizers are made of a stretch compressive fabric.

A self-seeking, load-distributing, load-balancing and shock-managing head-engaging system for use inside, and in association with, the shell of a helmet, including (a) a collection of configurationally changeable, shock-absorbing pads removeably and changeably attached / attachable effectively as a variable distribution to the inside of such a shell, and (b) a cinchable, self-seeking / adjusting, self-load-balancing and load distributing chin-strap subsystem operatively associated with the pad distribution, and also attached to the shell. This sub-system is sensitive to the then-particularities of such a pad distribution, and is operable, on cinching of the subsystem through the simple act of pulling on just two strap ends, to stabilize the associated helmet shell on the head of a wearer, with all of the pads in the then-distribution of pads being thereby drawn into proper, defined, shock-managing, load-distributing and load-balancing condition relative to the wearer's head.

The invention discloses a hydrogen preparing process of strengthening methane steam reforming by cyclic fluidized bed adsorption, comprising: transporting 5-200 micron composite catalyst grains into a regenerator for pretreating; degasifying the pretreated composite catalyst and tranfering it to a fluidized bed reactor for reducing; charing methane and steam into the fluidized bed reactor in the water-carbon ratio of 2-10, and making the fluidized composite catalyst perform reforming hydrogen preparing reaction with methane and steam at the same time, and finally transferring the composite catalyst into regnerator to be regenerated and recycled, where the reacting time is 1s-5min, the reacting gas speed is 0.3-1.0m / s, and the ratio of composite catalyst to methane is 10 : 1-0.002 : 1 in g / ml. And it also discloses a device of implementing the above process. And the process can implement stable and continuous operation of fluidized bed reactor, and has advantages of high mass and heat transfer efficiencies.

The invention belongs to the technical field of simulation integrated circuits, and discloses a low-power-consumption sub-threshold type CMOS band gap reference voltage circuit. The circuit comprises a start circuit, a reference current source generation circuit, a voltage division circuit and a reference voltage output circuit. The start circuit is used for enabling a reference voltage source to get rid of a zero degeneracy point and to work under specific work voltage. The reference current source generation circuit is used for generating current to provide bias for a rear end circuit, and MOS transistors in the rear end circuit all work in a sub-threshold region. The voltage division circuit is used for enabling an output circuit to reach required technical indexes and generating a negative temperature coefficient. The reference voltage output circuit is used for generating voltage with a positive temperature coefficient and making the output voltage Vref have the zero temperature characteristic. The low-power-consumption sub-threshold type CMOS band gap reference voltage circuit has the advantages of being low in work voltage, low in power consumption and low in temperature coefficient.

The invention provides an ultrasonic welding method of Al / Ti dissimilar metal TIG electrical arc micro-melting brazing and following welding, wherein an isochronous and stable ultrasonic vibration system is added in the TIG micro-melting brazing process, and the simultaneous and equi-directional welding of TIG micro-melting brazing and following welding is realized through a spherical interlinking device. The method comprises the following steps of: enabling a welding gun tungsten electrode and a test piece to reach reasonable welding height by vertically adjusting the position of a welding gun; enabling a continuous vibration ball to cling to the surface of the test piece by vertically adjusting an ultrasonic transmitting device; measuring the distance d from the contact point of the continuous vibration ball and the surface of the test piece to a TIG welding gun tungsten electrode by horizontally adjusting an ultrasonic generating device to enable d to satisfy welding requirements; and reasonably matching an ultrasonic vibration device and a TIG welding gun by adjusting d, and adjusting the acting position of ultrasonic vibration by adjusting d. The invention has strong process applicability and good stability, realizes the semi-automatic welding of Al / Ti dissimilar metal connection, and has wider usability and good improving action for the welding joints of TIG micro-melting brazing for various dissimilar metals.

The invention discloses a method for calculating the optimal admitting ability for wind power multipoint access of a regional power grid and belongs to the technical field of wind power penetration methods of the power grid. The method for calculating the optimal admitting ability for the wind power multipoint access of the regional power grid comprises the steps that the installed capacity of all wind power plants is initialized, and data such as the local wind speed are acquired; the output condition of all the wind power plants is calculated, and unit commitment and optimization within all dispatching cycles are conducted, so that an annual unit commitment mode of an electric power system comprising the wind power plants is obtained; power flow calculation is conducted based on each period of time, whether an operation constraint condition of the system is met is verified, and a final objective function value is calculated after simulation is conducted on the system for more than 8760 hours; the installed capacity of the wind power plants is updated, optimized iteration is conducted on an objective function, and optimal solution of the wind power generating capacity is achieved, namely the optimal admitting ability of the power grid which enables the economical efficiency of the system to be optimized on the premise that the safety and stability constraint conditions are met is achieved. According to the method for calculating the optimal admitting ability for the wind power multipoint access of the regional power grid, an optimal wind power admitting capacity calculation model with the largest net earning of a wind power plant and power grid combination system (with the environmental benefit considered) as the purpose is established, and suggestions can be provided for the proper establishment of the installed capacity of the regional wind power plants.

A direct touch type metal diaphragm valve, wherein durability of the valve, that is to say, the ensured number of continuous open / close operations of the valve, is substantially increased under conditions that an appropriate flow rate coefficient Cv is maintained, and changes of the afore-mentioned Cv value over time are mitigated by means of restricting the deformation of the valve seat over time. The afore-mentioned metal diaphragm is formed in a round, reverse-dish shape by laminating a plural number of thin stainless steel plates and a thin Nickel.Cobalt alloy plate, and its center part is bulged upward, and the maximum valve stroke of the valve is regulated to be 55% to 70% of the distance of the maximum bulge height Δh of the afore-mentioned metal diaphragm.

The invention discloses a frost-less air-source heat pump hot water unit and a proportional-integral-differential control method for the same. The proportional-integral-differential control method includes performing computation according to received air temperature and humidity parameters, received air pressure parameters and received surface temperature parameters of an evaporator when outdoor temperature parameters which are transmitted by a temperature and humidity sensor and are received by a computation controller are lower than 0 DEG C, controlling the opening of an electronic expansion valve according to a computation result and regulating the surface temperature of the evaporator by means of increasing or reducing the opening of the electronic expansion valve so that the surface temperature of the evaporator is constantly higher than a frost formation point; and enabling a silicon-controlled power regulator to judge a suction superheat degree of a compressor according to received suction temperature and suction pressure of the compressor, increasing or reducing the power of an electric heater and maintaining that the suction superheat degree of the compressor only varies within a set value range. The frost-less air-source heat pump hot water unit and the proportional-integral-differential control method have the advantage that adjustment for the opening of the electronic expansion valve is matched with adjustment for the power of the electronic heater, so that the purpose of maintaining safe and efficient running of a system is achieved.

The present invention provides a number of innovations in the area of computational process control (CPC). CPC offers unique diagnostic capability during chip manufacturing cycle by analyzing temporal drift of a lithography apparatus / process, and provides a solution towards achieving performance stability of the lithography apparatus / process. Embodiments of the present invention enable optimized process windows and higher yields by keeping performance of a lithography apparatus and / or parameters of a lithography process substantially close to a pre-defined baseline condition. This is done by comparing the measured temporal drift to a baseline performance using a lithography process simulation model. Once in manufacturing, CPC optimizes a scanner for specific patterns or reticles by leveraging wafer metrology techniques and feedback loop, and monitors and controls, among other things, overlay and / or CD uniformity (CDU) performance over time to continuously maintain the system close to the baseline condition.

The invention provides a hybrid finite time control method for quadrotor accurate trajectory tracking. The method comprises the steps: establishing a kinematic model and a dynamical model of a quad-rotor unmanned aerial vehicle; designing a vertical control law of the vertical motion according to a height tracking error of the quadrotor unmanned aerial vehicle and an adaptive integral sliding surface design; on the basis of a horizontal position tracking error of the quadrotor unmanned aerial vehicle, designing a horizontal control law of the horizontal motion based on a backstepping method; and designing a finite time disturbance observer based on the attitude angle of quadrotor unmanned aerial vehicle and designing a precise attitude stability control law by combining a non-singular terminal sliding-mode control law and the finite time disturbance observer. According to the invention, the quad-rotor is classified into three subsystems of the height, horizontal position and attitude and three kinds of control strategies are designed respectively; and on the basis of the hybrid control scheme, the trajectory tracking error is stabilized rapidly. The accurate trajectory tracking ofthe quadrotor can be realized under the condition that the unknown model parameters and the external disturbance are allowed; and the manipulation is more flexible.

An electric network transformer monitoring device comprises a data acquisition unit, a communication unit, a data processing unit, a control unit and a power supply unit, wherein the data acquisition unit consists of a filter circuit, a sampling circuit and a GPS timing circuit. The monitoring method provided by the invention applies unified time labels on the acquired transformer parameters through the GPS timing circuit of each electric network transformer monitoring device, transmits the monitored transformer parameters to an electric network dispatching center, judges and positions the internal faults of each transformer winding in the electric network, carries out the voltage stability analysis of the whole electric network according to the state of each transformer at the same time, reliably guarantees the safe and stable operation of local electric networks, and realizes the real-time monitoring of the wide-area electric network.

An inertia / GNSS / satellite beacon based integrated antenna stabilization tracking system utilizes a low-cost MEMS (Micro Electro Mechanical System) inertia / GNSS integrated navigation system as a motion sensor, the system is installed on a base of the antenna stabilization tracking control system, the control system solves the angular rate output by the integrated navigation system through coordinate transformation to obtain the motion angular velocity of the antenna surface, and an antenna is subjected to first-stage inertia stabilization tracking control; in addition, the inertia / GNSS integrated navigation system can calculate to obtain the high-precision angle of pitch, roll angle and azimuth of the base through a Kalman filtering integrated navigation algorithm to perform second-stage stabilization tracking control on the antenna surface; besides, a satellite signal receiver can calculate to obtain the azimuth and angle of pitch of the current antenna surface deviating from a satellite through the antenna surface active scanning motion and the signal peak recognition technology for completing third-stage stabilization tracking control so as to control the antenna to obtain good tracking effects and to further form closed-loop stabilization control.

The present invention proposes a measurement-based connection admission control device for a packet data network, comprising at least one measurement module adapted to measure packet data traffic in said packet data network and to output corresponding measurement results; at least one estimation module adapted to perform an estimation to obtain an estimated maximal rate envelope of traffic based on said measurement results, and an admission control module adapted to admit a requested new connection in said packet data network based on the estimated maximal rate envelope of traffic.

The invention relates to a high speed multi-dimensional vibration measuring device and method based on a stripe target. The device comprises a stripe target, an imaging module, a signal control and processing module and a display module. The method includes the following steps: arranging the stripe target on a vibration structure to be measured; adopting an image module to conduct continuous imaging and recording on the stripe target; utilizing the imaging module to transmit the image of the stripe target to the signal control and processing module; utilizing the signal control and processing module to conduct Fourier transform on the stripes at the same position of the same stripe target in each frame of the image, adopting a certain peak value frequency correction method to accurate correct the peak value frequency, and then utilizing the imaging mathematical relation and the corrected peak value frequency to obtain a time domain curve with stripe target structure vibration, namely acquiring structure vibration signals through reduction; displaying an image processing result through a display module or conducting further data processing through vibration signals. By means of the device and method, vibration measurement of points, lines and faces in certain range is achieved, the measurement speed is high, and the accuracy is high.

The invention relates to a method for continuously producing large-particle spherical cobalt carbonate. The method comprises the following steps: manufacturing a turbid liquid containing small-particle-size cobalt carbonate seed crystal and manufacturing a turbid liquid containing large-particle spherical cobalt carbonate, stirring the turbid liquid containing the small-particle-size cobalt carbonate seed crystal and the turbid liquid containing large-particle-size cobalt carbonate to form a mixed liquid, carrying out solid-liquid separation, washing and filter pressing to obtain a filter cake as a large-particle cobalt carbonate filter cake, drying the filter cake, and repeatedly operating to obtain the large-particle cobalt carbonate powder. According to the method disclosed by the invention, the small-particle-size cobalt carbonate seed crystal is adopted to control the particle size of the large-particle cobalt carbonate in reaction mother liquor, so that the degree of sphericity of cobalt carbonate produced by continuous production can be ensured to be high, the particle size can be stably controlled within the range of 15+ / -0.5 microns, and the consistency and the stability of the particle size of the large-particle spherical cobalt carbonate through large-scale continuous production can be realized; the method is simple in process, easy to operate and low in cost, and can provide the high-quality raw material for producing high-end lithium cobalt oxide; the carbonate is used as a precipitant, so that the environment can be optimized; the production efficiency can be improved, and the wide application prospect can be achieved.

The invention provides a control method for eliminating the upper body posture shaking of a double-foot humanoid robot. The robot is provided with a waist part and a posture sensor. The method comprises the following steps of: generating a planned gait of the robot; measuring the inclination angle and the angular speed of the upper body of the robot through the posture sensor; calculating the correction of a joint of the waist part according to the inclination angle and the angular speed; and adjusting the joint according to the correction so as to eliminate the upper body posture shaking of the robot. In the method, only the waist joint is adjusted without affecting the landing time of the robot; and the method achieves effects in the entire walking process or operating process of the robot.