253results about How to "Shorten the stabilization time" patented technology

A robotic cell enables a robotic station to be downsized and both high maintainability and high rigidity to be attained. To this end, the robotic cell for assembling parts by using multiple robots includes multiple booths for housing multiple trestles, on each of which a pair of robotic arms are mounted, with the trestles adjoining one another. Each trestle has an opening portion on one side surface thereof, through which a power controller box is carried in and out. To compensate for a decrease in rigidity of the trestle due to the opening portion, a connecting member is used for coupling two trestles adjacent to each other across the respective booths. Both end portions of each connecting member are fastened to the both trestles with screws, respectively.

The invention relates to a method and a device for fast measuring the coal bed gas pressure through upward remote-distance hole drilling. According to the method, firstly, high-pressure grouting is carried out on each rock stratum under the coal bed to be tested through hole drilling, various cracks are blocked, then, the drilling is carried out into the coal bed, a four-way pipe is inserted, in addition, a capsule hole sealing device provided with a gas pipe, a grouting pipe and a water filling joint is connected to a position near a hole opening of the drilling hole, firstly, a manual pressure test pump is used for filling water into the capsule hole sealing device through a water filling joint so that the capsule hole sealing device is expanded, and the drilling hole is pre-sealed; then, a low-pressure hole sealing pump is connected with the grouting pipe, cement slurry is filled into the drilling hole, after the cement slurry overflows from the gas pipe through the four-way pipe, a pressure meter is connected onto the gas pipe arranged at the hole opening part, and the coal bed gas pressure can be measured. The method and the device can be used for measuring the upward coal bed gas pressure with the distance within 50m, the roadway engineering dug for coal bed gas pressure measurement can be reduced, the measuring equipment is simple, and the operation is simple and convenient.

A reference voltage generator includes: a reference voltage source 1 that generates a direct-current voltage that is used as a reference; a low-pass filter 2 that is connected to an output node of the reference voltage source; a first voltage buffer circuit 10 with an input terminal to which the output node of the reference voltage source is connected and an output terminal to which an output node of the low-pass filter is connected, which has a voltage gain of one time; and a hysteresis comparator 11 with one input terminal to which the output node of the reference voltage source is connected and an other input terminal to which the output node of the low-pass filter is connected. At start-up, during a time period in which a voltage difference between an output of the reference voltage source and an output of the low-pass filter exceeds a predetermined value, an output impedance of the first voltage buffer circuit is controlled based on an output signal of the hysteresis comparator. At start-up, the low-pass filter that reduces noise is charged with a low impedance rapidly, and thus an output voltage can be stabilized rapidly.

In a light receiving amplifier circuit, a dummy amplifier has an identical structure with an IV amplifier except that the dummy amplifier is not connected to a light receiving element and includes a capacitor, i.e., a band limiting capacitor. Further, the capacitor is connected between the collector of the grounded-emitter transistor Tr and GND.

The invention discloses a high-sensitivity light trap measuring device and a measuring method thereof. The high-sensitivity light trap measuring device comprises a sample cell module, an initial capturing light trap module, a suspension measurement light trap module and a position detecting module. Firstly, particles are captured at a light trap balance point by means of initial capturing light and are quickly stabilized. Then suspension measuring light is started and simultaneously the initial capturing light is eliminated so that the particles are stabilized at the light trap balance point which is formed by the suspension measuring light. Then high-sensitivity measurement on a displacement signal and an acceleration signal is performed. According to the measuring method, on the condition of low damping in air or vacuum, capturing efficiency can be effectively improved and furthermore the particles are quickly stabilized, thereby preventing a defect of measurement application deterioration caused by long-time oscillation after capturing the particles by a low-rigidity light trap. The high-sensitivity light trap measuring device and the measuring method thereof have advantages of eliminating defects in a common light trap measuring device, realizing high-efficiency capture and quick stabilization of the particles, and furthermore obtaining high measurement sensitivity on the displacement signal and the acceleration signal.

An UAV dynamic path planning method suitable for high-speed environment combines the theory of kinematic mechanics, establishes speed-dependent gravitational and repulsive functions, increases the virtual resistance, abandons the concept of "potential field", and directly calculates the resultant force born by the UAV through the virtual force function. The simulation experiments show that the method is effective and safe when the UAV is moving at high speed. The beneficial effect is that the method of the invention does not need to generate the motion path of the UAV, and only needs to calculate the expected resultant force of the UAV, not only reduces the complexity of the algorithm, but also substitutes the desired acceleration for the desired position as the input of the control system, so that one closed loop is omitted, the system complexity is lowered, the stabilizing time is greatly shortened, and the problem that the existing path planning method is not suitable for the high speed environment.

The electrode structure for measuring a bio-signal and an apparatus for measuring an electrocardiogram using the same are disclosed. The electrode structure for measuring a bio-signal, comprises an electrode pad to measure bio-signals based on capacitive coupling between the electrode pad and human skin; an absorption layer formed at one side of the electrode pad; and a preamplifier which is electrically connected with the electrode pad and filters noise from the bio-signals from the electrode pad and amplifies and outputs the signals. Thus, the initial noise stabilization time can be reduced, and stable electrocardiogram signals can be obtained quickly without noises.

The invention relates to a method for preparing polyacrylonitrile carbon fiber with gamma ray irradiation. The method comprises the following steps: carrying out appropriate doses of gamma ray irradiation for polyacrylonitrile fiber in air, vacuum or inert atmosphere, and thus generating part of cyclization and crosslinking structure; carrying out thermal oxidation stabilization for 0-100 min in air atmosphere to achieve full cyclization and crosslinking; carrying out low-temperature carbonization and high-temperature carbonization so as to prepare the high-performance carbon fiber. The method carries out pre-irradiation treatment before thermal stabilization, so that the thermal stabilization time can be shortened, the production efficiency can be improved, and polyacrylonitrile molecules can form a rigid structure with a regular structure and strong heat resistance. Higher rigid drafting can be applied in the thermal stabilization process, the orientation degree graphite-like sheets in the carbon fiber is facilitated, and the high-performance carbon fiber is prepared.

The present invention provides an image printing apparatus which comprises registration roller unit which convey an image recording sheet toward an image transfer position at which the toner image is transferred onto the image recording sheet, a sensor which is provided between the registration roller unit and the image transfer position to detect the image recording sheet, and a control unit which controls driving of the registration roller unit. In order to make the time required for each image recording sheet to reach the image transfer position constant, the image printing apparatus is adapted to start the driving of the registration roller unit at the first sheet convey speed higher than the linear speed of the surface of the image carrier, measure the time required until the leading end of a conveyed image recording sheet is detected by the sensor after a driving signal for the registration roller unit is output, and reduce the sheet convey speed of the registration roller unit to the second sheet convey speed at the timing based on the measurement result.

The invention discloses a vibration suppression method for flexible manipulators. According to the method disclosed by the invention, a model compensation based control method is adopted, and a model is associated with a speed control ring and composed of an electrical component model and a mechanical component model which are subjected to order reduction. The difference value between the speed of a driven mechanical component and the speed of a motor is subjected to real-time calculation and multiplied by a factor, and then the obtained value is added into a speed instruction of the motor, thereby achieving an effect of suppressing the transient vibration of the driven mechanical component. According to the invention, the model compensation based control method is adopted, and a non-time-delay damping effect is established on the driven mechanical component, namely that a vibration attenuation effect is achieved, thereby effectively shortening the stabilization time of a system, and improving the vibration suppression control accuracy of flexible manipulators. The load speed is assessed through the model, thereby reducing the cost of hardware such as sensors and the like. Model parameters are acquired according to experimental data, and the parameters can be subjected to on-site adjustment; and the control method is simple, and easy to realize.

The invention relates to a gas multi-pass cell temperature control system and method based on self-adaptive interval PID control, and belongs to the field of gas multi-pass cell temperature control. The outer wall of a gas sample cell is wrapped by a heating film to realize heating of the gas multi-pass cell, a PT1000 resistance temperature sensor is arranged between the outer wall of the gas sample cell and the heating film to detect the working temperature of the gas multi-pass cell in real time, and heat insulation cotton is adopted for the integral gas multi-pass cell to form a heat insulation effect. Improvement is made on the basis of a traditional PID control algorithm for solving the problem of large overshoot caused by the fact that a controlled object has complex structure and responses slowly, the control process is subdivided into a plurality of intervals according to temperature deviation values, a proportional amplification coefficient, an integral coefficient and a differential coefficient are set in each interval according to the interval value and the change rate of the temperature deviation value, the adaptive interval PID control algorithm is achieved, and accordingly, the temperature is controlled quickly without overshoot. Reliable guarantee is provided for improvement of performance of a carbon dioxide isotope detection system.

The invention discloses a system and a method for controlling the water level of a deaerator. The system comprises a water level acquisition module and an internal model controller, wherein the water level acquisition module is used for acquiring the current water level of the deaerator and transmitting the acquired current water level to the internal model controller; and the internal model controller is used for regulating the valve position of a deaerator regulating valve according to both the set water level and the current water level of the deaerator, thereby changing the rate of flow of the condensed water and realizing the control on the water level of the deaerator. The system / method can obviously improve the regulation quality of the water level of the deaerator in a generator set for both a steady-state process and a dynamic-state process.

The invention provides a method and a device for medium-consistency refining and pumping. The method comprises the following steps of: after low-consistency slurry is concentrated by concentration equipment, feeding the slurry into a medium-consistency vertical pipe to regulate the consistency; and after the consistency reaches a set value, pumping the slurry into a subsequent medium-consistency disk mill. The device comprises the concentration equipment, the medium-consistency vertical pipe, a medium-consistency pump, a slurry pipe and the medium-consistency disk mill which are connected in turn, wherein two white water pipelines on the medium-consistency vertical pipe are provided with a white water coarse adjustment valve and a white water fine adjustment valve respectively; a concentration meter connected with the white water fine adjustment valve is arranged on the slurry pipe; the concentration meter controls the opening of the white water fine adjustment valve in a PID adjustment mode; and a buffer segment is formed on the slurry pipe, wherein the pipeline length of the buffer segment is at least 2 meters; and the pipe diameter of the buffer segment is 2 to 3 times larger than that of the pipeline of a non-buffer segment. Compared with the conventional method for controlling and adjusting the pump output of the medium-consistency pump by using a liquid level, the device can stabilize the pump output flow better; simultaneously, the pumping potential of the medium-consistency pump is developed better, and the pumping consistency can be improved by 2 to 4 percent.

An image forming apparatus for forming color images comprising at least two or more colors, having a function of magnification correction of image size by one page unit, the image forming apparatus including: an image carrier; a polygonal mirror rotator independently provided for each color; and a controller which simultaneously conducts first control for changing rotation speed of the polygonal mirror rotator in order for changing image size in a sub-scanning direction perpendicular to a main scanning direction, and second control for correcting a correction amount for color registration error depending on magnification correction of image size, and for adjusting a rotating phase of the polygonal mirror rotator depending on the corrected correction amount for color registration error.

The invention relates to a method for pretreating landfill leachate by a quasi aerobiotic landfilling body. The method for pretreating comprises the steps: constructing an urban domestic garbage quasi aerobiotic landfilling body; designing a proper reflux process to perform home position treatment on leachate by using a unique aerobiotic-facultative anaerobic-anaerobic environment of the quasi aerobiotic landfilling body. The method has the advantages that concentration of BOD5, CODCr and NH4<+>-N of the leachate is effectively reduced, and a stabilizing process of a garbage heap is accelerated. A specific process comprises the steps: the leachate flows into the landfilling body by a pump by a collection system, in an aerobic zone, ammonia is oxidated to NO3<-> under the action of autotrophic nitrobacteria, in an anoxic zone, NO3<-> is reduced to N2 by using denitrifying bacteria with organic matter as an electron carrier, N2 is released from a liquid phase and conversion and removal of NH4<+>- are realized, and degradation methanogenesis of organic matter is realized. The method can solve the prominent problem of overhigh ammonia nitrogen concentration in the landfill leachate and effectively reduces concentration of BOD5 and CODCr in the leachate.

The control system includes following parts and structure: a molding resin storage tank for loading photosensitive resin, and worktable capable of moving work piece up and down setup inside the resin storage; accessorial storage for supplying resin setup on the resin storage; reflecting type laser position sensor in use for detecting position of liquid level setup above liquid level of resin; being connected to computer, the sensor sends signal received from position of liquid level to computer. Through control card, the computer is connected to drive, and motor. Compensation mechanism of sinking block is connected to the output end of motor. Sinking block is connected to compensation mechanism of sinking block. Through drive, control card, motor receives control signal sent from computer and realizes rotation. Compensation mechanism of sinking block drives sinking block up down to adjust liquid level in the resin storage to keep stable liquid level.

The invention discloses a wall-mounted gas boiler water temperature control method which comprises the water flow rate detecting step, the water temperature detecting step and the gas proportional valve adjusting step. In the water flow rate detecting step, detecting the current water flow rate and judging whether a user uses water according to the current water flow rate; in the water temperature detecting step, detecting the current water temperature when the user is detected to use water and calculating the temperature difference between the current water temperature and the target water temperature of the user; and in the gas proportional valve adjusting step, adjusting the opening of the gas proportional valve according to the temperature difference and the current water flow rate. The wall-mounted gas boiler water temperature control method has the advantage of precise temperature control. The invention further discloses a wall-mounted gas boiler water temperature control system.

The invention relates to a mixed sine maneuvering path guiding method for a high-paddle fundamental frequency satellite. The mixed sine maneuvering path guiding method for a high-paddle fundamental frequency satellite is characterized in that based on reasonable distribution of maneuvering time and stabilization time, according to a moment and an angular momentum capacity of an execution mechanism, an angular acceleration curve is designed, wherein the angular acceleration curve shows an angular acceleration change rule that an angular acceleration is changed into zero from a positive value, then is changed into a negative value from zero and then is changed into zero from the negative value; and one half of a whole period of a sine curve mixed step function is a positive value curve part and the other half is a negative value curve part. The mixed sine maneuvering path guiding method for a high-paddle fundamental frequency satellite retains the advantage of small excitation of a sine maneuvering path on a flexible paddle, combines the advantage of time optimality of a step function, harmonizes the contradiction between maneuvering rapidity and paddle excitation smoothness, is especially suitable for providing path program for a large-angle, rapid and high-paddle fundamental frequency satellite in imaging breadth increasing, instant observation on a emergency area or stereo imaging rapid maneuvering, and satisfies requirements of rapid and stable maneuvering performances of a high-paddle fundamental frequency satellite.

A proximity field exposure device comprises an illumination subsystem, a working table, a position measurement subsystem, a focusing and leveling subsystem and an aligning subsystem. Uniform parallel rays which are emitted from the illumination subsystem are incident on a mask on a reticle stage. The proximity field exposure device is characterized in that a field substrate of the exposure device is small; and the working table has six degrees of freedom, namely XYZRxRyRz, wherein long-range motion can be carried out in the XY direction and small-range adjustment can be conducted in the ZRxRyRz direction. Before exposure, surface shape measurement and alignment are firstly carried out on the substrate. During the exposure process, according to the surface shape date of the substrate and the alignment data, the illumination system is turned on for field exposure in dependence on exposure formulation.

The invention provides a driving device and a driving method thereof. The driving device comprises a digital-analog conversion circuit and a signal amplifying circuit, wherein, the digital-analog conversion circuit is used to receive digital data and converts the digital data into an analog signal; the signal amplifying circuit is coupled with the digital-analog conversion circuit for receiving the analog signal to generate a driving signal and dynamically changing the driving capability of the driving signal according to at least one bit in the digital data.

The invention discloses an evaporation source device. The evaporation source device comprises a crucible, a coil, a buoyancy ring and an evaporation interface heating device, wherein the coil surrounds outside the crucible, a cylindrical hollow bulge is arranged in the middle of the crucible, the bulge is internally provided with an iron core, the buoyancy ring is of a hollow annular structure and sheaths on the bulge in the middle of the crucible, the evaporation interface heating device comprises a plurality of concentric annulus heating sheets, the iron flake of each annulus heating sheet is wrapped by ceramic, and the evaporation interface heating device sheaths on the bulge in the middle of the crucible and is arranged on the buoyancy ring. The evaporation source device heats by induction eddy, so that on the one hand, on even ground, stabilization time of evaporation rate can be remarkably shortened; on the other hand, the evaporation interface can be directly heated at real time so as to supplement heat taken away by evaporation, thus being beneficial to improving evaporation rate and evaporation stability and being easy to form uniform coating films.

Provided is a charge pump circuit capable of shortening a settling time. When a boosted voltage (Vout) becomes high to be equal to or larger than an overshoot voltage, a transistor (T1) is turned on and an output terminal of the charge pump circuit is discharged. Accordingly, it is easy to reduce the boosted voltage (Vout) after an occurrence of an overshoot, and a period of time in which the boosted voltage (Vout) decreases from a voltage after the occurrence of the overshoot to a desired voltage is shortened, leading to a reduction in a settling time.

The invention provides a nano-zinc oxide composite triazophos pesticide and a preparation method therefor. The preparation method comprises the following steps: mixing and stirring nano-zinc oxide and deionized water to obtain a nano-zinc oxide suspension liquid; mixing the nano-zinc oxide suspension liquid with a stearic acid soluble ethanol solution, stirring for 30-70 min at the temperature of 56-79 DEG C, performing decompression suction filtration, washing, drying and room temperature cooling on the stirred solution, and grinding for 10-30 minutes to obtain stearic acid modified nano-zinc oxide powder; mixing the stearic acid modified nano-zinc oxide powder with Awei triazophos with the mass fraction of 20% and Awei triazophos cyclohexanone with the mass fraction of 20% to obtain a first mixed solution, then mixing the first mixed solution with a lauryl sodium sulfate solution to obtain a second mixed solution, and stirring the second mixed solution for 30-70 min at the temperature of 27-69 DEG C to obtain the nano-zinc oxide composite triazophos pesticide. The nano-zinc oxide composite triazophos pesticide provided by the invention is simple in preparation method, environment-friendly and short in chemical residence time.

The invention discloses a special fertilizer for weak gluten wheat, comprising the following effective elements based on pure nutrients by with weight percent: 20.0-24.0 percent of nitrogen, 8.0-12.0 percent of phosphorus pentoxide, 10.0-14.0 percent of potassium oxide, 3.5-5.5 percent of calcium oxide, 1.0-4.0 percent of sulfur and 0.5-1.0 percent of zinc. The special fertilizer for the weak gluten wheat has complete nutrients, reasonable nutrient proportion according with to a nutrient absorbing rule of the weak gluten wheat and high utilization of the fertilizer, thereby obviously promoting the growth of the weak gluten wheat, improving the yield of grains, increasing the economical benefit, improving the quality of the weak gluten wheat and simultaneously reducing the unbeneficial influence on the environment caused by the improper use of nitrogenous fertilizera.

The invention relates to a variable voltage control method of a photovoltaic cell. The variable voltage control method comprises the following steps: (1) external loop control: acquiring voltage of a bus bar in real time; obtaining a bus bar voltage regulation and control value according to bus bar voltage and a bus bar voltage rated value; obtaining a photovoltaic cell output voltage reference value according to the bus bar voltage regulation and control value and photovoltaic maximum power point voltage; (2) internal loop control: acquiring photovoltaic cell output voltage in real time, and obtaining a switch-off ratio of a Boost converter according to the photovoltaic cell output voltage reference value and the photovoltaic cell output voltage; (3) regulating and controlling output power and output voltage of the photovoltaic cell according to the switch-off ratio of the Boost converter. Compared with the prior art, the variable voltage control method adopts voltage double-closed-loop control so that all points on a P-U characteristic curve of the photovoltaic cell can be stabilized at stable points of a photovoltaic system; the variable voltage control method has the advantages of high control precision, good anti-interference performance, high practicability and the like.

The invention discloses a method utilizing herbicide Barban to rapidly cultivate asparagus all male plants strain, which comprises the following steps: 1) amphoteric strain is chosen from the asparagus varieties for production purpose; the amphoteric strain produces asparagus seeds by homologous strain inbred; 2) the asparagus seeds are soaked in Barban, and bud forcing treatment is carried out to the asparagus seeds; 3) the processed asparagus seeds are cultivated in a nutrition pot; flowering takes place after 30 to 35 days; each individual plant respectively hybrid with a female strain, and the seeds of each individual plant are reserved; 4) the seed reserved from each individual plant are processed again by Barban; after flowing, the ratio of male and female flowering is calculated, and super male plants are identified; 5) super male plant clones are reserved and propagated by in vitro culture method; 6) the super male plant is used as the male parent to hybrid excellent female line, and asparagus all male plants strain can be acquired. The method has the advantages that, the time of asparagus from seedling to flowering is greatly reduced; the identification process of super male plants is accelerated; the invention has an important role in the breeding of asparagus all male plants strain, and the application prospect is wide.

A driving apparatus and a driving method thereof are provided. The driving apparatus includes a digital to analog converter and a signal amplifier. The digital to analog converter is used for receiving a digital data and converting the digital data to an analog signal. The signal amplifier is coupled to the digital to analog converter. The signal amplifier is used for receiving the analog signal to generate a driving signal. The signal amplifier also dynamically changes the driving ability of the driving signal according to at least one bit of the digital data.