251results 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.

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 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 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.

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 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.