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42 results about "Real time design" patented technology

Novel sand control screen pipe with adjustable on-site sand stop precision

The invention discloses a novel sand control screen pipe with adjustable on-site sand stop precision, and belongs to the field of oil well completion sand control. The novel sand control screen pipe mainly comprises five parts, namely a central pipe, a fixed-precision sand stop layer, an adjustable-precision sand stop layer, an outer protective sleeve and a sand stop precision precise adjusting mechanism, wherein the central pipe is provided with spirally distributed through holes and is mainly used for supporting the entire screen pipe and allowing oil to pass through; the fixed-precision sand stop layer is mainly used for controlling sand; the adjustable-precision sand stop layer can change the sand stop precision under the adjustment of the precise adjusting mechanism to play a major role in sand control; the outer protective sleeve is mainly used for protecting the internal structure of the screen pipe and reducing erosion effect of internal fluid and sand; and the sand stop precision precise adjusting mechanism is mainly used for adjusting sand stop precision of the adjustable-precision sand stop layer. Compared with the conventional sand control screen pipe with fixed sand stop precision, the adjustable-precision sand control screen pipe can realize on-site real-time design and sand stop precision adjustment aiming at the characteristics of a single well to improve the sand control effect; the novel sand control screen pipe is convenient for mass production of the screen pipe manufacturers and can precisely control the sand control precision; and the novel sand control screen pipe is convenient for screen pipe development, is convenient for suppliers to provide a sand control design, integrated service of the sand control screen pipe, and the like.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Method for compensating system in real time by using hysteresis inversion model

The invention discloses a method for compensating a system in real time by using a hysteresis inversion model in the technical field of control, which comprises the following steps: acquiring input and output signals of a hysteresis system in real time, establishing a hysteresis model for one-to-one mapping between the input and output of the hysteresis system and determining parameters of the established hysteresis model; establishing the hysteresis inversion model of the system according to the input and output signals and the established hysteresis model, obtaining an analytical expression of the hysteresis inversion model and determining the parameters of the hysteresis inversion model; and designing a hysteresis inversion model compensation controller according to the analytical expression of the established hysteresis inversion model and realizing the real-time compensation of the system by using the hysteresis inversion model so as to fulfill the aim of eliminating hysteresis nonlinearity and realize the linearity of the input and output signals. The method has the advantages of simple form, fewer required parameters and favorableness for the real-time design of the hysteresis compensation controller; and a practicable compensation scheme is provided for the high-speed and high-bandwidth positioning and tracking application of the hysteresis system comprising an intelligent material driver.
Owner:上海交睿机器人科技有限公司

Environment test device refrigerating system and energy-saving working condition fast determination method thereof

The invention discloses an environment test device refrigerating system and an energy-saving working condition fast determination method of the environment test device refrigerating system. The environment test device refrigerating system and the energy-saving working condition fast determination method of the environment test device refrigerating system comprises: 1. based on HYSYS, a suitable physical property method and a suitable parameter output mode are selected according to refrigerant properties; 2. special design of process procedures of a refrigerating system is conducted; 3. key point working condition parameters are input and are dynamically calculated to acquire working condition design parameters; and 4. condition ranges are defined, target technical parameters are optimized to embody energy-saving effect. The environment test device refrigerating system and the energy-saving working condition fast determination method of the environment test device refrigerating system can greatly improve efficient of design of the refrigerating system and confirmation of the working condition parameters, overcome all kinds of adverse factors such as limited essential data and limited condition selection of refrigerating fluid of design software of some refrigerating systems, and meanwhile timely design a technological process and acquire the most energy-saving process state parameters according to different environment, timely calculate air quantity and confirm air volume according to the size of loads, and therefore the advantages that the working condition parameters of the refrigerating system can be fast and efficiently confirmed are truly demonstrated.
Owner:CHINA ELECTRONICS TECH GROUP CORP NO 16 INST

Multimedia data transmission system suitable for field cooperation

ActiveCN107483471AMeet the requirements of off-site productionIncrease productivityTransmissionFile transmissionReal time design
The invention discloses a multimedia data transmission system suitable for field cooperation. The system comprises a slice processing module; the slice processing module is used for analyzing data frame structures of a transmission task to perform a slice operation; if all data frame structures of the transmission task are the internal pictures, the slicing is directly performed according to fixed time length; if each data frame structure of the transmission task contains a picture group, the slice processing module performs the following processing: judging whether the length of the picture group achieves a set value, if the length achieves the set value, directly performing the slicing operation according to the picture group; if the length does not achieve the set value, orderly overlapping the number of the picture group until to achieve the set value, and performing the slicing operation according to the picture group with the set value. By combining the respective advantages of the file transmission and the stream transmission, the immediate delivery requirement of using the video content in transmitting can be satisfied without being limited by the frequency double real-time design; the video content can be used both in high broadband and low broadband environment, and the transmission efficiency is improved.
Owner:CHENGDU SOBEY DIGITAL TECH CO LTD

Design method of two-dimensional Fourier transform IP core based on HLS

The invention discloses a design method of a two-dimensional Fourier transform IP core based on HLS. The design method specifically comprises the following steps: splitting two-dimensional Fourier transform in image processing into two one-dimensional Fourier transforms; calculating the one-dimensional Fourier transform by using a DIT radix-2 fast Fourier calculation method; adopting an HLS tool to design a one-dimensional Fourier transform IP core with the processing lengths of 256 and 128, including acceleration design of a twiddle factor, design of a reverse order and design of inverse Fourier transform. According to the invention, the two-dimensional Fourier transform is split; one-dimensional Fourier transform is respectively designed by adopting fast Fourier transform; acceleration is realized in the aspect of software by using a simplified algorithm, hardware IP core design is performed by using HLS, acceleration is realized in the aspect of hardware by using parallel computing,and after two-dimensional Fourier transform in an image processing technology is accelerated, real-time design of algorithm processing is facilitated, and the industrial practicability of an image processing algorithm is improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Non-real-time video and audio file transmission method

ActiveCN107465962AMeet the requirements of off-site productionIncrease productivitySelective content distributionNon real timeComputer hardware
The invention discloses a non-real-time video and audio file transmission method. The method comprises a slicing operation step S2; the slicing step S2 comprises the following steps: analyzing the data frame structure of a transmission task, and performing a slicing operation; if the data frame structure of the transmission task is entirely internal image, directly slicing according to a fixed time length, and if the data frame structure of the transmission task contains an image group, performing the following processing: judging whether the length of the image group reaches a set value, and if so, directly performing the slicing operation according to the image group with the set value; and if not, sequentially superposing the number of the image groups until reaching the set value, and performing the slicing operation according to the image group with the set value. The non-real-time video and audio file transmission method combines the advantages of file transmission and flow transmission, can satisfy the timely transmission requirements of using while transmitting of video contents, the non-real-time video and audio file transmission method is not limited to the real-time design of doubling speed and can be used in high bandwidth and low bandwidth environments, and thus the transmission efficiency is improved.
Owner:CHENGDU SOBEY DIGITAL TECH CO LTD

Fuel conveying method for internal combustion engine using gas-liquid two-phase natural gas as fuel

The invention discloses a fuel conveying method for an internal combustion engine using a gas-liquid two-phase natural gas as the fuel. The method comprises the following steps: conveying a liquid-state compressed natural gas source and a gas-state compressed natural gas source to a heat insulation common rail in a heat insulation manner; mixing the liquid-state compressed natural gas source with the gas-state compressed natural gas source in the thermal insulation common rail, and conveying the mixture into a gas cylinder through an electrically controlled fuel injector; the fuel entering the heat insulation common rail (5) is divided into a liquid route and a gas route; the liquid route is conveyed to the heat insulation common rail (5) by a liquid-state compressed natural gas cylinder (1) through a heat insulation low-pressure pipe (2) and a heat insulation pressure pump (10); and the gas route enters the heat insulation common rail (5) by a gas-state compressed natural gas cylinder (7) through corresponding pipes and valves. The fuel conveying method for the internal combustion engine using the gas-liquid two-phase natural gas as the fuel allows the gas phase natural gas and the liquid phase natural gas to be flashed and boiled upon entering the gas cylinder; and real-time designs and controls of the gas and liquid components of the two-phase natural gas are subjected to different working conditions. Due to the fact that the gas-liquid two-phase natural gas is combusted, the CO emission, the CO2 emission and the PM emission are substantially low, without NMHC. The fuel is injected during the compression process, and accordingly the HC emission is low. The temperature in the cylinder is low; the NOX emission is low; and the emission performance is low.
Owner:SOUTHWEST JIAOTONG UNIV

Sustainable package design method based on fractal geometry and package material

The invention relates to a package design method and a package material, and belongs to the field of package design. The sustainable package design method based on fractal geometry is characterized inthat a two-dimensional prototype is selected for carrying out fractal geometry calculation according to the packaging requirements of a product needing to be packaged, a three-dimensional modular material of the packaged product is iteratively formed, and then is made into a three-dimensional package which meets the requirements of the product according to the shape requirements of the package, is directly output in the form of a solid through integral forming, or the modular materials are combined or disassembled to be output to serve as a three-dimensional package. According to the method,the package design and production are directly carried out through the computer design according to the requirements of the product package; the infinite magnification and self-similar modularity characteristic of a fractal geometric mathematical model are utilized, so that the package has the sustainable utilization characteristic during the package design; the real-time design and real-time production of the package are realized; the package can be sustainably recycled; and the service life of the package is greatly prolonged.
Owner:SHANGHAI UNIV OF ENG SCI

Method for compensating system in real time by using hysteresis inversion model

The invention discloses a method for compensating a system in real time by using a hysteresis inversion model in the technical field of control, which comprises the following steps: acquiring input and output signals of a hysteresis system in real time, establishing a hysteresis model for one-to-one mapping between the input and output of the hysteresis system and determining parameters of the established hysteresis model; establishing the hysteresis inversion model of the system according to the input and output signals and the established hysteresis model, obtaining an analytical expressionof the hysteresis inversion model and determining the parameters of the hysteresis inversion model; and designing a hysteresis inversion model compensation controller according to the analytical expression of the established hysteresis inversion model and realizing the real-time compensation of the system by using the hysteresis inversion model so as to fulfill the aim of eliminating hysteresis nonlinearity and realize the linearity of the input and output signals. The method has the advantages of simple form, fewer required parameters and favorableness for the real-time design of the hysteresis compensation controller; and a practicable compensation scheme is provided for the high-speed and high-bandwidth positioning and tracking application of the hysteresis system comprising an intelligent material driver.
Owner:上海交睿机器人科技有限公司
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