56 results about "Experimental control" patented technology

The invention disclose an aero-acoustic experimental apparatus, which consists of a high-pressure static air flow acoustic pneumatic device and a low-pressure static air flow acoustic pneumatic device, wherein when the highest flow Mach number reaches between 0.65 and 0.8 M and the working pressure is between 0.005 and 0.75 MPa, the measurement for a sound field and a flow field of air flow in a pipeline is achieved through simulation, and the frequencies and the amplitude values of the flow rate and the sound pressure on the surface of a sound lining material are measured and analyzed; under the condition that the air flow reaches the sound velocity and the working pressure, the measurements for the sound field and the flow field under the action of a loud strong sound source in the pipeline is achieved through simulation, and the acoustic experimental performance of the sound lining material is measured and analyzed; the signal acquisition and the mobile measurement of various detectors are achieved by an experimental control system; and the aero-acoustic experimental apparatus achieves a jet test of air under a static air flow condition and analyzes the flow field distribution and the sound field distribution conditions at various flow rates according to the stated steady flow.

The invention provides an experimental control structure of an unmanned surface vessel, which comprises a shore module, a ship module, a navigation sensor and a ship body propelling and steering mechanism. A data collecting and receiving module collects movement parameter information of a ship body measured by the navigation sensor according to a set control cycle; a ship communication module transfers the movement parameter information of the ship body to a shore communication module; a navigational parameter display module displays the movement parameter information of the ship body; a movement control module carries out movement control resolving according to the movement parameter information of the ship body to obtain a drive instruction of movement of the ship body; and the shore communication module transfers the drive instruction to the ship communication module, and the ship communication module transfers an execution mechanism drive module and controls the ship body propelling and steering mechanism to drive the ship body to move according to the control requirement. According to the experimental control structure, modifying and validating of a movement control algorithm can be finished just by modifying shore control software in an experimental process without modifying ship control software, and a research of a movement control experiment of the unmanned surface vessel is conveniently carried out.

The invention discloses a test system for a rock breaking mode at high ground stress and osmotic pressure. The test system comprises a test device for the rock breaking mode at the high ground stress and osmotic pressure and utilizes a test technique, wherein the test device is an organic combination of main equipment including an experimental sample mounting system, a high ground stress applying system, an high osmotic pressure applying system, an experimental control system, a measurement and data collection system and the like. According to the test system, the rock breaking mode and a rock breaking evolvement rule at the high ground stress and osmotic pressure can be tested.

Experimental investigation system of fuel cell hybrid power system includes loading system, experimental control system, hybrid power system and test system. The loading system simulates road condition, dynamics characteristics of car body, and drivers. Combining with operation conditions of each part in the system, the experimental control system converts each condition to control command for each part, controls and adjusts running condition. The hybrid power system is subject to the disclosed experimental investigation system investigates. The test system collects, monitors and records operation conditions of other three systems. The invention carries out experimental investigation functions of testing and checking fuel cell hybrid power system, that traditional testing system for internal combustion engine does not perform. Thus, the invention possesses high innovation.

A method and apparatus for evaluating the effects of toxic substances in the environment on aquatic organisms is disclosed. The apparatus allows for exposure of test organisms, placed in test chambers made of partially submerged sieves, to water that is pumped from an urban creek at preset time intervals. The invention also allows for maintenance of cool temperatures in the exposure chambers, both for the treatment (i.e., creek water) and the experimental control.

The invention relates to a movable water loss and soil erosion laboratory which comprises a power and movable towing vehicle (2), a variable slope experimental groove (3), a down-spraying type sprinkler (4), a water supply system (5) and a water loss and soil erosion observation system (6); wherein, the power and movable towing vehicle (2) comprises a power towing vehicle (7), a mobile generator (8) and an external power source (9), and the power towing vehicle (7) comprises a driving cab (47), a carriage (22) and an experimental control room (38) positioned between the driving cab (47) and the carriage (22); the mobile generator (8) and the external power source (9) are positioned on the power towing vehicle (7). The invention overcomes the defects of poor mobility, complicated control as well as time-wasting and labor-wasting experiments of various field water loss and soil erosion experimental methods and experimental facilities. The movable water loss and soil erosion laboratory can be conveniently moved in various field experimental sites, and an observing and controlling system can be used for adjusting and controlling the rainfall intensity and the variable slope experimental groove, thus the use and the operation are convenient, and the observing and controlling accuracy can be high.

The invention discloses an automatic comprehensive practical training system, which comprises a mesh plate base frame, a modular replaceable PLC unit, a man-machine interface, a power supply module, a servo drive module, a variable frequency drive module, a wiring terminal box and an experimental control object, wherein the mesh plate base frame is a frame body integratedly formed by a metal base and a steel spray-paint mesh plate; the modular replaceable PLC unit is a programmable controller; and the wiring terminal box is arranged on the mesh plate base frame, and on the basis of the wiring terminal box, all or selective parts of the modular replaceable PLC unit, the experimental control object corresponding to the teaching content, the man-machine interface, the power supply module, the servo drive module and the variable frequency drive module are arranged on the mesh plate base frame and are electrically connected to form a simulation practical training system. When the comprehensive practical training system of the invention is applied, the trainee can design a system scheme according to the teaching content and select devices for assembly and debugging and other practical training, and the teaching quality and comprehension of the trainee beyond book knowledge can be significantly enhanced.

A precision high-speed shuttle device for transporting samples between different positions of a superconducting magnet with different magnetic field strength is provided. The sample equilibrated at the center of the magnet, where the magnetic field is the highest and homogeneous, is shuttled to a higher position above, where the fringe field is lower, for a defined period of time and shuttled back to the center for detection. By shuttling the sample to different positions in the magnet in different experiments one can obtain a field-dependent profile of particular physical parameters. The position and timing of the sample are precisely under the experimental controlled. In this way various magnetic field-dependent nuclear magnetic resonance (NMR) experiments can be conducted in a single high-field NMR spectrometer.

The invention discloses a forming process of a car seat connecting plate. The process is characterized by including the following process steps of firstly, punching locating holes, wherein a long-bar-shaped sheet of which the thickness ranges from 3mm to 10mm is placed on a continuous die, and the locating holes are formed in the two sides of the sheet respectively; secondly, punching assembly holes in the two sides, wherein the gap of single edges between the inner wall surfaces of two female dies and the outer wall surfaces of corresponding punches is set into the range from 0.25mm to 0.5mm, and the first assembly holes and the second assembly holes are punched; thirdly, punching middle assembly holes, wherein the gap of single edges between the inner wall surfaces of the two female dies and the outer wall surfaces of the corresponding punches is set into the range from 0.25mm to 0.5mm, and the third assembly holes are punched; fourthly, conducting semi-shearing, the outer contour of the car seat connecting plate is punched on the sheet, and the outer contour line of the car seat connecting plate is made to sink downwards by 1mm to 2mm; fifthly, conducting blanking, wherein a material is completely cut off along the outer contour line formed in the fourth step, and then a finished product is formed. When the gap of the single edges between the inner wall surfaces of the two female dies and the outer wall surfaces of the corresponding punches is set to be 5% to 10% of the thickness of the sheet through experimental control, the one-time punching process can be achieved, and the defects that the traditional technology secondary punching process is high in the requirement for accuracy of equipment, the production difficulty is large, production cost is high, the yield is low, materials are wasted, and the punches are not uniform in stress, severe in abrasion and short in service life are overcome.

The invention provides a real-time monitoring device for dynamic expansion of a carbonate rock acidified wormhole. The real-time monitoring device comprises an acid liquid injection system, an acid rock reaction system, a nuclear magnetic resonance testing system, an acid liquid recovery treatment system and a data collecting and experimental control system; the acid rock reaction system is used for simulating the formation temperature and pressure; the nuclear magnetic resonance testing system is used for core pore imaging; and the acid liquid recovery treatment system is used for recovering acid liquid and treating waste gas. Dynamic expansion of the carbonate rock acidified wormhole is monitored in real time through the device, the static imaging precision reaches 0.1-100 [mu]m, the shortest dynamic imaging time is 13 s, the requirements of pore accurate description before acidification and wormhole quick imaging during acidification can be met simultaneously, and the problem that as for a reaction fluid displacement experiment, pore change is quick, and consequently imaging is difficult is solved.

The invention belongs to the technical field of numerical control machine tools and particularly relates to a machine tool device for teaching. The invention aims to provide a comprehensive machine tool device with full functions so as to improve a condition of no high-level and full-functional experiment equipment in the school when operation, programming, installation, debugging and maintenance of the numerical control machine tool are trained, and fasten the teaching speed of engineering technical personnel on the aspects of programming, operation and maintenance of the numerical control machine tool. The machine tool device is provided with an open-type experimental control demonstration platform and a machine tool part, wherein the machine tool part comprises a numerically controlled lathe, a lathe control panel and a system operation panel; the open-type experimental control demonstration platform comprises a servo analogue unit, a main shaft frequency conversion unit, a numerical control unit, an input/output unit, a display control unit, a power supply input unit, a step drive unit, a power supply output unit and a cushion box.

The present invention provides a method for predicting a routing arrangement for control cable without preparing experimental control cables. In the method according to the present invention, characteristics of a control cable to be laid are obtained (S1, S2, and S3). The characteristics of the control cable can be obtained by subjecting a test piece of control cable to a known test (tensile test). Next, a length of the control cable and a condition for connecting the control cable are provided as conditions for a computation (S4 and S5). Then, the given length of the cable, the given condition for connecting the cable, and the obtained characteristic of the control cable are used for a computation model, which was formed by dividing the control cable into a plurality of elements, in order to perform a finite element method, and, thus, a routing arrangement is calculated (S7).

The invention discloses an integrated experimental device for controlling a dynamic process of a flow industry, and relates to an experimental control device. The device consists of more than two resistance-capacitance water tanks, and a pipeline-free and valve-free integration mode is used for forming the experimental device for simulating dynamic characteristics of an object. A plurality of control system modes are configured for test. A controlled object of the experimental device is formed by integrating basic units which are resistance-capacitance links without pipelines or valves. The fluidic resistance of a throttling hole is regulated in a threaded seat cover way, and is changed from 0 to infinite to simulate a plurality of linear or nonlinear dynamic characteristics. The water tanks are provided with measurement transmitters respectively, a field indication rotor flow meter, a throttling hole plate, a control valve and a circulation water pump are arranged in four paths of water inlet pipelines respectively, and a pressure meter is arranged at an outlet of the water pump. The device can be used for a process control simulation experiment in flow processes of large chemical production devices, equipment and machines, fluid production devices, equipment and machines and the like, and is applied to the automatic teaching and scientific researches of colleges, scientific research institutions, training institutions, factories and the like as well as teaching.

The invention discloses a single-tube air cannon capable of achieving continuous launching. The single-tube air cannon comprises a launching tube, a pellet feeding device 2, an electric servo actuator3 for pellet feeding, an experimental control system 4, an electric servo actuator 5 for launching/air supplement, a launching air chamber 6, a combination valve body 7 and an air supplement chamber8, wherein the launching tube 1 is connected with the pellet feeding device 2, and a plurality of pellets can be prearranged in the pellet feeding device 2; one pellet is pushed by the electric servoactuator 3 for pellet feeding to enter the launching tube; the launching tube 1 is connected with the launching air chamber 6, and the launching air chamber is of a rotator type stepped cylindrical structure, and, and is composed a large chamber at the right end and a small chamber at the left end; and the launching air chamber 6 is connected with the small chamber of the air supplement chamber 8through an air path. According to the technical scheme, the test requirements of aircraft structures, high speed trains, wind turbine blades and other high speed running machines for continuous impactby foreign objects can be met, and meanwhile the launching interval or frequency can be set through control over the regulation of parameters.

The invention discloses a streptococcus mutans AMC metabolic recovery strain based on LuxS defect, wherein AMC metabolic recovery strain is StreptococcusmutansKO-SUA159:: delta luxS, pIB-sahH and has a preservation number of CCTCCM2013699. The LuxS-mediated metabolism is separated from density induction by heterologous expression of SahH in a Streptococcus mutans stain with LuxS defect, the obstacles to research on the LuxS mechanism, caused by dual-defect effect of the deletion of LuxS, is effectively overcome, and an effective molecular biology tool and experimental control are provided for the discuss about the regulation mechanism of Streptococcus mutans LuxS.

The invention relates to an experimental control method for evaluating service life of transformer oil, which mainly resolves the problems that in the prior art, only sample temperature and oxygen flow can be controlled, practical application environment of the transformer oil can not be simulated really, and fault protection can not be achieved. A temperature sensor is adopted to sample experimental temperature of the transformer oil, a gas quality flow sensor is adopted to sample oxygen flow supplied into the transformer oil, a voltage transducer is adopted to sample working voltage of a transformer, and a high voltage transducer is adopted to sample experimental high voltage. Sampled temperature, oxygen flow, working voltage of the transformer and experimental voltage information are inputted into a computer. The computer is communicated with a temperature control digital instrument, a gas quantity flow meter, an alternating current voltage stabilizer and an experimental high voltage instrument, thereby achieving the aims of automatic control and fault protection of temperature oxygen flow, working voltage of the transformer and experimental high voltage. The experimental control method for evaluating service life of transformer oil can be applied to evaluation experiments of service life of the transformer oil.

The invention relates to a preparation method of NHS immunomagnetic beads modified with an NHS group, in particular to a preparation method and an application of NHS immunomagnetic beads for capturingvibrio parahaemolyticus. According to the method, a magnetic fluid is used as a carrier and coupled with a vibrio parahaemolyticus antibody, and the vibrio parahaemolyticus immunomagnetic beads capable of enriching a target strain is prepared. With adoption of the preparation method of the NHS immunomagnetic beads, the time is shortened from 26 h in a traditional preparation process to 2-3 h, andthe preparation efficiency is improved; experimental control shows that compared with the traditionally prepared vibrio parahaemolyticus immunomagnetic beads, accuracy rate of enriched target flora is increased by 6.7 %; sensitivity of the vibrio parahaemolyticus immunomagnetic beads is improved, and by means of the characteristics that the vibrio parahaemolyticus immunomagnetic beads are quick,convenient and cheap and a large detection instrument is needless, the immunomagnetic beads can be applied to separation and enrichment of the vibrio parahaemolyticus in food, feed, medical environment and natural environment, and the vibrio parahaemolyticus can be detected efficiently and rapidly.

The invention discloses a three-phase change flow experiment control device and an experiment control method thereof, the experiment control device comprises a three-phase isolation unit, three-phaseprotection unit, Electrical Signal Sampling Protection Unit, three-phase drive unit, Central control unit, electrical signal sampling unit, capacitance filter unit, a man-machine interaction unit anda DC load unit, one end of the three-phase isolation unit is connected to the three-phase power grid side, the other end of the three-phase isolation unit is connected with the three-phase drive unitthrough an AC relay switch and a bus bar, the three-phase driving unit is connected with a capacitive filter unit. The capacitive filter unit is connected with the DC load unit through a DC relay switch and a bus bar, and the inputs of the electric signal sampling unit are respectively connected with the bus bar between the three-phase isolation unit and the three-phase driving unit and the bus bar between the capacitive filter unit and the DC load unit, and the inputs of the electric signal sampling unit are connected with the bus bar between the three-phase isolation unit and the three-phasedriving unit. The invention can simultaneously collect three-phase alternating current voltage and direct current voltage, and realizes mutual conversion between three-phase alternating current and direct current.

The invention discloses a method for generating experimental information, comprising: establishing an editing page of experimental information; obtaining controls set by users on the editing page; adding experimental information to the control, and storing the experimental information in In the database; generating an experiment information file on the editing page provided with the experiment information; publishing the experiment information file on the network. In the solution provided by the present invention, by setting the experimental information on the editing page in the form of controls, and then generating the experimental information file on the editing page with the experimental information, students can directly edit the experimental information on the computer during the experiment. View the experiment information file on the network, so it is very convenient for students to view the experiment information during the experiment process; moreover, because it is very easy for students to view the experiment information during the experiment process, the efficiency of the experiment can be improved.