61results about How to "Control Precise Control" patented technology

The invention discloses a method and system for intelligently controlling temperature of concretes of a dam under construction. The system comprises a control device which communicates with a heat exchanging device and a heat exchanging auxiliary device, wherein the heat exchanging device is arranged at inner part or surface of the concrete dam, and is used for exchanging heat with the concrete dam and transmitting collected temperature information of the concrete dam to the control device; the heat exchanging auxiliary device inputs a heat exchanging medium to the heat exchanging device and outputs the medium from the heat exchanging device after the heat exchange; the control device is used for controlling the heat exchanging auxiliary device; and the control device can input a temperature control strategy of each casting bin. By the system and method disclosed by the invention, the temperature of the concrete dam can be detected in real time automatically, individualized temperature control strategies are provided to different casting bins, intelligent learning is performed according to actual conditions on site, and concrete thermal parameters which are the most accurate and realistic are selected for each casting bin, so that the precise control on water flow capacity and/or temperature can be realized, the precision for controlling the concrete dam temperature is high, the data is reliable, labour and water costs can be greatly reduced, and the anti-cracking effect of the dam is good.

The invention discloses a composite configuration amphibious robot based on epicyclic gear trains and provided with wheel paddle legs. The robot comprises a machine frame, wheel paddle leg devices, a transmission system, a driving system and a control system, wherein the four independent wheel paddle leg devices are symmetrically arranged on two sides of the machine frame, the driving system is connected with the wheel paddle leg devices through the transmission system, each wheel paddle leg device comprises an epicyclic gear train, a paddle leg device and an outer wheel, the driving system comprises three independent driving motors, all the driving motors are connected with the control system and the rotary speed of the driving motors is controlled by the control system. A synchronous belt drive mode is adopted in the robot, and the robot has various gait motion modes and is suitable for various complex road condition environments.

The invention relates to a laser cleaning device, in particular to a large-format laser cleaning device, and belongs to the technical field of laser cleaning. A moving device is mounted; through the direction change of wheel brackets of the moving device, wheels can be placed on the ground or withdrawn, so that the whole laser cleaning device is convenient to move and fix; a controller respectively controls extension of extension rods of four electric cylinders to drive four laser cleaning machines to move up and down to adjust the distance from each laser cleaning machine to the surfaces of objects to be cleaned in real time, so that the objects can be always maintained in an optimal cleaning distance state for cleaning, uneven surfaces can be maintained in a more ideal cleaning effect, and the laser cleaning device can be suitable for metal workpieces with uneven surfaces; and the widths of optical fibers output by one laser cleaning machine are just in butt joint with the widths ofoptical fibers output by the adjacent laser cleaning machines, so that the four laser cleaning machines arranged side by side can be suitable for large-area cleaning of the uneven surfaces of the objects to be cleaned.

The invention relates to the technical field of preparation of new materials, in particular to a germanium single crystal growth furnace and a germanium single crystal growth temperature control method based on the growth furnace. The germanium single crystal growth furnace is fixed on a base vertically and is characterized in that the growth furnace adopts a cylindrical stainless steel furnace body; several heating electrodes are arranged on the side wall of the furnace body from bottom to top; annular thermal insulation materials are arranged inside the furnace body; a support system is arranged at the bottom of a central shaft of the furnace body; a special-shaped quartz tube is erected on the support system; a lower crucible, a middle ring, an upper crucible and a sealing cap are sequentially arranged in the special-shaped quartz tube from bottom to top; quartz wool covers the special-shaped quartz tube. The growth furnace specific to the growth characteristics of 8-inch germanium single crystals is exquisite in structure and reasonable in design of temperature area.

The invention discloses an intelligent network-connected automobile simulation test system based on whole automobile hardware-in-loop, and relates to the technical field of intelligent automobile automatic driving. The system comprises a hub dynamometer, a vehicle dynamics simulation module, a hub dynamometer control module, a sensor simulation module, a visual simulation system and a positioningsimulation module, wherein the hub dynamometer is independently mounted on wheels of a tested whole automobile; the vehicle dynamics simulation module mainly comprises an inertial navigation simulation module and a road load simulation module; the hub dynamometer control module is used for receiving parameters from the vehicle dynamics simulation module; the sensor simulation module is used for simulating the environment around the tested vehicle; the visual simulation system is connected with the output signal of the sensor simulation module and is used for simulating the visual angle of a driver; and the positioning simulation module is used for simulating the position of the vehicle in a high-precision map. According to the system, a large number of different environmental conditions can be simulated without being constrained by external conditions, compared with an actual road experiment, a large amount of time and manpower and a large number of financial resources can be saved, the safety is higher than that of the road experiment, and the test performance is greatly improved.

The invention discloses an electromagnetic pump especially a source-free direct current electromagnetic pump, which is characterized by the following: setting pump body (2) as L shape structure; arranging negative pole at L angle position of the pump body (2); arranging magnetic conduction plate (4) on the two laterals of the L angle in the pump body (2); connecting the two magnetic conduction plates to N pole and S pole of electromagnet (6) separately; constructing the negative pole 5 and the magnetic conduction plate (4) as component of pump groove; nesting energizing coil (8) on the electromagnet (6); connecting the negative (5) and the energizing coil (8) to site control pod. This invention possesses simple structure, liable work and small volume.

The invention relates to an automatic control system for a hydraulic pumping station, which belongs to the technical field of an automatic control system for the hydraulic pumping station. The automatic control system for the hydraulic pumping station comprises a programmable controller PLC, a frequency converter which is connected to the front end of a hydraulic motor which drives a motion mechanism to move, and a pressure sensor which is arranged on an oil pipe, wherein the frequency converter and the pressure sensor are electrically connected with the programmable controller PLC respectively, and various controls are realized through programs of the programmable controller PLC. The automatic control system for the hydraulic pumping station has the advantages that a signal is transmitted to the PLC by the pressure sensor, and the working frequency of the frequency converter and the motor is controlled in real time by the PLC control program; the working pressure of dynamic oil of the hydraulic pumping station can be automatically and precisely controlled; a touch screen which is used as a man-computer interactive interface can be connected to the PLC, and the working pressure can be conveniently set on the touch screen; and the operation is simple and convenient, and the control precision is within 3 percent. The automatic control system for the hydraulic pumping station is not only suitable for various hydraulic machines of which main frames and hydraulic devices are detachable but also suitable for various hydraulic machines of which the main frames and the hydraulic devices are integrated into a whole.

The invention discloses an optical fiber sensor packaging process prestress automatic control device and method. The device comprises a control module, a displacement module, a tension meter, a fine adjustment module, an optical fiber winding wheel and a base; the fine adjustment module is used for supporting an optical fiber sensor packaging structure, and the height of the fine adjustment module can be adjusted, so that an optical fiber is not subjected to external force in a vertical direction; one end of an optical fiber sensor tail fiber is wound and fixed on the optical fiber winding wheel, and the other end of the optical fiber sensor tail fiber is fixed on a tension meter connecting rod; the tension meter is installed on the displacement module through a supporting piece, moves in the direction of stretching or loosening the optical fiber along with the displacement module, sends a tension value to the control module in real time; and the control module compares the real-time tension value with a preset tension value to make a decision to control the displacement of the tension meter. According to the optical fiber sensor packaging process prestress automatic control device, closed-loop control can be performed on the prestress of an optical fiber sensor according to a preset value; the control device is simple in structure and high in control precision, can be copied, and can easily realize batch packaging of optical fiber sensors.

The invention relates to an asphalt pavement friction coefficient tester capable of simulating rainfall and a testing method of the asphalt pavement friction coefficient tester. The asphalt pavement friction coefficient tester comprises a rain box which is divided into a main equipment region and an auxiliary equipment region; the main equipment region is separated into an upper part and a lower part through a rain collection bottom plate and the lower part is a water collection box; a water distribution pipe with a nozzle is arranged at the top of a right part of the upper part; two clamping strips are arranged at the bottom of the right part of the upper part; a test mold is arranged between the two clamping strips; a portable pendulum tester is arranged on an upper surface of the test mold; a water storage bucket is arranged at the bottom of the left part; the bottom of the water storage bucket is connected to a water pump in the water collection box through a water inlet pipe; a water pump is arranged at the top of the water storage bucket and the water pump is connected to the water distribution pipe through a water conveying pipeline; the water conveying pipeline is further upwards provided with a tee joint, a flow meter and a solenoid valve in sequence; the tee joint is connected with a water returning pipe which is provided with an adjusting valve and is connected to the water storage bucket; the auxiliary equipment region is provided with a control box. The asphalt pavement friction coefficient tester has the characteristics of simple structure and simplicity and convenience for operation.

The invention discloses a simulation wheel-grind forming machine for bitumen mixture specimens and a specimen manufacture method. The simulation wheel-grind forming machine comprises a grind wheel, a grind wheel driving device, a grind inflating device and a control box. The grind wheel comprises a rim, a retainer ring and a tyre. The outer edge of the rim is provided with the retainer ring. The tyre encircles the outer edge of the rim through the retainer ring. The grind wheel driving device comprises a retarding mechanism, a rack, a hydraulic dowel bar, a hydraulic cylinder, a guide rail and a transmission chain. The retarding mechanism is in power connection with the transmission chain. The top of the hydraulic dowel bar is cooperatively and slidingly installed on a guide rail of the control box. The hydraulic dowel bar is cooperatively provided with the hydraulic cylinder. The hydraulic dowel bar has a telescopic motion bar. The bottom of the hydraulic dowel bar is hinged to the rack. The center of the top of the grind wheel's rim is fixedly connected to the bottom of the rack. The top of the rim is provided with the grind wheel inflating device for inflating the tyre. The simulation wheel-grind forming machine has a simple structure, is reasonably designed and is easy and simple to install, use and operate.

The invention discloses a car following control method based on a brain emotion learning loop model and a control system thereof. The car following control method comprises the steps of designing a safety distance between a vehicle and a front vehicle; designing a distance error according to the safety distance; outputting an expected acceleration of the vehicle according to the distance error anda relative speed of the vehicle and the front vehicle; and designing an emotion controller based on the brain emotion learning loop model according to the expected acceleration of the vehicle, and finally taking the output of the emotion controller as an unified accelerator pedal opening degree of the vehicle to finally complete car following control. The method better conforms to a decision behavior of a driver, has advantages of a high adaptive capacity and a high response speed, and can realize accurate control of the speed.

The invention belongs to the technical field of medical instruments and particularly provides a vein infusion tube capable of automatically controlling the dripping speed. The vein infusion tube comprises an infusion tube body, an infusion tube conduit and a manual roller device, wherein the manual roller device sleeves the infusion tube conduit and comprises a roller bracket and a roller which is mounted between the left side wall and the right side wall inside the roller bracket; a micro remote control motor as well as a control processing module and a power supply for controlling the micro remote control motor to rotate forwardly and reversely are mounted on the right side wall of the roller bracket; the power supply is connected with each of the micro remote control motor and the control processing module; the rotating shaft of the micro remote control motor is connected with the shaft of the roller. Matched handheld equipment is adopted to emit an instruction to the control processing module, and through processing of the control processing module and the control on the motor, a transmission device is controlled, the moving amount of the manual roller is controlled, the infusion dripping speed is precisely controlled, and the problem in the prior art that the infusion dripping speed cannot be precisely controlled by operators is solved.

The invention provides an elevation-adjustable superflat floor formwork, which comprises a square steel guide rail, square steel butt joint sleeves, a plurality of pieces of angle steel, a plurality of oppositely penetrating fastening screw bolts and a plurality of expansion screw bolts, wherein the square steel guide rail consists of two pieces of parallel square steel with the space being 2 to 3m; holes are drilled in the length direction at intervals being 1 to 2m and are used for fixing the oppositely penetrating fastening screw bolts; the square steel joint parts of the square steel butt joint sleeves are connected by internally connected sleeves; the length of the butt joint sleeves is 100 to 200mm; the two ends of the butt joint sleeves are embedded into the square steel guide rail for 50 to 100mm; a plurality of pieces of angle steel are used as connecting elements between the square steel guide rail and a structure base layer; the length of the angle steel is 80 to 100mm; a plurality of opposite passing fastening screw bolts are used as connecting fastening screw bolts between the square steel guide rail and the angle steel; the plurality of expansion screw bolts are in one-to-one correspondence to oval holes formed in the angle steel; and each piece of angle steel is anchored on a superflat floor structure base layer by two expansion screw bolts. The elevation-adjustable superflat floor formwork effectively solves the problem that the existing construction technology cannot meet the precision requirement of the superflat floor construction.

The invention relates to a rainfall simulation rotary bituminous pavement friction coefficient tester and a testing method thereof. The rainfall simulation rotary bituminous pavement friction coefficient tester comprises a rain box divided into a main equipment area and an auxiliary equipment area, wherein the main equipment area is divided into an upper part and a lower part by a rain collection baseplate, and a water collection box is arranged at the lower part; a water distributing pipe with nozzles is arranged at the top of the right part of the upper part; two clamp strips are arranged at the bottom of the right part of the upper part, and a test mold is placed between the two clamp strips; a dynamic rotary friction coefficient tester is arranged on the upper surface of the test mold; a water storage bucket is arranged at the bottom of the left part, and the bottom of the water storage bucket is connected to a water pump in the water collection box through a water inlet pipe; another water pump is arranged at the top of the water storage bucket and connected with the water distributing pipe through a water delivery pipeline; a tee joint, a flowmeter and a solenoid valve are sequentially arranged on the water delivery pipeline from bottom to top; the tee joint is connected with a water return pipe with an adjustment valve, and the water return pipe is connected to the water storage bucket; a control box is arranged in the auxiliary equipment area. The rainfall simulation rotary bituminous pavement friction coefficient tester is simple in structure, and simple and convenient to operate.

The invention relates to the technical field of optical cable manufacturing equipment, in particular to visual automatic cable twisting equipment. A driving device is mounted on a support, two ends of a rotating base are mounted on the support through rotating shafts, the driving device drives the rotating base to rotate along the rotating shafts, a cable clamping assembly is mounted on the rotating base, a photographing box is arranged on the support, concave-surface rollers for supporting cables are arranged at square holes, a camera and an annular light source are arranged in the photographing box, the annular light source is located on the inner side of the square hole of the photographing box, the camera is electrically connected to an intelligent terminal, the intelligent terminal is electrically connected to a controller and the annular light source, and the intelligent terminal is electrically connected to the driving device through the controller. The equipment has the beneficial effects that the workload of operators is reduced, the quality of optical cables is ensured, the equipment judges the cross section directions of the optical cables (non-circular optical cables) of special structures or the positions of color bars of color-bar optical cables through the industrial camera and the visual system, the torsion angle pulse amount is calculated, and a synchronous motor is controlled to drive the cable twisting equipment, so that the torsion angles of the cross sections of the optical cables can be controlled according to the position of an ink-jet printer, and the positions of the marks on the optical cables are accurately controlled.