33results about How to "Accuracy conforms to" patented technology

The invention discloses a method for calculating the real-time conductor temperature of a three-core cable. The method comprises the following steps of: (1) simplifying a complete transient-state thermal circuit model of the three-core cable into the simplest transient-state thermal circuit model only containing an equivalent thermal capacitance and an equivalent thermal resistance; (2) only considering current changes and skin temperature changes to obtain the relationship among the temperature of a conductor, a load current and a skin temperature, thus obtaining the temperature rise of the conductor caused by only considering current changes and skin temperature changes due to analogy on a first-order circuit transient response; (3) calculating the generated steady-state temperature rise and a temperature rise caused by medium losses according to a current at an initial time; (4) calculating a temperature rise caused by n times of currents and skin temperature changes in two hours (a cable thermal time constant) from the initial time; (5) summating the skin temperature at the initial time and all the temperature rises above to obtain the conductor temperature of the three-core cable currently.

Provided are systems and methods using a Soleil-Babinet compensator (101) as a standard for calibrating birefringence measurement systems. Highly precise and repeatable calibration is accomplished by the method described here because, among other things, the inventive method accounts for variations of retardance across the surface of the Soleil-Babinet compensator (101). The calibration technique described here may be employed in birefringence measurement systems that have a variety of optical setups for measuring a range of retardation levels and at various frequencies of light sources.

The invention discloses a honing machine detecting system which comprises a two-dimension (2D) laser scanner, a sliding system and an image processing system. The 2D laser scanner is used for transmitting laser to a guide rail and obtaining an appearance light section curve of the guide rail. The sliding system is connected with the 2D laser scanner and used for fixing and moving the 2D laser scanner. The image processing system is connected with the 2D laser scanner and used for analyzing the light section curve. The 2D laser scanner is utilized to quickly detect a large-scale horizontal type honing machine in a high-efficiency mode, a light section line image is transmitted to a digital signal processor (DSP) processing circuit by a charge-coupled device (CCD) camera, so that all parameters to be measures of each section of guide rail are obtained and compared with specified parameters of the guide rail of the honing machine to confirm whether the honing machine meets machining requirement or not, well solve the problem that accuracy of the honing machine is reduced, and conform to the requirements for being high in machining manufacturing accuracy and high in speed of modern industry. In addition, the honing machine detecting system is simple in structure, low in manufacturing cost, and obvious in practical effect, and has good application value.

Methods and systems are disclosed that may be employed to enable multi-phase voltage regulator (VR) system calibration during the development phase of a multi-phase VR system so as to meet defined accuracy targets and, in one example, to avoid the need for system level calibration in a production environment. The disclosed systems and methods may be further implemented to enable use of multiple sources for and types of integrated power stages (IPstages) in a common multi-phase VR system configuration while still achieving the required current sense accuracy, thus reducing or substantially eliminating continuity of supply (COS) concerns. The disclosed methods and systems may also be implemented to improve accuracy of current sense in a manner that improves VR system performance, power saving and reliability.

The invention discloses a sewage treatment process fault monitoring method based on fuzzy width adaptive learning model. Including “offline modeling” and “online monitoring” two stages. “Offline modeling” first uses a batch of normal data and 4 batches of fault data as training samples to train the network offline and label the data. After the network training is completed, the weight parameters are obtained for online monitoring. “Online monitoring” includes: using newly collected data as test data, using the same steps as offline training networks for online monitoring. The output result of online monitoring adopts one-hot encoding to realize zero-one discrimination of the output result of online monitoring, so as to realize fault monitoring. The present invention only needs to increase the number of enhanced nodes, reconstruct in an incremental manner, and does not need to retrain the entire network from the beginning. It can complete the network training in a short time and realize the rapid fault monitoring in time, which has high practical application value.

The invention discloses an ultrasonic chromatography flow field imaging method and device. The device is mainly composed of a hardware system and a corresponding software module. The hardware system mainly comprises a ZigBee control transmission node, a ZigBee data acquisition node, a temperature and humidity sensor, a displacement precision sensor, an adaptive three-axis mounting rack, a solar panel, a matched lithium battery and an upper computer. The software module of the system is divided into two parts, one part is software corresponding to an upper computer, and the other part is a program embedded into a ZigBee node. The system can completely meet the requirement for precise monitoring of U-shaped channel deformation, is flexible and diverse in interface, is rich and standard in external expansion, can carry various types of sensors, can build a wireless network by itself, has a network fault self-repairing capability, and achieves information exchange with a remote control center and system control through the mobile internet; and meanwhile, a solar cell is carried according to the used external environment, an embedded system is developed by utilizing a single chip microcomputer to realize an energy supply management distribution strategy, and self-sufficiency of energy supply is realized.

The invention discloses a special-shaped hole machining device used for machining special-shaped holes in a conical sheet metal part. The special-shaped hole machining device comprises an electrode mechanism and a clamping mechanism, the electrode mechanism comprises an electrode positioning seat which is provided with a plurality of electrode positioning holes corresponding to the special-shaped holes, electrodes are arranged in the electrode positioning holes, and a connecting rod is arranged on the spindle of the electrode positioning seat; the clamping mechanism comprises a tire body and an annular pressure plate, a plurality of mutually-matched screw holes are arranged in the tire body and the annular pressure plate, the conical metal part is arranged between the tire body and the annular pressure plate, and the tire body, the conical metal part and the annular pressure plate are fixedly connected through bolts. The invention further discloses a special-shaped hole machining method utilizing the special-shaped hole machining device to have the special-shaped holes in the conical metal part machined. By the special-shaped hole machining device and the special-shaped hole machining method, operation is facilitated, accuracy requirements on shape and position of the special-shaped holes in the part are guaranteed, machining cost is lowered, and production efficiency is improved.

The invention relates to a linear approximation anomaly lower limit determination method, which is based on a rule that a test data background part obeys normal distribution and linear distribution must obey high normal distribution. The method comprises the following steps of writing an algorithm model to accurately separate a background part in the test digital set by using a statistical linearfitting successive approximation method through repetition (iteration) by means of a computer; wherein the upper limit and the lower limit of the separated background part are respectively the lower limit value of the positive anomaly and the upper limit value of the negative anomaly of the digital set, and the anomaly lower limit can be quickly, simply and accurately determined by the method.

The invention relates to a car frame front tube shaping device, which comprises a base, a car frame positioning assembly and a car frame front tube shaping assembly, wherein the car frame positioningassembly and the car frame front tube shaping assembly are arranged on the base. The car frame front tube shaping assembly comprises an integral deviation correction mechanism, a front tube torsion deviation correction mechanism and a front tube correction detection mechanism, the integral deviation correction mechanism comprises a first servo electric cylinder, a front tube shaping layer board, aguide rail, a torsion deviation plate, a torsion deviation base and a torsion deviation plate locking oil cylinder, the guide rail and the torsion deviation base are both arranged on the base, the front tube shaping layer board is slidably matched with the guide rail, a top rod of the first servo electric cylinder is fixedly connected with the front tube shaping layer board, the torsion deviationplate is rotatably connected with the torsion deviation base through a bearing, a locking hole is formed in the torsion deviation plate, the torsion deviation plate locking oil cylinder is installedon the torsion deviation base and driven, and a piston rod of the torsion deviation plate locking oil cylinder can be inserted in or detached from the locking hole of the torsion deviation plate. According to the car frame front tube shaping device, closed-loop correction can be formed, thus correction accuracy is high, and the correction efficiency is also high.

The invention relates to health care ice grape beer brewed by functional water and a preparation method, wherein the beer comprises the following components of raw materials by weight percent: 5-8 of malt, 2-3 of hop, 1-5 of honey, 1-2 of yeast, 15-30 of ice grape juice and the balance of water; wherein the water is active functional water. Compare with the prior art, the novel beer brewed by the active functional water and ice grape has fragrant smell, can effectively improve oxygen content of blood of the human body, activates brain tissue and cells, activates bioelectric current, improves microcirculation of the human body, improves immunity of the human body, is beneficial for the human body to absorb nutrient constituents, trace elements and rare elements, effectively complements the trace elements and beneficial rare elements which are lack in the human body, have good function of health care, meets the requirements of modern people on health care beer with low alcoholic strength, environmental protection and organism, and has a huge market potential and wide market prospect.

The invention discloses an online mounting method for bearing seats of a wrapper roller frame of a hot rolling coiler. The online mounting method comprises the steps that firstly, new bearing seats are manufactured, and process positioning holes are machined at the center positions of original bearing seats at an operation side memorial archway and a transmission side memorial archway to serve aspositioning datum of mounting of the new bearing seats; the old bearing seats are demounted, process false shafts are manufactured and mounted in the process positioning holes, and the new bearing seats are mounted on the process false shafts and welded to the operation side memorial archway and the transmission side memorial archway; the process false shafts are demounted, tool brackets are welded to the inner sides and the outer sides of the transmission side memorial archway and the operation side memorial archway, boring rods of machining equipment penetrate into the tool brackets and theprocess positioning holes, and the positions of the boring rods are locked; and inner holes of the new bearing seats are machined through the machining equipment to reach the designed size, the concentricity of the bearing seats on the two sides is ensured, after machining, the machining equipment and the tool brackets are demounted, the sizes of the centers of the bearing seats are retested to meet the design precision requirements, and mounting of the new bearing seats is completed. According to the online mounting method, the structural transformation demands of the coiler are met, and theposition precision of a wrapper roller is ensured.

The invention discloses a cylindrical lens supporting device and optical equipment, the cylindrical lens supporting device comprises a supporting frame and a pressing assembly, the supporting frame is provided with an opening for light to pass through and a mounting hole for accommodating a cylindrical lens, the opening is communicated with the mounting hole, and the supporting frame is provided with a flexible table and three supporting tables which are all located in the mounting hole. The flexible table and the multiple supporting tables support the cylindrical lens, the multiple supporting tables define a supporting structure, the hole wall of the mounting hole abuts against the side wall of the cylindrical lens, the pressing assembly comprises flexible pressing blocks and multiple pressing blocks which are connected with the supporting frame, the number of the pressing blocks is consistent with that of the supporting tables, and the pressing blocks and the supporting tables are in one-to-one correspondence; the pressing blocks are used for pressing the cylindrical lenses on the corresponding supporting tables, and the flexible pressing blocks press the cylindrical lenses on the flexible tables. According to the supporting device, the cylindrical lens is pressed on the multiple supporting tables through the multiple pressing blocks, and the cylindrical lens is pressed on the flexible table through the flexible pressing blocks, so that multi-point press fitting is achieved, and the influence on the surface shape precision of the cylindrical lens is avoided.

The invention relates to an accelerator radiant matter measurement method. The measurement method comprises the steps of disposing an ionization chamber in a water tank, wherein the axial direction ofthe ionization chamber is perpendicular to the bottom face of the water tank; adjusting the angle of a machine head of an accelerator, so that the direction of ray beams emitted by the accelerator isperpendicular to the axial direction of the ionization chamber; turning on the accelerator and a water tank system controller, and controlling the ionization chamber or the water tank to move from afirst position to a second position in the direction of the ray beams through the water tank system controller; measuring the percent depth dose PDDx and the percent depth dose PDDy of the ray beams corresponding to the first position and the second position in the water tank through a dosimeter, wherein x and y are thicknesses of water molds corresponding to the first position and the second position respectively; changing a dose rate value of the accelerator or changing a set dose MU for performing multiple groups of tests to obtain multiple groups of PDDx and PDDy; performing calculation according to PDDx and PDDy to obtain multiple groups of radiant matter indexes, wherein the radiant indexes are tissue phantom ratios TPRx and TPRy.