30results about How to "Eliminate error factors" patented technology

The invention provides a system for measuring the electric quantity of lithium ion batteries. The system is used for on-line dynamic measurement and correction of the electric quantity of the lithium ion batteries at work to reduce measuring errors. The system for measuring the electric quantity of the lithium ion batteries is characterized by comprising a voltage and current acquisition module, a temperature acquisition module, a processing module, a display module and a voltage stabilizing circuit. The voltage and current acquisition module is used for acquiring terminal voltage and main line current data of N storage battery sets at the same time point and transmitting the terminal voltage and main line current data to the processing module; the processing module conducts least squares fit on the terminal voltage and main line current data, a U-I curve is obtained, and the electromotive force epsilon and the internal resistance r of the lithium ion batteries are obtained through calculation; internal temperature data of the lithium ion batteries are acquired at regular time; the state of charge of the lithium ion batteries is obtained in a partition linear processing mode according to the electromotive force epsilon of the lithium ion batteries; burn-in correction and temperature correction are conducted on the state of charge respectively in a partition linear processing mode according to the internal resistance r and internal temperature T of the lithium ion batteries, and therefore real-time data of the electric quantity of the lithium ion batteries at the time point are obtained.

The invention discloses a machining center machine tool and machining method specially for a horizontal type bolted sphere. The machining center machine tool and machining method specially for the horizontal type bolted sphere comprises a cross side way, a horizontal sliding table, a longitudinal sliding table, a base, and a horizontal type circular tool magazine; and the cross side way is arranged on the plane of the base and is provided with the horizontal sliding table, the longitudinal sliding table is arranged on the upper end of the horizontal sliding table, the horizontal type circulartool magazine is arranged at one end of the longitudinal sliding table and is characterized by comprising a four-axis feed system and a tool changing system, and the four-axis feed system comprises aturntable system, a horizontal sliding table, and a longitudinal sliding table. The main design is the sphere center of the bolted sphere being a machining benchmark, without or reducing fixture changing, each of error factors caused by an unfixed sphere center is eliminated, machining accuracy is enhanced significantly, the sensibility of an initial position during machining is reduced, force isuniform and reliable, and rigid maintenance performance is good; and the sphere center of the bolted sphere is a reliable functional unit for design and modifying of a horizontal type machine tool ofthe bolted sphere.

Waveform monitor apparatus of injection molding machine. When a waveform monitor apparatus (1) of an injection molding machine (M) for monitoring an operation waveform at least during molding is configured by mounting the waveform monitor apparatus (1) on the injection molding machine (M) for performing molding according to a specific molding system, a parting opening detecting means (Fp) for detecting change data of a parting opening (Lm) to a time during molding, and an operation waveform displaying means (Fd) for displaying at least change data from a resin filling start (ts) is into a mold (2) to a cooling time termination (te) to of the mold (2), detected by the parting opening detecting means (Fp), on a waveform displaying portion (5) of a screen (4v) on a display (4) attached to a molding machine controller (3) are provided.

A method for track position improvement by means of a track-movable track-tamping machine (6) with a three-point working measurement system, which has three measurement carriages (A, B, C), a cord (9)stretched therebetween, a tamping unit (5), a lifting / straightening assembly (8) for tracks and an odometer particularly. The position of the track after the correction work of the track-tamping machine (6) is recorded by the measurement system, wherein a computer (R) calculates the difference between a predetermined desired track position (1) and an actual position recorded by the measurement system, that is to say a residual error (Kh), and the position of the rear cord end at the rear measurement carriage (C) of the track-tamping machine (6) of the three-point working measurement system iscontinuously corrected in such a way that the rear cord end at the measurement carriage (C) is guided on the desired track position (1).

The invention discloses a construction method of a large-diameter thick-wall continuous Y-shaped steel pipe column. The method comprises the following steps: establishing a BIM model of the continuousY-shaped steel pipe column, and decomposing the continuous Y-shaped steel pipe column into n embedded pipe sections, n Y-shaped column sections, 2n inclined column sections and n-1 inverted V-shapedcolumn sections from bottom to top; blanking to manufacture each section; pre-assembling the whole body; performing quality inspection on the pre-assembly; coating, numbering and packaging all the sections, and transporting the sections to an installation site; assembling each embedded pipe section and the corresponding Y-shaped column section into a lower part on site, and assembling the two inclined column sections and the corresponding inverted V-shaped column sections into an upper part; hoisting all lower parts; hoisting an upper part; then sequentially hoisting another upper part adjacent to the previous upper part to finish hoisting of all the upper parts; and performing welding. The construction method is high in machining quality and convenient to transport, the installation angleof the inclined column can be adjusted, the construction period is short, and the construction efficiency is high.

The invention discloses a GPS-based water depth synchronization method. The method comprises the following steps of step S1, continuously transmitting a GPS signal to a DSP board by a GPS; and step S2, according to the transmission frequency of the GPS signal, taking a time interval from transmitting the signal by a depth finder to receiving a water depth signal as an estimated value to increase the estimated value before the GPS signal arrives and adjust the transmitted signal of the depth finder, so that the DSP board simultaneously receives the water depth signal and the GPS signal and synchronously sends the water depth signal and the GPS signal to an industrial personal computer. According to the GPS-based water depth synchronization method provided by the invention, the GPS and a water depth measurement technology are combined synchronously, some previous error factors are eliminated, and an increasing role in the future surveying and mapping industry is achieved; and the GPS technology is used for water depth measurement, so that the water depth measurement engineering becomes simple, fast and efficient. Therefore, the GPS and the water depth synchronization technology provide a high-precision, high-quality and high-benefit application prospect for fairway water depth measurement.

The invention discloses a construction method of a large-diameter thick-wall continuous Y-shaped steel pipe column. The construction method is as follows: a BIM model of the continuous Y-shaped steel pipe column is established, and the continuous Y-shaped steel pipe column is decomposed into n prefabricated steel pipe columns from bottom to top. Buried pipe section, n Y-shaped column sections, 2n inclined column sections and n‑1 inverted V-shaped column sections; blanking to make each section; overall pre-assembly; quality inspection of pre-assembly; Coating, numbering, packaging, and transportation to the installation site; each pre-embedded pipe section and the corresponding Y-shaped column section are assembled into the lower part on site, and the two inclined column sections and the corresponding inverted V-shaped column section are assembled into the upper part; Hoist all the lower parts; hoist an upper part; then hoist another upper part adjacent to the previous upper part in turn to complete the hoisting of all upper parts; perform welding. The construction method not only has high processing quality and is convenient for transportation, but also can adjust the installation angle of the inclined column, and has a short construction period and high construction efficiency.

The invention relates to an intelligent temperature-adjusting and voltage-adjusting XLPE (cross-linked polyethylene) cable insulation material performance tester. The tester has the technical characteristics of comprising two cup bodies of which the bottoms are provided with round openings, the bottoms of the two cup bodies are jointly connected back to back in a rotational thread mode, the cup openings and cup covers of the cup bodies are installed together in a thread mode, each cup body is internally filled with a Nacl solution to serve as a conducting medium, the surfaces of the cup bodiesare provided with small holes which are used for enabling two high-voltage electrodes to stretch into the interiors of the two cup bodies, the high-voltage electrodes and a voltage-increasing deviceare mutually connected, the center of each cup cover is provided with a heating device which stretches into a cup body, the heating device is connected with a heating and control device and a batterypower source through a communication unit. The tester is reasonable in design, the error factors caused by different test conditions are eliminated, the voltage-resistant strength of XLPE in differentenvironmental temperature can be accurately tested, the goodness and badness of the insulation performance of an XLPE sample can be more accurately reflected, and the tester can be widely used for testing the insulation performance of the XLPE.

The invention provides a method for measuring the antioxidant content in a lubricating oil by use of linear sweep voltammetry, and belongs to the technical field of electrochemical detection. The method comprises the following steps: adding an ethanol solution of which the antioxidant concentration is known to an electrolyte, measuring by use of the linear sweep voltammetry to obtain the characteristic voltage-current curve of the electrolyte, calculating the characteristic peak area of the curve, establishing a working curve of the antioxidant concentration and the characteristic peak area, extracting new lubricating oil with the known antioxidant content and lubricating oil with unknown antioxidant content by using ethanol, adding the supernatant liquid to the electrolyte, measuring by use of the linear sweep voltammetry to obtain the characteristic voltage-current curve of the electrolyte, calculating the characteristic peak area of the curve, and substituting the characteristic peak area of the known antioxidant into the working curve to obtain the correction coefficient of the lubricating oil of the antioxidant to obtain the unknown antioxidant content. The method is simple, convenient and quick to operate, and high in sensitivity, and can be widely applied to the measurement of the antioxidant content in synthetic oil or mineral oil lubricating oil and the rapid evaluation of the oxidative stability of the lubricating oil.

The invention relates to an intelligent temperature-adjusting and voltage-adjusting XLPE (cross-linked polyethylene) cable insulation material performance tester. The tester has the technical characteristics of comprising two cup bodies of which the bottoms are provided with round openings, the bottoms of the two cup bodies are jointly connected back to back in a rotational thread mode, the cup openings and cup covers of the cup bodies are installed together in a thread mode, each cup body is internally filled with a Nacl solution to serve as a conducting medium, the surfaces of the cup bodiesare provided with small holes which are used for enabling two high-voltage electrodes to stretch into the interiors of the two cup bodies, the high-voltage electrodes and a voltage-increasing deviceare mutually connected, the center of each cup cover is provided with a heating device which stretches into a cup body, the heating device is connected with a heating and control device and a batterypower source through a communication unit. The tester is reasonable in design, the error factors caused by different test conditions are eliminated, the voltage-resistant strength of XLPE in differentenvironmental temperature can be accurately tested, the goodness and badness of the insulation performance of an XLPE sample can be more accurately reflected, and the tester can be widely used for testing the insulation performance of the XLPE.

The invention relates to a detection device and method for deviations in rolls of seamless pipe tandem mill. A lifting hydraulic cylinder and an impelling hydraulic cylinder which are respectively equipped with a displacement sensor and fixed on a detection frame body are connected with a computer through a cable, and are also communicated with a hydraulic pump. A roller and a bearing box are arranged on the detection frame body, the impelling hydraulic cylinder presses the roll ring of the roller onto a slide; the displacement sensor respectively inputs the detected values into the computer for conversion and sorting, then the actual deviations of the top nest work surface of the bearing box from the centre line of the roller is obtained. The lifting hydraulic cylinder makes the pass template to adhere to the pass of the roller, the displacement sensor inputs the detected values into the computer for sorting out, and the actual deviations of the cushion work surface of the bearing box from the pass centre of the roller can be obtained. The invention eliminates various mechanical clearances, excludes any artificial error and removes any hidden danger, improves the measurement accuracy by 2 to 3 times than the artificial measuring way, and the detection time can be shortened by 5 hours.

The invention relates to a material feeding amount control device and method applied to a die cutting machine. Thematerial feeding amount control device comprises a marking mechanism disposed on a feeding platform of the die cutting machine and a mark inspection mechanism located downstream of the marking mechanism. The relative position of the marking mechanism and the mark inspection mechanism can be adjusted, the marking mechanism can mark a film type material, and the mark inspection mechanism detects marks downstream.The control method includes the steps that a, the material is positionedand marked upstream of a die pressing system; b, the marks on the material aredetected upstream of the die pressing system; c, material feeding isstopped when the marks are detected, and then the material is simultaneously punched, position and marked; and d,after punching of the material is completed, the material feeding isstarted again, and then the steps b and c areconducted again until the material is all punched. The marking mechanism and the mark inspection mechanism are used for controlling the feeding amount of the diecutting machine for each die pressing, thereby improving the feeding precision of the diecutting machine.

The invention relates to a micro-interval shaft lever direct connection method which reserves intervals at the connection of the shaft and the lever, thus eliminates the deviation caused by offset and an included angle between a shaft central line and a lever central line, eliminates the deviation caused by shaft radial direction jump and axial direction endplay, eliminates the bad factors brought by assembly location deviation, enables the lever not to shake and not to generate the bad reaction force, and greatly improves the transmission stability and efficiency. It is important to obtain the reserved intervals. Though interference fit of the shaft lever, the farthest end shaking amplitude of the lever is measured after running, namely the shaking maximum diameter is R, the lever length is set as L, alpha is obtained according to tg alpha=R / 2L, the length of the shaft into the lever is set as x, then the reserved interval r of the shaking part is x*sina alpha, the alignment deviation caused by the assembly is set as y, then the minimum interval between the shaft and the lever is x*sina alpha+2y, and normally unpredictable interval z of 0.01-0.05mm is also needed to improve the reliability.

The invention relates to a dust mask effect demonstration machine capable of realizing concentration regulation of different dust particles. The dust mask effect demonstration machine comprises a demonstration cabinet and a dust particle cabinet, wherein a communicating hole matched with the dust particle cabinet is formed in the left side wall of the demonstration cabinet, a dust mask is in fit in the communicating hole and is clamped by a mask clamping mechanism in the demonstration cabinet, a dust particle picking and placing device is arranged at a part, located below the communicating hole, of the dust particle cabinet, a base plate of the dust particle picking and placing device is a ventilation plate, a dust blowing air port is formed in the lower side of the dust particle cabinet,the dust blowing air port is communicated with a dust blowing fan, a concentration regulating air cylinder which is a vertical trend and penetrates the interior of the dust particle cabinet is arranged at the upper part of the dust particle cabinet, and a concentration regulating block in seal fit with the dust particle cabinet is connected below the concentration regulating air cylinder. The dustmask effect demonstration machine provided by the invention has the advantages that the concentration regulating block is controlled to go up and down by virtue of the concentration regulating air cylinder, further volume of a dust particle cavity is regulated, the effect of regulating concentrations of the dust particles is achieved, the condition that quantity of the dust particles is too largeand beyond a blowing range of the fan cannot occur, and then the good and convenient dust particle concentration regulating effect is realized.

The invention discloses an automobile lamp hole site depth detection device, which comprises a load bearing mainboard, a power supply device arranged on the load bearing mainboard, an indicator light and depth detection craft equipment for metal positive and negative electrodes, wherein, the depth detection craft equipment for metal positive and negative electrodes is connected with the indicatorlight through a power supply line and forms a circuit with the power supply device. During the detection, whether the depth of an automobile lamp hole site reaches the requirement is judged through the contact state of the detection craft equipment. The invention is suitable for the detection of various automobile lamp hole sites. The automobile lamp hole site depth detection device has the advantages of simple structure, convenient and quick operation and small measurement error.

The invention discloses an automobile lamp hole site depth detection device, which comprises a load bearing mainboard, a power supply device arranged on the load bearing mainboard, an indicator light and depth detection craft equipment for metal positive and negative electrodes, wherein, the depth detection craft equipment for metal positive and negative electrodes is connected with the indicator light through a power supply line and forms a circuit with the power supply device. During the detection, whether the depth of an automobile lamp hole site reaches the requirement is judged through the contact state of the detection craft equipment. The invention is suitable for the detection of various automobile lamp hole sites. The automobile lamp hole site depth detection device has the advantages of simple structure, convenient and quick operation and small measurement error.

The present invention relates to a mold table positioning method on a prefabricated part production line, comprising the following steps: (1) obtaining the position information of the mold table at station A and sending it to a control processing module; (2) transferring the mold table to station B, Obtain the position information of the mold table at station B and send it to the control processing module; (3) the control processing module calculates and analyzes the relative offset data of the mold table at station B relative to the position at station A; (4) controls The processing module controls the movement of the deviation correction mechanism above station B, and the deviation correction mechanism drives the projection mechanism to move to the designated position. The projection mechanism projects the drawing information produced by the prefabricated part in the form of laser lines onto the mold table at station B. The projected laser The lines correspond to the working positions at station A. The invention can adjust and correct the position information of the mold table correspondingly, realize the high-precision coincidence of the position coordinates of the mold table at different stations, and is beneficial to realize the automation of prefabricated part production.

The invention discloses a water depth synchronization method based on GPS, comprising the following steps: S1, GPS continuously transmits GPS signals to a DSP board; The time interval is used as an estimated value, and the estimated value is increased before the arrival of the GPS signal to adjust the emission signal of the depth sounder, so that the DSP board receives the water depth signal and the GPS signal at the same time, and sends the water depth signal and the GPS signal to the industrial computer synchronously. The present invention combines GPS and water depth measurement technology synchronously, eliminates some error factors that existed before, and will play an increasingly important role in the surveying and mapping industry in the future. Using GPS technology for water depth measurement makes the project of water depth measurement easier , fast and efficient. Therefore, GPS and depth synchronization technology will provide high-precision, high-quality and high-efficiency application prospects for channel bathymetry.

When a waveform monitor apparatus 1 of an injection molding machine M for monitoring an operation waveform at least during molding is configured by mounting the waveform monitor apparatus 1 on the injection molding machine M for performing molding according to a specific molding system, a parting opening detecting means Fp for detecting change data of a parting opening Lm to a time during molding, and an operation waveform displaying means Fd for displaying at least change data from a resin filling start is into a mold 2 to a cooling time termination to of the mold 2, detected by the parting opening detecting means Fp, on a waveform displaying portion 5 of a screen 4v on a display 4 attached to a molding machine controller 3 are provided.