41 results about "Total resistance" patented technology

The invention discloses a method for calculating the opening and closing force of a miter gate based on the stroke acceleration of a hoist. According to the method, relevant parameters of the ship lock miter gate are obtained, the hydrodynamic resistance moment caused by the water level difference during opening and closing operation of the miter gate is calculated through a hydrodynamic resistance moment calculation formula considering the stroke acceleration of a miter gate hoist, then the maximum total resistance moment during opening and closing operation of the miter gate is calculated, and finally the opening and closing force of the miter gate is calculated. According to the calculation method, the dynamic water resistance moment can be calculated by directly using the gate submerging water depth, the gate door leaf width, the water level difference value and the stroke acceleration of the hoist, so that the opening and closing force is calculated, the process of converting the water level difference into the pressure intensity is omitted, and the influence of the stroke acceleration of the hoist is increased; and a more convenient calculation method is provided for estimating whether the maximum opening and closing force for opening and closing the gate exceeds the rated capacity of the hoist or not when the operation mode of the gate of the ship lock is changed.

The invention provides a water leakage point positioning method and device based on resistance gradient calculation, and the method comprises the steps: obtaining a total resistance value and a tail end resistance value of a water leakage induction rope, and reading a preset resistivity parameter per unit length; calculating the distance of a water leakage point based on the total resistance value, the tail end resistance value and the resistivity parameter per unit length; according to the mapping relation between the length of the induction rope and the physical position established in the installation and debugging stage, the distance of the water leakage point is converted into the physical position described by corresponding 3D coordinates or characters; the physical position information is combined with real-time monitoring data to generate alarm prompt information containing a specific water leakage point location, and the alarm prompt information is output to a monitoring interface, so that accurate positioning of the water leakage point can be realized, the fault response time is remarkably shortened, and through a multi-thread data acquisition and dynamic alarm judgment mechanism, the real-time performance and the alarm accuracy of the system are improved; and the false alarm and repeated alarm frequency is reduced.

The application discloses a composite material structure bushing reinforcing method based on electromagnetic loading, which uses electromagnetic loading to complete the bushing reinforcement of the composite material structure, and obvious beneficial effects are obtained compared with traditional methods. The method proposes a process parameter calculation method for the reinforcement process of the structure to solve the problem that existing devices and methods cannot be applied to the bushing reinforcement of the composite material structure. The radial compressive stress around the hole is obtained through the Lame formula and the elastic stress-strain relationship of the composite material, and then the total resistance of dynamic extrusion friction in the reinforcement process is obtained through the Coulomb friction theory, and the process parameters are determined in combination with the mathematical model of the electromagnetic force. The application can realize the calculation of the reinforcement process parameters of the composite material bushing with different structures and sizes, and is used for guiding the reinforcement of the dynamic cold extrusion composite material bushing structure.

The application discloses a memory data reading stability method and device, which comprises the following steps: after determining a reference trimming module, adjusting the equivalent resistance value of the reference trimming module to the optimal resistance value obtained in advance, connecting the second output end of a sensitive amplifier connected with the reference trimming module with a trimming module to be adjusted, and adjusting the trimming module to be adjusted according to the output signal of the sensitive amplifier, so that the total resistance values of each reference circuit and the first trimming module connected with each reference circuit in series are equal, the size of the reading window is increased, the stability of the read data is improved, and the sensitive amplifier in the memory is multiplexed.

A compensation resistor is gated by arranging a compensation circuit switch to be gated in synchronization with the reception of a bit cell, and corresponding resistance compensation is performed on the bit cell which is gated by a total resistance value of a pre-designed compensation resistor array structure, and compensation resistor traces are sequentially connected in series into two metal wires.

The invention discloses a threshold determination and identification method suitable for power semiconductor bonding wire fracture identification. The method comprises the following steps: counting an average value of total resistance of a bonding wire and a power source lead terminal of a brand new power semiconductor; aiming at the conditions that any one bonding wire is broken, any two bonding wires are broken and any three bonding wires are broken, counting the average value and the standard deviation of the total resistance change values of the bonding wires under the three conditions; determining a probability density function of a change rate threshold value of three aging values relative to a reference value based on an average value of total resistance of a bonding wire and a power source lead terminal of the brand new power semiconductor and an average value and a standard deviation of total resistance change values of the bonding wire under three conditions; and three change rate thresholds are determined through a probability density function. According to the invention, the accuracy of the identification criterion can be effectively improved, and the online identification of the fracture condition of the bonding wire can be realized.

The application relates to the technical field of electrochemical sensors, in particular to a coding resistance unit and a biosensor, which comprises: carbon lines and silver lines which are mutually superimposed, and the silver lines divide the carbon lines into two regions; further comprising a laser-engraved pattern which is completely within the range of the carbon lines, the laser-engraved pattern is divided into two parts by the silver lines and corresponds to the two regions of the carbon lines respectively; resistance units corresponding to gears are compiled according to the length and width of the laser-engraved pattern in each region of the carbon lines, the shape of each resistance unit changes with the change of the length and width of the laser-engraved pattern; the resistance units in the same region are connected in series with each other, and the resistance units in different regions are connected in parallel with each other; the resistance values of the resistance units are calculated and summed to obtain a total resistance, and a corresponding coding value is generated based on the total resistance. The application has the effect of generating and identifying the coding identity of as many biosensors as possible through a simple structure.

The present application relates to a hybrid resistance generation system for fitness equipment, the system comprising a set of counterweights providing a first source of resistance and an electromechanical resistance module providing a second source of resistance, the two sources of resistance being connected in series by a counterweight lever such that the resultant total resistance acts on a first cable operably connected to a user interface, the electromechanical resistance module includes an electric motor with a winch for winding and unwinding a second cable that is removably connected to the counterweight lever by a tool-free adapter.

The invention discloses a power supply control method and device for an underwater robot in a hydraulic tunnel, and the method comprises the steps: 1, obtaining the cable release length, the cable surface area and the water density of the underwater robot, and the relative water flow speed of the underwater robot, and calculating the total resistance value of a cable; 2, performing nonlinear exponential gain compensation based on the total resistance value of the cable to obtain a dynamic pressure compensation voltage value; step 3, performing voltage correction operation according to the working current corresponding to the total resistance value of the cable and the total resistance value of the cable to obtain a voltage correction value; 4, accumulating the dynamic voltage compensation voltage value and the voltage correction value to obtain a target voltage output value, and supplying power to the underwater robot according to the target voltage output value; the dynamic change of the underwater environment can be coped with, and the power supply of the underwater robot is adjusted so as to adapt to different working conditions.

The invention is applicable to the technical field of computer-aided zipper design, and particularly relates to a luggage waterproof zipper meshing resistance determination method, which comprises the following steps: acquiring actual test data and a three-dimensional model of a to-be-tested luggage waterproof zipper; based on the three-dimensional model, constructing a simulation model of the waterproof zipper of the luggage to be tested; based on the test time and the test stroke, performing a simulation test on the simulation model to obtain a simulation result; based on the simulation result and the actual test data, carrying out iterative optimization on key parameters of the simulation model to obtain a calibrated simulation model; and based on the test time and the test stroke, performing a simulation test on the calibrated simulation model to obtain the meshing resistance of the waterproof zipper of the to-be-tested luggage. The method not only breaks through the limitation that a traditional testing means can only obtain the total resistance and errors are caused by structural damage, but also remarkably improves the fineness and accuracy of resistance analysis.

The utility model relates to a switch technical field provides a kind of potentiometer formula multi-gear switch, including adjusting mechanism;Moving contact, with the adjusting mechanism connection;Resistance body, towards the side of moving contact is equipped with multiple recess, and moving contact rotates with the adjusting mechanism and is set in the recess;PCBA board, with the resistance body connection, and the PCBA board side away from the resistance body is provided with first pin, second pin and third pin, the resistance between the first pin and the second pin is the total resistance of the resistance body, the third pin is between the first pin and the second pin, and the third pin is connected with the moving contact.The utility model provides a kind of potentiometer formula multi-gear switch, utilizes the resistance linear variation of potentiometer and exports different voltage value, and the anti-magnetic field interference performance is strong, improves the accuracy of detection.

The utility model discloses a low-resistance energy-saving resistance wire which comprises a resistance wire body, connecting lugs are arranged at the two ends of the resistance wire body, the resistance wire body comprises a main core, a resistance reducing layer is arranged on the outer side of the circumference of the main core, the main core is one of a nickel-chromium alloy core and a copper-nickel alloy core, and the resistance reducing layer is a graphene plating layer. According to the energy-saving resistance wire, the two insulating layers are arranged, and the conducting layer of the resistance wire is divided into three layers, so that a parallel circuit is formed, the total resistance of the resistance wire can be effectively reduced, meanwhile, the current which can flow through is smaller than that of a single strand, the power of the resistance wire is further reduced, and the energy-saving effect is achieved.

Methods, processes, and systems for monitoring a resistive element and determining temperature are provided. A method includes: dividing the resistive element into n-number of segments and a sensor segment; measuring, by a sensing unit, total resistance data of the resistive element; measuring, by the sensing unit, temperature data of the sensor segment; computing, by a processor, resistance data of the sensor segment based on the temperature data to generate sensor segment resistance data; computing, by the processor, temperature distribution data for each of the n-number of segments based on the total resistance data, the sensor segment resistance data, and the temperature data; and generating, by the processor, output data based on the temperature distribution data for each of the n-number of segments.

This application discloses a layout structure, chip, and electronic device for a resistor string, belonging to the field of circuit technology. In the chip including the resistor string, multiple resistors are arranged in an N-row, M-column array; the multiple resistors are connected in series along two diagonals parallel to the N-row, M-column array, where N and M are both positive integers. This allows process offsets generated along different directions, such as rows or columns, to cancel each other out, thereby minimizing the total resistance value offset of the resistor string caused by process offsets and improving the performance of the resistor device.

The invention relates to the technical field of electrochemical sensors, in particular to a coding resistor unit and a biosensor, the coding resistor unit comprises a carbon wire and a silver wire which are overprinted with each other, and the silver wire divides the carbon wire into two areas; the laser engraving pattern completely falls into the range of the carbon line, and the laser engraving pattern is divided into two parts by the silver line and respectively corresponds to the two areas of the carbon line; according to the length and the width of the laser engraving pattern in each area of the carbon line, respectively compiling resistor units of corresponding gears, wherein the shape of each resistor unit changes along with the change of the length and the width of the laser engraving pattern; the resistor units in the same area are connected in series, and the resistor units in different areas are connected in parallel; and calculating the resistance value of each resistor unit and summing to obtain total resistance, and generating a corresponding coded value based on the total resistance. The method has the effect of generating and recognizing biosensor code identities as many as possible through a simple structure.

The utility model discloses an AC / DC combined load box for detecting an electric power test power supply, which comprises at least one first series branch, at least one second series branch and at least one current sensing device, and is characterized in that the first series branch is formed by connecting at least two parts with the total resistance value of 100 ohms in series; the first series branch is formed by connecting at least two parts with the total resistance value of 10 ohms in series, the second series branch is formed by connecting at least two parts with the total resistance value of 10 ohms in series, each part of the first series branch and the second series branch is composed of a fixed resistor, and one end of the current sensing device is connected to the initial end or the tail end of the first series branch. The load box is configured in a manner that the resistance values of the load box for the power test can be combined to be 220 omega, 110 omega, 55 omega, 20 omega, 10 omega and 5 omega. The load box provided by the utility model does not need complex technical operation, improves the test convenience and efficiency, effectively reduces the production cost, can provide more stable and reliable load conditions in the electric power test process, and is helpful for improving the test accuracy.

The application discloses a kind of fan blade die face state monitoring method, system, device and medium, it is related to wind power technology field, to timely monitor the state of fan blade die face, lay ladder resistance network on die face, and ladder resistance network is made of several resistors, if the state of fan blade die face is normal, all resistors in current ladder resistance network are parallel, so as to monitor whether the state of fan blade die face is normal, the current total resistance value of current parallel resistor in each resistor needs to be determined, and whether the state of fan blade die face is normal is judged by judging whether current total resistance value after parallel satisfies preset condition, the state of fan blade die face can be timely and accurately judged by measuring the current total resistance value of current parallel resistor in each resistor on ladder resistance network, realizes the real-time monitoring of the state of fan blade die face.

This invention relates to a method for analyzing the resistance components of a waterjet-propelled ship model. First, a resistance test is conducted on the bare hull. Next, a self-propelled test is performed to determine the rotational speed of the waterjet propulsion device at a given self-propelled point. Then, an L-shaped nozzle is installed, and the waterjet propulsion device operates at the self-propelled point rotational speed at a specific speed, measuring the total hull resistance. Simultaneously, the flow field in the flow region is measured using PIV technology, and the inlet longitudinal momentum is calculated. Finally, the total resistance is subtracted from the bare hull resistance and the inlet longitudinal momentum to obtain the impact of the propeller operation on the hull resistance at the corresponding self-propelled point. This invention employs conventional resistance tests, L-shaped nozzle resistance tests, self-propelled tests, and flow field measurements in the flow region to decompose the resistance into the hull's own resistance components and the hull resistance increment caused by the suction effect of the waterjet propulsion device. This allows for the identification of the propeller's impact on the hull, reducing hull shape optimization to a single objective function optimization problem and improving hull shape optimization efficiency.

The method and the device for measuring the contact resistance of the pole pieces are provided, the pole pieces comprise a positive pole piece and a negative pole piece, in the thickness direction of the pole pieces, the positive pole piece comprises a positive active material, a positive current collector and a positive active material which are arranged in sequence, and the negative pole piece comprises a negative active material which is arranged in sequence. The method comprises the following steps: acquiring the total resistance between the positive pole piece and the negative pole piece; obtaining internal resistance; obtaining the contact resistance of the pole piece according to the total resistance and the internal resistance; and adjusting the temperature and humidity of the space where the positive pole piece and the negative pole piece are located, so as to obtain the pole piece contact resistance of the pole pieces at different temperatures and humidity.

The application relates to a superconducting cable overlap length determination method and device, a superconducting cable, a computer device, a computer readable storage medium and a computer program product, which comprises the following steps: obtaining branch resistances of each superconducting ribbon in a superconducting cable; obtaining a current sharing resistance according to the branch resistances of each superconducting ribbon and a preset overlap resistance; and obtaining target overlap lengths of each superconducting ribbon according to the current sharing resistance and the branch resistances of each superconducting ribbon. The preset overlap resistance represents the welding resistance of the superconducting ribbon and a welding piece, and the target overlap length represents the welding length of each superconducting ribbon and the welding piece. The superconducting ribbon and the welding piece in the superconducting cable can be overlapped based on the obtained overlap length, so that the total resistances of each superconducting ribbon are basically the same, and the currents of each superconducting ribbon in the superconducting cable are basically the same. The phenomenon that the superconducting ribbon in the superconducting cable loses superconductivity due to uneven resistance is reduced, and the operation reliability of the superconducting cable is improved.

The application discloses a kind of unmanned ship cluster design methods of convergence, comprising the following steps: step 1, with the purpose of reducing total resistance and improving seakeeping when unmanned ship cluster is navigated in formation combination mode, design ship type;Step 2, design the connecting device of unmanned ship cluster;Step 3, design parallel type modular ship micro-grid;Step 4, design multi-boat power system and dynamics model;Step 5, design the overall tracking control strategy of unmanned ship cluster.The application proposes new type splicing drag reduction ship type, hull power integrated connecting device and other key innovations, and demonstrates and verifies the functions such as autonomous splicing, water patrol, target trapping of unmanned ship cluster through ship model test.

Device (106) for controlling the voltage-dependent resistance, comprising: at least two electrodes (202, 204) at closely spaced endpoints; a first layer (210) applied to the at least two electrodes (202, 204), wherein the first layer consists of a metal oxide; a second layer (208) applied to the first layer (210), wherein the second layer (208) consists of an electrically conductive metal oxide; a forming contact (206) applied to the second layer (208), wherein a combination of the forming contact (206), the first layer (210) and the second layer (208) functionally connects the at least two electrodes (202, 204) to each other; and a computer system functionally connected to the educational contact, wherein the computer system (102) is designed to apply a predetermined voltage to the first layer (210) and to the second layer (208) respectively, and to display an increase in the total resistance using a user interface.

The application discloses a charging circuit and a control method thereof, an air conditioner and a computer readable storage medium. The control method comprises the following steps: establishing a relationship curve between the resistance value of a thermistor in the charging circuit and the temperature; obtaining the resistance value of the thermistor at the current outdoor temperature according to the relationship curve; calculating the charging time of the equipment to be charged at the outdoor temperature to reach the preset electric quantity according to the resistance value of the thermistor and the electric parameters of the charging circuit; and adjusting the total resistance value of the charging circuit according to the comparison relationship between the outdoor temperature and the preset temperature, the charging time and the preset charging time. The scheme provided by the application comprehensively considers the comparison relationship between the current outdoor temperature and the judgment temperature of the low-temperature working condition, the actual charging time of the equipment to be charged and the preset charging time set by the program, adjusts the total resistance value of the charging circuit when the resistance value change of the thermistor affects the reliability of charging, and solves the influence of the resistance value change of the thermistor on the charging reliability under the low-temperature working condition.

This invention relates to a method for generating a chart indicating the driving resistance of a vehicle under arbitrary load, comprising the following steps: S1: Derivation of the formula for the total resistance of the vehicle; S2: Determining whether the vehicle under test has undergone a secondary coasting test. If no secondary coasting test is performed, proceed to step S3.1; otherwise, proceed to step S4.1; S3.1: Assuming the vehicle under test is fully loaded, generating the theoretical resistance and speed during coasting. F - V Curve graph; S3.2: Derive the theoretical resistance calculation formula within different speed ranges; S3.3: Calculate the absolute value of the error after forming the curve error of the theoretical resistance; S3.4: Generate the error guidance table under different deviations: Table 1; S3.5: Conduct actual coasting tests. This invention has higher calculation accuracy and makes up for the limitations of low efficiency and flexibility in measuring driving resistance by coasting tests.

The application discloses a shunting method, device, equipment and medium of an aluminum electrolysis cell, and belongs to the technical field of metallurgy. The method comprises the following steps: acquiring an actual shunt current and a shunt ratio of a shunt device; determining a target shunt current of the shunt device according to the shunt ratio and a preset series total current; and if an absolute difference between the actual shunt current and the target shunt current is greater than a preset deviation threshold, adjusting a first resistance of a variable resistor until the difference is less than or equal to the deviation threshold. The method can detect the deviation between the actual shunt current and the target shunt current of the shunt device in real time, and if the deviation is large, the first resistance of the variable resistor is adjusted, the branch total resistance of the branch in which the shunt device is located is changed, and thus the actual shunt current of the shunt device is changed, so that the deviation is reduced, and the shunt precision of the shunt device is improved.

This invention discloses a method for calculating the resistance value of an adjustable metal film cap resistor, comprising: pre-determining the size parameters of the adjustable metal film cap resistor; dividing the adjustable metal film cap resistor into four regions and calculating the resistance of the first region, the second region, and the third region respectively; calculating the resistance of the fourth region according to a pre-determined resistance correction parameter; and calculating the total resistance of the adjustable metal film cap resistor based on the resistances of the four regions. In this invention, the calculation of the partial resistance of the adjustable metal film cap resistor in a high-precision amplifier adopts a split-parallel approach, and a correction factor is added. The method, which combines segmentation and fabrication fitting, yields a calculation method for the adjustable metal film cap resistor. The calculated resistance error is within 5%, significantly improving the accuracy of the calculated resistance. This method can be used for the design of adjustable metal film cap resistors in high-precision amplifiers.

Embodiments presented in this disclosure generally relate to anti-counterfeiting for integrated circuits (ICs). More specifically, embodiments disclosed herein are directed to an authenticity validation structure integrated within an IC's packaging. One embodiment includes an IC and a metal alloy wire. The metal alloy wire comprises one or more resistive elements, and a total resistance of the one or more resistive elements provides a validation value for the package to ensure the package is authentic.

The utility model discloses a high-precision adjustable resistor. The high-precision adjustable resistor comprises a plurality of value selection resistor modules which are connected in series, a plurality of resistors are arranged between the input end and the output end of each value selection resistor module in a series connection or parallel connection mode, and the resistance value of the value selection resistor module can be switched and adjusted between zero and the maximum resistance value in a grading mode through switching selection of the selection switch. The resistance value adjusting ranges of the value selection resistor modules are set in a grading manner, so that the total resistance value of the resistor can be accurately adjusted after the value selection of the value selection resistor modules is respectively switched. According to the high-precision adjustable resistor disclosed by the utility model, higher-precision and quicker resistance adjustment is realized, so that the production efficiency is greatly improved.

A monitoring system for monitoring the temperature of a battery module having a plurality of battery cells, the monitoring system including an electric network including a plurality of thermistors, wherein each of the thermistors is thermally connected to a battery cell, a monitoring device that is adapted to measure a total resistance (Rtot) of the electric network including the plurality of thermistors and is further adapted to generate a signal in case of detecting that the value of the total resistance (Rtot) of the electric network traverses a predetermined threshold resistance value, wherein the monitoring system is adapted to determine a mean temperature (Tamb) of the battery module independently from the measurement of the total resistance (Rtot) of the electric network, and wherein the predetermined threshold resistance value is dependent on the mean temperature (Tamb) of the battery module.

The application provides a test voltage compensation method, device and medium for a test machine, wherein the test voltage compensation method of the voltage test machine comprises the following steps: performing initial testing on a target device to be tested based on an initial test voltage, so as to obtain the total resistance of the corresponding test circuit of the target device to be tested; determining a third test channel; connecting the first test channel, the second test channel and the third test channel based on two-to-two short circuit to form a corresponding channel group; obtaining the resistance of each channel group in parallel to form a resistance equation group, so as to calculate the resistance of the first test channel and the resistance of the second test channel; and calculating the target voltage after compensation of the initial test voltage based on the total resistance of the corresponding test circuit of the target device to be tested and the resistance of the first test channel and the resistance of the second test channel. The application can apply more accurate voltage to the device to be tested, and improve the accuracy of the test result.