64 results about "Block diagram" patented technology

The invention discloses an engineering drawing compliance intelligent review method and system constructed based on a knowledge base and a large model. The method mainly comprises the following steps: intelligently analyzing a design specification in a natural language form by utilizing a large language model, and dynamically constructing a machine-readable rule base and a knowledge base; uniformly converting the multi-format engineering drawing into a structured intermediate format; functional areas and primitives in the drawing are recognized through a computer vision model, and natural language information describing attributes of the functional areas and the primitives is generated; and finally, in combination with the knowledge base and natural language description, performing compliance judgment by utilizing the reasoning ability of the large language model, and generating an interpretable review report. According to the method, computer vision and a large language model technology are fused, so that the defects that traditional manual review is low in efficiency and prone to making mistakes and a traditional automatic tool lacks semantic understanding ability are overcome, and efficient and accurate engineering drawing automatic compliance review with deep semantic understanding ability is achieved. Figure 1 of the abstract is a system architecture block diagram.

The invention discloses a building effect picture generation method based on multi-condition weighted fusion and block control. The building effect picture generation method comprises the following steps: 1, training a customized model; 2, preliminarily generating a rough effect picture A; 3, extracting and calibrating a global cue word to obtain a global cue word P1; 4, style condition modeling: obtaining a style condition vector C3 by using a Redux model of Flux; 5, amplifying the image to obtain a high-resolution image B; 6, image partitioning and partitioning cue word obtaining are carried out, and a partitioning cue word set P2 is obtained; 7, condition fusion; 8, geometric control preprocessing, which is used for constraining a geometric structure in a block generation process; 9, block refinement generation is carried out, and a high-resolution block graph with rich details and accurate geometry is realized; and 10, performing block merging and consistency repairing to obtain a final building effect picture. According to the method, the problems that the existing generation resolution is limited, the geometric structure of the building is distorted, global and local prompts are inconsistent, the style drifts, the block splicing trace is obvious, engineering parameter intervals are lacked and the like are solved.

The invention belongs to the technical field of instrument detection, and provides a pointer instrument identification method and system for full-scale key point detection, and the method comprises the steps: obtaining an image of a to-be-detected pointer instrument, and determining a target position of the pointer instrument through a pre-trained dial detection model; intercepting a determined target position block diagram, preprocessing the target position block diagram to serve as an input image, and detecting all scale value positions, scale points, all pointer heads and pointer rotation center points by using a pre-trained key point model; intercepting an image of the scale value position obtained through detection as an input image, and recognizing a scale value value by using a pre-trained character recognition model; geometric correction and scale rearrangement are carried out; and performing linear interpolation on the pointer angle between the adjacent scale angles, and calculating the final reading of the meter according to the angle proportion and the corresponding scale value. According to the invention, strict requirements on pointer instrument detection in different scenes can be met.

The invention discloses a thermodynamic system parameter distribution method and device, and the method comprises the steps: S1, analyzing a block definition diagram and an internal block diagram from a SysML model to obtain a module structure description, a module value attribute, an interface specification of an equipment unit and a thermodynamic parameter description, and generating an analysis result, the analysis result comprises equipment unit port and connector information. And S2, based on the analysis result, mapping the equipment module to a simulation software element through name matching, and generating a steady-state thermal simulation model. And S3, associating the module value attributes with element attributes of the steady-state thermal simulation model through a parameter mapping mechanism, and generating attribute mapping data. And S4, generating a complementation parameter list according to the external design value and the heat balance demand. Therefore, the efficiency and accuracy of parameter allocation are improved, manual intervention is reduced, and it is ensured that the allocation result meets the requirements of system performance.

The invention relates to the field of system engineering modeling, and particularly discloses a SysML-based modeling method, system and product, and in the modeling method, a functional architecture design step comprises the following steps: creating a functional architecture document, sequentially creating each functional module, and defining a subordination relationship of the functional modules; defining the input and output function data of the function module, and defining the function data and the direction at the same time; reading and identifying the functional architecture document, and creating a module definition diagram and an internal block diagram; the physical architecture design step specifically comprises the following steps: defining a software module for realizing each functional module; defining a physical data type and a data packaging mode for realizing each piece of functional data; and generating a state machine diagram for describing an interaction relationship and state driving logic of corresponding physical data when the software module runs, and defining a data transmission channel by determining a port and a protocol. According to the method, the problem of low efficiency of modeling design and communication cooperation caused by semantic limitation and structural mixing of a traditional SysML modeling method can be solved.

This invention provides a high-end scientific instrument reliability analysis and design method based on SysML, belonging to the field of instrument reliability analysis technology. The method includes: constructing a system model of the target instrument using SysML, the system model including a requirements diagram, internal block diagram, and attribute library; extracting all failure modes from all failure mode libraries and assigning them global numbers to establish a failure mode mapping matrix; performing failure mode and impact analysis (FMEA) for the target instrument based on the system model to obtain a failure mode and impact analysis table; establishing a parameterized reliability model for each functional path; calculating the reliability constraints of each functional path based on the system model and the impact analysis table; and performing reliability analysis based on the measured attributes and reliability constraints of sub-components to generate an optimization scheme. The advantages of this invention are improved accuracy, consistency, and automation of reliability analysis.

A large language model (LLM) system includes a personal AI agent, an enterprise AI agent, and a public AI agent. A method for operating the LLM includes: executing a first action plan to obtain a first integrated answer and a first integrated score based on a first query using the personal AI agent; and executing a second action plan to obtain a second integrated answer and a second integrated score based on a second query using the enterprise AI agent. A method for applying the LLM system includes: transforming a bitmap of a block diagram into a scalable vector graphics and integrating a semantic tag into the scalable vector graphics; training the large language model by using the scalable vector graphics integrated with the semantic tag and using a functional specification document; and generating a structured text description of the block diagram using the large language model which is trained.

The invention discloses a mountain landscape balance degree quantitative evaluation method based on a simulation effect, and the method comprises the steps: simulating a to-be-evaluated mountain landscape effect, and exporting a simulation effect picture; performing image segmentation on the simulation effect image according to the pixel values to obtain a complex color block image; simplifying the complex color block map by using a clustering algorithm to obtain a simple color block map; extracting mountain contour lines of all levels based on the simple color block map; smoothing and vectorizing the mountain contour line of each level to obtain a vector mountain contour line of each level; calculating the equilibrium coefficient of the vector mountain contour line of each level in different view ranges; and obtaining an evaluation result by integrating the equilibrium coefficients of the mountain contour lines at all levels. According to the method, the evaluation result is relatively objective, and reliable technical guidance is provided for objective evaluation in real and virtual mountain landscape design; an evaluation object is a simulated mountain landscape effect and corresponds to a mountain landscape design result, and an evaluation result can be linked with upstream and downstream design links to directly guide design optimization.

The application discloses an intelligent question and answer method for circuit block diagram structured extraction and knowledge enhancement, comprising the following steps: obtaining a circuit block diagram image to be analyzed; inputting the circuit block diagram image into a trained circuit component detection model to obtain the geometric shape category and the boundary box coordinates of each circuit component; the geometric shape category comprises element components and connection arrows; performing text region detection and recognition on the circuit components belonging to the element components according to the geometric shape category and the boundary box coordinates to obtain corresponding component name information; and determining the port of each circuit component by using a self-adaptive weight matching port determination algorithm according to the detection result of the connection arrows output by the circuit component detection model to obtain the input and output port quantity and position coordinates of each circuit component. The method realizes end-to-end automatic processing from the input of the circuit block diagram image to the output of the intelligent question and answer, and improves the understanding depth of the circuit principle and the question and answer reliability.

A computer-implemented method is provided for generating a control program for a target platform from a graphical control model of a development platform. The graphical control model includes a block diagram having a plurality of blocks. The graphical control model references a definition database in which information relating to the graphical control model is stored. The definition database includes at least one target specification object. The method includes: generating the control program according to target platform-specific generation rules for the control program comprised in the target specification object, wherein the target specification object is referenced by one or more blocks of the graphical control model, and wherein the target platform-specific generation rules for control program portions that correspond to the blocks referencing the target specification object are taken into account when generating the control program.

The invention provides an information visualization method and system applied to intelligent building carbon emission monitoring, and the method comprises the steps: firstly obtaining an initial carbon emission data set of different functional regions of an intelligent building in a continuous monitoring period, and then carrying out the feature extraction of the initial carbon emission data set; generating a time sequence fluctuation feature set and a spatial distribution correlation feature set, then inputting the time sequence fluctuation feature set and the spatial distribution correlation feature set into a machine learning network, generating a visual basic data set containing a carbon emission evolution trend and a regional difference feature, and according to a visual coding rule, determining the carbon emission evolution trend according to the visual basic data set. According to the method, the characteristic components are mapped into graphical representation parameters, and finally, visual graph data containing a time axis carbon emission fluctuation thermodynamic diagram and a building space carbon emission distribution color block diagram are generated based on the graphical representation parameters, and are presented in real time through an interactive display interface, so that management personnel can quickly and accurately master the carbon emission condition of a building, and the construction efficiency is improved. And abnormal carbon emission regions and evolution trends can be found in time.

This invention discloses a deterministic delay and arbitrary range delay compensation adjustment architecture between multiple DA channels. In this architecture, each DAC consists of a set of ADC_CLK and SYSREF, and each FPGA consists of a set of REF_CLK and SYSREF. This architecture is used to design the clock block diagram and the deterministic delay synchronization output rate of multiple DACs. The frequency multiplier multiplies the reference input to output DAC_CLK and REF_CLK. DAC_CLK is set according to the DAC operating frequency, and REF_CLK is determined according to the operating range of the frequency divider. In this system, REF_CLK = DAC_CLK / N (N<=40). The frequency divider receives REF_CLK1 and divides it to output the required SYSREF. The clock fan-out fans out DAC_CLK into N DAC_CLKs according to the number of DACs. Through reasonable clock arrangement, only the clock fan-out chip can be used when the number of DACs is increased, ensuring that the output time remains stable after multiple power-on cycles while reducing hardware costs.

The application discloses a multi-unmanned aerial vehicle guidance probability optimal distribution method for cluster targets. In the method, a system using a PN guidance law is re-expressed as a linear time-varying system composed of an unmanned aerial vehicle autopilot and a seeker dynamics by using a zero control miss distance. According to a control theory, the system can be established as a block diagram form, with a target maneuver and an initial heading error as inputs and the zero control miss distance as output. Then, a covariance analysis method is introduced to accurately calculate the average value and variance of the zero control miss distance under the interference of the target random maneuver and the heading error. By combining the effective action radius of the unmanned aerial vehicle on-board load, the guidance probability of a single unmanned aerial vehicle to a single target can be accurately obtained, and the optimal distribution result is obtained by combining a marginal revenue enumeration method, and on this basis, the unmanned aerial vehicle is controlled to fly to the target by a proportional guidance guidance law.

The invention discloses a method for testing the sensitivity of a piezoelectric acceleration sensor in real time under thermal stress and vibration stress. The method comprises the following steps: step 1, establishing a set of piezoelectric acceleration sensor sensitivity real-time testing system for providing thermal stress and vibration stress; 2, building a test system program block diagram and designing a software interface on the basis of LabVIEW; 3, setting a thermal vibration stress environment of the test system; 4, determining peak-to-peak values of output signals of the to-be-detected sensor and the standard sensor; 5, calculating the sensitivity of the sensor to be detected; by using the test system, the sensitivity of the piezoelectric acceleration sensor can be tested in real time in a thermal and vibration dual-stress test environment.

The application belongs to the field of comprehensive radio frequency system, and particularly relates to a comprehensive radio frequency system model based on a meta model and a comprehensive radio frequency system design method, the system model comprising: a concept model, a logic model and a data model; the concept model comprising a use case model and a composition model; the use case model being used to describe a top layer operation architecture and a system boundary of the system, and being described by a use case diagram of a SysML language; the composition model being used to describe a concept composition relationship of the system, and being described by a block definition diagram of the SysML language; the logic model comprising activities and interfaces; the activities being basic elements for describing behaviors of the system, and being described by an activity diagram of the SysML language; the interfaces being basic elements for describing elements transmitted externally by different forms, and being described by an internal block diagram of the SysML language; the data model comprising system form elements and physical data; the system form elements being basic elements for instantiating concept of the system, and being described by a block definition diagram of the SysML language; and the physical data being basic elements for describing interactions between systems, and being described by an internal block diagram of the SysML language.

The invention belongs to the technical field of nuclear power station processes, and particularly relates to a comprehensive monitoring system for diagnosing a key safety function state tree of a nuclear power unit. Aiming at the six safety functions, respectively designing a monitoring picture of a safety function state tree and a backup panel alarm; a state tree procedure is combined with an instrument control system, parameters and alarm signals are selected according to entering conditions of the state tree procedure, logic of step-by-step judgment is set, automatic diagnosis is achieved, alarms are given according to different levels of diagnosis results of the state tree procedure, the levels include red, orange, yellow and green, and the alarms are introduced into the instrument control system; the diagnosis process and the diagnosis result are displayed in a picture mode, a diagnosis block diagram is drawn, the diagnosis block diagram is achieved in a monitoring picture, a person masters all information of the diagnosis process by checking the diagnosis monitoring picture, and logic and picture modes of the diagnosis process are achieved. According to the invention, automatic diagnosis is realized, and an operator is prompted to enter a certain safety function recovery regulation.

1. Name of the product in this design: Integrated application management interactive graphical user interface for electronic devices. 2. Intended use of this design: for use in an electronic device. 3. The key design feature of this product is its graphical user interface. 4. The picture or photo that best illustrates the key design points: Design 1 front view. 5. Design 1 is designated as the basic design. 6. Purpose of Graphical User Interface: A graphical user interface is used to display on electronic devices of existing design. The graphical user interface is mainly for integrated application management and interaction functions. Design 1's main view is the homepage of the integrated application management interaction; Design 1's interface change state diagram 1 is the interface displayed after clicking "Workbench Configuration" in the upper right corner of the Design 1 main view; Design 1's interface change state diagram 2 is the interface displayed after clicking "Application Components" in Design 1's interface change state diagram 1; Design 1's interface change state diagram 3 is the interface displayed after clicking "Save Settings" in Design 1's interface change state diagram 2; Design 2's main view is the homepage of the integrated application management interaction; Design 2's interface change state diagram 1 is the interface displayed after clicking "Workbench Configuration" in the upper right corner of the Design 2 main view; Design 2's interface change state diagram 2 is the interface displayed after clicking the dark square icon to the right of "Color Mode" in Design 2's interface change state diagram 1; the gray area covered by the gray block is the content display screen.

The present application provides a multifunctional digital and intelligent electrical secondary design method and system. The method comprises: importing drawing data of a manufacturer to acquire information of each terminal in the drawing data; determining a connection relationship between each terminal and a core wire on the basis of cable information, wherein the cable information is generated on the basis of loop information added by an infrastructure full-process platform; generating a schematic diagram and a terminal block diagram on the basis of the connection relationship between each terminal and the core wire; and acquiring optical fiber cabling information, and generating an optical distribution frame diagram on the basis of the terminal block diagram. In the method provided by the present application, terminal information in manufacturer drawings can be automatically identified and extracted, a connection relationship between each terminal and a core wire is accurately determined, a schematic diagram and a terminal block diagram conforming to construction standards are generated, and optical fiber cabling design and overall information management are supported, thereby improving the efficiency and quality of electrical design.

The invention discloses an analog circuit system block diagram assembly connection detection method. The method comprises the steps that an analog circuit system block diagram to be detected is acquired and preprocessed; inputting the preprocessed analog circuit system block diagram into a pre-trained component frame detection model to obtain the category and position of a circuit component in the analog circuit system block diagram and the position information of a wire, a wire arrow, a wire cross point and a text interference area; and obtaining a lead candidate binary image by using the position information of the lead arrows, the lead intersection points and the text interference area, purifying the lead candidate binary image, then executing a skeletonization algorithm, carrying out communication at a gap to obtain a final lead skeleton image, and then carrying out path tracking to obtain a connection relation table of the circuit assembly. According to the method, the manual labeling cost can be greatly reduced, the automation degree and accuracy of component detection and connection analysis are improved, and an efficient and reliable technical scheme is provided for intelligent analysis of the analog circuit system block diagram.

The application discloses a kind of automatic driving car diffusion navigation methods based on visual language model guide, it is related to the field of automatic driving, including: obtaining the image sequence and natural language instruction of car navigation, the semantic color block diagram of each frame is obtained by carrying out semantic mapping to each frame image in image sequence;The semantic color block diagram is spliced to form a time continuous semantic graph sequence;Through convolutional neural network, spatial structure feature extraction and splicing are carried out to semantic graph sequence, then encoding is carried out through Transformer network, and spatiotemporal fusion feature is obtained;Spatiotemporal fusion feature is used as conditional embedding vector, input pre-trained conditional denoising diffusion probability model to carry out trajectory prediction, according to the output trajectory point sequence, vehicle is navigated control.The application fuses image statistics priori and language prompt to generate semantic region map, guides diffusion model to generate future trajectory in line with instruction semantics, realizes end-to-end language driven control.

This invention discloses a modular simulation method for a direct-drive variable-speed pumped-storage unit, belonging to the field of hydropower storage technology. A piecewise linearized control block diagram for the direct-drive pumped-storage unit is established. The pump-turbine in the pumped-storage unit operates under two modes: power generation and motoring. Since the simulation analysis methods for power generation and motoring are largely similar, only the power generation mode is used as an example to establish the control block diagram. The value ranges of the PI regulation parameters for the power closed-loop and power multi-state modules are solved. After obtaining the value ranges, the Bode plot analysis method is used to design the power closed-loop regulation parameters. Simulation analysis under the power generation mode is performed based on the designed parameters to verify the effectiveness of the piecewise linear simulation method. The simulation method of this invention combines the simplicity of traditional fixed-parameter PID regulation with the adaptability of novel PID regulation to multiple operating modes in the new energy power grid, effectively suppressing fluctuations in the new energy power grid.

This invention discloses a method for optimizing the active power of a virtual synchronous machine connected to the grid based on frequency feedforward compensation. This optimization method, based on the traditional equivalent control block diagram of the active power of a virtual synchronous machine connected to the grid, improves the transient damping of the virtual synchronous machine and its ability to suppress dynamic oscillations of the active power during grid connection by adding a frequency feedforward compensation stage. It solves the problem that the dynamic characteristics of the active power during grid connection and the primary frequency regulation characteristics cannot be simultaneously considered in the process of providing a certain amount of virtual inertia support to the grid during the operation of a traditional virtual synchronous machine connected to the grid. It also has the advantages of not affecting the primary frequency regulation characteristics, simple control parameter design, not increasing the order of the control system, and avoiding overshoot in the output frequency. It is applicable to the field of virtual synchronous machine grid connection control in power electronics technology.

The invention discloses a product manufacturing process reliability evaluation method. Firstly, a product manufacturing process reliability GO model block diagram is established according to a GO method; then establishing a product manufacturing process system symbol directed graph SDG model; then, based on three index parameters including a virtual gravity model, the proximity of nodes and the centrality of feature vectors, weight distribution is conducted on the index parameters through an entropy weight method, and then the process node importance degree of the product manufacturing process is calculated; and then establishing an overall reliability evaluation model of the product manufacturing system, and providing reliability confidence interval estimation of the product manufacturing process. Aiming at the current situation that the reliability of the product manufacturing process cannot be accurately evaluated, the accuracy of reliability evaluation is improved by analyzing the importance of different nodes and combining the reliability of the nodes, the interference of human subjective factors is reduced, and the product manufacturing process can be optimized into a model consisting of each part and a process subsystem thereof, so that the reliability of the product manufacturing process is improved. The method can adapt to the condition of different manufacturing processes of different products, and reduces the difficulty of reliability evaluation.

The invention relates to a method for generating source code from one or more blocks of a block diagram, which includes blocks and signal connections between blocks. Generating source code comprises transforming the block diagram into an intermediate representation, successively optimizing the intermediate representation, and translating the optimized intermediate representation into source code. The optimization according to the invention comprises detecting at least two parallel control flow branches, in each of which a multi-component variable is copied, resulting in a single multi-component output variable after the at least two control flow branches, verifying whether a regular value copy from a source variable to the output variables occurs in all parallel control flow branches, and replacing the output variables with a pointer to one of the source variables.Furthermore, the invention relates to a method for configuring a control unit, a computer program product and a computer system.

The application provides a three-dimensional model-based comprehensive wiring design method and device, equipment and readable storage medium, relates to the technical field of three-dimensional building models, and realizes establishment of each standard module parameterized family in a comprehensive wiring diagram, manual information socket placement, automatic statistical table, automatic generation of each layer horizontal work area and system block diagram separation frame, extraction of calculation data and automatic association with a marked family by configuring a Dynamo parameterized design plug-in in Revit software. The comprehensive wiring system diagram can be standardized, modularized and normalized. In combination with the requirements of a project, each parameterized family module is reasonably set. Through combination of manual arrangement and automatic calculation, the design specification of the drawing can be improved and the standard drawing requirements can be met. Meanwhile, through automatic association of the floor management room marked family and the parameterized family module at any time, automatic calculation and change of information parameters can be met, and the drawing parameter association linkage is improved.

Didactic experimental system for teaching (especially control and drive) technical and scientific fundamentals in the classroom, comprehensive a) an electronic base unit with embedded microcontroller, WLAN and Bluetooth LE interface, b) wired connection options for external expansion modules, c) permanently integrated hardware for control engineering, drive engineering, and measurement engineering tests, d) a wirelessly connected browser-based user interface with block diagram display, parameter input, real-time visualization and data export capability,

The invention relates to the technical field of power grid systems, and discloses a new energy station equipment group stability analysis method based on complex signals, which comprises the following steps of: grouping equipment in a power grid system by establishing a universal power grid system topological structure; the power grid system is divided into different subsystems for concerned interaction behaviors so as to carry out frequency domain modeling based on orthogonal complex signals, the overall impedance and admittance network of the power grid system is constructed, an equivalent orthogonal complex signal negative feedback closed-loop system structure block diagram is deduced, a complete Neyelid curve of loop gain is drawn, and the overall impedance and admittance network of the power grid system is obtained. According to the relative position relation of the closed Neyeshade curve of the loop gain and the critical point in the complex plane, the stability performance of the power grid system under the current supporting equipment control method is judged, meanwhile, after the supporting equipment control method is replaced, the stability of the power grid system can still be judged again, and the stability of the power grid system is improved. And a theoretical basis is provided for a transient stability improvement path under the synergistic effect of different control strategies.

The invention relates to a method for generating source code from one or more blocks of a block diagram comprising blocks and signal connections between blocks. The generation of source code comprises transforming the block diagram into an intermediate representation, gradually optimizing the intermediate representation, and translating the optimized intermediate representation into source code. The optimization according to the invention comprises detecting at least two parallel control flow branches, in each of which a multi-component variable is copied, in which case a single multi-component output variable results after the at least two control flow branches, checking whether a regular copy of values from a source variable into the output variables takes place in all parallel control flow branches, and replacing the output variables with a pointer to one of the source variables. Moreover, the invention relates to a method for configuring a controller, to a computer program product and to a computer system.

The invention discloses a low-power-consumption card detection intelligent awakening method based on machine learning, which belongs to the field of low-power-consumption embedded application and comprises the following five steps: step 1, establishing an awakening and non-awakening dichotomy discrimination model; 2, collecting a data set containing information such as an RSSI time sequence; step 3, concluding and extracting features from the directions of time domain, frequency domain, difference, starting and ending features and the like; 4, dividing a training set and a test set for model training and performance evaluation respectively, and training a decision tree model on a PC by utilizing MATLAB to verify the accuracy; step 5, saving node information of the decision tree in a FLASH of the MCU, acquiring the node information when the MCU is powered on, and controlling a lightweight advanced rule engine of the card reading chip through a configuration register so as to realize LPCD awakening; and step 6, continuous learning. The system block diagram is shown in the figure 1, card approaching and various interference events are accurately distinguished, the false wake-up or non-wake-up rate of the system is reduced, and the reliability is improved while the power consumption of equipment is ensured.

The invention provides a cycloid-like planetary transmission gear full tooth surface modification method, and relates to the technical field of gear design and manufacturing. The method comprises the steps that a contact analysis model of the internal gearing type cycloid external gear and the internal gear is established, the external gear is a driving gear, and the scheme that the external gear is subjected to shape modification and the internal gear is not subjected to shape modification is considered on the basis of multiple aspects; determining an optimization method of the modification amount and the modification parameters of the tooth profile and the tooth direction modification, and adopting a finite element method to realize full tooth surface modification parameter optimization by adjusting the modification amount and the modification length for multiple times; a process of optimizing tooth surface modification parameters is given in a block diagram form, and on the premise that a transmission structure, working condition loads and error assembly are considered, comprehensive optimization is achieved through step-by-step adjustment through finite element simulation; and the contact ratio, the tooth surface load, the tooth surface stress distribution, the meshing rigidity and the transmission error of the cycloid-like gear before and after modification are compared, which shows that the modified tooth surface has remarkable advantages in the aspects of improving the gear strength and the transmission stability.