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143 results about "Sequential logic" patented technology

In digital circuit theory, sequential logic is a type of logic circuit whose output depends not only on the present value of its input signals but on the sequence of past inputs, the input history as well. This is in contrast to combinational logic, whose output is a function of only the present input. That is, sequential logic has state (memory) while combinational logic does not.

Running state monitoring and fault diagnosis method for loom control system based on machine vision

The invention relates to the technical field of industrial vision and intelligent monitoring, and discloses a loom control system operation state monitoring and fault diagnosis method based on machine vision, which comprises the following steps: acquiring a video stream in a loom shed area and constructing a two-dimensional space-time slice tensor; performing global motion compensation processing on the space-time slice tensor by using a homography transformation matrix, mapping a compensated dynamic texture feature sequence to a three-dimensional phase space by using a time delay embedding algorithm, and reconstructing a closed phase space trajectory representing periodic operation logic of the loom; the discrete Frechet distance between the phase space trajectory of the current operation cycle and the preset reference trajectory is calculated, and a control instruction is generated. The health degree of the sequential logic of the system is directly quantified on the premise that specific components are not recognized by using the invariant characteristic of the phase space manifold topology; the technical problems that small phase lag is difficult to perceive and nonlinear faults cannot be early warned in a strong noise environment are solved.
Owner:HU ZHOU XIN NAN HAI ZHI ZAO CHANG

Multi-level circulation box quantity distribution scheduling method and system

The invention relates to the technical field of electric digital data processing, and discloses a multi-level circulation box quantity distribution scheduling method and system, and the method comprises the steps: extracting a request numerical value in a resource request instruction, comparing the request numerical value with a reference limit, and when the request numerical value exceeds a preset triggering proportion, executing the step 1; splitting the resource request instruction into an activated detection sub-instruction and a frozen main body sub-instruction; issuing a detection sub-instruction and receiving a processing state updating signal fed back by the target node; calculating a state circulation rate of the detection sub-instruction, and when the state circulation rate is higher than a preset circulation rate threshold value, unfreezing the main body sub-instruction and triggering an issuing operation; according to the invention, through an active interaction mechanism of data instruction fragmentation and sequential logic gating, prediction of an uncertain demand is converted into determinacy verification of instant physical feedback; the problems of system resource locking and scheduling deadlock caused by input data distortion in a distributed network are solved.
Owner:TIANJIN PORT INFORMATION TECH DEV CO LTD

Rigid-flexible switching type four-door hinge mounting tool and method based on pneumatic sequential logic

The invention discloses a rigid-flexible switching type four-door hinge installation tool and method based on pneumatic sequential logic, and relates to the technical field of automobile manufacturing equipment, and the rigid-flexible switching type four-door hinge installation tool comprises a positioning and clamping operation module, a ground pushing chassis module and a pneumatic sequential logic floating module. The floating module comprises a three-dimensional decoupling mechanism, a normally-closed self-resetting mechanism and a normally-open delaying locking mechanism. The pneumatic control system is provided with three parallel branches including a reset unlocking branch, a clamping operation branch and a delay locking branch with a one-way sequence valve, and a pure pneumatic logic time sequence is constructed by utilizing the characteristic that an opening threshold value is set between dynamic pressure and stable pressure. By means of the scheme, accurate switching of pushing rigidity, positioning flexibility and tightening rigidity can be automatically achieved only through on-off of a single air source, complex electrical control is abandoned, the rigid and flexible requirement contradiction in follow-up assembly is effectively solved, vehicle body damage caused by time sequence disorder is avoided, and hinge installation accuracy and equipment reliability are improved.
Owner:CHINA FAW CO LTD

Semi-cut mountain modeling database construction method and system based on multi-dimensional parameters

The invention relates to the technical field of database structures, in particular to a semi-cut mountain modeling database construction method and system based on multi-dimensional parameters, and the method comprises the following steps: extracting slope elevation and cutting angle fields, arranging the sequence of related fields and unifying formats, calculating a text relationship and generating numbers, dividing blocks, and writing the blocks into a structural text. And forming a database structure construction atlas. According to the method, a regularized field cluster is formed by constructing a field value set and a structure sequence, a field jump path is established, the sequence direction is identified, clear expression of a field combination mode and continuing logic is achieved, content blocks are divided in combination with node information, the pairing relation is adjusted, and a unified format is set to enhance field normalization; the method comprises the following steps: binding elevation and strength sections through attribute injection, completing classified undertaking and structure reconstruction of text records, realizing field system output in cooperation with directory naming and path registration, enhancing the ordered organization and linkage ability among fields, and improving the expression efficiency and expansion adaptability of structure construction.
Owner:THREE GORGES NEW ENERGY POWER GENERATION (MAILE) CO LTD +1

Water conservancy equipment cooperative operation system based on industrial control system

The invention relates to the technical field of water conservancy project automation and industrial control, in particular to a water conservancy equipment collaborative operation system based on an industrial control system, which comprises a programmable input mapping and logic matching unit, a data processing unit and a data processing unit, the system carries out binary bit mode matching on the operation result and the feature data block in the memory; the logical operation and addressing unit is used for calculating control lag time and generating a structured digital control sequence data stack; the sequential control and instruction addressing unit is used for generating a cooperative control instruction set containing sequential logic; the output mapping and checking unit is used for reading real-time feedback, and if deviation exists, an interruption compensation program is triggered to correct an action curve of an executing mechanism; the storage rewriting and loop optimization unit is used for correcting transmission delay parameters of the model and realizing closed-loop optimization; according to the method, the problem of model distortion caused by physical property drift is solved, and stable full-life-cycle operation is ensured.
Owner:ANHUI ZHONGKE ZHIBO TECH DEV CO LTD

Automatic test-oriented communication protocol and sequential logic cooperative control system

The invention discloses an automatic test-oriented communication protocol and sequential logic cooperative control system, and relates to the technical field of nuclear field instrument and control system test, and the system comprises a 7-slot computer cage, a controller, a function card, a dual-path full duplex communication link, and a power supply monitoring module. The controller is fixed at the slot 0 of the 7-slot cage, and the function card is inserted in the slot 1 to the slot 6 in a mixed manner. And the controller is connected with each function card through a double-path full duplex communication link, is linked with the power supply monitoring module through a GPIO (General Purpose Input / Output) signal so as to monitor and control the power supply of the function card, and is also connected with the HMI through a gigabit Ethernet. The controller receives a test case of the HMI based on a first preset communication protocol, generates a test instruction, packages the test instruction into a control frame through a second preset communication protocol, issues the control frame according to three time sequence regulation and control modes, receives the state and test data returned by the function card, and intervenes the abnormal function card through the power supply monitoring module. And the function card analyzes the instruction, executes a test, collects and returns data, and reports the operation state at the same time.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

Closed-loop virtual test flight pre-evaluation method and medium

The invention relates to a closed-loop virtual test flight pre-evaluation method and a medium, and relates to the field of flight tests. The method comprises the steps of constructing a digital twin module which comprises a pneumatic sub-model, a flight control sub-model, a power sub-model and a structure sub-model, defining a tilt transition specific high-risk subject and generating a test case, executing parallel Monte Carlo simulation and hardware-in-the-loop test, performing flight safety risk identification and envelope boundary quantification, and determining a tilt transition specific high-risk subject according to the tilt transition specific high-risk subject. And generating a risk assessment report and optimizing a real aircraft test flight outline. Wherein the aerodynamic sub-model adopts a dynamic vortex grid correction method based on CFD offline calibration and online query; the flight control sub-model comprises a configurable fault injection module based on a script engine, and the configurable fault injection module is used for defining a coupling fault sequence of sequential logic and a condition triggering relation. Compared with the prior art, the accuracy and the applicability of the pre-evaluation of the virtual test flight are improved.
Owner:LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT

Adaptive feature fusion intrusion detection method and system for electric power industrial control network

The invention provides a self-adaptive feature fusion intrusion detection method and system for an electric power industrial control network, and the method comprises the steps: enabling the generation of a sample to strictly follow the sequential logic of an industrial control protocol through introducing a protocol state perception dynamic sampling mechanism; multi-modal causal feature extraction is adopted, protocol semantics, equipment fingerprints and causal association features are fused, and the feature discrimination ability is effectively improved; designing a federated residual error enhancement fusion model, and realizing safety cooperative training and heterogeneous data adaptation between distributed nodes; and in combination with deep reinforcement learning and transfer learning, constructing a detection parameter dynamic tuning mechanism. According to the method, various attacks such as DoS attacks, protocol forgery and unauthorized access can be accurately identified, the real-time performance of services is guaranteed, meanwhile, the detection precision is remarkably improved, the false alarm rate is reduced, and the method has high environmental adaptability and can be widely applied to electric power industrial control scenes such as transformer substations and dispatching centers.
Owner:ZHANGZHOU POWER SUPPLY COMPANY STATE GRID FUJIANELECTRIC POWER +1

Dynamic configuration cockpit host video test multiplexing method

The invention belongs to the technical field of computers, and particularly relates to a dynamically configured cockpit host video test multiplexing method. The method aims at solving the problems that a traditional testing means is poor in universality, incomplete in coverage and low in automation degree. A structural equipment description file is constructed by analyzing a host technical document, an adaptive dynamic test configuration template is automatically generated in combination with a test case library, and flexible configuration of multi-channel video stream parameters, abnormal injection modes and time sequence logic is supported. A containerized virtual signal source is deployed on a universal computing platform, and an analog video stream conforming to an input specification is generated in real time. Through the equipment description driving and virtualization signal generation technology, the multiplexing capability and coverage integrity of the testing system are improved, efficient and automatic testing of multiple types of hosts is achieved, and the hardware cost and the deployment period are remarkably reduced.
Owner:SHENZHEN TINGBAO TECH CO LTD

Distributed sequential logic conflict resolution method for distributed control system

The invention discloses a distributed sequential logic conflict resolution method for a distributed control system, which relates to the technical field of automatic control, and can accurately calculate the queuing retention time length of an instruction in a network by acquiring the real-time load and identifier of each network node in an instruction transmission path, thereby improving the accuracy of the queuing retention time length of the instruction. The local clock of the controller is subjected to high-precision correction by combining the basic transmission delay of the link, so that the real sequential relationship of the instruction is restored, and the interference of clock asynchronization and network delay fluctuation in the distributed system on sequential judgment is fundamentally eliminated; meanwhile, on the basis of a real-time working condition self-adaptive physical constraint model, the theoretical duration needed by equipment state change is quantified, the corrected clock difference value and the theoretical duration are dynamically matched, causal instructions can be effectively distinguished from the physical level, and the accuracy and reliability of conflict resolution are remarkably improved.
Owner:NANJING HORBON ENERGY TECH CO LTD

Smart factory production scheduling and energy supply collaborative optimization method and system integrating clean energy

The invention discloses a smart factory production scheduling and energy supply collaborative optimization method and system integrated with clean energy, particularly relates to the technical field of industrial process control, and is used for solving the problems of insufficient consumption of clean energy and reduction of production efficiency caused by neglecting of production flow sequential logic in the prior art. The method comprises the following steps: calculating a carbon-energy collaborative efficiency index by acquiring energy consumption data, production tasks and clean energy supply information in an industrial production process, judging whether clean energy supply meets a production scheduling requirement, and if not, constructing a directed graph network model of the production tasks and calculating propagation betweenness centrality; key paths are identified, key time sequence conflict points are positioned, system core output performance attenuation caused by all the key time sequence conflict points is simulated, function toughness loss is quantified in the recovery process, the priority is determined, and finally the execution sequence and time sequence of corresponding production tasks are sequentially adjusted according to the priority. The invention aims to minimize time sequence conflicts and maximize clean energy consumption.
Owner:SHANDONG YUSHENG COMPREHENSIVE ENERGY CO LTD

A method and system for maintaining consistency between a floating point operation algorithm verification prototype and hardware engineering

A method and system for ensuring consistency between a floating-point arithmetic algorithm verification prototype and hardware engineering, relating to the field of floating-point arithmetic, are disclosed. The method includes: obtaining the HDL source code of a hardware floating-point IP core; converting the sequential logic describing floating-point operations in the HDL source code into a behavioral-level combinational logic expression, which retains the computational logic of floating-point operations; compiling the converted HDL source code using an HDL compilation tool to generate a library file executable on a processor; calling function interfaces in the library file to perform floating-point operations in a prototype verification program running on the processor; and integrating a hardware floating-point IP core into the hardware system to implement floating-point operations, wherein the library file and the hardware floating-point IP core are based on the same HDL source code. Implementing this method can reduce the cost of ensuring consistency between the floating-point arithmetic algorithm verification prototype and hardware engineering.
Owner:SUZHOU SILITER SEMICON TECH CO LTD

Complex man-machine cooperation station operation compliance sequential logic verification method and system based on multi-modal video

The invention discloses a complex man-machine cooperation station operation compliance sequential logic verification method and system based on a multi-modal video, and the method comprises the steps: obtaining a standard operation instruction (SOP), analyzing the SOP, and converting the SOP into a formal model with sequential logic constraints; synchronously acquiring a video data stream, an audio data stream and an equipment data stream of the station; performing real-time analysis on the video data stream by using a human-object interaction (HOI) deep learning model to generate structured visual event metadata; taking the visual event metadata as input, and driving the formalized model to carry out state evolution so as to judge the compliance of an operation process; and performing fusion cross validation on the audio data stream and the equipment data stream at a preset key verification node by taking the time window of the occurrence of the visual event as a reference. By fusing fine-grained visual interaction recognition, strict sequential logical reasoning and multi-modal cross validation, high-reliability closed-loop verification can be carried out on operational process compliance and physical result authenticity.
Owner:ZHUJI HEWU DIGITAL TECH CO LTD

Sequential logic control circuit for noise shaping SAR ADC

The invention relates to the technical field of sequential control, and discloses a sequential logic control circuit for a noise shaping SAR ADC (Synthetic Aperture Radar Analog to Digital Converter), which comprises an analog signal acquisition circuit for receiving and preprocessing an initial input signal; the noise shaping circuit is used for performing frequency spectrum shaping on quantization noise in the analog signal and generating the analog signal subjected to noise shaping; the successive approximation type analog-to-digital converter is used for performing bit-by-bit comparison with the analog signal subjected to noise shaping and gradually completing conversion from the analog signal to the digital signal from the highest bit to the lowest bit; and the clock control circuit is used for coordinating sequential logic among the analog signal acquisition circuit, the noise shaping circuit and the successive approximation type analog-to-digital converter. According to the method, frequency spectrum remodeling is carried out on the quantization noise in the signal, the signal-to-noise ratio of the signal is remarkably improved on the premise that the hardware complexity is not additionally increased, and then interference of the noise on follow-up analog-to-digital conversion is reduced.
Owner:XIDIAN UNIV +1

A security monitoring and analyzing system and method applied to an electronic ticket platform

The application discloses a kind of security monitoring analysis system and method applied to electronic ticket platform, it is related to information security technical field, to solve the time difference attack problem of state synchronization delay implementation in distributed ticket system;Method includes: monitoring system captures multiple operation request sequences to the same ticket in specific time window;Respectively from business access end and distributed account book obtain the local trusted time stamp and block confirmation time stamp of each operation;After uniform to coordinated universal time benchmark, traversal all operation to execution serialization logic judgment: when the local time of operation one is earlier than operation two, but its on-chain confirmation time is later than operation two, it is judged that there is timing logic paradox;Accordingly, it is determined that fraudulent attack occurs and generates tamper-proof security audit report and pushes to regulatory party;The application realizes accurate insight into hidden fraud by cross-validation of double-source time stamp, fills the blind area of existing monitoring technology.
Owner:上海市大数据中心

Behavior verification method and device of information physical system, electronic equipment and medium

The invention provides a behavior verification method and device of an information physical system, electronic equipment and a medium, and the method comprises the steps: for a to-be-verified function of the to-be-verified information physical system, obtaining a mixed operation signal which is generated in the operation process of the system and is related to the to-be-verified function; obtaining a time-sequence point to be verified; calling a pre-defined mixed signal sequential logic formula for formally describing the function to be verified; utilizing Boolean semantics to judge whether the mixed operation signal meets a mixed signal sequential logic formula on a time-sequence point or not; and / or, calculating a robustness value of the mixed signal sequential logic formula on a time-sequence point by using robust semantics so as to quantify the degree of meeting or violating the mixed signal sequential logic formula; and determining whether the to-be-verified function passes verification or not according to the judgment result of the Boolean semantics or the robustness value. Unified processing and verification of the mixed operation signals are realized through the method.
Owner:BEIJING JIAOTONG UNIV

Ribbon winding device of ribbon loom

The invention provides a ribbon winding device of a ribbon loom, and belongs to the technical field of ribbon looms. The device comprises a mounting plate and a driving box, a plurality of clamping and cutting mechanisms are correspondingly arranged on the mounting plate and the driving box, and each clamping and cutting mechanism comprises a clamping assembly and a cutting assembly; a driving cavity is formed in the driving box, and a driving assembly is arranged in the driving cavity and used for driving the clamping and cutting mechanism to clamp and cut the braid. According to the ribbon winding device of the ribbon loom, through cooperation of the cutting cam and the clamping cam which rotate synchronously, sequential logic of clamping, cutting and loosening in the ribbon cutting process is achieved.
Owner:XUZHOU ZHENYI PLASTIC PRODUCTS CO LTD

A method, system and electronic device for controlling a complex sequence of forced and logical associations for a die casting machine

This invention discloses a composite sequence forced and logical association control method, system, and electronic device for die-casting machines, relating to the field of die-casting machine testing technology. The invention collects multi-source operating data from the die-casting machine and, based on this data and pre-set process rules, determines the process state of the die-casting machine. It acquires a pre-stored forced test sequence and generates corresponding test instructions. The forced test sequence includes trigger conditions and forced steps arranged in a logical order. During the operation of the die-casting machine, it monitors in real time whether the trigger conditions are met. If met, the test instructions are executed according to the timing logic of the forced steps. Simultaneously, it continuously monitors the process state and die-casting machine safety parameters, and controls the interruption and reset of the test instructions based on the monitoring results. This method supports repeatable and safe simulation and verification of complex operating conditions or occasional faults, improving the testing efficiency of the die-casting machine control system.
Owner:NINGBO FREE TRADE ZONE HAITIAN ZHISHENG DIE CASTING EQUIPMENT CO LTD

Automated verification of technology specific and technology independent logic models of a memory array

A computer implemented method for automated generation and verification of a technology specific logic model and a technology independent logic model of a memory array, the method at least comprising: having a first set of parameters; having a set of constraints, creating a second set of parameters; generating the technology independent model of the memory array wherein the second set of parameters and the set of constraints are used; generating the technology specific model of the memory array wherein the first set of parameters and the set of constraints are used; verifying the technology independent model and the technology specific model for equivalence on a sequential logic basis.
Owner:INTERNATIONAL BUSINESS MACHINE CORPORATION

A hierarchical controller synthesis method based on dynamic quantization linear sequential logic specifications

A hierarchical controller synthesis method based on dynamic quantization under a linear sequential logic specification belongs to the field of nonlinear system control technology. First, a model checking algorithm is used to obtain an acceptable path for the linear sequential logic specification, providing a high-dimensional solution for the controller synthesis problem. Second, a quantization interval is generated based on a dynamic quantizer to verify the implementation of the acceptable path. Finally, a local abstract controller is obtained by solving the auxiliary control problem. This local abstract controller is refined to obtain a local hybrid controller, which is then combined into a global hybrid controller. Applying this controller to the original system enables it to satisfy the given linear sequential logic specification. The abstract model construction and controller synthesis adopted in this invention are both local and dynamic, thus effectively reducing computational complexity. Since each quantization space can be considered independently, the proposed hierarchical mechanism is more effective than existing methods in solving larger and more complex problems.
Owner:DALIAN UNIV OF TECH

Simulation model, verification platform and method based on TLM

The embodiment of the invention discloses a simulation model based on TLM, a verification platform and a method. Wherein the simulation model based on the TLM comprises a TLM Model, a first interface conversion module, a second interface conversion module and a transaction level conversion module; wherein the TLM model is used for simulating behaviors of a to-be-tested module; the first interface conversion module is used for realizing conversion between a transaction of a first transaction level of the TLM Model and a sequential logic signal of a first transaction level interface of the to-be-tested module; the transaction level conversion module is used for realizing conversion between transactions of a first transaction level and transactions of a second transaction level; and the second interface conversion module is used for realizing conversion between transactions of a second transaction level and sequential logic signals of a second transaction level interface of the to-be-tested module. Through the simulation model, college cooperation verification can be carried out among different abstract levels of the to-be-tested module.
Owner:HYGON INFORMATION TECH CO LTD

Main and standby switching method and system for water dispatching automation system

The invention provides a main and standby switching method and system for a water dispatching automation system, and relates to the field of water dispatching automation and data processing. The method aims at solving the problems that in an existing method, business event flow sequential logic is ignored, and instructions are prone to being disordered and lost due to switching. The method is applied to a framework comprising a main system, a standby system and a time source, and the main system and the standby system are synchronous in time. When executing the water dispatching control instruction, the main system generates a water dispatching event containing instruction content and a timestamp, and stores the water dispatching event in a shared event sequence cache region; the standby system periodically pulls an event, simulates execution after verification by a business rule engine in combination with an associated context, constructs an event node tree diagram with a weight, and prunes based on an actual result; and when the switching is triggered, comparing the actual result of the main system with the execution sequence of the standby system, matching an adaptive path, and avoiding error instruction marks. The method guarantees the time sequence consistency and logic correctness of the event flow, achieves the intelligent seamless switching of a main system and a standby system, and guarantees the continuous and stable operation of a water dispatching service.
Owner:CHINA YANGTZE POWER

Verilog rtl code hardening method and related device

The application discloses a Verilog RTL code reinforcing method and related equipment, relates to the programming technical field, and mainly aims at solving the problem that there is no proper reinforcing method to make the circuit resist 0 and 1 error flip. The method comprises the following steps: obtaining a time sequence logic code section of an original Verilog RTL code file containing time sequence logic; performing format identification on the time sequence logic code section to generate a time sequence logic identification version code file; determining a flip-flop code in the code section with the format identification; and adding redundant combination logic voting circuit code to the flip-flop code to reinforce the original Verilog RTL code. The application is used in the Verilog RTL code reinforcing process.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI LTD

Agile aircraft initiating explosive device online adaptive health detection system and detection method

The invention relates to an on-line self-adaptive health detection system and method for initiating explosive devices of an agile aircraft, and belongs to the technical field of on-line detection of spaceflight electronic systems. Comprising a constant current source, an integrated computing power center, a reusable detection link and an ignition loop, wherein the integrated computing power center comprises a sequential logic control algorithm module and a data estimation module; the reusable detection link comprises an analog switch 1, an isolation optocoupler, a multi-choice analog switch, a voltage following module, an isolation operational amplifier module, a differential operational amplifier module and an AD acquisition module; the ignition loop comprises an initiating explosive device to be detected; according to the invention, the problems of poor precision, complex hardware, low test efficiency and the like of a traditional single-path voltage measurement method are solved, and the test coverage, safety and application reliability of the agile aircraft are improved.
Owner:SHANGHAI AEROSPACE CONTROL TECH INST

AC charging pile fault diagnosis method and system based on edge calculation

The invention is suitable for the technical field of edge computing, and relates to an AC charging pile fault diagnosis method and system based on edge computing, and the method comprises the steps: a transformer area fusion terminal collects the total power of a transformer area and the charging characteristic power of a charging pile through HPLC communication; the power and current of the charging pile during charging, and the residual current and short-circuit characteristic current detected by the residual current protector are measured through the intelligent electric meter. Based on the matching relationship between the total power change of the transformer area and the charging characteristic power, establishing the mapping relationship between the intelligent electric meter and the corresponding AC charging pile; whether the alternating current charging pile breaks down or not is judged by combining sequential logic of the total power change, the residual current change, the short-circuit characteristic current change and the power change of the intelligent electric meter, and the fault type is determined; and after the fault is determined, the transformer area fusion terminal reports the fault information to the system master station through the communication network. According to the method, additional hardware facilities do not need to be added, the real-time performance, the accuracy and the safety of fault diagnosis of the alternating current charging pile are high, and the cost is low.
Owner:ZHONGSHAN JUCHENG ELECTRIC POWER CO LTD

Three-level inner and outer tube time sequence control circuit with hardware interlocking

The invention discloses a three-level inner and outer tube time sequence control circuit with hardware interlocking. The three-level inner and outer tube time sequence control circuit comprises the following circuit modules: a PWM fault integration circuit, a PWM outer tube signal transmission and level conversion circuit, a PWM inner tube signal transmission and level conversion circuit and a PWM hardware interlocking circuit. When a three-state buffer is used for transmitting PWM signals, when a hardware wave sealing fault is triggered to block outer tube output through an outer tube PWM signal three-state buffer enabling pin, the outer tube output PWM output state is changed into a high-resistance state, although a pull-down resistor can pull down an output level, the impedance of the pull-down resistor is large, and the output level can be lowered. The problem that the time-delay turn-off sequential logic of the inner tube of the FPGA cannot be effectively executed due to the fact that an inner tube PWM signal which is originally subjected to time-delay turn-off cannot be switched on at the primary side of a driving optocoupler and is forcibly turned off is solved.
Owner:SUZHOU HUACHU ELECTRICAL TECH CO LTD

Automatic coordinated regulation system for production process of discrete manufacturing industry

ActiveCN121995774AAdaptive controlDynamic impedanceLinear amplification
The invention relates to the technical field of discrete manufacturing industry production process control, and discloses an automatic collaborative regulation system for a discrete manufacturing industry production process, which comprises a node control unit distributed at a process node and a collaborative control resolving unit, the cooperative control calculation unit converts the node operation rhythm into a time axis distribution parameter in a sequential logic correlation model, calculates a target adjustment vector based on the parameter, and superposes a compensation pulse at the output leading edge of the target adjustment vector by using a feed-forward shaping mechanism, so that an adjustment signal breaks through a physical execution dead zone of a bottom-layer driving execution unit, and the control of the bottom-layer driving execution unit is realized. According to the method, through signal shaping and smoothing of the dynamic impedance difference between the ideal control law and the mechanical actuator, the non-lagging response to extremely fine disturbance is realized, the non-linear amplification of errors in a rigid time sequence frame is blocked, and the stable convergence of a control loop is ensured.
Owner:ZHEJIANG XINGDAXUN SOFTWARE CO LTD

Automatic time sequence control method for aging test of display

The invention discloses an automatic time sequence control method for a display aging test, and relates to the technical field of display detection, and the method comprises the steps: obtaining a failure mode of a display; calling a corresponding time sequence branch from a preset time sequence branch library based on the failure mode, wherein the time sequence branch library comprises exclusive time sequences designed for different failure modes; executing a time sequence branch to perform an aging test on the display; and when coexistence of multiple failure modes is detected, logic switching of the time sequence branches is determined based on a preset priority. The method comprises the following steps: acquiring failure modes of a display, calling a corresponding exclusive time sequence from a preset time sequence branch library to execute an aging test, and switching the time sequence based on priority logic when multiple failure modes coexist; according to the method, an exclusive time sequence branch is designed on the basis of failure mode mechanism difference, the existing single time sequence logic is broken through, one failure mode corresponds to one set of precise adaptive time sequence, and the problems that in the prior art, target defects are not detected, and non-target defects are aggravated are fundamentally solved.
Owner:深圳市中智云科技有限公司

All-digital verification method for motor control system

The invention discloses an all-digital verification method for a motor control system. The verification method comprises the following steps: S1, defining a verification object and control core parameters; s2, constructing a high-granularity processor digital model; s3, a DSP software operation environment is built, and DSP program zero-modification direct application is achieved; s4, designing to realize the universality and expansibility of the model, supporting the development and debugging of multiple types of DSP programs, and adapting to different control systems; s5, establishing real-time data interaction and system closed-loop control simulation; and S6, running the simulation system to carry out multi-dimensional function verification, and realizing automatic testing, limit testing and result output of the DSP program. According to the method, the zero-modification direct application and convenient development of the DSP program of the motor control system are realized, the pain points of traditional hardware tests such as complex program algorithm verification, sequential logic guarantee, limit scene test and the like are solved through the flexibility and the safety of a full-digital environment, and an efficient development closed loop is really formed.
Owner:ZHEJIANG DIJIE SOFTWARE TECH CO LTD

Oil discharge eight-step method automatic supervision method fusing target detection and sequential logic

The invention relates to an oil discharge eight-step method automatic supervision method fusing target detection and sequential logic. The method comprises the following steps: carrying out video monitoring on an oil discharge area of a gas station; collecting an oil unloading operation image when oil unloading operation is carried out in an oil unloading area of the gas station; and constructing an oil discharge eight-step method identification network and the like. According to the method, through the steps of installing the camera, collecting the oil unloading operation image and the like, an oil unloading eight-step method recognition network and cascade trigger type state machine logic are constructed, non-contact intelligent sensing of the whole process of oil unloading operation and real-time blocking of illegal behaviors are achieved, traditional civil air defense supervision is converted into standardized technical defense management and control, and the safety of the whole process of oil unloading operation is improved. Therefore, the intrinsic safety level of a petrochemical industry retail link is remarkably improved. The technical problems that in the prior art, a manual supervision mode has space-time blind areas and subjective hysteresis, a traditional universal vision algorithm is low in recognition precision on tiny key components such as an electrostatic grounding clamp, and rigid control over strict sequential logic of an operation process is lacked can be solved.
Owner:JIANGXI EXPRESSWAY PETROCHEMICAL CO LTD