41 results about "Usual control" patented technology

The invention is suitable for the technical field of power electronics and power transmission, and provides a low voltage ride-through control method and system for a network construction type converter, and the method comprises the steps: carrying out the conventional VSG control according to a VSG control strategy, and continuously monitoring the difference between the voltage of a power grid and a set reference value, so as to judge whether a fault occurs or not; when it is detected that the power grid breaks down, homodyne control is carried out on an active power control ring and a reactive power control ring of the grid-forming type converter so as to fix the phase and the amplitude of the output voltage of the converter; calculating and injecting a positive sequence compensation voltage and a negative sequence compensation voltage according to the drop degree of the power grid voltage; and according to the predicted impact current value, dynamically calculating and inputting adaptive virtual impedance. The power angle and the voltage in the fault period can be ensured to be stable, transient overcurrent is effectively restrained, and large power fluctuation is not caused.

The present application relates to the technical field of smart water and process control, and particularly relates to a double closed loop coagulant intelligent dosing system for waterworks and a control method thereof. The double closed loop intelligent dosing system comprises a multi-modal perception network, an edge intelligent controller, a cloud edge system optimization platform, and a safety execution and alarm unit. The control method thereof is also disclosed. When the model credibility index is higher than a set threshold, model predictive control is adopted. When the index is lower than the threshold, the control is switched to a conventional control scheme. In order to improve the automatic disposal capability for abnormal working conditions, an event-driven closed loop control is set. For abnormal working conditions beyond the conventional working conditions, the abnormal working condition disposal rule control is switched, so as to form a double closed loop system architecture. The control efficiency of the coagulant intelligent dosing system under normal working conditions can be effectively improved, and the abnormal working conditions can be effectively disposed. The problem of model failure caused by abnormal water inflow and other reasons, which leads to a sharp decline in system performance, can be avoided.

The application discloses an integrated control system, which comprises a conventional control system and a safety protection system arranged on a local rack and N remote IO racks. The conventional control system is connected with an upper computer and comprises a conventional logic control unit, a first conventional communication interface module connected with the conventional logic control unit, N second conventional communication interface modules connected with the first conventional communication interface module, and N conventional IO modules connected with the second conventional communication interface modules; the safety protection system comprises a safety logic control unit connected with the conventional logic control unit, a first safety communication interface module connected with the safety logic control unit, N second safety communication interface modules connected with the first safety communication interface module, and N safety IO modules connected with the second safety communication interface modules. The scheme provides an integrated design scheme of the conventional control system and the safety protection system, so that the overall design cost of the integrated control system is reduced.

The utility model provides a water spraying amount control system for a primary high-temperature flue gas spray cooling tower of an electric furnace, relates to the technical field of flue gas purification of the electric furnace, and aims to solve the problem that most of existing projects use a conventional control method for adjusting the water spraying amount according to a single temperature value of an outlet of the spray cooling tower. The problems of slow water spraying reaction (water spraying hysteresis), inaccurate temperature value caused by local supercooling or superheating due to non-uniform flue gas distribution, large temperature fluctuation of an outlet of a spray tower, serious scaling and hardening of smoke dust in the spray tower and a tower outlet pipeline, and increase of use and maintenance cost generally exist in the prior art, including a combustion settling chamber, a combustion chamber, a combustion chamber and a combustion chamber. A flue gas inlet dust removal pipeline is installed at the top of the left side of the combustion settling chamber, a steel structure stand column is installed at the top of the right side of the combustion settling chamber, and a cooling tower is installed on the steel structure stand column through a supporting base.

The application discloses an active damper control method based on oscillation risk assessment, and relates to the technical field of new energy power generation systems.The control method comprises four parts: an inverter conventional control part, an oscillation risk assessment part, a stability margin improvement part and an oscillation monitoring and instability recovery control part.The inverter conventional control part is the basis of the active damper control and runs through the whole control stage, and the other three control parts cyclically act in sequence to ensure the stable operation of the inverter system, assess the oscillation risk of the system through current relation, and thus do not need voltage information, thereby reducing the calculation burden of the controller, improving the stability margin of the system before the system is unstable, and improving the stability margin to a set value.

The invention relates to the technical field of charging piles, and discloses a power module fan rotating speed adjusting method based on fuzzy PID control, and the method comprises the steps: obtaining an air inlet temperature fuzzy value according to a preset air inlet temperature given value and a plurality of detected air inlet temperature real-time values of a power module; quantizing the air inlet temperature fuzzy values to the corresponding fuzzy domains so as to respectively calculate the membership degrees of the air inlet temperature fuzzy values in the respective corresponding fuzzy domains; and determining an incremental proportion coefficient real-time adjusting quantity, an incremental integral coefficient real-time adjusting quantity and an incremental differential coefficient real-time adjusting quantity in an incremental PID control scene according to each membership degree, so as to determine a fan rotating speed adjusting quantity of the power module based on the above. According to the method, the fuzzy PID control mode is combined on the basis of conventional PID control, the influence of internal and external factors on fan conversion control can be effectively reduced, the control precision of the fan rotating speed of the power module is improved, and the fan operation stability of the power module is further improved.

Conventional control schemes for electrolyzers focus on maximizing electrical efficiency, which describes the relationship between the electrical energy consumed and the gas produced by the electrolyzer. However, the cost associated with high electrical efficiency may be unnecessarily expensive. In one embodiment presented herein, a model is used to determine the cost (or profit) associated with a gas produced by the electrolyzer at each of a plurality of operating conditions. The control system can select the operating condition to use based on which operating condition is associated with the lowest cost (or highest profit), even though that operating condition may not be associated with the highest electrical efficiency.

This invention discloses an electronic expansion valve control method, device, and air conditioning system. The method includes: detecting a change in the on / off state of an indoor unit; for each on-duty indoor unit, determining the degree of lag in indoor unit control based on changes in system operating load and changes in specified parameters when the system load changes; adjusting the control cycle of the indoor electronic expansion valve of that indoor unit according to the lag degree; and controlling the indoor electronic expansion valve of that indoor unit according to the adjusted control cycle. This invention improves the response speed of the indoor electronic expansion valve under system fluctuations, increases the response rate of the indoor unit, avoids the situation where slow adjustment according to the conventional control cycle leads to large indoor temperature fluctuations and reduced indoor comfort, achieves effective regulation of the indoor electronic expansion valve, and solves the problem of slow response of the indoor electronic expansion valve under system fluctuations.

The present application belongs to the technical field of metal material processing control, and particularly relates to a self-adaptive tension regulation method for mirror surface aluminum foil precision forming, comprising the following steps: S1, obtaining full-element working condition data in the mirror surface aluminum foil forming process, the full-element working condition data comprising a feedback tension value, a linear speed and a driving speed of a main driving motor; S2, evaluating a stability confidence index according to the feedback tension value and the linear speed, and distinguishing whether the tension deviation belongs to systematic error or random interference through the stability confidence index; S3, dynamically mapping bandwidth sensitivity based on the stability confidence index and the driving speed. The present application can effectively eliminate high-frequency noise interference, significantly reduce tension fluctuation between multi-stage roller systems, solve the stress wrinkle problem in ultra-thin aluminum foil forming, eliminate overshoot and reciprocating swing in conventional control, and improve mirror surface flatness.

The invention discloses a low-speed and high-precision tracking control method for an unmanned ship, and the method comprises the steps: carrying out the parameter equation expression of a task planning path of the unmanned ship, and selecting a projection point of the unmanned ship on the path based on the path; the curvature and the position deviation are calculated according to the selected projection points, and the foresight distance of the unmanned ship in the track path is selected according to the curvature and the position deviation; coordinates of a guide point are obtained according to the projection point and the foresight distance, and an expected heading value is obtained through calculation; and calculating a navigational speed course control rate and a navigational speed control rate according to the expected navigational speed value and the expected navigational speed, and realizing tracking control of the unmanned ship based on the control rates. Through the designed tracking control method, the navigational speed course control rate and the heading control rate are obtained through calculation, tracking control over the unmanned ship is achieved based on the course control rate and the heading control rate, high-precision tracking control over the unmanned ship in the low-speed state can be achieved, and the unmanned ship tracking control precision is improved. Task requirements of unconventional control scenes such as autonomous navigation in narrow and complex water areas and autonomous berthing in wharf areas are met.

The application discloses a kind of air pump control method and electronic sphygmomanometer of electronic sphygmomanometer, air pump control method includes steps S1, the battery load voltage when air pump idling is measured, and load voltage is divided into several segments;Step S2, the air pressure in cuff is measured;Step S3, in low pressure section, calculate inflation rate with first frequency and use PID control algorithm to adjust inflation rate;Step S4, in high pressure section, calculate inflation rate with second frequency and use PID control algorithm to adjust inflation rate;Step S5, when the pulse feature extracted from air pressure signal meets the requirement of calculating blood pressure, end measurement and display result;Through the above structure, the problem that conventional PID control algorithm converges slowly when controlling air pump inflation can be solved, and the same cuff can make air pressure rise at a relatively stable rate under different wearing tightness, and the requirement of hardware configuration is lower.

Provided is a control device for an internal combustion engine that suppresses an excessive decrease in the temperature of the top surface of a piston by means of incremental control in which the injection amount is greater than that of conventional control for oil control. The control device controls oil control based on the oil injector. When the water content is equal to or greater than a first threshold (S13: YES) and the piston temperature is equal to or greater than a first temperature (S14: YES) and the fuel rate is equal to or greater than a second threshold (S16: YES) and the piston temperature is equal to or greater than a second temperature (S17: YES), the control device performs incremental control of the oil control in step S15 if the specific control is not being executed (S11: YES). When the specific control is being executed (S11: YES), the control device does not perform the increment control of the oil control regardless of the moisture content and the fuel rate.

The invention discloses a steering stability control method and device for an electric control handle of a loading machine, and belongs to the technical field of engineering machine.The control method comprises the steps that in response to an obtained steering signal of the electric control handle, the rotating speed of a steering gear pump and the rotating angle of a whole vehicle angle sensor are obtained; calculating a dynamic deceleration interval according to the rotating speed, and judging whether the rotating angle is in the dynamic deceleration interval or not; and if the rotating angle is within the dynamic deceleration interval, steering buffer control is carried out according to the rotating angle, and otherwise, conventional steering control is carried out according to the steering signal. Meanwhile, the signal end and the execution end of the control method are both subjected to two-way redundancy setting. The invention can effectively solve the problems of small steering interval of the handle, limit impact, signal failure in severe environment and the like, and improves the steering safety and comfort of the loader.

The embodiment of the invention provides a method and device for coordinating sideslip of an aircraft through a control law, computer equipment and a medium, and the method comprises the following steps: setting an activation condition and an exit condition, continuously monitoring sideslip angle data in flight data through an aircraft sensor, and activating an operation for coordinating sideslip of the aircraft; the method comprises the following steps: determining a coordinated sideslip gain of a rudder according to flight data collected by an aircraft sensor, determining a rudder control instruction according to the coordinated sideslip gain of the rudder, and controlling the motion of the rudder of an aircraft based on the rudder control instruction; the coordinated sideslip gain of the aileron is determined, an aileron control instruction is determined according to the coordinated sideslip gain of the aileron, the aileron is controlled to deflect through the aileron control instruction, and the roll angle is corrected; and after a quit condition is met, quitting the operation of coordinating sideslip of the airplane, and controlling the airplane through a conventional control law. According to the scheme, by outputting the rudder and aileron control instruction for coordinating sideslip, the flight safety is improved.

This invention provides a technology that improves the work efficiency of operators in a vehicle production line. In a vehicle control device, a control switching unit switches between conventional control and production line control. A determination unit determines whether to perform opening and closing control on the opening and closing device of the vehicle according to a first opening and closing condition in conventional control, and whether to perform opening and closing control on the opening and closing device according to a second opening and closing condition in production line control. The control unit performs opening and closing control on the opening and closing device based on the determination result of the determination unit. The first opening and closing condition includes conditions related to vehicle control signals where communication is stopped during software writing of the vehicle's electronic control devices. The second opening and closing condition does not include conditions related to vehicle control signals.

The embodiment of the invention provides a dew point control method, which comprises the following steps of: after an actual dew point of input gas is obtained, when the actual dew point is smaller than an alarm dew point and larger than a reference dew point, inquiring a fuzzy rule based on a deviation parameter, determining a value range of an adjusting parameter, and determining the value range of the adjusting parameter based on the value range of the adjusting parameter. The actual value of the adjusting parameter is determined, and the pressure controller is adjusted based on the actual value of the adjusting parameter to adjust the air pressure of the input gas, so that the actual dew point approaches the reference dew point. Thus, in the process of adjusting the pressure of the input gas by adjusting the pressure controller, the value range of the adjusting parameters is determined through the fuzzy rule, the problem that overshoot or oscillation is likely to occur in the conventional control technology is avoided, the actual dew point of the gas is controlled to be close to the reference dew point, and the control accuracy is improved. And the condensation phenomenon caused by the fact that the actual dew point exceeds the alarm dew point is avoided.

The invention relates to the technical field of inverter control, and discloses an optical storage system energy damping cooperative control method comprising a conventional control mode and a damping control mode. In the conventional control mode, the energy storage inverter adopts capacitance current feedback active damping control, and normal charging and discharging and power smoothing can be realized; in the damping control mode, the inverter introduces an impedance adaptive branch, extracts a common coupling point harmonic voltage through a wave trap, generates a harmonic current instruction through a virtual resistor, and converges the harmonic current instruction into a current reference end, thereby shaping output impedance and enhancing system damping. According to the method, the number of the energy storage inverters in the damping mode can be dynamically adjusted according to the stability state of the power grid, and flexible configuration of the damping capacity is achieved. According to the method provided by the invention, oscillation can be effectively suppressed under different power grid impedance conditions, the system stability is improved, additional hardware equipment is not needed, and safe, stable and economic operation of the optical storage system is considered.

The present application relates to the technical field of vehicle control, and discloses a VCU torque control system based on multi-sensor fusion, which comprises a system monitoring and fault diagnosis module, a data acquisition and preprocessing module, and a control decision-making module.The system monitoring and fault diagnosis module is used for generating a sensor failure flag when diagnosing that a yaw rate sensor fails.The data acquisition and preprocessing module is used for receiving the sensor failure flag generated by the system monitoring and fault diagnosis module, and collecting real-time data of a healthy sensor, and then generating a real-time feature vector.The fusion scheme of a Gaussian process regression state observer and a random model predictive controller is adopted, state perception uncertainty information is transmitted to the control decision-making layer, and the problem that when a deterministic state observer and a conventional controller are cascaded in the prior art, the controller cannot perceive the quality of upstream state estimation, and when the estimation is inaccurate, the system is unstable or the performance is reduced due to over-actuation control.

1. The name of the design product: motor drive control graphical user interface for electronic equipment. 2. The use of the design product: for an electronic device. 3. The design points of the design product: the content of the graphical user interface. 4. The picture or photo that best indicates the design points: design 1 front view. 5. The use of the graphical user interface: the present graphical user interface is used for motor drive control. The present application contains five similar designs, and their interaction logic is as follows: (1) Design 1 front view shows the operation main interface of the motor drive control system, click "basic information" in design 1 front view, the interface switches to design 1 interface change state diagram; (2) Design 2 front view is the same as design 1, click "general control parameters" in design 2 front view, the interface switches to design 2 interface change state diagram; (3) Design 3 front view is the same as design 1, click "control port setting" in design 3 front view, the interface switches to design 3 interface change state diagram; (4) Design 4 front view is the same as design 1, click "pump protection setting" in design 4 front view, the interface switches to design 4 interface change state diagram; (5) Design 5 front view is the same as design 1, click "parameter monitoring" in design 5 front view, the interface switches to design 5 interface change state diagram. 6. Design 1 is designated as the basic design.

The invention relates to the technical field of industrial process data acquisition, in particular to an industrial process data acquisition method and system based on a PLC. Comprising the steps that a PLC performs high-frequency sampling on an input signal at a data updating frequency higher than a conventional control period and writes the input signal into a circular buffer for rolling storage; continuously monitoring a process state, and triggering data aggregation when a preset process event is identified; extracting event-related high-frequency data from the buffer area, acquiring conventional process data, performing structured integration to form a composite data frame, and injecting a uniform time stamp; and the data frame is sent to a data acquisition gateway, and the gateway analyzes the data frame according to a preset structure, processes the data frame according to a format and uploads the data frame to an upper analysis system. The problem that key dynamic information is difficult to effectively utilize when an existing PLC system meets complex data acquisition requirements is solved.

The application discloses a kind of power control systems based on new energy conventional control and spot clearing control, including data receiving module, multi-time scale coordination module, conventional control module, spot clearing control module, judging module and switching execution module;The application fuses day-ahead, intraday market clearing result and real-time dispatching instruction by multi-time scale coordination module, identifies the conflict of scheduling and market;Spot clearing control module adopts two-stage distribution logic, the first stage is carried out bus level optimization distribution with node marginal price as target, the second stage introduces health degree coefficient to carry out unit level weighted distribution;Judging module realizes the intelligent switching of conventional control and spot clearing control based on output balance index combined with hysteresis comparison threshold, embeds market value signal into the whole process of power control, while ensuring the execution of power grid dispatching instruction, realizes the maximization of economic benefit of station and the balanced management of equipment health degree, with high market adaptability and operation stability.

This invention discloses an integrated controller for a composite robot, comprising a main control unit integrated on the same hardware platform and an independent heterogeneous safety module. The main control unit runs on a processor with real-time scheduling capabilities and is used to integrate the perception, planning, and control logic of the robotic arm and chassis. The heterogeneous safety module uses a processor with a different architecture than the main control unit and is used to independently perform safety monitoring and protection functions. The main control unit and the heterogeneous safety module achieve data interaction through physically isolated communication links, and the safety control logic is deployed separately from the conventional control logic, thereby improving the safety response capability, task collaboration efficiency, and system robustness of the composite robot in complex industrial environments.

The application discloses a kind of active suspension system roll control method, device and vehicle, by obtaining real-time lateral acceleration signal, when signal exceeds preset threshold range and duration reaches first time threshold, it is judged to enter functional safety state, and lock current active force target value as fixed output, maintain suspension state;When signal falls back to threshold range and duration reaches second time threshold, it is judged to exit functional safety state, and switch back to the conventional control mode of calculating active force target according to real-time signal.The application introduces "threshold+time" dual determination mechanism, effectively suppresses sensor noise interference, avoids frequent false triggering of functional safety state;Simultaneously by locking active force target, realize the functional safety requirement of "stop adjusting, maintain present situation", eliminate control mutation.The application improves the driving stability and ride comfort under extreme conditions of vehicle under the premise of meeting functional safety requirements.

The application belongs to the technical field of gas stove control, and discloses a control device and a control method of a gas stove thermocouple double-coil electromagnetic valve. The control device comprises a thermocouple, a double-coil electromagnetic valve, a battery pack, a control module and a direct current conversion module. When a monitoring signal of the gas stove is detected, a first control signal is output to the direct current conversion module, so that the direct current conversion module performs voltage reduction processing on a first electric signal output by the battery pack. Then, a second control signal is output to the control module, so that the control module performs potential processing on the first electric signal, and performs valve control processing according to a second electric signal received by a main coil and the first electric signal. Compared with a conventional control mode, the additional power consumption of the battery pack can be effectively reduced, and since the load consumption of a secondary coil is low, the double-coil electromagnetic valve can also avoid valve closing failure when the battery pack has low power, thereby prolonging the service life of the battery and ensuring the use experience of the gas stove.

The invention discloses a bearing chamber with an oil storage cavity, relates to the technical field of bearing chambers, solves the problems that an existing unit is short of oil during starting and working conditions are difficult to pre-judge in conventional control, and provides the bearing chamber with the oil storage cavity, which does not need complex pre-judgment. On the basis of traditional main oil inlet, oil return and bearing seat holes, an oil storage cavity, a bypass oil way, a controlled valve, a lower oil inlet way, an exhaust pipeline and an exhaust valve are additionally arranged. The lower oil inlet path is communicated with the bottom of the oil storage cavity and the bearing seat hole, and the exhaust pipeline is communicated with the top of the oil storage cavity and the exhaust valve. When the unit runs, the controlled valve is opened, and the oil storage cavity is filled with lubricating oil; during shutdown, the valve is closed, the oil storage cavity supplies oil through gravity, and the exhaust valve balances air pressure. The device can solve starting oil shortage, prevents oil leakage, is suitable for various units, is reliable in structure, prolongs the service life of the bearing, and is low in popularization cost.

The invention discloses an industrial automation control system based on a behavior tree and a resource abstraction layer, and belongs to the technical field of industrial automation control, and the system comprises a behavior tree layer which is used for configuring industrial automation control logic through graphical nodes; the resource abstraction layer is used for abstracting different models of resources in the same category into controllable uniform resource objects and providing a uniform control interface irrelevant to the specific models of the resources for the behavior tree layer; the resource layer is used for receiving the control instruction issued from the resource abstraction layer and feeding back state information after executing the control instruction; wherein the behavior tree layer realizes model-independent control of resources in the resource layer by calling a uniform control interface provided by the resource abstraction layer, so that the problems of poor logic expansibility, insufficient motion control precision, software tool closing, high logic coupling degree, complex development and debugging and low development efficiency existing in a conventional control scheme are solved; and the development and maintenance cost is reduced while high performance and flexibility are maintained.

A nuclear reactor, such as particularly a small or micro nuclear reactor, implementing an arrangement of diverse and redundant control and safety systems that eliminates the need for the conventional control rod system, replacing it with simpler, more streamlined safety mechanisms. Specifically, the control and safety system of the invention is characterized by high diversity and redundancy, wherein multiple systems are employed for reactivity control, in which the system include at least two, preferably at least three of the following systems Control absorbing plate system; Moderator block with layered absorbing material system; Absorbing cylinder system; and Gaseous absorber injection system.

The application discloses a kind of based on multi-dimensional historical error compensation and multi-parameter intelligent optimization phase-locked loop control method.The control method is based on conventional synchronous rotating coordinate system phase-locked loop (SRF-PLL), introduces digital shift register to build high-order dynamic memory chain, to store the phase angle error of past multiple times, and it is respectively multiplied by the output end of the conventional PI controller after optimization compensation coefficient is added to.On this basis, the method uses response-driven particle swarm optimization algorithm, through the data interaction between main program and electromagnetic transient simulation software, the joint optimization of multidimensional control parameters is carried out.Because it is unnecessary to change the basic steady-state characteristics of original system or substantially increase hardware calculation cost, the method breaks the restriction that traditional phase-locked loop dynamic response speed and steady-state anti-interference ability cannot be considered, can effectively speed up the convergence speed under the condition of phase angle and frequency mutation, and significantly improve the filtering ability to wide frequency characteristic harmonic, has very high engineering application value.

This invention relates to the field of gas-fired combined cycle units, addressing the problems of conventional control systems, such as a single bypass system mode, insufficient inter-module linkage, and significant fuel consumption and working fluid loss during start-up and shutdown. Specifically, it relates to a fully automated start-up and shutdown system and control method for gas-fired combined cycle units. This invention constructs an integrated start-up and shutdown control architecture encompassing the boiler, turbine, and electrical systems, providing six different control modes for the high and medium-pressure bypass valves of the turbine. This achieves fully automatic pressure matching from boiler steam generation to turbine startup, significantly improving the automation level and operational safety of the start-up and shutdown process. Furthermore, it utilizes sequential control logic to complete the water injection and automatic startup of the closed-loop water system, shortening system preparation and startup time. During shutdown, multiple breakpoint designs effectively prevent water hammer in the turbine, mitigate steam drum deformation caused by excessive temperature differences between the upper and lower walls of the high / medium / low-pressure steam drum, and shorten the response time for the next startup.

The present application relates to the technical field of geotechnical engineering and underground engineering construction control, in particular to a torque-depth double closed-loop adaptive control method and system for just-in-place solidification, which synchronously acquires just-in-place solidification process data and existing tunnel response data in a preset sampling period in just-in-place solidification construction; generates and updates target depth trajectory and target stirring torque range of each depth section; executes depth closed-loop control and torque closed-loop control under the constraint, and calculates and fuses to form a comprehensive disturbance risk index within a data window; when the borehole pressure or the comprehensive disturbance risk index exceeds the threshold value to determine high risk and switches to the anti-heave control mode to inhibit adjustment, falls back to exit and returns to the normal control mode to continue construction, the just-in-place solidification process data and the existing tunnel response data are synchronously collected, the depth / torque double closed-loop control is executed, the comprehensive disturbance risk index is fused in a windowed manner, the anti-heave control mode is switched to inhibit adjustment when the threshold value is exceeded, and the anti-heave control mode is restored after falling back.