274 results about "Linear control" patented technology

The invention discloses a wind power operation and maintenance ship embarkation system compensation control method based on active disturbance rejection control and related equipment. The method comprises the following steps: predicting a system external wave disturbance variable of a six-degree-of-freedom embarkation compensation platform according to environmental parameters through a wave disturbance prediction model; the total disturbance quantity in the system is predicted through the extended state observer according to the real-time attitude information and the electric cylinder control signal, and then the total disturbance of the system is obtained; a nonlinear control quantity is calculated through an active disturbance rejection controller according to real-time attitude information, expected attitude information and a preset decoupling matrix, a feed-forward compensation quantity is calculated according to total disturbance of a system, then an output instruction of the controller is calculated, and compensation control is achieved. According to the embodiment of the invention, compensation control can be realized through the wave interference prediction model, the state expansion observer and the active disturbance rejection controller, and high precision and response speed are achieved. The method can be widely applied to the technical field of automation control.

The invention provides a non-linear flight control method and system for an anti-wind disturbance unmanned aerial vehicle. The method comprises the following steps: acquiring wind field disturbance characteristics in real time by using a preset meteorological radar; inputting the wind field disturbance characteristics into a preset aerodynamic disturbance prediction model to generate an aerodynamic torque fluctuation prediction value; preset dynamic filtering processing is applied to the amplitude characteristic of the aerodynamic torque fluctuation predicted value so as to generate a control instruction correction signal; and the control instruction correction signal is coupled with a preset nonlinear control law of an unmanned aerial vehicle flight control system, so that unmanned aerial vehicle attitude offset caused by wind disturbance is inhibited in real time, and unmanned aerial vehicle nonlinear flight control is carried out. According to the method, the composite defect of hysteresis and filtering mismatch of traditional linear control in a strong wind sudden change scene is overcome, stable attitude control of the unmanned aerial vehicle in low-altitude wind shear and gust sudden attack is realized, the anti-interference response speed of the unmanned aerial vehicle is remarkably improved, and the out-of-control risk of the unmanned aerial vehicle is greatly reduced.

The invention discloses a switching control method based on SPWM soft start and a pulse type load LLC resonant converter. The converter mainly comprises an LLC resonant converter, an H-bridge inverter circuit and a load of the H-bridge inverter circuit, and the control method comprises the following steps: setting k-level SPWM modulation in a starting stage to realize smooth soft start of output voltage (k is any positive integer); the load state is accurately judged through an H-bridge switching logic unit, and Burst intermittent control and linear frequency control are adopted for no-load and full-load in a steady state respectively; during load switching, a nonlinear SOTC optimal trajectory controller is adopted to perform two-pulse optimal control, so that the state is transited to a new mode along the shortest trajectory, and a dynamic response optimizer is introduced to compensate the switched frequency according to the state radius error so as to suppress secondary voltage fluctuation. The problems of slow dynamic response, large output voltage fluctuation and the like when traditional linear control faces a pulse type load LLC resonant converter are solved, and the stability and the anti-interference capability of the output voltage of the system are improved.

The invention relates to a primary frequency modulation control method for a pumped storage coupled compressed air energy storage system, and the method comprises the steps: building a frequency modulation control model based on the core component information and operation constraints of the pumped storage coupled compressed air energy storage frequency modulation system, building a state space model, and building a discretization state equation, establishing a comprehensive optimization model by taking the minimum power grid frequency deviation and the system operation cost as targets; and establishing a multi-parameter planning model based on the reservoir level, the gas storage pressure, the frequency deviation and the comprehensive optimization model, and converting a hierarchical model prediction control problem into multi-parameter quadratic programming to form a self-healing frequency modulation strategy to perform power output tracking control. Therefore, the problem that the frequency modulation performance is limited due to the fact that a water pressure system and an air pressure system in the hybrid power station are complex in coupling and large in response difference, and a related linear control strategy or a single control framework is difficult to achieve rapid response and accurate coordination of the hybrid system in the primary frequency modulation process is solved.

The invention discloses a method for setting and controlling a buckle cable adjustment threshold value in large-span arch bridge hoisting construction, which comprises the following steps of: acquiring construction parameters of a current buckle section, and acquiring a corresponding cable adjustment target value; constructing a structural mechanics finite element model of the target buckle cable based on the construction parameters, and introducing a buckle cable multi-harness nonlinear stress mechanism into the model to calculate upper and lower limit thresholds of cable force in the tensioning process; determining an elevation adjustment threshold according to the target axis, the target elevation, the accumulated deviation and the pre-deformation compensation amount in combination with a geometric linear control model; and generating an environmental influence correction coefficient by utilizing construction environmental parameters, and dynamically correcting the cable force and the elevation threshold value to realize real-time updating of the threshold value in the hoisting process. According to the method, the problems of nonlinearity of multiple wire harnesses of the large-span arch bridge buckle cable, high linear sensitivity of the arch rib, remarkable environmental influence and the like are solved, high-precision cooperation of cable force control and linear control is realized, and the safety, controllability and construction efficiency of hoisting construction are improved.

The invention discloses a walking hanging basket linear control method and system based on visual feedback and application equipment, and relates to the technical field of hanging basket walking monitoring, and the method comprises the steps: obtaining the structural design information of a hanging basket, and obtaining the design information of a construction bridge body; according to the construction bridge body design information, walking route information of the hanging basket structure is formulated in advance; according to the construction bridge body design information, at least one image capturing area is arranged in the direction of the construction bridge body, and the image capturing area is used for collecting the connection state of the construction bridge body and the hanging basket structure. According to the construction real-time connection state of the hanging basket structure and the bridge body, the adjustment amount of the hanging basket structure and the bridge body can be determined; in addition, according to the scheme, the adjustment basis is quite scientific and effective, and the method does not depend on the professional level and adjustment experience of workers singly. The defect that in the prior art, the process for adjusting the position of a traditional hanging basket structure is complex and high in difficulty is effectively overcome.

The invention relates to the technical field of bridge construction, in particular to a bridge super-long stay cable penetrating construction method, which comprises the following steps of: presetting a monitoring point position at a super-long stay cable, installing a tilt angle sensor to obtain pitch and roll angles of a segment, and fixing a tension sensor to measure initial tension at a cable end. A pitch angle, a roll angle, a three-dimensional coordinate and initial tension data are collected in real time at a preset point position of the stay cable, a dynamic response cable body attitude and stress model is constructed in combination with a designed linear control point and an anchoring point space coordinate, traction force distribution and traction point position combination are optimized, synchronous or asynchronous cooperative loading of multiple traction forces is achieved, and the traction force distribution and the traction point position combination are optimized. And in the cable penetrating process, cable body posture control and mechanical response balance are kept. Sensing data and a target parameter interval are continuously compared, a stress closed-loop control mechanism is formed by adjusting a traction force value and a loading rate in real time, and the risks of stress concentration and linear deviation expansion are avoided.

A system and method in a building or vehicle for an actuator operation in response to a sensor according to a control logic, the system comprising a router or a gateway communicating with a device associated with the sensor and a device associated with the actuator over in-building or in-vehicle networks, and an external Internet-connected control server associated with the control logic implementing a PID closed linear control loop and communicating with the router over external network for controlling the in-building or in-vehicle phenomenon. The sensor may be a microphone or a camera, and the system may include voice or image processing as part of the control logic. A redundancy is used by using multiple sensors or actuators, or by using multiple data paths over the building or vehicle internal or external communication. The networks may be wired or wireless, and may be BAN, PAN, LAN, WAN, or home networks.

The invention discloses a two-way output consistency control method for a heterogeneous multi-agent system, and the method comprises the following steps: 1, constructing state and output equations of a follower agent and a leader agent, calculating an output tracking error ei (k), and constructing an augmented system state space model and a linear control input ui (k); 2, designing a distributed bipartite observer for each follower agent to enable an output tracking error ei (k) to be zero all the time, and replacing a leader agent state of the augmented system state space model with a state of the distributed bipartite observer; 3, defining a Q function, solving the Q function to obtain an optimal control strategy, and introducing a Q-learning algorithm to obtain an optimal control gain only depending on an input state of the augmented system state space model; 4, introducing a fuzzy logic system approximation Q function to enable a matrix phi i to meet a full-rank condition, and updating a fuzzy weight by minimizing a Bellman residual error to obtain an optimal control gain of the input state of the augmented system state space model; and updating the control gain by adopting a gradient descent method, and calculating linear control input ui (k) by utilizing the updated control gain.

A system and method in a building or vehicle for an actuator operation in response to a sensor according to a control logic, the system comprising a router or a gateway communicating with a device associated with the sensor and a device associated with the actuator over in-building or in-vehicle networks, and an external Internet-connected control server associated with the control logic implementing a PID closed linear control loop and communicating with the router over external network for controlling the in-building or in-vehicle phenomenon. The sensor may be a microphone or a camera, and the system may include voice or image processing as part of the control logic. A redundancy is used by using multiple sensors or actuators, or by using multiple data paths over the building or vehicle internal or external communication. The networks may be wired or wireless, and may be BAN, PAN, LAN, WAN, or home networks.

A system and method in a building or vehicle for an actuator operation in response to a sensor according to a control logic, the system comprising a router or a gateway communicating with a device associated with the sensor and a device associated with the actuator over in-building or in-vehicle networks, and an external Internet-connected control server associated with the control logic implementing a PID closed linear control loop and communicating with the router over external network for controlling the in-building or in-vehicle phenomenon. The sensor may be a microphone or a camera, and the system may include voice or image processing as part of the control logic. A redundancy is used by using multiple sensors or actuators, or by using multiple data paths over the building or vehicle internal or external communication. The networks may be wired or wireless, and may be BAN, PAN, LAN, WAN, or home networks.

The invention belongs to the technical field of process control, and discloses a high-speed rail large-span continuous beam linear whole-process control method. Comprising the following steps: collecting continuous beam structure parameter data in real time and cleaning the data to obtain continuous beam construction data; elevation fluctuation interference identification is carried out, and an elevation difference mutation area is output; performing leveling control based on the height difference abrupt change area to obtain leveling correction data; performing stress interference correction to obtain disturbance correction linear data; tensioning plan information is obtained in real time, tensioning offset correction is conducted on the tensioning plan information, and tensioning correction parameter data are generated; construction climate data are collected, tensioning control calibration is carried out on the tensioning correction parameter data, and calibration control stress data are output; zero offset compensation is executed, and monitoring data in the offset restoration process are output; constructing a control strategy based on the monitoring data of the offset repairing process, and sending the control strategy to a preset construction control terminal; and the stability and the data accuracy of linear control are improved.

The invention discloses a magnesium and aluminum alloy extrusion casting forming process, and belongs to the technical field of metal material forming. According to the technical scheme that injection and mold locking are carried out synchronously, the method is characterized in that 1, after molten metal is injected into a charging barrel, mold filling injection is directly started, mold filling and mold locking are started at the same time, and mold filling and mold locking force is achieved before mold filling is completely finished; after mold filling is completed, extrusion and injection are started, the mold clamping force and the injection force of extrusion are synchronously increased, the extrusion force and the mold clamping force are offset, and the stress of the mold is greatly reduced. Inclined wedge mechanisms are adopted for extrusion pressurization and mold locking, and independent linear control over extrusion force and mold locking force is achieved. The problems of large stress and short service life of the mold caused by nonlinearity of the mold clamping force in the traditional process are effectively solved, and the method has the advantages that the mold clamping force is linearly controllable, the process stability is high and the service life of the mold is long.

The invention relates to the technical field of amplifiers, in particular to a variable gain amplifier with a wide linear gain range and a working method, and the variable gain amplifier comprises the steps that a linear gain generation circuit receives a differential input signal and provides gain-adjustable differential output based on linear control voltage; the linear gain generation circuit comprises at least one stage of variable gain unit which comprises differential input pair transistors MN1 and MN2. The load resistor elements R1 and R2 are connected between the power supply voltage VDD and the drain electrodes of the differential input pair transistors MN1 and MN2; the tail current source MN3 provides bias current for the differential input pair transistors MN1 and MN2; the active load network is connected between the drain electrodes of the differential input pair transistors MN1 and MN2 and the ground; the active load network comprises a control tube MN8, the control tube MN8 works in a sub-threshold region, a grid electrode receives linear control voltage, equivalent impedance of the active load network is enabled to be in exponential change along with the linear control voltage through exponential I-V characteristics, and dB linear gain adjustment of the variable gain unit is achieved.

The invention discloses a control method of an asymmetric CLLC resonant converter adopting mixed control of track control and PI control. PI control is adopted during steady-state operation of the asymmetric CLLC resonant converter, when input voltage fluctuation is detected, trajectory control is introduced, the frequency of the converter entering the steady state again after the input voltage fluctuation is calculated through the geometrical relationship of a state plane, and steady-state errors are eliminated through a PI controller. The method has the advantages that the combination of the state track control and the linear controller can reduce the voltage change of the output side and shorten the adjustment time when the input voltage fluctuates, so that the problem of severe fluctuation of the output voltage caused by the sudden change of the input voltage when the resonant converter operates is solved, the dynamic performance of the converter is remarkably improved, and the reliability of the converter is improved. Finally, the problems existing in the process of designing the linear controller are solved, the problem of voltage abrupt change of the input side is solved, and the requirements for rapidity and stability are met.

The invention discloses a cross arm and insulator installation robot motor control method based on a T-S fuzzy model, and the method comprises the following steps: building a permanent magnet synchronous motor nonlinear model according to electromagnetism and motor dynamics; based on a sector nonlinear method, establishing a permanent magnet synchronous motor T-S fuzzy model; designing an observer to obtain a load torque estimated value; designing an L-infinity robust controller to ensure that the angular velocity of the motor can track a reference instruction; and an anti-control gain matrix solving criterion is formulated, and it is ensured that the system meets performance indexes. According to the method, the nonlinear control problem of the permanent magnet synchronous motor system is effectively solved, the influence of continuous interference signals on the system can be effectively suppressed, and the robustness of the system is enhanced.

This invention relates to an air flow open-loop control system (20) with the ability to correct for non-linearity in a non-linear actuated damper, resulting in improved precision and less pressure variations when controlling multiple face-dampers (31) and bypass-damper (52) The controller includes a processor that receives data on the damper's position and determines the non-linearity of the damper. The correction module then corrects for this non-linearity so that the damper can be used to steer a linearly proportional air flow based on a linear control signal. The correction module generates a corrected signal for the damper that is indicative of the desired position for the damper that will result in the desired air flow. In operation mode, the processor uses this corrected signal to control the damper and produce a linearly proportional air flow. This invention enables more precise control of HVAC air flow and ensures that non-linearity in the damper does not affect the system's performance.

The invention provides a bridge steel box girder linetype control method based on multistage monitoring and dynamic adjustment. The method comprises the steps that S1, inclination angle data, mileage data and section temperature difference of a bridge steel box girder and coordinate data of all control point positions continuously collected by a sensor network are obtained; s2, constructing a theoretical linear reference curve according to the inclination angle data, the mileage data and the section temperature difference, and generating a deformation vector according to the inclination angle data and the coordinate data; s3, generating an elevation variation vector according to the theoretical linear reference curve and the deformation vector, and introducing a shape function to solve the elevation variation vector so as to obtain a hydraulic adjustment amount; and S4, the hydraulic adjustment amount is input into a PID controller, and synchronous lifting control is conducted on the hydraulic jacks so that the supporting height can be adjusted. The method has the beneficial effects that dynamic lifting control over the hydraulic jack cluster can be achieved, and the control precision is improved.

The invention relates to the technical field of bridge engineering, and discloses a cable force optimization and linear control method in the construction process of a cable-stayed bridge, and the method comprises the steps: constructing a finite element model capable of reflecting the physical characteristics of a structure and a construction risk potential model capable of quantifying the construction constraint; on the basis of weather forecast, structure disturbance potential energy caused by environmental factors in the bridge in a future control period is predicted prospectively; constructing a multi-objective optimization problem taking energy hedging residue minimization and total construction risk potential minimization as objectives, and solving to obtain a time-sequenced cable force adjustment operation sequence; after the cable force adjustment operation is executed on site, the actual response of the structure is monitored through the sensor network. According to the method, future environment disturbance can be resisted prospectively, construction management constraints are brought into optimization decision, adaptive evolution and emerging risk identification of the model are realized through closed-loop feedback, and the accuracy, safety and intelligent level of cable-stayed bridge construction control are improved.

The application discloses a prefabricated steel box girder hoisting linear control system, which comprises a steel box girder tower section base, a hoisting device, a double-hoisting-arm multi-direction adjusting hoist and a controller; the hoisting device comprises a cable hoist driving mechanism, the double-hoisting-arm multi-direction adjusting hoist is connected with the cable hoist driving mechanism and driven to move up and down by the cable hoist driving mechanism; the double-hoisting-arm multi-direction adjusting hoist comprises a first hoisting arm, a second hoisting arm, a first driving rod, a second driving rod and a central ball joint. The application is applied to the steel box girder hoisting construction system through the structural arrangement of the double-hoisting-arm multi-direction adjusting hoist, the steel box girder tower section can be adjusted in the hoisting process, the installation precision of the steel box girder tower section is controlled, the attitude of the steel box girder tower section is basically consistent with the design attitude, the linear control of in-site vertical splicing detection and on-site installation of the tower section steel box girder can be applicable, the workload of air adjustment is reduced, and the linear precision and construction quality of the overall structure are ensured.

The application relates to a single photon avalanche diode front-end circuit for multi-mode detection, which integrates a quenching, delay control and self-resetting module composed of basic MOS tubes, inverters and logic gates. Three control signals are output by a controller to configure modes: in a synchronous gating mode, the related MOS tubes are sequentially controlled to be turned on and turned off in a gating mode; in an asynchronous free-running mode, the related control levels are fixed, and the reset delay is linearly controlled by adjusting the third control signal. The application realizes dual-mode detection by using a single circuit structure, shares the core quenching path, has the advantages of small area, low power consumption and wide adjustable range of dead time, and is suitable for large-scale SPAD array integration.

This invention provides a method and apparatus for temperature control processing in an air conditioner. The method includes: upon detecting that the air conditioner has received a temperature control command, acquiring set temperature data corresponding to the temperature control command and the current initial temperature data of the air conditioner, and determining a target time required for the temperature to change from the current initial temperature data to the set temperature data; processing the current initial temperature data, the set temperature data, the target time, and a preset temperature control curve model to obtain a temperature control curve corresponding to the temperature change from the current initial temperature data to the set temperature data; and performing linear control on the air conditioner based on the temperature control curve, so that the air conditioner tracks the temperature control curve to complete a dynamic temperature control process. The air conditioner temperature control processing method provided by this invention can effectively improve the efficiency and stability of air conditioner temperature control processing and save energy consumption.

The invention relates to a protective circuit (1) for a device or power circuit breaker comprising, • an active controllable component (B1) which can be controlled in a linear range, • at least one measuring device (S P , S U , S i , S Uin , S Uout ) to determine a power output that is implemented in the actively controllable component (B1), • a processing unit (uC), • where an energy equivalent can be determined based on the specified power and a time between two measurements, • where time-separated energy equivalents are combined by the processing unit (uC), • where at least two time-related limit values ​​(G t1 , G t2 , ... G tn ) are planned, • where, upon reaching and / or exceeding a limit value (G t1 , G t2 , ... G tn) by an energy equivalent or the combined energy equivalents in a limit value (G t1 , G t2 , ... G tn ) assigned time the active controllable component (B1) is controlled by the processing unit (uC) in such a way that the current flow through. Furthermore, the invention relates to a method.

The invention relates to a game combat interaction method and device, equipment and a medium. The method comprises the steps of obtaining a linear control script, determining a current combat stage and scene interaction logic corresponding to the current combat stage according to the linear control script, and loading one or more scene interaction objects into a game scene based on the logic so as to run preset behavior logic corresponding to the scene interaction objects; the interaction process between the player character and the scene interaction object is monitored, and when it is judged that the preset interaction completion condition of the linear control script for the current combat stage is met, a scene conversion event is triggered; and in response to the scene conversion event, unloading all the current scene interaction objects, and loading the scene interaction object corresponding to the next combat stage into the game scene based on the combat stage sequence so as to run the corresponding behavior logic. According to the method, the logic dependence on high-cost animations and behaviors of the giant targets can be reduced, and meanwhile, the diversification of interaction modes and the stable, linear and controllable promotion of the whole large combat process are realized.

The invention relates to the technical field of bridges, and discloses a high pier segmented creeping formwork construction and linear control method. The method comprises the following steps: firstly, completing first-section pier body construction based on a preset pier body line type measurement and control reference and a line type deviation threshold value, and determining a pier body construction initial reference; then, according to the initial benchmark, the creeping formwork frame bodies are spliced in batches, and the creeping formwork installation benchmark is determined; then standard section circulating construction is conducted according to the creeping formwork installation reference, and all construction procedures are matched with corresponding linear control actions; and finally finishing the construction of the capping section to obtain a whole pier body linear control result. According to the method, linear deviation accumulation can be effectively inhibited, and the high pier forming linear precision is stably guaranteed.

A system and method for providing nonlinear control of a generator, comprising: a linear voltage controller and a nonlinear current controller, wherein the linear voltage controller is implemented on a microcontroller to perform: determining a reference angle for an output voltage from a first generator using a phase-locked loop; converting the reference angle and the generator output voltage from the time domain to an orthogonal reference system to generate two rotating coordinate system reference voltages; calculating the root mean square voltages of the two rotating coordinate system reference voltages and converting the root mean square voltages into an output current IfSet1; providing IfSet1 to the nonlinear current controller; and wherein the nonlinear current controller determines a control action based on the difference between IfSet1 and the output current IfFBK of a second generator.

The utility model relates to the technical field of building construction, in particular to a steel shell-reinforced concrete combined cable bent tower construction linear control device which comprises a control cabinet, a heat dissipation mechanism is arranged on the outer wall of the control cabinet, and a storage battery is installed on the outer wall of the control cabinet and above the heat dissipation mechanism. A controller is mounted on the outer wall of the control cabinet; the heat dissipation mechanism comprises a fixed box fixedly connected to the outer wall of the control cabinet, and a heat conduction plate is fixedly connected to the position, close to the control cabinet, of the inner wall of the fixed box. The problems that a cooling fan is installed in an existing control device for cooling, when the cooling fan operates, external air easily enters the equipment, and dust in the air easily affects operation of electrical elements in a control cabinet are solved.

The present application relates to a kind of super-span suspension bridge full standard wire through length cable strand scale and its manufacturing method, belong to the technical field of suspension bridge cable.The through length cable strand scale is the permanent cable strand in main cable strand and serves, during the erection of main cable strand, the through length cable strand scale is preferentially erected and uses through length cable strand scale as linear measurement scale in the erection of other main cable strand, the through length cable strand scale is made of standard wire, the standard wire is pre-marked with main cable full length mark point, and the mark point of the standard wire belonging to a through length cable strand scale is aligned, and the through length cable strand scale is anchored at both ends.The precision of through length cable strand scale reaches 1 / 40000, before the erection of other cable strand, the through length cable strand scale is first erected, and the through length cable strand scale is used as linear measurement scale in the erection of suspension bridge main cable strand, and the linear control requirement of 1 / 20000 of suspension bridge can be realized.

The present disclosure relates to inductor current shunt linear control techniques for mitigating DC-DC regulator load dump transients. For inductor-based DC-DC converters, a current shunt switch can provide a backup path for inductor current that does not include the output capacitor. An amplifier circuit can be included and coupled with a control node of the current shunt switch to adjust a voltage on the control node to control the amount of inductor current shunted from the output node. A fast linear loop can be included to ensure smooth transitions when turning on or off the current shunt switch. These techniques can minimize the subsequent negative output voltage excursion and duration when the final value of a step-down load transient is not zero, depending on the specific ESL and ESR values of the output voltage capacitor. These techniques can improve the positive output voltage response caused by output load transients in the negative direction.

The invention relates to the technical field of rotating machinery impellers, in particular to a high-efficiency low-power axial flow blade which comprises an irregular curved surface formed by sweeping a plurality of wing-shaped sections along a blade stacking line from a blade hub to the maximum circumferential direction of a blade top; the plurality of airfoil sections comprise a 0% blade height section airfoil section, a 25% blade height section airfoil section, a 50% blade height section airfoil section, a 75% blade height section airfoil section and a 100% blade height section airfoil section; the airfoil profile center line of the 0% blade height section airfoil profile is composed of three sections of control curves, and the airfoil profile center line of the 25% blade height section airfoil profile is composed of a section of control straight line and a section of control curve. The curve control equation of the control curve is a quadratic curve equation, the linear control equation of the control straight line is a linear equation, and the adjacently connected control curve in the three sections of control curves, the section of control straight line and the equation coefficient value of the section of control curve meet the continuity condition. The aerodynamic performance and noise are optimized through the angle distribution design of the axial flow blades.