49 results about "Regulator" patented technology

The application relates to the technical field of fan control, in particular to a fan control method, system, program, device and motor vehicle. First, the target rotating speed, the estimated clutch input rotating speed of the fan after the influence of the rotating speed and the slip rate, and three control modes are intelligently selected according to the clutch input rotating speed: if the target rotating speed is not higher than the rotating speed, the energy-saving disconnection mode is entered; if the target rotating speed is higher than the rotating speed but not higher than the slip-influenced rotating speed, the intelligent closed-loop mode is entered; otherwise, the high-efficiency on-off mode is entered. In the core intelligent closed-loop mode, the method combines the steady-state feedforward control amount based on the target rotating speed, the transient feedforward control amount based on the real-time rotating speed and the change rate, and the feedback control amount generated by the parameter-adjustable adaptive regulator, and the three are combined into the final control instruction. The application realizes fast, accurate and energy-saving control of the fan rotating speed. The problems of slow response, easy oscillation and high energy consumption in the prior art are solved.

The present application relates to a kind of permanent magnet shielding motor vector control energy efficiency optimization method considering magnetic field lagging phase angle, belong to permanent magnet shielding motor control field.It is characterized by: by analyzing shield sleeve eddy current effect, the analytical expression of magnetic field lagging phase angle is derived using electromagnetic field theory;The lagging phase angle is introduced into permanent magnet flux linkage term to be corrected, and the eddy current loss of shield sleeve and stator iron loss are combined into equivalent iron loss component, and a system controllable loss model is constructed;Under the constraint of constant torque, the analytical expression of total controllable loss about direct-axis current is derived and the optimal direct-axis current given value is solved.The actual application introduces angle compensation in the coordinate transformation link of vector control system, and the optimal direct-axis current given value is sent into current regulator, the accurate decoupling of dq axis current is realized, the total loss of motor is reduced, so as to improve the overall efficiency of motor control system.

This invention provides a spacecraft interface force extraction and force limit testing method based on the least squares method, applicable to a spacecraft vibration testing system. The testing system includes a vibration table, an extended table surface or horizontal slide, test fixtures, a signal conditioner, a vibration controller, a power amplifier, a vibration table oil pump, a cooling unit, and an external circulating water system. The testing method comprises fourteen steps. This invention's method analyzes a wide frequency range, reduces the cost of spacecraft force limit testing, meets the engineering application requirements for quantifying interface forces, effectively mitigates overtesting in spacecraft vibration testing, and ensures the safety of spacecraft products and equipment operation.

1. Name of the product in this design: Regulator (Intelligent Handwheel Device). 2. Purpose of this design: For the control and adjustment of the three axes of CNC machine tools. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application discloses a permanent magnet synchronous motor MTPA control method based on double virtual direct current signal injection, and particularly relates to a motor control method, in particular to a control method of a permanent magnet synchronous motor under a high-speed low-carrier ratio working condition. β A pair of virtual direct current signals with the same amplitude and opposite polarity are injected into a current vector angle, an electromagnetic torque containing the pair of signals is Taylor expanded, subtraction operation is performed on the two to obtain an approximate value of a first-order partial derivative of the torque to the current vector angle, the approximate value is input into an integral regulator, and when the input is controlled to be 0, an optimal current vector angle can be obtained β mtpa , and MTPA control is realized. In order to simultaneously improve dynamic performance and steady-state performance of the control, the method selects virtual direct current signals with different amplitudes to be injected under different working conditions, so that the motor can quickly approach an optimal current vector angle working state, and fluctuation of the current vector angle under a stable state is reduced.

System and method for sensorless control of an induction motor are disclosed. A flux observer estimates a rotor flux based on stator voltage and current measurement. A low frequency signal injection module generates a flux estimation error signal at low motor speed, while a baseline observer generates a model based flux estimation error signal at medium to high motor speed. A switching mechanism selects between these error signal based on motor condition. A proportional integral regulator and integrator process the selected error signal to estimate rotor speed. A lead compensator adjusts phase during transitions to ensure stability, with a switching signal generator activating the LFSI module when stator frequency falls below a predefined threshold. This control system provides rotor flux and speed estimation across a full range of motor speed by adaptively switching between observers based on operating conditions.

The application discloses a kind of real-time flow deviation compensation control methods of multi-sensor fusion, comprising the following steps: S1, obtain set flow;S2, the actual flow of current header is obtained by flowmeter, and the deviation between actual flow and set flow is calculated;S3, the header number of deviation exceeding pre-set range is identified, and the valve positioner is dynamically adjusted until the actual flow is stable, and the actual valve opening degree and actual flow are recorded;S4, according to the actual valve opening degree and actual flow recorded, the data points in flow-valve opening degree corresponding relationship are reversely calculated and updated using traversal method.The application identifies the header with deviation and automatically corrects flow-valve opening degree corresponding relationship, so that the system can directly obtain actual flow meeting set flow requirement when next valve action, reduces the repeated adjustment of proportional regulator, and significantly reduces flow fluctuation.

A method for controlling an HVAC system (10) includes at least one flow regulator (16), an electromechanical actuator (20), one or more sensors (34) associated with the actuator, and a controller (32) operatively connected to the actuator and the sensors. The method includes the steps of actuating the flow regulator, receiving signals from the sensors, and determining, based on the signals, whether an actual or impending fault exists. The determination is made whether the fault is in the actuator or in the flow regulator.

The present application relates to the technical field of steel metallurgy automatic control, and especially relates to a method for solving the furnace pressure fluctuation of a step-by-step heating furnace, which comprises the following steps: constructing an electrical and instrument PLC communication link to acquire a furnace door action signal in real time and presetting a compensation parameter; when detecting that the furnace door is opened, instructing a PID regulator to switch to a manual mode, and reducing the opening degree of a flue damper or the running frequency of a fan according to the working condition to perform feedforward compensation; when the furnace door is closed, restoring the opening degree or frequency reference value, and switching back to the automatic mode after a delay preset time. In addition, the method further comprises the steps of compensation value self-learning optimization, exhaust temperature correction, safety interlocking and the like. The present application can break the hysteresis of traditional regulation, realize active defense of furnace pressure interference, control the furnace pressure fluctuation in a narrow range, effectively reduce energy efficiency loss and prolong the service life of equipment.

The application discloses an elastic safety adaptive fault-tolerant control method and system for an uncertain nonlinear system, aiming at the composite problem of state jump and actuator failure caused by pulse FDI attack, proposes a pulse hybrid dynamic model, and constructs a hybrid regulator function accordingly. Through nonlinear coordinate transformation and the regulator function, the original constrained system can be converted into an unconstrained system, and the safety problem can be converted into a stability analysis problem. The actuator failure factor and deviation are estimated to offset the fault influence, an event-triggered fault-tolerant control law containing adaptive fault compensation is designed, and the communication load is reduced through an event-triggered mechanism. Lyapunov analysis proves that the system meets the safety constraint and is asymptotically stable under the double threats, effectively solves the problem of simultaneously coping with state jump, fault and hard constraint, and significantly enhances the system elasticity and fault tolerance.

The application relates to a rolling mill calendering roller flattening force control method, characterized by the following specific steps: step S1, hardware improvement: angle encoders are installed on the swing arm pivot fulcrums of the driving side and the operating side of the rolling mill calendering roller, swing arm angles of the driving side and the operating side are collected in real time, step S2, mathematical model construction: a model is established based on the swing arm angle data, and step S3, PI closed loop control; the application compares the actual force (T dact , T Oact measured by a pressure sensor) of the hydraulic cylinder with the given force (T dref , T Oref ), calculates the deviation (Delta T d , Delta T O ), dynamically adjusts the input current of the proportional valve of the hydraulic cylinder on the two sides through a PI regulator, compensates the deviation in real time, ensures that the flattening forces (F d , F O ) on the two sides are consistent, and thus the unbalance of the forces on the two sides caused by mechanical wear and installation errors can be eliminated, and defects such as one-side waves and layering can be inhibited.

The application relates to a kind of linearity control method and system of fully mechanized working face based on cascade control system, the method comprises: main regulator obtains the target overall linearity of all scraper conveyors of fully mechanized working face set, and obtains the actual overall linearity of all scraper conveyors of fully mechanized working face obtained by main transmitter monitoring;Main regulator is segmented to target overall linearity and actual overall linearity respectively, and according to the target linearity of each section after target overall linearity segmentation and the actual linearity of each section after actual overall linearity segmentation determines the straightening target of each section scraper conveyor;Main regulator sends the straightening target of each section scraper conveyor to secondary regulator, to control the actuator corresponding to each section scraper conveyor to execute push action according to the straightening target of each section scraper conveyor through secondary regulator, and the displacement of hydraulic support push rod is monitored through corresponding secondary transmitter, improve the control accuracy of the linearity of fully mechanized working face.

This invention provides a method and system for controlling the speed of a permanent magnet synchronous motor, belonging to the field of motor control technology. The method first constructs a discrete-time mathematical model of the motor and an external system including lumped reference signals and lumped disturbances, and establishes a composite system model accordingly. Then, a dimension-reduced observer is constructed to estimate the external signals, and state and input transformations are performed in conjunction with regulator equations. Next, a constraint set for the transformed system is constructed, and the state variables are decomposed into nominal components, deterministic error components, and uncertain error components. Furthermore, a time-varying constraint compression set is dynamically constructed based on the errors, and an online model predictive control optimization problem with dynamically tightened constraints is solved to obtain the nominal control quantity. Finally, the nominal control quantity and the estimated external signals are combined to synthesize the actual control voltage. This invention effectively suppresses disturbances, strictly ensures system safety constraints, guarantees the recursive feasibility and closed-loop stability of the control, and improves the dynamic response speed.

The invention relates to an operating device (10) comprising a base assembly (12) and a tilting device (14). The base assembly (12) has a bearing assembly (16) that projects perpendicularly from a reference surface (18) of the base assembly (12) and has a ball head (20) at a longitudinal end facing away from the reference surface (18). The ball head (20) is arranged in a ball socket (22) of the tilting device (14), whereby the tilting device (14) is rotatably mounted on the ball head (20). A principal extension plane (24) of the tilting device (14) is aligned parallel to the reference surface (18) of the base assembly (12) in a home position of the tilting device (14). The operating device (10) has a sensor assembly (44) which is configured to detect a deflection of the tilting device (14) from its home position.The operating device (10) has a reset device (42) which is designed to return the tilt adjuster (14) to its home position.

The present application relates to the technical field of industrial control system, disclose a kind of basin ecological water resources multi-objective collaborative optimization control method, comprising: the state space model of controlled unit is built, disturbance parameter sequence is collected;According to model prediction solution obtains control feasible solution set under different working conditions, extract the public intersection satisfying threshold constraint to establish robust control envelope set;Real-time monitoring the state deviation rate of change of controlled main loop, according to this dynamic adjustment controlled slave loop control dead zone;According to the deviation attenuation characteristics of main loop, anti-saturation reset is implemented to the integral regulator of slave loop, and inertia filter is implemented to given value, the present application establishes online adjustment boundary using robust control envelope set, reduces the impact of random disturbance on control law stability, effectively suppresses the oscillation generated in the adjustment process, realizes the nonlinear decoupling of different time scale control loop, and guarantees the running stability of controlled object.

This invention relates to the field of motor dynamic performance technology, specifically disclosing a method for optimizing excitation control parameters based on a high-voltage direct-connected synchronous condenser, comprising: Step S1, defining the excitation control parameters of the high-voltage direct-connected synchronous condenser excitation system; the excitation control parameters include: the gain of the thyristor, the time constant of the integral element of the excitation regulator, the time constant of the differential element of the excitation system, and the coefficient of the thyristor regulation element; Step S2, performing sensitivity analysis based on simulation examples to obtain the influence law of each excitation control parameter on the overvoltage value; Step S3, based on the influence law, constructing a nonlinear coupled mapping model with the excitation control parameters as input and the overvoltage value as output using a neural network; Step S4, using the LMSSA sparrow search algorithm with a leader mechanism, with the minimum overvoltage value output by the mapping model as the optimization objective function, searching and optimizing the combination of excitation control parameters, and outputting the optimized combination of excitation control parameters.

1. Name of the product in this design: Body of the regulator. 2. Purpose of this design: The entire product is an adjuster for a telescopic rod, used to adjust the length of the telescopic rod, with a portion serving as the main body of the adjuster. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. Other situations requiring explanation: This patent requests partial design protection: The part covered by the red semi-transparent color block in the view does not constitute the part for which partial appearance protection is sought.

The utility model discloses a remote control formula plastic tubular product and pipe fitting drop testing machine, including the impact surface outer frame, the impact surface outer frame rear surface middle part is welded with the lifting frame, the movable end of lifting frame is welded with angle regulator, the movable end of lifting frame is bonded fixed with the controller, the front end of angle regulator is welded with the clamping of slot, the controller is by singlechip and infrared receiving module, the impact surface outer frame includes square outer frame for receiving square impact material board, rotatable installation in the C -shaped frame of square outer frame one side through -hole. The utility model discloses a remote control formula plastic tubular product and pipe fitting drop testing machine, and this remote control formula plastic tubular product and pipe fitting drop testing machine has safety, flexibility, accuracy and stability, can effectively satisfy the drop performance test demand of plastic tubular product and pipe fitting under different conditions, provides reliable equipment support for product quality detection.

One embodiment provides a switching regulator comprising: a switch network including first, second, third and fourth switch blocks connected to one another in series, having a flying capacitor connected to a first node to which the first and second switch blocks are connected and a second node to which the third switch block and the fourth switch block are connected, and having an inductor connected to a third node to which the second and third switch blocks are connected; and a control circuit which compares a current value of one switch block from among the first, second, third and fourth switch blocks with a zero-current detection reference value so as to control zero-current switching for the one switch block, and which compares a voltage value of one end of the one switch block checked at one point after the zero-current switching with a voltage value at the other end so as to adjust the zero-current detection reference value.

The present application relates to a kind of pipeline flow automatic regulating control protection system and protection method, including the flow meter and regulating valve installed on pipeline, flow meter is used to collect the medium flow data in pipeline, regulating valve is used to adjust the medium flow in pipeline, also include main controller, analog input module and analog output module, main controller is used to control the medium flow in regulating pipeline, the acquisition data of flow meter is transmitted to main controller by the analog input module, main controller compares the acquisition data and carries out comparison operation, then control signal is output to regulating valve by the analog output module, and the adjustment control of the medium flow in pipeline is executed by regulating valve.When abnormal situation occurs in flow meter, it can switch the regulator from automatic to manual, prevent the regulating valve from fluctuating greatly, avoid the production and process indicators from fluctuating due to the problem of flow meter, so as to ensure personal safety and production conditions, the stability of running equipment.

The application provides an array amplitude-phase regulator control method and device and an array amplitude-phase regulator, and belongs to the amplitude-phase regulation technical field.The method is applied to an array amplitude-phase regulation system, the system comprises an array amplitude-phase regulator and an upper computer, the array amplitude-phase regulator comprises a main control module and a plurality of amplitude-phase regulation modules, and the method comprises the following steps: in response to receiving an array control instruction sent by the upper computer, the instruction is analyzed to obtain a target amplitude-phase regulation module and corresponding analysis parameters, the analysis parameters comprise an amplitude setting amount and a phase setting amount; for each target amplitude-phase regulation module, the following operation is performed: target amplitude compensation and target phase compensation are determined based on the analysis parameters and an error table in an error database, then the amplitude setting amount and the phase setting amount are adjusted, a control frame is generated based on the adjusted amplitude-phase setting amount, and the array amplitude-phase regulator is adjusted. The application can improve the amplitude-phase consistency, control stability and debugging efficiency of the system.

1. Name of the designed product: protective cover for scale flow regulator. 2. Use of the designed product: protective cover for scale flow regulator. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The application provides a full gas-fired boiler furnace pressure control method, system, equipment and medium, and the method comprises the following steps: obtaining the flow characteristics of the air inlet adjusting door of each layer of burner, and obtaining the corresponding opening degree instruction processing function according to the flow characteristics; obtaining the opening degree instruction of the air inlet adjusting door of each layer of burner, and performing nonlinear processing on the opening degree instruction according to the corresponding opening degree instruction processing function to obtain the corresponding relative control flow; obtaining the feedforward value of the induced draft fan regulator according to the relative control flow; obtaining the induced draft fan control instruction according to the feedforward value of the induced draft fan regulator and the preset variable structure PI controller, and controlling the full gas-fired boiler furnace pressure according to the induced draft fan control instruction. The method can effectively improve the control performance of the induced draft fan of the unit, is beneficial to improving the stability of the induced draft control system, can ensure the normal operation of the automatic regulation system of the induced draft fan when the boiler is abnormally operated, and has high practical value.

Provided are a regulator capable of further improving time measurement accuracy as compared with the related art, and a movement and timepiece including the regulator. A regulator includes a regulator pin. The regulator pin includes a pair of regulator pin main bodies and a regulator pin base portion. The regulator pin base portion is formed integrally with the pair of regulator pin main bodies and is held by a regulator body. The regulator pin main bodies are disposed so as to sandwich an outer end portion of a hairspring and contain zirconia. In the regulator pin, by extrusion molding, an outer peripheral surface and an inner peripheral surface of the regulator pin are formed, and the regulator pin main body and the regulator pin base portion are integrally formed.

The utility model relates to an argon flow adjusting device belongs to gas flow adjusting technical field, including regulator, the inner wall sliding joint of regulator has sealing board, the bottom of sealing board is provided with the control amount cover, the upper portion of sealing board is provided with slide rod, the upper portion of slide rod is provided with threaded rod, the upper portion of regulator is provided with the adjustment platform, the adjustment platform and slide rod sliding joint, the upper end inner wall of adjustment platform and threaded rod are threadedly connected between, the upper end of threaded rod is provided with first adjusting wheel. Through the intermeshing transmission of first adjusting wheel, second adjusting wheel and third adjusting wheel reaches the effect of grading adjustment, cooperation threaded rod and slide rod drive the removal of control amount cover and the data feedback of the scale on slide rod, utilize the exposed number of control amount hole, realize more accurate and easy adjustment to argon flow, thereby when controlling argon cluster ion beam, reach more uniform accurate workpiece polishing effect.

This invention relates to a method for operating a spot welding clamp, the clamp including a clamp control device, a valve device, a fluid actuator, and a sensor assembly. The method comprises the following steps: receiving and processing a fieldbus signal into a control signal; providing the control signal to the valve device by the clamp control device; influencing the fluid flow to the fluid actuator according to the control signal; detecting at least one operating pressure at the fluid actuator using the sensor assembly; and providing a sensor signal from the sensor assembly to an operating pressure regulator of the clamp control device for adjusting the operating pressure to the fluid actuator according to the control signal. According to the invention, a supply pressure signal from a supply pressure sensor disposed at an output connector of the valve device connected to the fluid actuator is provided to the supply pressure regulator for adjusting the supply pressure supplied at the output connector according to the control signal.

This invention discloses a control method and system for indirectly obtaining commutation signals based on BLDC terminal voltage, belonging to the field of brushless DC motor positionless control. The method includes: sampling the voltage of the floating phase at the current commutation point after a set electrical angle; sampling the voltage of the floating phase at the next detected zero-crossing point after the current commutation point; calculating the actual zero-crossing time using the linear relationship between the back electromotive force of the first and second sampling points; obtaining the lag compensation time from the zero-crossing point to the commutation point by combining the difference between the actual and detected zero-crossing times and the commutation reference time delay; sampling the same floating phase at an electrical angle interval of α after the current commutation point and at an electrical angle interval of (60°-α) after the turn-off point, summing the two samples, and determining whether the commutation is leading or lagging based on the result; and using a PI regulator to correct the lag compensation time in a closed loop. This invention is simple, practical, and can accurately obtain the commutation signal.

A method for checking the functionality of a safety valve (100) and a solenoid valve (140) for triggering the safety valve (100), as well as a method for checking the functionality of the corresponding device, is proposed. The safety valve (100) has a solenoid valve (140), which is used to drive a pressure relief pneumatic mechanism (130) in the event of a safety incident. First, a safety incident is triggered. The position curve of the valve component (110) is obtained and the time required until the safe position is reached is compared with a reference value. From this, it can be reliably inferred whether the safe position is caused by the solenoid valve (140) or the position regulator (120). The measurements of the pressure sensors (190, 195) can also be considered, allowing for extensive fault diagnosis when functionality cannot be guaranteed. Maintenance intervals can be optimized when the output of the check is positive.

This invention provides a sensorless control method for a permanent magnet synchronous motor, comprising the following steps: S1, simulating to obtain the id iq instruction table; S2, setting the motor speed ω to be less than the field weakening speed point, and collecting the three-phase current, voltage, and T of the motor. e S3, after performing Clark transformation on the three-phase current and voltage, i is obtained. α i β u α u β After obtaining the rotor angle, the position estimation module feeds it back to the park transformation unit and the park inverse transformation unit; S4, i α i β After performing the park transformation, we obtain i d i q The comparator in the current loop is fed back; S5, the id iq instruction table sends a set of instructions i to the comparator. d* i q* The system generates three-phase current through a PI current regulator, Park inverse converter, SVPWM module, and inverter. It then collects current, voltage, and electromagnetic torque, estimates the rotor angle, and repeats the current loop adjustment until the motor stabilizes. Finally, the id iq instruction table sends the next set of instructions. d* i q* S6, repeat S5 until all instructions in the id iq instruction table have been issued, and collect data; S7, calculate the optimal torque-speed-current relationship table through a mathematical model.