83 results about "Suction control" patented technology

The invention discloses a magnetic adjustment water lubricated bearing and a bearing support control method, which are applied to a large ship propulsion shaft system, and comprise a bearing shell, an electromagnetic excitation module, a batten, a sensor module, a power supply driving module and a control system, a plurality of mounting grooves are formed in the bearing shell; an electromagnetic excitation module is arranged in each mounting groove and generates a variable magnetic field with set intensity; a plurality of magnetically soft alloy segments are arranged on the batten, the magnetically soft alloy segments correspond to the electromagnetic excitation modules one to one, and a magnetic field acts on the magnetically soft alloy segments to generate electromagnetic attraction force; the control system independently controls the excitation current of each electromagnetic excitation module according to data of the sensor module, and generates magnetic fields with different intensities to act on soft magnetic alloy areas at corresponding positions, so that precise control of local supporting rigidity and lubricating gaps of the water-lubricated bearing is realized, unbalance loading and abnormal wear risks are effectively reduced, and the service life of the water-lubricated bearing is prolonged. And the adaptive capacity of the bearing under low-speed heavy load and dynamic disturbance is improved.

According to the quantitative filling device for the high-viscosity fluid, the intelligent sensing module and an advanced control algorithm are integrated, and the problem that in the prior art, the filling precision is poor due to material viscosity fluctuation is effectively solved. The material viscosity is predicted in real time by utilizing easily measured physical parameters, and controller parameters are dynamically adjusted by taking the material viscosity as a feedforward signal, so that the system has excellent self-adaptive capability, and the filling precision can be stably superior to two thousandths under different production batches and working conditions; meanwhile, a pulse equivalent self-learning mechanism is introduced, errors caused by slow changing factors such as mechanical abrasion can be compensated, and long-term high-precision keeping is achieved. In addition, intelligent exhaust is combined with anti-leakage back-suction control, so that the stability of the production process and the cleanness of the package are guaranteed. According to the high-viscosity cosmetic filling system, the high-viscosity cosmetic filling efficiency, precision and reliability are remarkably improved, the dependence on human experience and the equipment maintenance frequency are reduced, and a key technical support is provided for achieving intelligence and digitization of cosmetic production.

The invention relates to the technical field of automatic control, and discloses a suction force self-adaptive adjusting method based on a suction cup base, comprising the following steps: collecting current attitude disturbance information of to-be-adsorbed objects including a lamp, glass, a steel plate, a plastic box body and a wood material plate, the attitude disturbance information comprises a pitch angle, a roll angle, an angular velocity and a vertical acceleration; estimating the offset of the gravity center of the to-be-adsorbed object relative to the center of the sucker array based on the attitude disturbance information; according to the offset, target adsorption force of the object to be adsorbed is determined, and distribution is carried out according to a set load distribution weight; the invention further discloses a suction force self-adaptive adjusting system based on the suction cup base. The system comprises a posture sensing module; an offset calculation module; an adsorption force distribution module; and an adsorption control module. According to the invention, dynamic coordination and accurate tracking control of multi-sucker adsorption force are realized by fusing attitude sensing, adsorption modeling and nonlinear predictive control.

The application discloses a kind of thrombus suction control method and thrombus suction device, and thrombus suction device includes suction assembly, suction assembly includes the shell with pressure cavity, piston rod and suction catheter, thrombus suction device also includes the motor of piston rod movement and the controller connected with motor, control method is: suction catheter is positioned to the blood vessel without thrombus, make motor operate according to speed V0, calibrate the pressure value B in pressure cavity under normal blood condition;Suction catheter is positioned to the blood vessel with thrombus, make motor operate according to speed V1, V1≤V0, make dynamic pressure value A0 in pressure cavity: when A0≤B, make motor keep speed V1 operation;When A0>B, make motor increase from speed V1: when B<A0≤C, make motor increase to speed V2 operation;When C<A0≤D, make motor increase to speed V3 operation;When D<A0≤E, make motor increase to speed V4 operation.The control method thrombus removal efficiency is high, and blood loss can be reduced.

The application relates to the technical field of wafer dicing, and provides an adsorption work disc for a dicing machine, a wafer adsorption control method and the dicing machine. The adsorption work disc comprises a disc body and a sealing support. The disc body comprises a base and an adsorption part. The adsorption part is located above the base and is connected with the base to form a gas guide channel. The adsorption part comprises a plurality of adsorption units. The adsorption units are communicated with the gas guide channel. An installation groove is arranged at the edge area of the adsorption part. The installation groove is arranged at the edge of the adsorption work disc, and the sealing support is arranged in the groove. The sealing support supports the edge of the wafer. The sealing support has certain flexibility. When the wafer is adsorbed, the edge of the wafer will not be warped due to the reverse abutting force. Meanwhile, a relatively closed space is formed between the wafer and the adsorption part of the adsorption work disc and the sealing support, so that the adsorption efficiency and adsorption effect of the adsorption units on the middle area of the wafer are improved.

A vacuum suction control system for use with a vacuum source and a suction conduit includes a connection tube configured to connect the vacuum source with a lumen of the suction conduit. An on-off valve is operably coupled to the connection tube, and a sensing unit is configured to detect flow within the connection tube and provide a signal representative of the flow. A controller receives the signal to decide whether to open or close the valve. The controller can automatically close the valve to shut off the flow when the flow through the connection tube is unrestricted or according to a predetermined timing sequence. The controller can also periodically open a closed valve to determine whether the flow has entered an acceptable range. The controller can also pulse the suction with a pressure manipulation assembly when the flow is restricted or occluded.

The invention discloses an electrically-driven composite valve with a back-suction effect in the field of wafer cleaning, which comprises a valve seat, a first valve and a second valve, the valve seat is provided with a through flow channel, the first valve is located at the upstream of the flow channel and used for on-off control, the second valve is located at the downstream of the flow channel, and a cylindrical back-suction chamber is arranged at the flow channel position and used for back-suction control. The core of the second valve is a piston type valve element, and the second valve is driven by a driver to axially move in the cavity. According to the valve, traditional pneumatic drive is replaced with electric drive, after the first valve is closed, the driver drives the piston type valve element to move by the preset stroke in the axial direction, the effective volume of a cavity is increased, negative pressure is formed in a flow channel, liquid medicine is sucked back, and back suction control of the preset stroke is achieved through axial movement of the piston type valve element; stable execution of the resorption action is ensured, and the problem of pollution caused by dripping of liquid medicine is effectively solved.

The invention discloses a dredge ship energy consumption management and accurate mud suction control method, and relates to the technical field of ship engineering and intelligent control, and the method comprises the following steps: collecting a plurality of operation control strategies associated with a dredge ship for performance verification, and filing the optimal control strategy passing the performance verification; based on the received ship operation starting signal, whether operation authority is granted to the ship system or not is judged; and if the ship system is granted by the operation authority, selecting a reference regulation and control scheme of the ship from the archived optimal control strategy, and issuing a first regulation and control instruction to the ship system. Through performance verification, only the control strategy is archived and optimized, compatibility of the strategy and the ship working condition is ensured, the abnormal risk in the mud suction process is reduced, and the operation efficiency is improved; based on threshold comparison of the energy efficiency improvement rate and the stability index, data-driven strategy optimization is realized, the unit operation energy consumption can be averagely reduced, and the resource utilization rate is improved.

A modular portable anti-choking device featuring multiple suction patterns controlled via embedded computing programs is disclosed. The device incorporates an air propeller to generate suction, user-type settings for customizations, and pressure sensors for safety. A dual power supply system enables portability. The compact design makes it suitable for use in various environments including homes, restaurants, and any other settings. Its modular structure allows for easy disassembly, cleaning, and reassembly, making it easy for repeated use. The device ensures effective, safe, adaptable, and reliable operation by dynamically adjusting suction strength based on user-type and real-time sensor data, while minimizing the risk of airway injury caused by excessive suction pressure.

The application provides a U-shaped arm and an endoscope seat for an ERCP surgical robot, which comprises a U-shaped arm and an endoscope seat, the endoscope seat is arranged on one side of the U-shaped arm, the endoscope seat is used for mounting an endoscope, a connecting rod and a wire passing hole are arranged on any side wall of the U-shaped arm, and the connecting rod is used for connecting a cantilever; a control handle is arranged on the side of the U-shaped arm away from the connecting rod, the control handle is used for controlling locking or unlocking of the cantilever, and an optoelectronic sensor for sending or detecting signals is arranged on the control handle. An operation table formed by the U-shaped arm and the endoscope seat is used for integrally mounting the endoscope on the operation table and integrating a guide groove, a water vapor suction control module, a forceps lifter driving module, a knob driving module and the forceps lifter, when surgery is performed, the operation table formed by the U-shaped arm and the endoscope seat can be remotely operated, which is helpful to reduce the harm caused by long-term radiation of surgery to operators and avoid hand tremor of a doctor during operation.

The application discloses a component suction control device and a control method thereof and electronic equipment, and relates to the technical field of circuit boards.The component suction control device comprises a data storage unit, a processor and a scanner.The data storage unit is configured to send top dimension data of components belonging to a surface mount process to the processor.The processor is configured to synchronize the top dimension data to the scanner, calculate effective suction force of a suction nozzle according to a flatness detection result of the scanner and relevant parameters of the suction nozzle, determine suction risk of the component based on the effective suction force of the suction nozzle, and control a chip mounter and a planarizer to perform corresponding actions.The scanner is configured to detect flatness of the top of the component according to a preset scanning rule, and feed back the flatness detection result to the processor.The planarizer is configured to select a corresponding specification of a planarizing patch according to a repair instruction of the processor, and attach the planarizing patch to an uneven area of the top of the component.Thus, problems such as inability to suction, falling after suction and the like caused by unevenness of the top of the component can be solved from the source, and the production efficiency of the board and the product quality are significantly improved.

The application provides an automatic film cutting and soil covering type pepper direct seeding machine control method and a control system, and the automatic film cutting and soil covering type pepper direct seeding machine control method is controlled according to the following aspects: (1) seed suction control; (2) seeding operation control; (3) automatic film cutting control; and (4) film positioning and soil covering control. The control system is flexible and reliable, and can realize the control function of a seeding agricultural implement, and comprehensively realize the automatic control of film cutting, film positioning and soil covering of the whole machine, so that the film cutting, film clamping and film positioning and soil covering work of manpower are replaced. The application improves the automation degree of direct seeding, film cutting and film positioning and soil covering, and can be widely applied to the seeding of soybeans, kidney beans, peanuts and the like.

The invention relates to the technical field of vehicle engineering, and provides a numerical wind tunnel construction method for digital vehicle simulation. The method comprises: constructing a numerical wind tunnel model; the numerical wind tunnel model at least comprises a stable section, a contraction section, a test section, a diffusion section and a plenum chamber; dividing the surface of the numerical wind tunnel model by adopting a preset grid technology; encrypted grid division is adopted in the sensitive area, and gradient grid division is adopted in the non-sensitive area; the sensitive area at least comprises a test section wall surface and a contraction section near-wall area; the non-sensitive area comprises a plenum chamber and a diffusion section; a three-level boundary layer suction control strategy is adopted, so that the current flow field parameters in the test section are kept stable in a preset range, and a high-precision simulation strategy is triggered; the high-precision simulation strategy is simulated based on a pre-configured simulation condition, and when a simulation result does not fall into a target range, a simulation regulation and control strategy is triggered. Compared with the prior art, the method has the advantages that computing resources are reduced, and simulation precision is improved.

The utility model discloses a foot switch assembly for laparoscope smoke suction control, which comprises a negative pressure suction device, a filter bottle, a pedal seat, a pedal cover, an on-off control structure, a first reset spring, a second reset spring, a pin shaft and a mounting groove, the pin shaft is arranged on the pedal cover, the mounting groove is arranged on the pedal seat, and the pedal seat is arranged on the filter bottle. The hinge pin is rotatably matched with the mounting groove, the on-off control structure is arranged on the pedal seat, the two ends of the first reset spring abut against the pedal seat and the pedal cover respectively, the two ends of the second reset spring abut against the on-off control structure and the pedal cover respectively, the first reset spring is located between the hinge pin and the second reset spring, and the second reset spring is located between the hinge pin and the second reset spring. The negative pressure suction device is connected with the filter bottle through a guide pipe, and the filter bottle is connected with the on-off control structure through a guide pipe. Compared with the prior art, the switch assembly has the advantages that gas purification is achieved, meanwhile, the gas pumping and exhausting process can be achieved by controlling the pedal, and the whole operation process is convenient and fast.

The invention relates to the technical field of industrial control systems, in particular to a digital twinning-based self-adaptive control method for eye drop processing equipment, which comprises the following steps: acquiring a transient pressure attenuation sequence of an eye drop filling pipeline, a brake displacement sequence of a filling pump rotor and real-time temperature data; a rheological relaxation time constant is extracted according to the pressure sequence, a transient shear rate matrix in the pipeline is analyzed in combination with the displacement sequence, and a dynamic viscosity reference parameter is determined based on the temperature data; inputting the parameters into a digital twinborn model, and mapping and outputting a first normal stress difference dynamic evolution time sequence so as to predict a liquid bridge fracture moment and analyze residual normal tensile stress at the tail end of a needle; and analyzing the reverse resorption momentum compensation parameter based on the residual normal tensile stress and the predicted fracture moment, generating an asymmetric resorption control pulse sequence, and finally converting the asymmetric resorption control pulse sequence into a servo driving instruction and issuing the servo driving instruction to a control unit. According to the invention, through digital twin modeling, adaptive control is realized.

The utility model discloses a color steel plate grabbing device which comprises a suction cup frame, a clamping device and a clamping device. The plurality of sucker frames are connected through the connecting frame; the sucker comprises an air suction hole; the air suction hole of each suction cup is communicated with the air distribution block; the first rotary speed reducer is connected with the suction cup frame; when the first rotary speed reducer rotates, the suction cup frame rotates in the first direction. The first rotary speed reducer and the sucker are arranged on the two sides of the sucker frame respectively. The control module is used for controlling the suction force of the suction cups to the color steel plate; the control module is further used for controlling rotation of the first rotary speed reducer.

The invention relates to an automated suctioning system (100) for simultaneous suctioning (in pulsatile mode) and ventilation of tracheal secretions, improving airway management in mechanically ventilated patients. It includes a vacuum pump (101), a modified multilumen endotracheal tube (102) with valves for suction control, an oral suction adopter (103), subglottic suction tubing (104), and a ventilation-suction switch (105) to synchronize suctioning and ventilation. A lumen obstruction detector (106) identifies obstructions, while an RTOS-based microcontroller (107) manages real-time tasks. Pressure sensors (108, 109) monitor suction levels and detect blockages, and a liquid dispensing system (110) delivers mucolytic agents. A user interface device (111) provides feedback and alerts. The system dynamically adjusts suction pressure, ensuring patient safety, reducing ventilation interruptions, and enhancing secretion management in critical care settings.

A medical water jet cutter system. The medical water jet cutter system is provided with an insertion portion (12) and a handle portion (11) connected to the near end of the insertion portion (12), and the medical water jet cutter system comprises a water jet cutter assembly, a laser assembly, and a suction control assembly. The water jet cutter assembly comprises a water jet cutter channel (101) penetrating through the insertion portion (12) and the handle portion (11) and is configured to output a jet. The laser assembly comprises a laser channel (201) penetrating through the insertion portion (12) and the handle portion (11) and is configured to output laser energy. The suction control assembly comprises a suction channel (401) penetrating through the insertion portion (12) and the handle portion (11) and is configured to suck a fluid. The medical water jet cutter instrument combines water jet cutter technology and laser technology and enables the resection of prostate tissue without thermal damage while achieving hemostasis. In addition, the medical water jet cutter instrument enables the use of one instrument to complete an entire operation; during the operation, there is no need to replace the surgical instrument. The medical water jet cutter instrument is simple to operate and has a short learning curve.

The utility model relates to the technical field of negative pressure suction control, and provides a novel negative pressure suction control device which comprises a control valve body, a liquid inlet pipe is arranged at the front end of the control valve body, and a liquid discharge pipe is arranged at the rear end of the control valve body. The negative pressure suction control device effectively intercepts and filters food residues, oral mucosa cells, bacterial masses and the like, the possibility that impurities enter the control valve body is greatly reduced, and therefore the probability that a series of problems such as negative pressure adjusting function damage and equipment performance reduction caused by impurity blockage are reduced, it is guaranteed that the negative pressure suction control device can stably and accurately operate, and the service life of the negative pressure suction control device is prolonged. The stop block is arranged at the bottom end of the filter screen, the inclined face of the stop block can guide impurities filtered by the filter screen and sliding down, the impurities are made to be away from the bottom of the filter screen to be accumulated, the situation that the impurities fall into the groove to affect next-time installation when the filter screen is taken out is avoided, and the effective service cycle of the whole device is prolonged.

A medical suctioning system includes a device for insertion into an intubated patient's bronchi, the device including a controller end having actuating components that include a control mechanism coupled to a plurality of cables at the controller end, the controller end having a suction control button engaged with a plunger to allow for activation and deactivation of suction through the controller end; a control lever in communication with an articulating lever housed within the controller end, the articulating lever to engage with one or more cables disposed through the controller end and to engage with an articulating tip portion at a distal end opposite the controller end; and a catheter extending away from the controller end to the distal end.

The invention belongs to the technical field of bearing vibration measurement, and particularly relates to a rolling bearing vibration signal rapid acquisition structure. The device comprises an outer claw mechanism, an inner claw mechanism, a sealing cover, an electromagnetic lifting mechanism and a tested bearing. A flange plate of the outer claw mechanism is connected with a triangular plate of the inner claw mechanism, and a sealing cover is arranged on the flange plate. Guide sliding grooves are formed in the triangular plate and the flange plate, the inner claw fingers and the outer claw fingers can freely slide along the guide sliding grooves, and clamping of rolling bearings of different sizes can be completed; the electromagnetic lifting mechanism penetrates through the flange plate, the triangular plate and a center hole of the sealing cover, and taking, releasing, lifting and falling of the bearing are controlled through electromagnetic attraction. The device can adapt to rolling bearings of different sizes, meanwhile, the piezoelectric acceleration sensors are arranged in the rigid claws, multi-point real-time collection of vibration signals can be achieved, and the device has the advantages of being high in applicability, efficiency and precision.

A piston compactor adapted for compacting e.g. waste material and comprising a compactor tube (1) with a compactor piston (4) and a drive mechanism (5) arranged at one end and being adapted for repetitively moving the piston between a retracted and an extended position in the compactor tube, and where the piston compactor comprises a feeding pipe (9) with pipe walls (10) and an outlet end (11) being connected to a feed opening (12) arranged in the tube wall between the retracted and the extended position. The piston compactor further comprises a first suction conduit (13) having a first end (14) that is connected to the feeding pipe via a first suction opening (15) arranged near the feed opening and a second end (17) that is connected to a suction source (16), and that a suction control (18) is adapted for applying suction to the feeding pipe via the first end of the first suction conduit at least when the compactor piston is in its extended position and to shut off the suction at the first end of the first suction conduit at least when the compactor piston is in its retracted position.

The present application belongs to the technical field of engine oil pan, and discloses a suction-preventing mechanism, an oil pan and a control method for preventing the oil pan from being sucked, the suction-preventing mechanism is arranged in an oil storage cavity of an oil pan shell, an oil intercepting baffle is arranged on the cavity wall of the oil storage cavity and is used for separating the oil storage cavity into a first cavity and a second cavity, so that the oil pan is prevented from surging in one direction when the vehicle is accelerating or braking; an oil collector is arranged in the first cavity, the oil intercepting baffle has an opening for communicating the first cavity and the second cavity, an oil control plate is capable of moving relative to the oil intercepting baffle to open or close the opening, a driving member is used for driving the oil control plate to move relative to the oil intercepting baffle, so as to drive the oil control plate to open or close the opening, when the liquid level in the first cavity is low, the oil control plate is driven to move by the driving member to open the opening, so as to automatically adjust the liquid level of the oil in the first cavity, and the liquid level of the oil in the first cavity can still be adjusted under the extreme condition that the vehicle is inclined for a long time.

The Baby Nasal Aspirator is an advanced medical device engineered to alleviate nasal congestion in infants by efficiently removing mucus from their nasal passages. The device comprises a nasal tip, which is gently inserted into the baby's nostril to collect mucus. This mucus is then transported to a detachable mucus trap, ensuring easy disposal and hygienic operation. The mucus trap is connected via tubing to the main aspirator unit, which generates the necessary suction to extract the mucus. A key feature of the Baby Nasal Aspirator is its suction control mechanism, facilitated by a hole port that allows the caregiver to adjust the suction intensity, ensuring a safe and comfortable experience for the infant. The detachable design of the mucus trap simplifies cleaning and maintenance, promoting long-term usability. This device offers a practical solution for managing nasal congestion in infants, contributing to their respiratory comfort and overall health.

The invention discloses an underwater dynamic mud level measuring device and method based on a rotary encoder, and belongs to the technical field of water treatment equipment detection. The device integrates an initialization module, an angle acquisition module, a signal processing module, a mud level calculation module, a position adjustment module and a circulation self-inspection module. According to the method, reference parameter recording and threshold setting are completed through system initialization, the deflection angle of a baffle is collected and signals are transmitted when a sludge suction joist barrow moves, an effective angle is obtained through variable window filtering and abnormity elimination, the real-time sludge position is calculated in combination with geometric operation and a sludge density compensation algorithm, and then the measurement position is dynamically adjusted according to the sludge position. And cyclic measurement and abnormity monitoring are realized through regular recheck and report generation. According to the method, the defects that traditional measurement is prone to interference, low in precision and large in blind area are overcome, the stability and the automation degree of mud level measurement are improved, the method adapts to different operation working conditions of the sedimentation tank, and reliable data support is provided for refined mud suction control.

The application provides a self-adaptive control method for a brush, which comprises obtaining the current ground material type, the distance information between the brush and the wall, and the large-particle cleaning mode trigger signal, and determining whether to enter the wall-following cleaning mode and the large-particle cleaning mode based on the information. According to the determination result, the suction control parameter and the suction nozzle opening control parameter are automatically determined, and the corresponding control instruction is generated to drive the suction motor and the suction nozzle adjusting motor to adjust as needed. In this way, the device can adapt to different cleaning environments in real time, enhance the cleaning ability of large-particle garbage and difficult-to-clean areas such as corners, and significantly improve the cleaning effect. The device automatically optimizes the parameters in various cleaning tasks, providing a more efficient and intelligent cleaning experience.

A narrow-band suction device and its suction method for airfoils, relating to the field of UAV aerodynamics, includes a suction panel, a gas delivery system, and a sealing structure. The sealing structure is disposed around the suction panel, which is fixed to the wing. The delivery system is fixed to the suction panel, which is also fixed to the leading, middle, or trailing edge of the upper surface of the wing. A parameter adjustment mechanism is provided to adjust the suction speed and direction. A flow rate controller adjusts the gas flow rate, and an angle adjuster connected to the wing changes the suction direction. This device can simulate the suction control conditions of the wing under different flight states, solving the problem of poor adaptability of traditional fixed suction devices. It provides reliable data support for optimizing the aerodynamic performance of UAV airfoils and is of great significance for improving the endurance and economy of UAVs.

The invention relates to the technical field of medical instruments, and provides a needleless transdermal injection and suction control system and method.The needleless transdermal injection and suction control system comprises a setting unit, a control unit and a control unit, the setting unit comprises a parameter setting module and an operation selection module, and the parameter setting module is used for setting different parameter instructions; the operation selection module is used for setting different user use modes; the signal receiving unit is electrically connected with the setting unit; the main board is electrically connected with the signal receiving unit; and the execution unit is electrically connected with the mainboard. When the needleless transdermal injection suction control system provided by the invention is used, different user modes and parameter instructions in each user mode can be set through the setting unit, and are fed back to the main board through the signal receiving unit; the mainboard can finally control the execution unit to perform negative pressure suction, percussion injection and pressure relief actions according to feedback information, and compared with the prior art, use requirements of different crowds can be met, and more humanization is achieved.

The invention discloses a magnetic attraction unit control method and system for a vehicle door. The method comprises the steps that vehicle operation information and environment information are obtained; according to the vehicle operation information and the environment information, magnetic attraction force of a vehicle door magnetic attraction unit is obtained; controlling a vehicle door magnetic attraction unit to attract a vehicle door according to the magnetic attraction force; and when a collision trigger signal sent by the safety air bag electronic control unit is obtained, the magnetic attraction force of the vehicle door magnetic attraction unit is controlled to be invalid according to the collision trigger signal. Based on the data processing flow, a traditional mechanical lock and a sealing strip are replaced, so that the light weight and the high-speed sealing performance of the vehicle door are improved. Meanwhile, an emergency opening mechanism is provided, it is ensured that after the main power source fails, the vehicle door can be quickly unlocked, and a channel is provided for rescue.

The invention discloses a narrow-band flow suction device for airfoils and a flow suction method thereof, and relates to the technical field of pneumatic unmanned aerial vehicles, the narrow-band flow suction device comprises a flow suction panel, a conveying system for sucking gas and a sealing structure, the sealing structure is arranged around the flow suction panel, the flow suction panel is fixed on the airfoils, and the conveying system is fixed on the flow suction panel. The flow suction panel is fixed to the front edge, the middle or the rear edge of the upper surface of the wing, the parameter adjusting mechanism is arranged to adjust the flow suction speed and the flow suction direction, the flow speed controller adjusts the flow speed of gas, the angle adjuster connected with the wing changes the flow suction direction, and the flow suction control working conditions of the wing in different flight states can be simulated. The problem that a traditional fixed flow suction device is poor in adaptability is solved, reliable data support is provided for aerofoil aerodynamic performance optimization of the unmanned aerial vehicle, and great significance is achieved for improving the cruising ability and economical efficiency of the unmanned aerial vehicle.