1567 results about "Speed regulator" patented technology

The invention relates to the technical field of power generation equipment control, and discloses an intelligent control method and system for a hydroelectric generating set speed regulator, and the method comprises the steps: employing an introduction variable structure and variable parameter control technology, and dynamically adjusting the control parameters of a power closed loop and an opening closed loop; real-time calculation and feedback control are carried out, and a speed regulator responds to a power grid frequency modulation Operating data of key parts of the speed regulator are collected in real time through a sensor, feature extraction and mode recognition are conducted on the data in combination with an artificial intelligence algorithm, and the operating state and potential faults of the speed regulator are recognized; constructing a fault tree model based on the speed regulator state monitoring parameters, carrying out hierarchical analysis on the speed regulator, and positioning the specific position and reason of the fault; and verifying and optimizing the fault diagnosis result, and generating a targeted fault processing suggestion. The system comprises a dynamic adjustment module, a state evaluation module and a fault analysis module. According to the invention, the operation efficiency and safety of the hydroelectric generating set speed regulator in a complex power grid environment are obviously improved.

A door management system on an aircraft includes a fuselage extending along a longitudinal axis in a fore-aft direction parallel to forward flight, an opening in a sidewall of the fuselage, a door mounted on the sidewall to slide in the fore-aft direction between a closed position covering the opening and an open position revealing the opening, a cable attached to the fuselage and the door and a speed governor operatively coupled to the cable to limit a velocity of the door as it moves between the open position and the closed position.

The invention discloses a primary frequency modulation control parameter tuning method and a control model for a large air turbine generator set, and the method comprises the steps: building a primary frequency modulation control model which comprises a PID controller, an air turbine model, a speed regulator model and a salt cavern thermodynamic dynamic model, and carrying out the parameter optimization of the PID controller through employing an improved PSO algorithm for increasing a contraction factor. A step disturbance test is carried out on the primary frequency modulation control model, and dynamic response indexes of primary frequency modulation active power regulation time, rise time, overshoot and oscillation frequency oscillation are counted and analyzed; and the influence of the primary frequency modulation action of the unit on safe and stable operation of the gas storage device (salt cavern) is evaluated. According to the invention, primary frequency modulation control parameter tuning based on simulation verification can be obtained, and the method can be used for aiding design engineering actual primary frequency modulation control strategy and parameter setting; quantitative analysis of primary frequency modulation dynamic characteristics of a large-scale compressed air energy storage power station is realized, and the method has certain guiding significance for design optimization, field debugging and testing of unit matching host equipment.

The invention discloses an assembled shell and a flight life buoy using the same, and relates to the technical field of unmanned aerial vehicles. The shell comprises a fuselage part and a wing part which are detachable, the fuselage part and the wing part are connected through a main rod and an auxiliary rod, the overall weight of the shell is effectively reduced, a mounting groove used for mounting an electronic speed regulator is further reserved in the fuselage part, and an avoiding opening communicated with the mounting groove in an aligned mode is reserved in the wing part. Therefore, when the shell is used for the flying life buoy, the air flow formed in the wing part can effectively reduce the temperature of the electronic speed regulator, and the running stability of the flying life buoy is improved.

The invention discloses an optimization control method and system for an ultra-large fan intelligent speed regulator, and relates to the technical field of fan intelligent control, and the method comprises the steps: obtaining the current operation environment parameters of a fan, including but not limited to a wind speed signal, a motor input current, a voltage, a power factor, a rotating speed, an environment temperature and atmospheric pressure; monitoring whether the wind speed fluctuation amplitude exceeds a set threshold or not in a continuous sampling period; judging whether the current system enters a critical hysteresis zone state or not, wherein the critical hysteresis zone state is a working condition when the wind speed data of the sensor does not have stability and fan output has current fluctuation abnormity and a differential pressure rapid change trend; when the system enters a critical hysteresis zone state, the collected wind speed signal is paused as a speed regulation basis, an air volume estimation model based on current, voltage, rotating speed, temperature, humidity and air pressure is constructed, and equivalent air volume is output as a pseudo feedback signal; the problem that the fan speed regulation accuracy and the system stability are reduced in the plateau low-pressure environment is solved.

The invention provides a self-adaptive algorithm and system for improving frequency measurement precision and response speed of a speed regulator. The method comprises the following steps: Step 1, signal acquisition and preprocessing; step 2, dynamically adjusting filtering parameters, and suppressing power grid signal noise; 3, extracting frequency characteristics in real time, and improving the frequency measurement resolution; 4, a synchronous clock is adopted as a reference frequency source, a clock reference value is periodically and automatically corrected, and long-term drift is eliminated; 5, a nonlinear dynamic model of the hydroelectric generating set is constructed, the nonlinear relation between the valve opening degree and output of the speed regulator is compensated in real time, and the frequency modulation precision is improved; and step 6, outputting the instantaneous frequency. According to the scheme, through the self-adaptive frequency measurement algorithm, high-precision clock calibration, a hardware acceleration mechanism and a nonlinear compensation strategy, a multi-dimensional optimization system is constructed, high-precision frequency measurement is carried out, a rapid effect can be achieved, and a hydroelectric system has long-term stability and high adaptability.

A hydroelectric generating set AGC and primary frequency control adjustment collaborative control method, comprising: introducing a governor primary frequency control action guide vane control deviation YPFC into a monitoring system of a hydroelectric generating set, incorporating the corresponding relationship between active power and guide vane opening under different working heads of the hydroelectric generating set into an AGC power control algorithm, performing AGC to track real-time the working head of the set and performing power-guide vane opening conversion and guide vane opening-power conversion on the basis of the working head of the hydroelectric generating set. The function of hydroelectric generating set AGC and primary frequency control in stabilizing the system load frequency can be fully but not excessively exerted. By means of the method, the function of AGC and primary frequency control in ensuring safe and stable operation of the system can be fully exerted, and faster adjustment of the unit can be achieved, thereby reducing guide vane servomotor fluctuation and active power frequency fluctuation during AGC and primary frequency control, reducing the operational intensity of control machinery of the set and the consumption of governor operating oil pressure, significantly reducing the maintenance costs, and reducing the risk of active power frequency oscillation in the system.

The invention provides an unmanned aerial vehicle power system data processing method based on an MCU external Flash memory, an on-chip RAM of the MCU is provided with a first storage queue and at least one second storage queue, the Flash memory is configured to comprise a system data area, a historical data area and a fault data area, and the method comprises the steps that after an electronic speed regulator of an unmanned aerial vehicle power system is powered on, the electronic speed regulator is powered on; acquiring system data and real-time operation data of the electronic speed regulator; storing the system data in a system data area; sampling the real-time operation data at a first frequency, statically storing the real-time operation data in a first storage queue, extracting data from the first storage queue at a second frequency, and writing the data into a historical data area; and sampling the real-time operation data at a third frequency, dynamically covering and storing the real-time operation data in a second storage queue, and in response to the detection that the electronic speed regulator has a fault, extracting the data from the second storage queue and continuously writing the data into a fault data area. According to the method, the storage space of the Flash memory is fully utilized, and the data can be conveniently checked and analyzed.

The invention discloses a power system load frequency control method considering disturbance compensation and a related device, and belongs to the technical field of power system regulation and control. The method comprises the following steps: respectively carrying out frequency modulation characteristic analysis on a speed regulator, a prime mover and a generator-load of the power system, and establishing a subsystem nominal model of the multi-region interconnected power system; designing a disturbance observer to observe external unknown disturbance to obtain a disturbance estimation value, and further obtaining a subsystem load frequency control model containing disturbance compensation information; based on a distributed model prediction control strategy, a distributed model prediction controller considering disturbance compensation is designed according to the subsystem load frequency control model containing the disturbance compensation information; when a certain area in the interconnected power system is disturbed, the frequency deviation of each sub-area is adjusted to be zero through a distributed model prediction controller considering disturbance compensation, and it is ensured that power exchange between connecting lines in the sub-areas and the interconnected areas of the connecting lines is kept in a zero steady state.

The invention provides a hydrometeorological unmanned ship based on a visual inertia laser radar and an SLAM navigation method thereof.The unmanned ship comprises a ship protection cover, a ship shell, the laser radar, a depth camera, an IMU module, an intelligent development board and the like, and the laser radar, the depth camera and the IMU module are connected with the intelligent development board; the unmanned ship further comprises a Beidou positioning module, a sensor module, an STM32 driving board, a brushless motor driving module and an electronic speed regulator, the unmanned ship can achieve precise positioning and path planning of a ship body, environment monitoring and sampling and has the functions of automatic cruise, obstacle avoidance and the like, laser radar information and binocular vision IMU attitude estimation are fused through tight coupling, and the navigation precision is improved. According to the SLAM front-end attitude estimator, a VILO front-end attitude estimator is formed, and laser radar observation is added to further limit the attitude, so that the accuracy and robustness of the SLAM front-end attitude estimator in indoor and outdoor environments are improved.

The invention discloses a six-degree-of-freedom pneumatic load simulation system of an offshore floating type fan and a control method, and belongs to the field of offshore wind power generation technologies and fan test equipment. The simulation system comprises a wave flow simulation device installed at the forefront of a wave pool, a floating platform fixed in the middle of the wave pool through a mooring anchor chain, a tower installed on the floating platform, a cabin installed at the top of the tower, a six-degree-of-freedom load sensor installed between the cabin and the tower, and a fixed support installed at the right front of the cabin. A plurality of groups of variable-speed fans are mounted on the fixed bracket and are connected with the controller through a brushless electronic speed regulator mounted in the cabin; a crane is installed on the upper portion of the wave pool, a data acquisition box, a visual camera and an upper computer are installed on the top of the crane, the visual camera is connected with the data acquisition box through a synchronous triggering device, and the data acquisition box is connected with the upper computer. According to the method, the high-precision six-degree-of-freedom pneumatic load can be generated, and the dynamic performance of the marine floating type fan can be accurately evaluated.

The invention relates to a power system frequency lowest point determination method and device, equipment and a storage medium. The method comprises the following steps: based on each order frequency coefficient of a generator speed regulator in a power system under power step disturbance, a virtual frequency modulation coefficient of a new energy unit, each order frequency coefficient of a load and a frequency coefficient of direct current frequency limit control FLC modulation, performing frequency modulation on the basis of the virtual frequency modulation coefficient of the new energy unit; determining an initial frequency maximum deviation point of the power system and an initial time lowest point corresponding to the initial frequency maximum deviation point; and correcting the initial frequency maximum deviation point and the initial time lowest point to obtain a target frequency maximum deviation point corresponding to the initial frequency maximum deviation point and a target time lowest point corresponding to the target frequency maximum deviation point. The method can accurately determine the lowest frequency point of the power system.

The invention discloses a hydraulic turbine set governor internal oil leakage detection method and system, and the method comprises the steps: S1, obtaining the historical oil leakage state data of a hydraulic turbine set governor oil pressure device, and building the oil leakage risk evaluation data of the oil pressure device; s2, preprocessing the oil leakage risk assessment data of the oil pressure device to obtain an oil leakage risk assessment data set; s3, constructing an oil leakage comprehensive prediction model according to the oil leakage risk assessment data set; and S4, detecting the oil leakage amount of the target hydraulic turbine set speed regulator through the oil leakage comprehensive prediction model, constructing an oil leakage comprehensive prediction model by collecting historical oil leakage state data of the hydraulic turbine set speed regulator oil pressure device, and calculating the oil leakage amount of the target hydraulic turbine set speed regulator by searching the weight and the threshold of the minimum error of the BP neural network real oil leakage amount and the prediction output result. According to the method, the accuracy of predicting the predicted oil leakage amount of the target hydraulic turbine set speed regulator is improved, workers do not need to conduct field detection in the process, and the time and energy of the workers are greatly saved.

The utility model provides a powder assembly production line for eye shadow production, which comprises a support, a conveying mechanism arranged on the support, a plurality of eye shadow boxes arranged on the conveying mechanism in a linear array, and a plurality of powder assembly work stations arranged along one side of the conveying mechanism in a linear array. The powder assembling work station comprises a cabinet, a mechanical arm mechanism arranged in the cabinet, a conveying assembly arranged close to the mechanical arm mechanism and an upper computer arranged on the cabinet, and eye shadow powder blocks are arranged on the conveying assembly; the conveying mechanism is controlled through a speed regulator, the conveying assembly is controlled through a PLC, the mechanical arm mechanisms are all connected to the upper computers through doMot ion controllers, and the conveying mechanism and the upper computers are all connected to the main computer. According to the powder combining production line for eye shadow production, eye shadow powder blocks of different colors and types can be automatically placed in the eye shadow box, time and labor are saved, the production efficiency is greatly improved, and the production cost is reduced.

The utility model provides a multi-row cylinder diesel engine exhaust stopping system based on hydraulic control pull rod stretching, and belongs to the technical field of diesel engine control. Specifically, a rocker arm shaft is rotationally sleeved with a three-jaw rocker arm, one jaw of the three-jaw rocker arm is connected with a speed regulator through a pull rod structure, a second jaw of the three-jaw rocker arm is hinged to one end of a hydraulic telescopic A-row pull rod, and the other end of the hydraulic telescopic A-row pull rod is connected with a plurality of A-row fuel injection pumps through an A-row elastic reset control rod mechanism; a third claw of the three-claw rocker arm is hinged to one end of a B-row pull rod, and the other end of the B-row pull rod is connected with a plurality of B-row fuel injection pumps through a B-row elastic reset control rod mechanism. Communicated oil holes are formed in the rocker arm shaft, the three-jaw rocker arm and the hydraulic telescopic A-row pull rod, and the electromagnetic valve is communicated with the oil holes through oil ways and is further communicated with lubricating oil with certain pressure in a lubricating oil system of the diesel engine through the oil ways. The utility model relates to a system for controlling switching between a non-pressure state and a pressurized state based on a fluid hydraulic piston rod, and single-row ignition starting of a diesel engine is realized.

The invention discloses a double-fed variable-speed pump turbine full-working-condition multi-control-mode refined mathematical model building method which comprises the steps that a double-fed asynchronous motor model is built through Park transformation; establishing a pump turbine full-working-condition refined mathematical model which comprises a pump turbine full-characteristic curve model and a water diversion pipeline model; establishing a doubly-fed variable-speed unit adjusting system model which comprises an excitation control system model, a pump turbine unit speed regulator model and a joint controller model; and based on the established model, changing module connection logic according to different control strategies, and completing the construction of the whole model. All-working-condition operation of the pump turbine can be achieved, and the dynamic response characteristics of the variable-speed unit for different fluctuation transition processes and the frequency modulation coping strategy and the power adjusting mechanism of the variable-speed unit are obtained.

The invention belongs to the field of control of electric vehicles, and discloses a compatible control device and method for stable micro-motion and quick start of a sightseeing vehicle. A vehicle feedback speed value and an accelerator given speed value are collected in real time; the accelerator given speed value after acceleration rate limiting processing is output as a motor correction speed value; the feed-forward curve processes the accelerator given speed value and the rotating speed deviation value to obtain a motor control signal, and the smaller one is taken as a feed-forward control signal to be input into a speed regulator; after the rotating speed deviation value is adjusted through PI parameters of the speed adjuster, the rotating speed deviation value serves as a compensation control signal to be overlapped with the feed-forward control signal to control the motor, so that when the vehicle runs at a low speed, the feed-forward control signal plays a small role, the smaller PI parameters and the compensation control signal set in the speed adjuster play main roles, and when the vehicle runs stably and needs to be started quickly, the motor is controlled. The feed-forward control signal plays a major role, and the vehicle can be quickly started, so that the vehicle can be quickly started while meeting stable micro-motion.

The invention provides a driving structure of a crawler belt of a stretcher crawler, and belongs to the technical field of the stretcher crawler, the driving structure of the crawler belt of the stretcher crawler is provided with a dual-driving system, and a crawler belt assembly surrounds two driving wheels and a supporting wheel to form a complete transmission path. Crawler tension changes can be detected in real time, and the rotating speed of the second driving motor can be automatically adjusted. When the front-section resistance of the track is increased, the tension detection device senses the change, and the mechanical speed regulator reduces the rotating speed of the second driving wheel through the centrifugal block and the transmission gear set to form a rotating speed difference to increase the front-section tension of the track so as to provide larger traction force. The whole system follows the constraint relation that delta n = n1-n2 = k * delta T + C, it is ensured that the rotating speed difference linearly corresponds to the tension change, and accurate dynamic adjustment of the crawler tension is achieved through coordinated operation of the double driving wheels.

The invention relates to the technical field of emergency power systems, and discloses a high-temperature gas cooled reactor emergency diesel generator governor parameter adjusting method and system. The grid state information is used for indicating whether the operation condition of the power system in the grid is stable; and according to different power grid state information, on the basis of a Droop control principle, diesel generator speed regulator parameters in different power grid states are respectively set by utilizing power grid frequency information. By monitoring the frequency of the power grid in real time and dynamically adjusting the parameters of the speed regulator, accurate matching between the generator and the power demand of the power grid at the moment of grid connection is ensured, power impact is reduced, the reverse power phenomenon caused by frequency fluctuation is also avoided, and thus the stability of the whole power system is improved.

Systems and apparatus are provided for a high-power microwave sensor using an unmanned aerial vehicle. The unmanned aerial vehicle may include a central body, at least one electric motor, and a barometric pressure feedthrough. The central body may include a first enclosure housing a plurality of low voltage components, a voltage feedthrough connector, and a second enclosure housing a plurality of high voltage components. The low voltage components may include a first signal processing system, a first radio transceiver, a flight controller, a second signal processing system, a second radio transceiver, and a navigation system. The high voltage components may include a plurality of electronic speed controllers, a power distribution module, an input power interface, and a plurality of high power filters. The components of each enclosure may be segregated such that the high voltage components do not create electromagnetic interference with the low voltage components.

Methods, systems, and apparatus for a speed regulator. A casing comprises a plurality of flat shutters, the casing configured to protrude in an extended configuration and to lay flat in a retracted configuration. A plurality of plates are configured to rotate between the extended configuration and the retracted configuration, and configured to configure the plurality of shutters in the extended configuration and the retracted configuration.

The invention relates to an electro-hydraulic speed regulator testing device, and relates to the field of diesel engine speed regulator testing equipment, the electro-hydraulic speed regulator testing device comprises a speed regulator testing table for driving an output shaft of a to-be-tested piece to rotate, the speed regulator testing table is provided with a torque loading motor, and a motor shaft of the torque loading motor is opposite to the to-be-tested piece. A motor shaft of the torque loading motor is oppositely connected with a to-be-tested piece through a torque connecting assembly, the torque loading motor loads the to-be-tested piece, one side of the speed regulator test bench is provided with a control assembly, and the control assembly is in signal connection with the torque loading motor and the to-be-tested piece. The device can shorten the time for assembling the device on a diesel engine to carry out a reliability test so as to save the cost; and corresponding test parameters can be configured according to actual application working conditions, so that the developed durability and reliability test is closer to the actual application working conditions.

The application provides a permanent magnet eddy current governor for constant torque load heavy load starting and a control method thereof, and belongs to the technical field of permanent magnet eddy current transmission speed regulation. The permanent magnet eddy current governor comprises a conductor cylinder, a magnet disc, a transmission shaft and a magnet disc axial traction mechanism. The conductor cylinder is connected with a motor input shaft, the inner wall of the conductor cylinder is fixed with two groups of annular conductor sleeves, the annular conductor sleeves are divided into starting zones and rated working zones in the axial direction, and the two groups of starting zones are separated by an idle zone. The transmission shaft passes through the rear end of the conductor cylinder, the front end is located in the conductor cylinder, and the rear end is connected with a load output shaft. The magnet disc is installed on the shaft rod of the transmission shaft located in the conductor cylinder, and the outer ring surface of the magnet disc is uniformly distributed with permanent magnets. The magnet disc axial traction mechanism is used for driving two magnet discs to synchronously approach or move away from the center of the idle zone. The application can be used for motor idle starting, heavy load controllable starting, load balancing, speed regulation operation and unloading overload protection of constant torque load.

The invention discloses a flow cooperative operation control method for cascade hydropower stations in series connection, which comprises the following steps of: responding to a planned load adjustment instruction from a power grid, obtaining unit guide vane opening degrees in a stable state by a load distribution method of each unit based on a cascade hydropower station flow cooperative principle, and taking the unit guide vane opening degrees as target guide vane opening degrees; then the current unit guide vane opening degree is opened / closed to the target guide vane opening degree in a linear mode; or unplanned load disturbance from a user side is responded, a proportional regulation module is added in the PID speed regulator, and the opening degree of the guide vane of the unit is regulated in real time according to the flow deviation of the upper-level hydropower station and the lower-level hydropower station, so that the output of the unit is regulated. The method is used for maintaining the flow collaboration among the cascade power stations after planned load adjustment / unplanned micro load disturbance occurs in the cascade power stations, and it is guaranteed that the power stations can meet the requirement for flow collaboration during normal operation.

The invention provides a magnetic energy circulation type lotus rotary opening device which comprises a base, a rotary disc, a vertical shaft, a plurality of lotus petals, a direct-current motor and a control circuit. The direct-current motor is arranged in the base, the output end of the direct-current motor is connected with the vertical shaft, and the upper portion of the vertical shaft is fixedly connected with the rotary disc. The control circuit comprises a phase-change switch K2, a speed regulator TS, a battery E0 and a carbon brush, the input end of the speed regulator TS is connected with the battery E0, the output end of the speed regulator TS is connected with a direct current motor through the phase-change switch K2, the output end of the direct current motor is connected with the carbon brush, and the electric push rod is connected with the wiring ends S1 and S2 of the carbon brush through a slip ring. The direct-current motor is adopted to drive the vertical shaft, so that the lotus petals rotate at a low speed, the push rod is linked with the pull rod to slowly open and close the lotus petals, a fixed shape is changed into a movable shape, and the ornamental value and interestingness are increased.

The utility model discloses intelligent wire enamel stirring kettle equipment which comprises a kettle body, a kettle cover arranged at the top end of the kettle body, a discharge port arranged at the bottom end of the kettle body, a feed port arranged at the top end of the kettle cover, a stirring shaft arranged in the kettle body, a stirring rod arranged on the stirring shaft, a speed regulating motor connected with the stirring shaft, and a rotating speed regulator connected with the speed regulating motor. The rotating speed regulator is connected with the main controller; a supporting rod is arranged in the kettle body, a temperature sensor is arranged on the supporting rod, a heating device is arranged on the kettle body, the temperature sensor is connected with a main controller, the main controller is connected with a temperature controller, and the temperature controller is connected with the heating device; in general, the device has the advantages of multi-point detection, flexible adjustment, good stirring quality and high efficiency.

The invention relates to the technical field of mechanical equipment monitoring and diagnosis, in particular to an analysis method and system for intelligent early warning of a speed regulator oil pressing device. The method comprises the following steps: collecting oil pressure, oil temperature and flow data of a speed regulator oil pressing device in real time; performing mode matching of real-time data by using a dynamic time warping method, detecting local abnormal data in combination with a local abnormal factor algorithm, identifying abnormal conditions of the device, and introducing a feedback loop to dynamically adjust a mode matching threshold value; according to a damped oscillation model principle, an oil pressure and flow dynamic model is constructed, relative changes of oil pressure and flow are analyzed, and device faults are analyzed in combination with system energy loss and a damping effect; and calculating a fault occurrence probability, carrying out grade division on risks, and generating early warning information. According to the intelligent early warning analysis method and system for the speed regulator oil pressing device, a dynamic time warping and local abnormal factor algorithm is introduced, and a damped oscillation model and a dynamic coupling model are combined to accurately early warn a fault.

The invention discloses a new energy minimum inertia demand calculation method for a power system. The method comprises the following steps: acquiring data information of a target power system; performing equivalence on a speed regulator and a prime mover model of each generator set in the target power system; constructing a new energy minimum inertia demand mathematical model considering the lowest frequency point of the target power system; and calculating the minimum inertia demand value of the new energy of the target power system based on the constructed mathematical model. The invention also discloses a system for realizing the new energy minimum inertia demand calculation method for the power system. According to the method, through system equivalence and model construction, calculation of the minimum inertia demand of the new energy of the power system is achieved, the optimization problem can be conveniently embedded and implemented, and the method is high in reliability, good in accuracy, convenient to apply and high in efficiency.

The invention provides an unmanned aerial vehicle propeller power and acoustic performance test system, and the system comprises a vertical column, the bottom of which is fixed on the ground through a supporting structure; the first cover closing type switching disc is arranged at the top end of the stand column; the six-axis torque sensor is arranged at the top end of the first cover closing type transfer disc; the second closed cover type adapter disc is arranged at the top end of the six-axis torque sensor, and an accommodating cavity is formed in the second closed cover type adapter disc; the magnetic encoder is fixedly mounted in the accommodating cavity; the motor is arranged at the top end of the second cover closing type transfer disc; the propeller is arranged on the motor shaft in a sleeving manner; the fairing is arranged outside the stand column in a covering mode; the electronic speed regulator is used for controlling the motor to rotate when the starting instruction is received; and the analysis module is used for acquiring force data and torque data output by the six-axis torque sensor and sound pressure data detected by the microphone, and obtaining a time domain graph, a frequency domain graph, a data table and a curve. The beneficial effects of the invention are that the device can more accurately measure and analyze the force, the torque and the radiated sound pressure of the propeller.

The invention relates to the technical field of power system automation and intelligent control, and discloses a hydropower station multi-machine common tail water system grid-connected operation coordination optimization control method and system, and the method comprises the steps: building a hydropower station multi-machine common tail water surge chamber and tail water tunnel grid-connected operation regulation system mathematical model; adopting a Hopf bifurcation theory to solve a stability domain of control parameters of each unit speed regulator of the system; establishing a multi-objective optimization function, and selecting a disturbance load proportion of each unit and a speed regulator control parameter as optimized decision variables; the decision variables are optimized through MOPSO; all the control schemes are evaluated and analyzed by using a fuzzy satisfaction evaluation method, and the scheme with the highest standardized satisfaction is selected; and verifying the effectiveness of the multi-target coordination control strategy through simulation comparative analysis. According to the method, coordinated distribution of the load among the units is considered, the dynamic regulation performance of the units, the surge chamber and the power grid frequency is integrally improved, and technical support is provided for safe and stable operation of the hydroelectric generating set and the power grid.