CN114183384A - Uniform wind simulation loading system and method - Google Patents
Uniform wind simulation loading system and method Download PDFInfo
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- CN114183384A CN114183384A CN202111405147.5A CN202111405147A CN114183384A CN 114183384 A CN114183384 A CN 114183384A CN 202111405147 A CN202111405147 A CN 202111405147A CN 114183384 A CN114183384 A CN 114183384A
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- 238000011068 loading method Methods 0.000 title claims abstract description 59
- 238000004088 simulation Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000003993 interaction Effects 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims abstract description 4
- 238000004422 calculation algorithm Methods 0.000 claims description 10
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- 238000010586 diagram Methods 0.000 description 8
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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Abstract
The invention discloses a uniform wind simulation loading system and a uniform wind simulation loading method, which can keep the force acting on a ship body stable and simulate the effect of uniform wind, so that the operation movement and navigation state of a ship under the effect of uniform wind are explored, and certain reference is provided for navigation and operation of the ship. The system comprises: the industrial personal computer is used for man-machine interaction and sending a control signal; even wind analog loading device, even wind analog loading device with the industrial computer electricity is connected, even wind analog loading device includes: a fan for generating uniform wind; the motor comprises a motor output shaft, and the motor output shaft is in transmission connection with the fan and is used for changing the wind direction angle of the fan; the base, the base includes fan base and motor base, the fan set up in on the fan base, the motor is fixed in on the motor base.
Description
Technical Field
The invention relates to the field of self-propelled ship model simulation experiments, in particular to a uniform wind simulation loading system and a uniform wind simulation loading method.
Background
When the ship sails, the ship is influenced by disturbance forces such as wind, waves and the like besides the influence of water flow and self power. When the wind speed is high and the wind direction is changeable, the operation of the ship becomes difficult and great threat is caused to the navigation safety. In the related art, the ship operation research under the wind effect is mainly in a numerical simulation stage, and the test research of a wind field is rarely carried out. Self-propelled ship model testing is a means of knowing the performance of a ship on actual water, but it is difficult to generate an expected uniform wind field on the water surface in a model pool.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present invention provides a uniform wind simulation loading system and method, which can stabilize the force acting on the ship hull and simulate the effect of uniform wind.
In a first aspect, an embodiment of the present invention provides a uniform wind simulation loading system, where the system includes:
the industrial personal computer is used for man-machine interaction and sending a control signal;
even wind analog loading device, even wind analog loading device with the industrial computer electricity is connected, even wind analog loading device includes:
a fan for generating uniform wind;
the motor comprises a motor output shaft, and the motor output shaft is in transmission connection with the fan and is used for changing the wind direction angle of the fan;
the base, the base includes fan base and motor base, the fan set up in on the fan base, the motor is fixed in on the motor base.
The uniform wind simulation loading system provided by the embodiment of the invention at least has the following beneficial effects: the uniform wind simulation loading system of the embodiment comprises an industrial personal computer and a uniform wind simulation loading device. The industrial computer is connected with even wind simulation loading device electricity, realizes simulating out the effect of even wind to even wind simulation loading device's control through the industrial computer, and then can make the power that is used in on the self-propelled ship model remain stable. Wherein even wind simulation loading device includes fan, motor and base, and the base includes fan base and motor base again. Accordingly, the fan and the motor are respectively disposed on the fan base and the motor base. The wind direction angle of the fan can be changed through the transmission connection between the motor output shaft on the motor and the fan. Meanwhile, wind power control can be realized by controlling the rotation speed of the fan. The uniform wind simulation loading system is arranged on the self-propelled ship model, a required uniform wind direction angle and wind speed are set through the industrial personal computer, the rotation angle of the motor output shaft and the rotation speed of the fan are controlled, the effect of simulating uniform wind on the self-propelled ship model can be realized, and therefore the force acting on the self-propelled ship model is kept stable, the operation motion and the navigation state of the ship under the uniform wind effect are explored, and certain reference is provided for ship navigation and operation.
According to some embodiments of the invention, the uniform wind simulation loading device further comprises:
the rotating disc is fixed on the fan base, the fan is arranged on the rotating disc, and the rotating disc is used for supporting the change of the wind direction angle of the fan;
the belt, the motor output shaft with the rotary disk passes through the belt is connected, the motor passes through the motor output shaft drives the belt rotates the back, the belt drives the rotary disk rotates.
According to some embodiments of the invention, the uniform wind simulation loading device further comprises:
the fan support is fixed on the rotating disc, the fan is fixed at the top of the fan support, and the fan support is used for supporting the fan to work.
According to some embodiments of the invention, the industrial personal computer is provided with a PID controller module for adjusting the rotation angle of the motor output shaft and the rotation speed of the fan.
According to some embodiments of the invention, the outer surface of the rotating disc and the outer surface of the motor output shaft are both toothed, and the belt comprises a toothed belt, and the rotating disc and the motor output shaft are both in toothed transmission with the belt.
According to some embodiments of the invention, the uniform wind simulation loading device further comprises:
the encoder comprises a first encoder and a second encoder, the first encoder is arranged on the motor and used for acquiring the rotating angle of the output shaft of the motor, and the second encoder is arranged on the fan and used for acquiring the rotating speed of the fan.
In a second aspect, an embodiment of the present invention further provides a uniform wind simulation loading method, where the method is applied to the system in the first aspect, and the method includes:
acquiring a required preset wind direction angle and a required preset wind speed;
converting the preset wind direction angle and the preset wind speed into a first rotation angle of the motor output shaft and a first rotation speed of the fan;
controlling the output shaft of the motor to rotate according to the first rotation angle;
controlling the fan to rotate according to the first rotating speed;
acquiring a second rotation angle of the motor output shaft detected by the first encoder;
determining that the error between the second rotation angle and the first rotation angle is smaller than a first threshold value, and controlling the output shaft of the motor to keep the second rotation angle;
acquiring a second rotating speed of the fan detected by the second encoder;
determining that the second rotational speed is less than a second threshold from the first rotational speed, controlling the fan to maintain the second rotational speed.
According to some embodiments of the invention, when the step of determining that the error between the second rotation angle and the first rotation angle is smaller than the first threshold value and controlling the motor output shaft to maintain the second rotation angle is performed, the method further comprises the steps of:
and determining that the error between the second rotation angle and the first rotation angle is greater than the first threshold value, and adjusting the rotation angle of the output shaft of the motor according to the second rotation angle of the output shaft of the motor detected by the first encoder.
According to some embodiments of the invention, when performing the step of determining that the error between the second rotational speed and the first rotational speed is less than a second threshold value, controlling the fan to maintain the second rotational speed, further comprises the steps of:
and determining that the error between the second rotation speed of the fan and the first rotation speed is greater than the second threshold, and adjusting the rotation speed of the fan according to the second rotation speed of the fan detected by the second encoder.
According to some embodiments of the invention, the method further comprises:
and adjusting the rotation angle of the output shaft of the motor or adjusting the rotation speed of the fan according to a PID algorithm.
Drawings
FIG. 1 is a schematic structural diagram of a homogeneous wind simulation loading system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a uniform wind simulation loading device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a transmission structure of a motor output shaft and a rotating disk provided according to an embodiment of the present invention;
FIG. 4 is a block flow diagram of a method for loading a uniform wind simulation according to an embodiment of the present invention;
FIG. 5 is a block flow diagram of another method for simulating loading of uniform wind according to an embodiment of the present invention;
FIG. 6 is a block flow diagram of another method for simulating loading of uniform wind according to an embodiment of the present invention;
FIG. 7 is a block flow diagram of another method for simulating loading of uniform wind according to an embodiment of the present invention;
fig. 8 is a block flow diagram of another method for loading a uniform wind simulation according to an embodiment of the present invention.
Detailed Description
The embodiments described in the embodiments of the present application should not be construed as limiting the present application, and all other embodiments that can be obtained by a person skilled in the art without making any inventive step shall fall within the scope of protection of the present application.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.
Referring to fig. 1 and 2, an embodiment of the present invention provides a uniform wind simulation loading system including an industrial personal computer 120 and a uniform wind simulation loading apparatus 110. The industrial personal computer 120 is electrically connected with the uniform wind simulation loading device 110, so that the uniform wind simulation loading device 110 can be adjusted and controlled through the industrial personal computer 120. Specifically, the uniform wind simulation loading device 110 includes a fan 280, a motor 220, and a base, which further includes a fan base 240 and a motor base 210. Accordingly, the motor 220 is fixed to the motor base 210, and the fan 280 is disposed on the fan base 240. It is easy to understand that the uniform wind simulation loading device 110 and the industrial personal computer 120 are arranged on the self-propelled ship model 100, the rotation speed of the fan 280 is kept unchanged through the operation of the fan 280, uniform wind can be generated, and the force interactivity is utilized, so that the self-propelled ship model 100 is subjected to the force of the uniform wind. Meanwhile, the motor 220 includes a motor output shaft 230. The motor output shaft 230 is in transmission connection with the fan 280, and the rotation of the motor output shaft 230 drives the fan 280 to adjust the wind direction angle, so that the direction of the uniform wind force applied to the self-propelled ship model 100 is adjusted.
In the working process of the above embodiment, the uniform wind simulation loading device 110 in the system is connected to the industrial personal computer 120 through a serial port. The industrial personal computer 120 performs man-machine interaction to obtain the required wind power and wind direction angle, and the industrial personal computer 120 obtains the corresponding wind direction angle and the rotating speed of the fan 280 through corresponding calculation. Further, a control instruction is issued to the motor 220 and the fan 280, and after receiving the control instruction, the motor 220 and the fan 280 respectively work according to the instruction, so as to realize the required uniform wind output. The adjustment of the wind direction angle of the uniform wind is realized through the transmission connection between the motor output shaft 230 of the motor 220 and the fan 280. Meanwhile, the rotational speed of the fan 280 is adjusted and controlled, thereby achieving uniform wind output. Through the control and adjustment of the motor 220 and the fan 280, the force acting on the self-propelled ship model 100 is kept stable, the effect of uniform wind is simulated, and an experimental means is provided for researching the operation motion and the sailing state of the ship under the effect of the uniform wind. It can be easily understood that, the motor 220 is fixed on the motor base, and the fan 280 is disposed on the fan base 240, so that the transmission between the motor output shaft 230 and the fan 280 can be facilitated, and the wind direction angle of the fan 280 can be well adjusted through the motor 220.
It should be noted that in some embodiments of the present invention, the motor 220 includes a speed reduction motor, which can achieve a more precise control of the rotation angle of the motor output shaft 230, and thus the wind direction angle of the fan 280.
Referring to fig. 2, in some embodiments of the present invention, the homogeneous wind simulation load device 110 further comprises a rotating disk 260 and a belt 250. Specifically, the rotary disk 260 is fixed to the fan base 240, and the fan 280 is correspondingly disposed on the rotary disk 260 such that the fan 280 can rotate with the rotary disk 260, thereby changing the wind direction angle of the fan 280. Meanwhile, the motor output shaft 230 is connected with the rotating disk 260 through a belt 250. After the industrial personal computer 120 controls the motor 220 to rotate, the motor output shaft 230 can drive the belt 250 to rotate, and further, the belt 250 drives the rotating disc 260 to rotate, so that the wind direction angle of the fan 280 is adjusted. The belt 250 is driven by controlling the motor output shaft 230, so that the rotating disc 260 is driven by the belt 250, the rotating angle of the rotating disc 260 can be controlled more accurately, and the wind direction angle adjustment and control of the fan 280 can be realized more accurately.
Referring to fig. 1 and 2, in some embodiments of the present invention, the uniform wind simulation loading device 110 further comprises a fan bracket 270. The fan bracket 270 is fixed to the rotary disk 260, and accordingly, the fan 280 is fixed to the top of the fan bracket 270. It is easily understood that by disposing the fan 280 on the top of the fan bracket 270, it is possible to reduce the situation in which the output wind is not as expected due to the fan 280 contacting some objects on the self-propelled ship model 100 or the output wind being blocked by some objects. Meanwhile, the height of the fan 280 can be increased through the fan bracket 270, and the situation that the fan 280 collides or scratches with other objects due to the rotation of the rotating disk 260 and the rotation of the fan 280 is reduced.
The fan base 240 is connected to the rotary disk 260 through a bearing, and supports the rotary disk 260. The fan 280 is fixed to the rotary disk 260 by the fan bracket 270. The rotation of the rotating disk 260 with the fan in the horizontal plane is achieved.
In some embodiments of the present invention, the homogeneous wind simulation loading device 110 is provided with an encoder, and the rotation angle of the motor output shaft 230 and the rotation speed of the fan are obtained through the encoder. Specifically, the encoder includes a first encoder and a second encoder. Wherein, the first encoder is disposed on the motor 220 to realize the actual rotation angle acquisition of the motor output shaft 230. The second encoder is disposed on the fan 280 to obtain the actual rotation speed of the fan 280. The actual rotation angle of the motor output shaft 230 and the actual rotation speed of the fan 280 are acquired by the first encoder and the second encoder, respectively, and then fed back to the industrial personal computer 120. Further, the industrial personal computer 120 determines whether the actual rotation angle of the motor output shaft 230 and the actual rotation speed of the fan 280 meet the expected requirement according to the fed back actual rotation angle of the motor output shaft 230 and the fed back actual rotation speed of the fan 280. When the actual rotation angle of the motor output shaft 230 or the actual rotation speed of the fan 280 does not meet the expected requirement, a control command is sent to adjust the motor output shaft 230 or the fan 280 accordingly. Through industrial computer 120, the first closed loop that forms between motor output shaft 230 and the first encoder, and industrial computer 120, the second closed loop that forms between fan 280 and the second encoder, can feed back motor output shaft 230's actual rotation angle and fan 280's actual rotation speed, and simultaneously, control the adjustment according to feedback data to motor output shaft 230 and fan 280, thereby realize the comparatively accurate control of motor output shaft 230 rotation angle with fan 280 rotation speed, the final realization is to the comparatively accurate stable control of the power that acts on the hull of self-propelled ship model 100, simulate out the effect of even wind.
In some embodiments of the present invention, the industrial personal computer 120 is provided with a PID controller module, and the rotation angle of the motor output shaft 230 and the rotation speed of the fan 280 are controlled and adjusted by the PID controller module. Specifically, the PID controller module performs proportional, integral and derivative operations on the acquired actual rotation angle of the motor output shaft 230 and the actual rotation speed of the fan 280, and the expected rotation angle of the motor output shaft 230 and the rotation speed of the fan 280, so as to correct errors between the actual rotation angle of the actual motor output shaft 230 and the actual rotation speed of the fan 280, and the expected rotation angle of the motor output shaft 230 and the rotation speed of the fan 280, thereby precisely controlling the rotation angle of the motor output shaft 230 and the rotation speed of the fan 280.
Referring to fig. 3, in some embodiments of the present invention, both the outer surface of the rotary disk 260 and the outer surface of the motor output shaft 230 are provided with a tooth shape. Accordingly, belt 250 comprises a toothed belt. The rotating disc 260 and the motor output shaft 230 are in meshing transmission with the belt 250. Specifically, the motor output shaft 230 is connected with the rotating disc 260 through the belt 250, the belt 250 is a toothed belt, the outer surfaces of the rotating disc 260 and the motor output shaft 230 are both in a tooth shape and are matched with the toothed belt, so that the motor output shaft 230 drives the rotating disc 260 to rotate synchronously, and the wind direction angle of the fan 280 is accurately controlled. Meanwhile, the diameter of the rotating disk 260 is larger than that of the motor output shaft 230, so that the speed reduction effect can be achieved.
Referring to fig. 4, the embodiment of the invention provides a uniform wind simulation loading method, which can keep the force acting on a ship body stable and simulate the effect of uniform wind. The method of the embodiment of the present invention includes, but is not limited to, step S410, step S420, step S430, step S440, step S450, step S460, step S470, and step S480.
Specifically, the process of the present embodiment applied to the homogeneous wind simulation loading system shown in fig. 1 includes the following steps:
s410: and acquiring a required preset wind direction angle and a required preset wind speed. S420: and converting the preset wind direction angle and the preset wind speed into a first rotation angle of the output shaft of the motor and a first rotation speed of the fan.
S430: and controlling the output shaft of the motor to rotate according to the first rotation angle.
S440: and controlling the fan to rotate according to the first rotating speed.
S450: and acquiring a second rotation angle of the output shaft of the motor detected by the first encoder.
S460: and determining that the error between the second rotating angle and the first rotating angle is smaller than a first threshold value, and controlling the output shaft of the motor to keep the second rotating angle.
S470: a second rotational speed of the fan detected by the second encoder is acquired.
S480: and determining that the error between the second rotation speed and the first rotation speed is less than a second threshold value, and controlling the fan to maintain the second rotation speed.
In the working process of the above embodiment, a preset wind direction angle and a preset wind speed to be applied to the self-propelled ship model 100 are first obtained through the industrial personal computer 120. The acquired preset wind direction angle and preset wind speed data are then converted into the corresponding first rotation angle of the motor output shaft 230 and the first rotation speed of the fan 280 by calculation, respectively. The first rotation angle of the motor output shaft 230 is an angle of rotation of the motor output shaft required to reach a predetermined wind direction angle, and the first rotation speed of the fan 280 is a rotation speed of the fan 280 required to reach a predetermined wind speed. Specifically, the industrial personal computer 120 calculates the wind force F to be applied to the hull of the self-propelled ship model 100 by the following equation (1).
Wherein ρ is the air density; c is a wind power coefficient and can be obtained through a wind tunnel test of a real ship or a Fujiwara empirical formula; v is set wind speed; and A is the projection area of the self-propelled ship model 100, which is perpendicular to the wind direction angle theta. Further, the first rotation speed n of the fan 280 is calculated by the following equation (2).
Wherein F is the calculated wind force; kpThe coefficient of thrust of the fan 280 may be obtained through experimentation; d is the diameter of the fan 280; ρ is the air density.
Meanwhile, the industrial personal computer 120 calculates a first rotation angle θ' of the motor output shaft 230 by the following equation (3).
Wherein D is2Is the diameter of the rotating disk 260; d1Is the motor output shaft 230 diameter; theta is a preset wind direction angle.
Further, the industrial personal computer 120 sends a corresponding control command to the motor 220 and the fan 280 through the serial port according to the calculated first rotation angle and the first rotation speed, and controls the motor output shaft 230 of the motor 220 to rotate and the fan 280 to rotate. Specifically, after receiving the instruction of the industrial personal computer 120, the motor 220 controls the motor output shaft 230 to rotate, and drives the rotating disc 260 to rotate to a preset angle through the belt 250. Then, a second rotation angle of the motor output shaft 230 is obtained through the first encoder, wherein the second rotation angle of the motor output shaft 230 is an actual rotation angle of the motor output shaft 230. And judging the error between the second rotation angle and the first rotation angle according to the acquired second rotation angle. When it is determined that the error between the second rotation angle and the first rotation angle is smaller than the first threshold, it may be indicated that the second rotation angle of the motor output shaft 230 has reached the preset rotation angle, and at this time, the motor output shaft 230 is controlled to maintain the second rotation angle. Meanwhile, a second rotational speed of the fan 280 is obtained by a second encoder provided on the fan 280, wherein the second rotational speed is an actual rotational speed of the fan 280. And judging the error between the second rotation speed and the first rotation speed according to the acquired second rotation speed. When it is determined that the error between the second rotational speed and the first rotational speed is less than the second threshold, which indicates that the second rotational speed of the fan 280 reaches the preset rotational speed, the fan 280 is controlled to maintain the second rotational speed output. The actual rotation angle of the motor output shaft 230 is obtained through the first encoder and fed back to the industrial personal computer 120, so that a first closed loop is formed. In addition, the actual rotation speed of the fan 280 is obtained through the second encoder and is also fed back to the industrial personal computer 120, so that a second closed loop is formed. Through the first closed loop and the second closed loop, the rotation angle of the motor output shaft 230 and the rotation speed of the fan 280 are accurately controlled, so that the force acting on the ship body is stable, and the effect of uniform wind is simulated.
Referring to fig. 5, in some embodiments of the present invention, when the step of determining that the error between the second rotation angle and the first rotation angle is smaller than the first threshold value and controlling the output shaft of the motor to maintain the second rotation angle is performed, the following steps are further included, but not limited to:
s510: and determining that the error between the second rotating angle and the first rotating angle is greater than a first threshold value, and adjusting the rotating angle of the output shaft of the motor according to the second rotating angle of the output shaft of the motor detected by the first encoder.
In the operation process of the above embodiment, after the first encoder on the motor 220 acquires the second rotation angle of the motor output shaft 230, when it is determined that the error between the second rotation angle and the first rotation angle is greater than the first threshold, the rotation angle of the motor output shaft 230 does not reach the preset rotation angle. The rotation angle of the motor output shaft 230 is adjusted accordingly according to the actual rotation angle of the motor output shaft 230 detected by the first encoder, i.e., the second rotation angle. Specifically, the second rotation angle of the motor output shaft 230 is obtained through the first encoder and fed back to the industrial personal computer 120, the industrial personal computer 120 compares the second rotation angle with the first rotation angle, calculates a distance between the second rotation angle and the first rotation angle, and determines whether an error between the rotation angle of the motor output shaft 230 and a preset rotation angle is smaller than a first threshold value. When the error between the second rotation angle and the first rotation angle is greater than the first threshold, the motor 220 is continuously controlled to adjust the rotation angle of the motor output shaft 230. Through the first closed loop formed among the first encoder, the industrial personal computer 120 and the motor 220, the rotation angle control of the motor output shaft 230 is relatively accurate.
Referring to fig. 6, in some embodiments of the present invention, when performing the step of determining that the error between the second rotation speed and the first rotation speed is less than the second threshold value and controlling the fan to maintain the second rotation speed, the following steps are further included, but not limited to:
s610: and determining that the error between the second rotation speed of the fan and the first rotation speed is larger than a second threshold value, and adjusting the rotation speed of the fan according to the second rotation speed of the fan detected by the second encoder.
In the operation process of the above embodiment, the second encoder on the fan 280 acquires the second rotation speed of the fan 280, and when it is determined that the error between the second rotation speed and the first rotation speed is greater than the second threshold, the rotation speed of the fan 280 does not reach the preset rotation speed, that is, the first rotation speed is not reached. The rotational speed of the fan 280 is adjusted accordingly based on the actual rotational speed of the fan 280 detected by the second encoder, i.e., the second rotational speed. Specifically, a second rotational speed of the fan 280 is acquired by the second encoder and then fed back to the industrial personal computer 120. The industrial personal computer 120 compares the second rotation speed with the first rotation speed, and calculates and judges whether an error between the second rotation speed and the first rotation speed is less than a second threshold value. When the error between the second rotational speed and the first rotational speed is greater than the second threshold, the fan 280 is controlled to adjust the rotational speed until the error between the second rotational speed and the first rotational speed is less than the second threshold. Through the second closed loop formed among the second encoder, the industrial personal computer 120 and the fan 280, the accurate control of the rotating speed of the fan can be realized.
Further, referring to fig. 7, in some embodiments of the invention, the method of embodiments of the invention further includes, but is not limited to, the steps of:
s710: and adjusting the rotation angle of the output shaft of the motor or adjusting the rotation speed of the fan according to a PID algorithm.
During operation of the above-described embodiment, the rotational angle of the motor output shaft 230 or the rotational speed of the fan 280 is adjusted by a PID algorithm. Specifically, a second rotation angle of the motor output shaft 230 is acquired by the first encoder or a second rotation speed of the fan 280 is acquired by the second encoder and fed back to the industrial personal computer 120. Further, the PID controller module disposed on the industrial personal computer 120 performs PID algorithm operation on the error between the first rotation angle and the second rotation angle or the error between the first rotation speed and the second rotation speed, and correspondingly controls the rotation angle of the motor output shaft 230 or the rotation speed of the fan 280 according to the operation result, so as to realize more accurate control of the rotation angle of the motor output shaft 230 or the rotation speed of the fan 280, and more stable and reliable control of the rotation angle of the motor output shaft 230 or the rotation speed of the fan 280 can be realized through the PID algorithm.
It should be noted that, in some embodiments of the present invention, the PID controller module in the industrial personal computer 120 includes a PID controller, and the rotation angle of the motor output shaft 230 or the rotation speed of the fan 280 can be controlled more precisely through various improved PID control, fuzzy adaptive control, fuzzy control combined with neural network control, and other control technologies.
Referring to FIG. 8, in some embodiments of the present invention, the flow of the homogeneous wind simulation loading method includes, but is not limited to, the following steps:
s810: and acquiring a required preset wind direction angle and a required preset wind speed.
S820: and converting the preset wind direction angle and the preset wind speed into a first rotation angle of the output shaft of the motor and a first rotation speed of the fan.
S830: and controlling the motor output shaft and the fan to rotate according to the first rotation angle and the first rotation speed.
S831: and acquiring a second rotation angle of the output shaft of the motor detected by the first encoder.
S832: a second rotational speed of the fan detected by the second encoder is acquired.
S840: and judging whether the error between the second rotation angle and the first rotation angle is smaller than a first threshold value.
S841: and adjusting the rotation angle of the output shaft of the motor according to a PID algorithm.
S842: and controlling the output shaft of the motor to keep the second rotating angle.
S850: and judging whether the error between the second rotation speed and the first rotation speed is less than a second threshold value.
S851: the fan is controlled to maintain the second rotational speed.
S852: the rotational speed of the fan is adjusted according to a PID algorithm.
In the working process of the above embodiment, firstly, the man-machine interaction is realized through the industrial personal computer 120, and the required preset wind direction angle and the preset wind speed are obtained. The preset wind direction angle and the preset wind speed are then converted into a first rotation angle of the motor output shaft 230 and a first rotation speed of the fan 280 by calculation. Further, the motor output shaft 230 and the fan 280 are controlled to rotate according to the first rotation angle and the first rotation speed. Meanwhile, a second rotation angle of the motor output shaft 230, i.e., an actual rotation angle of the motor output shaft 230, is obtained by the first encoder on the motor 220. Then, it is determined whether the error between the second rotation angle and the first rotation angle is smaller than a first threshold, and when the error between the second rotation angle and the first rotation angle is smaller than the first threshold, the rotation angle of the motor output shaft 230 reaches the first rotation angle, so that the motor output shaft 230 is controlled to maintain the second rotation angle. Accordingly, when the error between the second rotation angle and the first rotation angle is greater than the first threshold, the rotation angle of the motor output shaft 230 is adjusted according to the PID algorithm, and S831 to S840 are repeatedly performed until the error between the second rotation angle and the first rotation angle is less than the first threshold. Further, a second rotational speed of the fan 280, i.e., an actual rotational speed of the fan 280, is detected by a second encoder on the fan 280. It is then determined whether the error of the second rotational speed from the first rotational speed is less than a second threshold. When the error between the second rotational speed and the first rotational speed is less than the second threshold, it indicates that the actual rotational speed of the fan 280 has satisfied the first rotational speed, and therefore the fan 280 is controlled to maintain the second rotational speed. When the error between the second rotational speed and the first rotational speed is greater than the second threshold, the rotational speed of the fan 280 is adjusted accordingly according to the PID algorithm, and S832 to S850 are repeatedly performed until the error between the second rotational speed and the first rotational speed is less than the second threshold.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims (10)
1. A uniform wind simulated loading system, said system comprising:
the industrial personal computer is used for man-machine interaction and sending a control signal;
even wind analog loading device, even wind analog loading device with the industrial computer electricity is connected, even wind analog loading device includes:
a fan for generating uniform wind;
the motor comprises a motor output shaft, and the motor output shaft is in transmission connection with the fan and is used for changing the wind direction angle of the fan;
the base, the base includes fan base and motor base, the fan set up in on the fan base, the motor is fixed in on the motor base.
2. The homogeneous wind simulated loading system of claim 1 wherein said homogeneous wind simulated loading device further comprises:
the rotating disc is fixed on the fan base, the fan is arranged on the rotating disc, and the rotating disc is used for supporting the change of the wind direction angle of the fan;
the belt, the motor output shaft with the rotary disk passes through the belt is connected, the motor passes through the motor output shaft drives the belt rotates the back, the belt drives the rotary disk rotates.
3. The homogeneous wind simulated loading system of claim 2 wherein said homogeneous wind simulated loading device further comprises:
the fan support is fixed on the rotating disc, the fan is fixed at the top of the fan support, and the fan support is used for supporting the fan to work.
4. The uniform wind simulation loading system according to claim 1, wherein the industrial personal computer is provided with a PID controller module for adjusting a rotation angle of the motor output shaft and a rotation speed of the fan.
5. The homogeneous wind simulated loading system of claim 2 wherein said outer surface of said rotatable disk and said outer surface of said motor output shaft are both toothed and said belt comprises a toothed belt, said rotatable disk and said motor output shaft both being in toothed transmission with said belt.
6. The homogeneous wind simulated loading system of claim 1 wherein said homogeneous wind simulated loading device further comprises:
the encoder comprises a first encoder and a second encoder, the first encoder is arranged on the motor and used for acquiring the rotating angle of the output shaft of the motor, and the second encoder is arranged on the fan and used for acquiring the rotating speed of the fan.
7. A homogeneous wind simulation loading method, applied to the system of any one of claims 1 to 6, comprising:
acquiring a required preset wind direction angle and a required preset wind speed;
converting the preset wind direction angle and the preset wind speed into a first rotation angle of the motor output shaft and a first rotation speed of the fan;
controlling the output shaft of the motor to rotate according to the first rotation angle;
controlling the fan to rotate according to the first rotating speed;
acquiring a second rotation angle of the motor output shaft detected by the first encoder;
determining that the error between the second rotation angle and the first rotation angle is smaller than a first threshold value, and controlling the output shaft of the motor to keep the second rotation angle;
acquiring a second rotating speed of the fan detected by the second encoder;
determining that the second rotational speed is less than a second threshold from the first rotational speed, controlling the fan to maintain the second rotational speed.
8. The method according to claim 7, wherein when the step of determining that the error between the second rotation angle and the first rotation angle is smaller than a first threshold value and controlling the output shaft of the motor to maintain the second rotation angle is performed, the method further comprises the following steps:
and determining that the error between the second rotation angle and the first rotation angle is greater than the first threshold value, and adjusting the rotation angle of the output shaft of the motor according to the second rotation angle of the output shaft of the motor detected by the first encoder.
9. The homogeneous wind analog loading method according to claim 7, wherein the step of controlling the fan to maintain the second rotational speed while performing the step of determining that the error between the second rotational speed and the first rotational speed is less than a second threshold value further comprises the steps of:
and determining that the error between the second rotation speed of the fan and the first rotation speed is greater than the second threshold, and adjusting the rotation speed of the fan according to the second rotation speed of the fan detected by the second encoder.
10. A method of uniform wind simulated loading according to any of claims 8 or 9 further comprising:
and adjusting the rotation angle of the output shaft of the motor or adjusting the rotation speed of the fan according to a PID algorithm.
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| CN202111405147.5A CN114183384A (en) | 2021-11-24 | 2021-11-24 | Uniform wind simulation loading system and method |
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| CN103244448A (en) * | 2013-05-22 | 2013-08-14 | 湖南工业大学 | Natural wind simulating fan and method |
| CN105334018A (en) * | 2015-11-20 | 2016-02-17 | 上海交通大学 | Experimental device for simulating current loads by using fan |
| WO2017063510A1 (en) * | 2015-10-15 | 2017-04-20 | 深圳和而泰智能控制股份有限公司 | Natural wind simulation device and method |
| CN111577537A (en) * | 2020-05-13 | 2020-08-25 | 上海海事大学 | Marine power-generating rotary sail navigation aid system and method |
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2021
- 2021-11-24 CN CN202111405147.5A patent/CN114183384A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244448A (en) * | 2013-05-22 | 2013-08-14 | 湖南工业大学 | Natural wind simulating fan and method |
| WO2017063510A1 (en) * | 2015-10-15 | 2017-04-20 | 深圳和而泰智能控制股份有限公司 | Natural wind simulation device and method |
| CN105334018A (en) * | 2015-11-20 | 2016-02-17 | 上海交通大学 | Experimental device for simulating current loads by using fan |
| CN111577537A (en) * | 2020-05-13 | 2020-08-25 | 上海海事大学 | Marine power-generating rotary sail navigation aid system and method |
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