Automatic control device and method suitable for high flow rate galloping energy utilization

Abstract

The application discloses an automatic control device and method suitable for high-flow-rate vibration energy utilization, wherein a rotating shaft A is coaxially rotated with a variable excitation generator, a torque-angle sensor, a bearing set A, a gear, and a synchronous wheel A; the bearing set A and the bearing set B are composed of two sets of bearings, the rotating shaft A and the rotating shaft B are fixed on a supporting bracket; the rotating shaft B is coaxially rotated with the bearing set B, a synchronous wheel B, a clutch, and a servo motor; the synchronous wheel A is connected with the synchronous wheel B through a synchronous belt; a rack is fixedly connected with a transmission plate through a transmission rod and is engaged with the gear; the transmission plate is further connected with a sliding block through the transmission rod, the sliding block is limited to move up and down in a sliding rail, and the sliding rail is fixed on a supporting frame; a plurality of springs are arranged between the transmission plate and the supporting frame; a vibrator is fixed with the transmission plate through a force transmission plate; the variable excitation generator transmits converted electric energy to an electric equipment; and an external adjustable excitation power supply transmits excitation voltage and current to the variable excitation generator through a separate excitation power line.

Description

Technical Field

[0001] This application relates to fields such as marine new energy and ocean current power generation, fluid mechanics, and control, and is an automatic control device and method for realizing the utilization of high-velocity galloping energy. Background Technology

[0002] Ocean current energy is widely distributed and has large reserves. According to statistics, the exploitable ocean current energy globally exceeds 6 × 10⁻⁶. 6 MW. With global economic development and energy structure adjustments, ocean current energy is bound to become one of the important trends in future renewable energy development. Recently, with the development of marine engineering technology, a new concept of power generation using flow-induced vibration has been proposed. This method utilizes fluid-induced vibration of a column, and then uses vibration power generation equipment to extract energy. The vibration forms of energy conversion include vortex-induced vibration and galloping. Flow-induced vibration power generation technology has advantages such as low starting flow velocity, large energy utilization potential, low technical cost, no impact on navigation, no occupation of arable land, and environmental friendliness. In the future, flow-induced vibration power generation technology will have a promising application prospect.

[0003] Flow-induced vibrations generate enormous energy, often causing damage to slender structures. Therefore, early research focused primarily on suppressing these vibrations. Flow-induced vibration power generation, however, aims to enhance these vibrations to obtain higher energy. To this end, many scholars have studied the characteristics of non-circular cross-section oscillators such as passively turbulent cylinders and prisms, hoping to extract more energy. The results show that non-circular cross-section oscillators have higher power generation capabilities than cylinders, but they exhibit a differential transformation from vortex-induced vibration to galloping, namely, soft galloping and hard galloping. When hard galloping occurs, the oscillator cannot transform from self-excitation of vortex-induced vibration to galloping; it can only be forced into galloping by external forces (such as large displacement). Figure 1 As shown in the figure, this results in limited utilization of galloping energy. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic control device and method for exciting and utilizing galloping energy in response to the high-velocity hard galloping phenomenon of non-circular cross-section oscillators. This invention enables the excitation and energy utilization of galloping under hard galloping conditions and provides control functions such as energy output regulation and shutdown.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] An automatic control device suitable for high-flow-rate vibration energy utilization includes a variable excitation generator, a torque-angle sensor, a rotating shaft A, a rotating shaft B, a bearing assembly A, a bearing assembly B, a support bracket, gears, a rack, synchronous pulley A, synchronous pulley B, a synchronous belt, a clutch, a servo motor, an external adjustable excitation power supply, a PLC controller, a flow rate sensor, electrical equipment, a communication line, a separately excited power supply line, an energy output line, a vibrator, a force transmission plate, a transmission plate, and a transmission rod.

[0007] The rotating shaft A rotates coaxially with the variable excitation generator, torque-angle sensor, bearing assembly A, gear, and synchronous pulley A; bearing assembly A consists of two sets of bearings, and the rotating shaft A is fixed on the support bracket; the rotating shaft B rotates coaxially with bearing assembly B, synchronous pulley B, clutch, and servo motor; bearing assembly B consists of two sets of bearings, and the rotating shaft B is fixed on the support bracket; synchronous pulley A and synchronous pulley B are connected by a synchronous belt, enabling synchronous movement of synchronous pulley A and synchronous pulley B, which in turn drives the rotating shaft A and rotating shaft B to rotate synchronously.

[0008] The rack is fixedly connected to the transmission plate via a transmission rod and meshes with a gear; the transmission plate is also connected to the slider via a transmission rod, the slider is confined to move up and down within a slide rail, and the slide rail is fixed on the support frame; several springs are provided between the transmission plate and the support frame to provide restoring force for the up and down vibration of the oscillator; the oscillator is fixed to the transmission plate via a force transmission plate; when the incoming flow passes through the oscillator, the oscillator drives the force transmission plate to move up and down, the force transmission plate drives the transmission plate to move up and down; the transmission plate drives the rack to move up and down; the rack drives the rotating shaft A and rotating shaft B to reciprocate, ultimately driving the variable excitation generator to rotate and generate electricity;

[0009] The variable excitation generator transmits converted electrical energy to the electrical equipment via the power output line; the external adjustable excitation power supply transmits excitation voltage and current to the variable excitation generator via the separately excited power supply line; the torque-angle sensor transmits torque and angle signals to the PLC controller via the communication line; the flow rate sensor transmits the incoming flow rate signal to the PLC controller via the communication line; the electrical equipment transmits energy conversion signals to the PLC controller via the communication line; the PLC controller transmits clutch execution signals to the clutch via the communication line; the PLC controller transmits servo motor execution signals to the servo motor via the communication line; and the PLC controller transmits external adjustable excitation power supply execution signals to the external adjustable excitation power supply via the communication line.

[0010] Furthermore, the communication lines include those for transmitting torque and angle signals, those for transmitting flow rate signals, those for transmitting electrical energy conversion signals, those for transmitting clutch actuation signals, those for transmitting servo motor actuation signals, and those for transmitting external adjustable excitation power supply actuation signals.

[0011] This invention also provides an automatic control method suitable for high-velocity galloping energy utilization, comprising:

[0012] (1) When the incoming flow velocity is high and the oscillator is in a galloping state, the control method is as follows:

[0013] The flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller. After calculation, it is determined that: the clutch is disengaged, the servo motor does not move, and the external adjustable excitation power supply maintains the excitation voltage and current.

[0014] The above signals are respectively transmitted to the clutch, servo motor, and external adjustable excitation power supply to perform the operation;

[0015] (2) When the incoming flow velocity fluctuates, the vibration of the oscillator is suppressed, the vibration amplitude of the oscillator decreases, and the oscillator cannot gallop. The control method at this time is as follows:

[0016] The flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller. After calculation, it is determined that: the clutch is disengaged, the servo motor does not move, and the excitation voltage and current of the external adjustable excitation power supply are adjusted to zero. The above signals are respectively transmitted to the clutch, servo motor, and external adjustable excitation power supply to execute the operation.

[0017] If the oscillator subsequently begins to oscillate, the flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller. After calculation, it is determined that: the clutch is disconnected, the servo motor does not operate, and the external adjustable excitation power supply gradually increases the excitation voltage and current to the target value; the above signals are respectively transmitted to the clutch, servo motor, and external adjustable excitation power supply to execute the operation.

[0018] As the operation is performed, the output power gradually increases and eventually maintains a stable energy output;

[0019] If the oscillator does not subsequently exhibit galloping, the flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller. After calculation, it is determined that: first, the clutch engages; then, the servo motor provides an initial amplitude for the oscillator; then, the clutch suddenly disengages, and simultaneously, the excitation voltage and current of the external adjustable excitation power supply remain at zero; the above signals are respectively transmitted to the clutch, servo motor, and external adjustable excitation power supply to execute the operation.

[0020] The oscillator is suddenly released and exhibits amplitude, resulting in galloping. At this time, the flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller. After calculation, it is determined that: the clutch is disengaged, the servo motor does not operate, and the external adjustable excitation power supply gradually increases the excitation voltage and current to the target value. The above signals are respectively transmitted to the clutch, servo motor, and external adjustable excitation power supply to execute the operation.

[0021] As the operation is performed, the output power gradually increases and eventually maintains a stable energy output;

[0022] (3) When the incoming flow velocity increases or decreases steadily, the oscillator vibration increases or decreases accordingly, and the energy utilization effect changes. The control method at this time is as follows:

[0023] The flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller. After calculation, it is determined that: the clutch is disengaged, the servo motor does not move, and the external adjustable excitation power supply increases or decreases the excitation voltage and current accordingly. The above signals are respectively transmitted to the clutch, servo motor, and external adjustable excitation power supply to perform the operation.

[0024] As the operation is performed, the output power increases or decreases and gradually remains stable;

[0025] If the amplitude, power, and flow rate do not reach the target during the adjustment process, then perform the operation in the steps.

[0026] (4) If an emergency shutdown is required, the control method is as follows:

[0027] According to the shutdown requirements, the PLC controller calculates and determines that: the clutch is engaged, the servo motor provides resistance to the vibrator to force it to stop vibrating, and the external adjustable excitation power supply adjusts the excitation voltage and current to zero; the above signals are respectively transmitted to the clutch, servo motor, and external adjustable excitation power supply to execute the operation; as the operation is executed, the vibrator stops vibrating, the output energy is zero, and the shutdown is completed.

[0028] Compared with the prior art, the beneficial effects of the technical solution of the present invention are as follows:

[0029] The automatic control device and method provided by this invention realize the energy output, adjustment, and control of flow-induced vibration equipment under high-velocity hard galloping conditions, expanding the applicable environment of flow-induced vibration power generation equipment and showing good application prospects. First, by using a variable excitation generator, an external adjustable excitation power supply, and a PLC controller, the internal excitation of the variable excitation generator can be adjusted, allowing for flexible adjustment of the excitation magnitude, thereby simultaneously adjusting the system damping and the output energy. Second, by using a clutch, a servo motor, and a PLC controller, an initial large displacement can be provided to the system, thereby realizing the external excitation for galloping and achieving effective utilization of galloping energy. Third, various sensors and communication cables, in conjunction with the PLC controller, enable rapid signal transmission and processing, and rapid output of execution signals to achieve the control effect. Fourth, the above-mentioned equipment provides the possibility of stopping the flow-induced vibration power generation equipment, ensuring the safety of the device; in addition, the above-mentioned equipment components are simple, easy to implement, and economical. Attached Figure Description

[0030] Figure 1 It is a hard-flyback response law;

[0031] Figure 2 This is a schematic diagram of the automatic control device of the present invention;

[0032] Figure 3 yes Figure 2 A magnified structural diagram of part A in the middle. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0034] like Figure 2 and Figure 3 As shown, this embodiment provides an automatic control device suitable for utilizing high-velocity vibration energy, comprising a variable excitation generator 1, a torque-angle sensor 2, rotating shafts A3A and B3B, bearing assembly A4A and B4B, a support bracket 5, a gear 6, a rack 7, synchronous pulleys A8A and B8B, a synchronous belt 9, a clutch 10, a servo motor 11, an external adjustable excitation power supply 12, a PLC controller 13, a flow rate sensor 14, electrical equipment 15, communication lines 16A, 16B, 16C, 16D, 16E, and 16F, a separately excited power supply line 17, an energy output line 18, an oscillator 19, a force transmission plate 20, a transmission plate 21, and a transmission rod 22.

[0035] The connection methods of each component are as follows: the rotating shaft A3A rotates coaxially with the variable excitation generator, torque-angle sensor 2, bearing assembly A4A, gear 6, and synchronous pulley A8A; the bearing assembly A4A consists of two sets of bearings, which fix the rotating shaft A3A on the support bracket 5; the rotating shaft B3B rotates coaxially with the bearing assembly B4B, synchronous pulley B8B, clutch 10, and servo motor 11; the bearing assembly B4B consists of two sets of bearings, which fix the rotating shaft B3B on the support bracket 5; the synchronous pulley A8A and synchronous pulley B8B are connected by a synchronous belt 9, so that the synchronous pulley A8A and synchronous pulley B8B move synchronously, driving the rotating shaft A3A and rotating shaft B3B to rotate synchronously.

[0036] Rack 7 is fixedly connected to transmission plate 21 via transmission rod 22 and meshes with gear 6; transmission plate 21 is fixed to slider 24 via transmission rod 22, slider 24 is confined within slide rail 23 for up-and-down movement, slide rail 23 is fixed to support frame 25; multiple springs 26 are provided between transmission plate 21 and support frame 25 to provide restoring force for the up-and-down vibration of oscillator 19; oscillator 19 is fixed to transmission plate 21 via force transmission plate 20; when incoming flow 27 passes through oscillator 19, oscillator 19 drives force transmission plate 20 to move up and down, force transmission plate 20 drives transmission plate 21 to move up and down; transmission plate 21 drives rack 7 to move up and down; rack 7 drives rotating shaft A3A and rotating shaft B3B to reciprocate, and finally drives variable excitation generator 1 to rotate and generate electricity.

[0037] The connection between power output and electronic control is as follows: The variable excitation generator 1 transmits converted power to the electrical equipment 15 through the power output line 18; the external adjustable excitation power supply 12 transmits excitation voltage and current to the variable excitation generator 1 through the separately excited power supply line 17; the torque-angle sensor 2 transmits torque and angle signals to the PLC controller 13 through the communication line 16A; the flow rate sensor 14 transmits the flow rate signal of the incoming flow 27 to the PLC controller 13 through the communication line 16B; the electrical equipment 15 transmits the energy conversion signal to the PLC controller 13 through the communication line 16C; the PLC controller 13 transmits the clutch execution signal to the clutch 10 through the communication line 16D; the PLC controller 13 transmits the servo motor execution signal to the servo motor 11 through the communication line 16E; and the PLC controller 13 transmits the external adjustable excitation power supply execution signal to the external adjustable excitation power supply 12 through the communication line 16F.

[0038] Specifically, in this embodiment: the vibrator 19 is a regular triangular prism with a side length of 10cm and a length of 1m perpendicular to the water flow direction, and the material is plexiglass; the force transmission plate 20 is an aluminum plate with a thickness of 1cm; the transmission plate is an aluminum plate with a thickness of 1cm; four sliders 24 are used to jointly limit the vibration displacement; the support frame 25 is a steel structure; the variable excitation generator 1 has a maximum power of 150W, and the external adjustable excitation power supply 12 outputs a regulated DC voltage range of 0~200V; the flow velocity sensor 14 has a measurement range of 0~3m / s; a clutch 10; a servo motor 11; and the voltage range is 100W for the maximum power output of the above facilities.

[0039] Specifically, the control method for the above-mentioned automatic control device applicable to high-velocity galloping energy utilization is as follows:

[0040] (1) When the incoming flow velocity of 27 is high and the oscillator 19 is in a large amplitude galloping state, the excitation voltage / current transmitted from the external adjustable excitation power supply 12 to the variable excitation generator 1 is large, and the electrical energy transmitted from the variable excitation generator 1 to the electrical equipment 15 is high, and the energy utilization is good. At this time, the control method is as follows:

[0041] The flow rate signal, power conversion signal, and torque / angle signal are transmitted to the PLC controller 13. After calculation, it is determined that: the clutch 10 is disengaged, the servo motor 11 does not operate, and the external adjustable excitation power supply 12 maintains the excitation voltage / current.

[0042] The aforementioned signals are transmitted to the clutch 10, servo motor 11, and external adjustable excitation power supply 12 respectively to perform the operation.

[0043] (2) When the flow rate of the incoming flow 27 fluctuates (suddenly decreases or suddenly increases, or suddenly fluctuates) but still maintains a relatively large flow rate, the vibration of the oscillator 19 is suppressed and the vibration amplitude of the oscillator 19 decreases. At this time, the excitation voltage / current transmitted from the external adjustable excitation power supply 12 to the variable excitation generator 1 is still relatively large, the oscillator 19 cannot vibrate, and the energy utilization effect becomes worse. At this time, the control mode is as follows: the flow rate signal, the power conversion signal, and the torque / angle signal are transmitted to the PLC controller 13, and after calculation, it is determined that: the clutch 10 is disengaged, the servo motor 11 does not move, and the excitation voltage / current of the external adjustable excitation power supply 12 is adjusted to zero; the above signals are respectively transmitted to the clutch 10, the servo motor 11, and the external adjustable excitation power supply 12 to perform the operation.

[0044] If the oscillator 19 subsequently exhibits galloping, the flow rate signal, power conversion signal, and torque / angle signal are transmitted to the PLC controller 13. After calculation, it is determined that: the clutch 10 is disconnected, the servo motor 11 does not operate, and the external adjustable excitation power supply 12 gradually increases the excitation voltage / current to the target value; the above signals are respectively transmitted to the clutch 10, the servo motor 11, and the external adjustable excitation power supply 12 to execute the operation;

[0045] As the operation is performed, the output power gradually increases and eventually maintains a stable high energy output;

[0046] If the oscillator 19 does not subsequently exhibit galloping, the flow rate signal, power conversion signal, and torque / angle signal are transmitted to the PLC controller 13. After calculation, it is determined that: first, the clutch 10 is engaged; then, the servo motor 11 provides the oscillator 19 with an initial large amplitude; then, the clutch 10 is suddenly disengaged, and at the same time, the excitation voltage / current of the external adjustable excitation power supply 12 is maintained at zero; the above signals are respectively transmitted to the clutch 10, the servo motor 11, and the external adjustable excitation power supply 12 to perform the operation.

[0047] The oscillator 19 is suddenly released and exhibits a large amplitude, resulting in galloping. At this time, the flow rate signal, power conversion signal, and torque / angle signal are transmitted to the PLC controller 13. After calculation, it is determined that the clutch 10 is disconnected, the servo motor 11 does not operate, and the external adjustable excitation power supply 12 gradually increases the excitation voltage / current to the target value. The above signals are transmitted to the clutch 10, the servo motor 11, and the external adjustable excitation power supply 12 respectively to perform the operation.

[0048] As the operation is performed, the output power gradually increases and eventually maintains a stable high energy output;

[0049] (3) When the velocity of the incoming flow 27 increases or decreases steadily, the vibration of the oscillator 19 increases or decreases accordingly, and the energy utilization effect changes. The control method at this time is as follows:

[0050] The flow rate signal, power conversion signal, and torque / angle signal are transmitted to the PLC controller 13. After calculation, it is determined that: the clutch 10 is disengaged, the servo motor 11 does not operate, and the external adjustable excitation power supply 12 increases or decreases the excitation voltage / current accordingly; the above signals are respectively transmitted to the clutch 10, the servo motor 11, and the external adjustable excitation power supply 12 to perform the operation.

[0051] As the operation is performed, the output power increases or decreases and gradually remains stable;

[0052] If the amplitude, power and flow rate do not reach the target during the adjustment process, then the operation in step (2) is performed;

[0053] (4) In case of an emergency requiring shutdown, the control method is as follows:

[0054] According to the shutdown requirement, the PLC controller 13 calculates and determines that: the clutch 10 is connected, the servo motor 11 provides resistance to the vibrator 19 to force it to stop vibrating, and the external adjustable excitation power supply 12 adjusts the excitation voltage / current to zero; the above signals are respectively transmitted to the clutch 10, the servo motor 11, and the external adjustable excitation power supply 12 to perform the operation.

[0055] As the operation was executed, the vibration of oscillator 19 stopped, the output energy was zero, and the shutdown was completed.

[0056] This invention is not limited to the embodiments described above. The above description of specific embodiments is intended to illustrate and explain the technical solutions of this invention. The specific embodiments described above are merely illustrative and not restrictive. Without departing from the spirit and scope of the claims, those skilled in the art can make many specific modifications based on the teachings of this invention, and these modifications all fall within the scope of protection of this invention.

Claims

1. An automatic control device suitable for high-velocity galloping energy utilization, characterized in that, Includes a variable excitation generator (1), a torque-angle sensor (2), a rotating shaft A (3A), a rotating shaft B (3B), a bearing assembly A (4A), a bearing assembly B (4B), a support bracket (5), a gear (6), a rack (7), a synchronous pulley A (8A), a synchronous pulley B (8B), a synchronous belt (9), a clutch (10), a servo motor (11), an external adjustable excitation power supply (12), a PLC controller (13), a flow rate sensor (14), electrical equipment (15), a communication line, a separately excited power supply line (17), an energy output line (18), a vibrator (19), a force transmission plate (20), a transmission plate (21), and a transmission rod (22); The rotating shaft A (3A) rotates coaxially with the variable excitation generator (1), torque-angle sensor (2), bearing assembly A (4A), gear (6), and synchronous pulley A (8A); the bearing assembly A (4A) consists of two sets of bearings, and the rotating shaft A (3A) is fixed on the support bracket (5); the rotating shaft B (3B) rotates coaxially with the bearing assembly B (4B), synchronous pulley B (8B), clutch 10, and servo motor (11); the bearing assembly B (4B) consists of two sets of bearings, and the rotating shaft B (3B) is fixed on the support bracket (5); the synchronous pulley A (8A) and synchronous pulley B (8B) are connected by a synchronous belt (9), so that the synchronous pulley A (8A) and synchronous pulley B (8B) can move synchronously, driving the rotating shaft A (3A) and rotating shaft B (3B) to rotate synchronously; The rack (7) is fixedly connected to the transmission plate (21) via the transmission rod (22) and meshes with the gear (6); the transmission plate (21) is also connected to the slider (24) via the transmission rod (22), the slider (24) is confined to the slide rail (23) for up and down movement, and the slide rail (23) is fixed on the support frame (25); a number of springs (26) are provided between the transmission plate (21) and the support frame (25) to provide support for the up and down vibration of the oscillator (19). Restoring force; the oscillator (19) is fixed to the transmission plate (21) via the force transmission plate (20); when the incoming flow (27) passes through the oscillator (19), the oscillator (19) drives the force transmission plate (20) to move up and down, and the force transmission plate (20) drives the transmission plate (21) to move up and down; the transmission plate (21) drives the rack (7) to move up and down; the rack (7) drives the rotating shaft A (3A) and the rotating shaft B (3B) to reciprocate, and finally drives the variable excitation generator (1) to rotate and generate electricity; The variable excitation generator (1) transmits converted electrical energy to the electrical equipment (15) through the power output line (18); the external adjustable excitation power supply (12) transmits excitation voltage and current to the variable excitation generator (1) through the separately excited power supply line (17); the torque-angle sensor (2) transmits torque and angle signals to the PLC controller (13) through the communication line; the flow rate sensor (14) transmits the flow rate signal of the incoming flow (27) to the PLC controller (13) through the communication line; the electrical equipment (15) transmits energy conversion signals to the PLC controller (13) through the communication line; the PLC controller (13) transmits clutch execution signals to the clutch (10) through the communication line; the PLC controller (13) transmits servo motor execution signals to the servo motor (11) through the communication line; the PLC controller (13) transmits external adjustable excitation power supply execution signals to external adjustable excitation power supply (12) through the communication line.

2. The automatic control device for high-velocity galloping energy utilization according to claim 1, characterized in that, The communication lines include those for transmitting torque and angle signals, those for transmitting flow rate signals, those for transmitting electrical energy conversion signals, those for transmitting clutch execution signals, those for transmitting servo motor execution signals, and those for transmitting external adjustable excitation power supply execution signals.

3. An automatic control method suitable for high-velocity galloping energy utilization, based on the automatic control device suitable for high-velocity galloping energy utilization as described in any one of claims 1-2, characterized in that, include: (1) When the incoming flow (27) has a high velocity and the oscillator (19) is in a galloping state, the control method is as follows: The flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller (13), and after calculation, it is determined that: the clutch (10) is disengaged, the servo motor (11) does not move, and the external adjustable excitation power supply (12) maintains the excitation voltage and current. The above signals are respectively transmitted to the clutch (10), servo motor (11), and external adjustable excitation power supply (12) to perform the operation; (2) When the flow velocity of the incoming flow (27) fluctuates, the vibration of the oscillator (19) is suppressed, the vibration amplitude of the oscillator (19) decreases, and the oscillator (19) cannot gallop. At this time, the control method is as follows: The flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller (13), and after calculation, it is determined that: the clutch (10) is disengaged, the servo motor (11) does not move, and the excitation voltage and current of the external adjustable excitation power supply (12) are adjusted to zero; the above signals are respectively transmitted to the clutch (10), the servo motor (11), and the external adjustable excitation power supply (12) to perform the operation. If the oscillator (19) subsequently exhibits galloping, the flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller (13). After calculation, it is determined that: the clutch (10) is disconnected, the servo motor (11) does not operate, and the external adjustable excitation power supply (12) gradually increases the excitation voltage and current to the target value; the above signals are respectively transmitted to the clutch (10), the servo motor (11), and the external adjustable excitation power supply (12) to perform the operation. As the operation is performed, the output power gradually increases and eventually maintains a stable energy output; If the oscillator (19) does not exhibit oscillation afterward, the flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller (13), and after calculation, it is determined that: first, the clutch (10) is connected, then the servo motor (11) provides an initial amplitude for the oscillator (19), then the clutch (10) is suddenly disengaged, and at the same time, the excitation voltage and current of the external adjustable excitation power supply (12) are maintained at zero; the above signals are respectively transmitted to the clutch (10), the servo motor (11), and the external adjustable excitation power supply (12) to perform the operation; The oscillator (19) is suddenly released and exhibits amplitude, resulting in galloping. At this time, the flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller (13), which calculates and determines that the clutch (10) is disconnected, the servo motor (11) does not operate, and the external adjustable excitation power supply (12) gradually increases the excitation voltage and current to the target value. The above signals are transmitted to the clutch (10), servo motor (11), and external adjustable excitation power supply (12) respectively to perform the operation. As the operation is performed, the output power gradually increases and eventually maintains a stable energy output; (3) When the velocity of the incoming flow (27) increases or decreases steadily, the vibration of the oscillator (19) increases or decreases accordingly, and the energy utilization effect changes. The control method at this time is as follows: The flow rate signal, power conversion signal, and torque-angle signal are transmitted to the PLC controller (13), and after calculation, it is determined that: the clutch (10) is disengaged, the servo motor (11) does not move, and the external adjustable excitation power supply (12) increases or decreases the excitation voltage and current accordingly; the above signals are respectively transmitted to the clutch (10), the servo motor (11), and the external adjustable excitation power supply (12) to perform the operation; As the operation is performed, the output power increases or decreases and gradually remains stable; If the amplitude, power and flow rate do not reach the target during the adjustment process, then the operation in step (2) is performed; (4) If an emergency shutdown is required, the control method is as follows: According to the shutdown requirements, the PLC controller (13) calculates and determines that: the clutch (10) is connected, the servo motor (11) provides resistance to the vibrator (19) to force it to stop vibrating, and the external adjustable excitation power supply (12) adjusts the excitation voltage and current to zero. The above signals are transmitted to the clutch (10), servo motor (11), and external adjustable excitation power supply (12) respectively to perform the operation; as the operation is performed, the oscillator (19) stops vibrating, the output energy is zero, and the shutdown is completed.

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