Energy recovery type adjustable damping inertial mass damper device and control method thereof

Abstract

This invention discloses an energy-recovery type adjustable damping capacitive vibration damping device and its control method, belonging to the field of vibration control technology. The damping device includes a base plate, a mechanical transmission and flywheel assembly, an axial flux motor assembly, an electrical energy processing and storage assembly, and a control and sensing assembly. These components work together to form a structure-electrical-control integrated capacitive damping system. The mechanical transmission and flywheel assembly includes an upper rack, a lower rack, a small transmission wheel, a gear shaft, and a flywheel. This invention employs the aforementioned energy-recovery type adjustable damping capacitive vibration damping device and its control method. By adjusting the electromagnetic damping current in real time, continuous control of the capacitive damping force is achieved without changing the flywheel structural parameters. This effectively suppresses sudden changes in capacitive force during backlash switching and impact conditions, improving the device's operational stability and energy utilization efficiency.

Description

Technical Field

[0001] This invention relates to the field of vibration control technology, and in particular to an energy recovery type adjustable damping inertial capacitance vibration reduction device and its control method. Background Technology

[0002] Inertial capacitive damping devices can generate inertial reaction forces related to relative acceleration when a structure undergoes relative motion, thereby effectively improving the vibration control capability of the structure without significantly increasing the mass of the device. In the prior art, flywheel-type inertial capacitive damping devices typically use mechanical transmission mechanisms such as gear racks or lead screws to convert the linear displacement of the structure into the rotational motion of a flywheel, utilizing the rotational inertia of the flywheel to form a large equivalent inertial mass.

[0003] However, existing flywheel-type inertial capacitive damping devices still have the following shortcomings: near speed reversal and zero speed, the unavoidable transmission backlash in mechanical transmission mechanisms such as gears and racks can easily lead to sudden changes in flywheel inertial capacitive force, thereby causing mechanical shock and motion jamming, reducing the operational stability of the device.

[0004] Therefore, it is necessary to propose a novel inertial capacitive damping device and its control method that can effectively suppress sudden changes in inertial capacitive force. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-recovery type adjustable damping inertial capacitance vibration reduction device and its control method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides an energy recovery type adjustable damping inertial capacitance vibration reduction device, including a base plate, a mechanical transmission and flywheel assembly, an axial flux motor assembly, an electrical energy processing and storage assembly, and a control and sensing assembly, wherein the electrical energy processing and storage assembly and the control and sensing assembly are disposed on the same side of the base plate.

[0007] The mechanical transmission and flywheel assembly includes an upper rack, a lower rack, small transmission wheels, a gear shaft, and a flywheel. The upper rack and the lower rack are symmetrically arranged below the base plate. The two small transmission wheels mesh with the upper rack and the lower rack respectively and are fixedly installed on the gear shaft. The gear shaft is mounted on the base plate through bearings.

[0008] Preferably, the upper rack and the lower rack are connected by a rack reinforcement member, and the two ends of the upper rack and the lower rack are connected by a connector.

[0009] A large transmission wheel is rotatably mounted on the base plate. The small transmission wheel is connected to the large transmission wheel via a belt drive. The flywheel is fixedly installed above the large transmission wheel, forming an integral structure with the large transmission wheel. During the reciprocating motion of the upper rack and the lower rack, a rotational inertia effect is generated, and an equivalent inertial reaction force is formed on the side of the structure.

[0010] Preferably, the axial flux motor assembly includes a rotor and a stator. The rotor is fixedly mounted on the flywheel, and a plurality of permanent magnets are evenly spaced on the rotor. The stator is fixedly mounted above the base plate and disposed on the outside of the rotor, forming an axial air gap with the rotor.

[0011] The stator is wound with a three-phase power generation winding. When the flywheel and rotor rotate, the three-phase power generation winding cuts the permanent magnet to generate a rotating magnetic field and generates three-phase alternating current in the three-phase power generation winding.

[0012] Preferably, the power processing and energy storage component includes a three-phase rectifier bridge, a DC bus, a DC bus capacitor, a main power DC / DC converter, an energy storage unit, and a braking resistor branch. The three-phase rectifier bridge, the DC bus capacitor, the main power DC / DC converter, the energy storage unit, and the braking resistor branch form a power processing topology with multiple branches connected in parallel around the DC bus.

[0013] The energy storage unit includes a supercapacitor, a battery, or a combination of both, for storing electrical energy recovered during the damping process and providing energy support for the control and sensing components.

[0014] Preferably, the three-phase generator windings are respectively connected to the input terminals of the three-phase rectifier bridge via wires. The three-phase rectifier bridge performs full-wave rectification on the three-phase AC power. The output terminals of the three-phase rectifier bridge respectively form a DC positive terminal and a DC negative terminal. The DC positive terminal and the DC negative terminal together constitute the DC bus.

[0015] Preferably, the DC bus capacitor is connected in parallel between the DC positive terminal and the DC negative terminal. The DC bus capacitor is used to suppress voltage ripple generated during rectification and to absorb transient power changes under conditions of rapid flywheel deceleration or impact.

[0016] The input terminals of the main power DC / DC converter are connected to the positive and negative terminals of the DC bus, respectively, and the output terminal of the main power DC / DC converter is connected to the energy storage unit. When the main power DC / DC converter is working, it is in current control mode. By adjusting the magnitude of the current absorbed from the DC bus, the electromagnetic damping level is continuously adjusted, and the absorbed electrical energy is transferred to the energy storage unit.

[0017] Preferably, the braking resistor branch is composed of a power switch and a braking resistor connected in series, and the two ends of the braking resistor branch are respectively connected in parallel to the positive and negative terminals of the DC bus. When the DC bus voltage exceeds a preset threshold or the energy storage unit is in a saturated state, the excess energy is dissipated in the braking resistor by turning on the power switch.

[0018] Preferably, the control and sensing components include an MCU controller, a gate driver, a speed sensor, a voltage sensor, a current sensor, and a structural motion sensor;

[0019] The MCU controller is connected to the main power DC / DC converter and the power switch through the gate driver, and is used to execute the damping control algorithm and energy management strategy; the speed sensor is set above the rotor and is used to detect the angular velocity of the flywheel or the rotor; the voltage sensor and the current sensor are used to detect the DC bus voltage, current and energy storage unit status; the structural motion sensor is used to detect the displacement, velocity or acceleration signal of the structure.

[0020] Preferably, the three-phase AC power output from the three-phase generator winding is rectified to form a DC bus voltage. When the main power DC / DC converter is working, it is in current control mode and absorbs the target current from the DC bus under the control of the MCU controller.

[0021] Since the rotor and flywheel are rigidly connected, the current flowing through the three-phase power generation winding will generate an electromagnetic counter torque proportional to the current. This counter torque acts directly on the flywheel and gear shaft, thereby forming an electromagnetic damping force on the rack and structural side.

[0022] The electromagnetic damping torque is expressed as:

[0023] ;

[0024] in, The current absorbed by the main power DC / DC converter. This represents the motor torque constant;

[0025] The electromagnetic damping torque is converted into structural side damping force via a gear mechanism. ,get:

[0026] ;

[0027] in, The gear pitch circle radius, The equivalent damping coefficient is adjusted in real time by the MCU controller. This represents the relative displacement between the connection points at both ends of the inertial-capacitive damping device. The time derivative of the relative displacement;

[0028] Equivalent damping coefficient The energy absorption current is determined by the main power DC / DC converter, and the energy absorption current is calculated and output in real time by the MCU controller based on the structural motion state.

[0029] The present invention also provides a control method for an energy recovery type adjustable damping inertial capacitance vibration reduction device, comprising the following steps:

[0030] Collect flywheel speed, DC bus voltage, current, and structural motion signals;

[0031] Calculate the target damping current based on the structural motion state;

[0032] The energy-absorbing current of the main power DC / DC converter is controlled to follow the target damping current;

[0033] When the DC bus voltage or energy storage unit voltage exceeds the threshold, the braking resistor branch is activated for safe energy dissipation.

[0034] The recovered energy is stored in the energy storage unit and used to power the MCU controller.

[0035] Therefore, the present invention employs the above-described energy recovery type adjustable damping inertial capacitance vibration reduction device and its control method, which has the following beneficial effects:

[0036] (1) By increasing the electromagnetic braking torque under speed reversal and impact conditions, the sudden change of inertial capacitive force and mechanical jamming when gear backlash is involved can be effectively suppressed;

[0037] (2) By setting the main power DC / DC converter and putting it in current control mode, the equivalent inertial capacitance damping force can be continuously adjusted, thus avoiding the problem of fixed inertial capacitance parameters in traditional flywheel inertial capacitance devices.

[0038] (3) By transmitting the damping energy to the energy storage unit through the main power DC / DC converter, a unified channel for damping and energy recovery is realized, thereby improving the system's energy utilization efficiency;

[0039] (4) The system’s operational safety under extreme conditions is improved by connecting the braking resistor branch in parallel to the DC bus.

[0040] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of an energy recovery type adjustable damping inertial capacitance vibration reduction device according to an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the upper and lower racks according to an embodiment of the present invention;

[0043] Figure 3 The circuit diagrams are for the power processing and storage components and the control and sensing components according to embodiments of the present invention.

[0044] Figure 4 This is a flowchart illustrating a control method for an energy-recovery type adjustable damping inertial capacitance vibration reduction device according to an embodiment of the present invention.

[0045] Figure Labels

[0046] 1. Base plate; 2. Mechanical transmission and flywheel assembly; 21. Upper rack; 22. Lower rack; 23. Small transmission wheel; 24. Gear shaft; 25. Flywheel; 26. Rack reinforcement; 27. Connector; 3. Axial flux motor assembly; 31. Rotor; 32. Stator; 33. Three-phase generator winding; 4. Power processing and energy storage assembly; 41. Three-phase rectifier bridge; 42. DC bus; 43. DC bus capacitor; 44. Main power DC / DC converter; 45. Energy storage unit; 46. Braking resistor branch; 461. Power switch; 462. Braking resistor; 5. Control and sensing assembly; 51. MCU controller; 52. Gate driver; 53. Speed ​​sensor; 54. Voltage sensor; 55. Current sensor. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0048] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0049] Example

[0050] like Figure 1-2 As shown, the present invention provides an energy recovery type adjustable damping inertial capacitance vibration reduction device, including a base plate 1, a mechanical transmission and flywheel assembly 2, an axial flux motor assembly 3, an electrical energy processing and storage assembly 4, and a control and sensing assembly 5. The components work together to form a structure-electrical-control integrated inertial capacitance damping system.

[0051] The mechanical transmission and flywheel assembly 2 includes an upper rack 21, a lower rack 22, small transmission wheels 23, a gear shaft 24, and a flywheel 25. The upper rack 21 and the lower rack 22 are symmetrically arranged below the base plate 1, and are connected by rack reinforcement 26. The two ends of the upper rack 21 and the lower rack 22 are connected by connector 27. The movement direction of the upper rack 21 and the lower rack 22 is consistent with the relative displacement direction of the controlled structure. The two small transmission wheels 23 mesh with the upper rack 21 and the lower rack 22 respectively, and are fixedly installed on the gear shaft 24. The gear shaft 24 is mounted on the base plate 1 through bearings and is used to convert the linear motion of the racks into rotational motion.

[0052] A large transmission wheel is rotatably mounted on the base plate 1. A small transmission wheel 23 is connected to the large transmission wheel via a belt drive. A flywheel 25 is fixedly mounted above the large transmission wheel, forming an integral structure with it. During the reciprocating motion of the upper rack 21 and lower rack 22, a rotational inertia effect is generated, thus creating an equivalent inertial reaction force on the structural side. The two large transmission wheels can drive flywheels 25 with different rotational inertia at different displacements, thereby achieving adjustable inertial capacity. The large transmission wheel and the small transmission wheel 23 are coaxially fixed by a belt, amplifying the speed of the flywheel 25 relative to the speed of the small transmission wheel 23, thereby amplifying the equivalent inertial mass and inertial reaction force of the flywheel 25.

[0053] The axial flux motor assembly 3 includes a rotor 31 and a stator 32. The rotor 31 is fixedly mounted on the flywheel 25, meaning that the rotor 31 and the flywheel 25 are coaxially and fixedly connected. Several permanent magnets are evenly spaced on the rotor 31. The stator 32 is fixedly mounted above the base plate 1 and positioned outside the rotor 31, forming an axial air gap with the rotor 31. A three-phase power generation winding 33 is wound on the stator 32. When the flywheel 25 and the rotor 31 rotate, the three-phase power generation winding 33 cuts the permanent magnets to generate a rotating magnetic field, thereby generating three-phase alternating current in the three-phase power generation winding 33. The flywheel 25 is coaxially and fixedly connected to the rotor 31, ensuring that the rotational motion of the flywheel 25 is synchronized with the rotational motion of the rotor 31.

[0054] The power processing and storage component 4 and the control and sensing component 5 are located on the same side of the base plate.

[0055] like Figure 3 As shown, the power processing and storage component 4 includes a three-phase rectifier bridge 41, a DC bus 42, a DC bus capacitor 43, a main power DC / DC converter 44, an energy storage unit 45, and a braking resistor branch 46. The three-phase rectifier bridge 41, DC bus capacitor 43, main power DC / DC converter 44, energy storage unit 45, and braking resistor branch 46 form a multi-branch parallel power processing topology around the DC bus. The DC bus capacitor 43 is a capacitive DC bus capacitor.

[0056] The three-phase generator windings 33 are connected to the input terminals of the three-phase rectifier bridge 41 via wires. The three-phase rectifier bridge 41 performs full-wave rectification on the three-phase AC power, and its output terminals form DC positive and DC negative terminals respectively. The DC positive and DC negative terminals together constitute the DC bus 42 of the shock absorption device.

[0057] A DC bus capacitor 43 is connected in parallel between the DC positive and DC negative terminals. The DC bus capacitor 43 is used to suppress the voltage ripple generated during the rectification process and to absorb transient power changes under rapid deceleration or impact conditions of the flywheel 25.

[0058] The input terminals of the main power DC / DC converter 44 are connected to the positive and negative terminals of the DC bus 42, respectively, and its output terminal is connected to the energy storage unit 45. When the main power DC / DC converter 44 is working, it is in current control mode. By adjusting the magnitude of the current absorbed from the DC bus 42, the electromagnetic damping level is continuously adjusted, and the absorbed electrical energy is transferred to the energy storage unit 45.

[0059] The energy storage unit 45 includes a supercapacitor, a battery, or a combination of both, for storing electrical energy recovered during the damping process and providing energy support for the control and sensing components 5.

[0060] The braking resistor branch 46 is composed of a power switch 461 and a braking resistor 462 connected in series. Its two ends are connected in parallel to the positive and negative terminals of the DC bus 42, respectively. When the voltage of the DC bus 42 exceeds the preset threshold or the energy storage unit 45 is in a saturated state, the excess energy is dissipated in the braking resistor 462 by turning on the power switch 461.

[0061] The control and sensing component 5 includes an MCU controller 51, a gate driver 52, a speed sensor 53, a voltage sensor 54, a current sensor 55, and a structural motion sensor.

[0062] The speed sensor 53 is located above the rotor 31 and is used to detect the angular velocity of the flywheel 25 or the rotor 31; the voltage sensor 54 and the current sensor 55 are used to detect the voltage and current of the DC bus 42 and the status of the energy storage unit 45; the structural motion sensor is used to detect the displacement, velocity or acceleration signals of the structure.

[0063] The MCU controller 51 is connected to the main power DC / DC converter 44 and the power switch 461 in the braking resistor branch 46 via the gate driver 52, and is used to execute the damping control algorithm and energy management strategy.

[0064] The working principle of electromagnetic damping: The three-phase AC power output from the three-phase generating winding 33 is rectified to form the DC bus voltage 42. When the main power DC / DC converter 44 is working, it is in current control mode and absorbs the target current from the DC bus 42 under the control of the MCU controller 51.

[0065] Since the rotor 31 is rigidly connected to the flywheel 25, the current flowing through the three-phase power generation winding 33 will generate an electromagnetic counter torque proportional to the current. This counter torque acts directly on the flywheel 25 and the gear shaft 24, thereby forming an electromagnetic damping force on the rack and structural side.

[0066] The electromagnetic damping torque can be expressed as:

[0067] ;

[0068] in, The current absorbed by the main power DC / DC converter 44 This represents the motor torque constant.

[0069] The electromagnetic damping torque is converted into structural side damping force via a gear mechanism. ,get:

[0070] ;

[0071] in, The gear pitch circle radius, The equivalent damping coefficient is adjusted in real time by the MCU controller 51. This represents the relative displacement between the connection points at both ends of the inertial-capacitive damping device. This represents the time derivative of the relative displacement.

[0072] Equivalent damping coefficient The energy absorption current is determined by the main power DC / DC converter 44, which is calculated and output in real time by the MCU controller 51 based on the structural motion state.

[0073] By adjusting the current command of the main power DC / DC converter 44, its input current is made consistent with the target damping current, thereby increasing the equivalent damping coefficient. The electromagnetic damping can be adjusted and controlled as the operating conditions change continuously.

[0074] Inertial capacitive force mutation and jamming suppression principle: When the structural speed approaches zero or a commutation occurs, due to the transmission backlash in the rack-pinion mechanism, the flywheel inertial capacitive system is prone to a sudden change in inertial capacitive force at the moment of re-meshing. In this invention, the MCU controller 51 monitors the flywheel speed, structural acceleration, and their high-frequency components to identify in advance the impending speed commutation or impact condition of the structure. Under this condition, the MCU controller 51 increases the current absorbed by the main power DC / DC converter 44, causing the axial flux motor assembly 3 to generate a larger electromagnetic counter-torque, applying a braking effect to the flywheel 25, thereby reducing the rate of change of angular momentum of the flywheel 25 before the backlash re-engages in the transmission. Because the change in angular velocity of the flywheel 25 is constrained in advance, the inertial capacitive force exhibits a continuous change when it is retransmitted to the structural side, thus effectively suppressing sudden changes in inertial capacitive force, mechanical impact, and motion jamming. Since the rate of change of angular momentum of the flywheel 25 is actively limited by the electromagnetic braking effect before the backlash re-engages in the transmission, the change of inertial capacities at the moment of gear meshing is continuous, which physically avoids sudden changes in inertial capacities and mechanical shocks.

[0075] Reference Figure 4 The present invention also provides a control method for an energy recovery type adjustable damping inertial capacitance vibration reduction device, comprising the following steps:

[0076] Collect flywheel speed, DC bus voltage, current, and structural motion signals;

[0077] Calculate the target damping current based on the structural motion state;

[0078] The energy-absorbing current of the main power DC / DC converter is controlled to follow the target damping current;

[0079] When the DC bus voltage or energy storage unit voltage exceeds the threshold, the braking resistor branch is activated for safe energy dissipation.

[0080] The recovered energy is stored in the energy storage unit and used to power the MCU controller.

[0081] Therefore, the present invention adopts the above-mentioned energy recovery type adjustable damping inertial capacitance vibration reduction device and its control method, and improves the stability and engineering applicability of the device under complex dynamic conditions through the integrated design of structure-electricity-control.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. An energy-recovery type adjustable damping inertial capacitance vibration reduction device, characterized in that: It includes a base plate, a mechanical transmission and flywheel assembly, an axial flux motor assembly, an energy processing and storage assembly, and a control and sensing assembly, wherein the energy processing and storage assembly and the control and sensing assembly are disposed on the same side of the base plate; The mechanical transmission and flywheel assembly includes an upper rack, a lower rack, small transmission wheels, a gear shaft, and a flywheel. The upper rack and the lower rack are symmetrically arranged below the base plate. The two small transmission wheels mesh with the upper rack and the lower rack respectively and are fixedly installed on the gear shaft. The gear shaft is mounted on the base plate via bearings. The upper rack and the lower rack are connected by a rack reinforcement member, and the two ends of the upper rack and the lower rack are connected by a connector; a large transmission wheel is rotatably mounted on the base plate, and a small transmission wheel is connected to the large transmission wheel by a belt drive; the flywheel is fixedly installed above the large transmission wheel and forms an integral structure with the large transmission wheel. During the reciprocating motion of the upper rack and the lower rack, a rotational inertia effect is generated, and an equivalent inertial reaction force is formed on the structural side; The axial flux motor assembly includes a rotor and a stator. The rotor is fixedly mounted on the flywheel, and a plurality of permanent magnets are evenly spaced on the rotor. The stator is fixedly mounted above the base plate and located on the outside of the rotor, forming an axial air gap with the rotor. The stator is wound with a three-phase power generation winding. When the flywheel and rotor rotate, the three-phase power generation winding cuts the permanent magnet to generate a rotating magnetic field and generates three-phase alternating current in the three-phase power generation winding. The power processing and energy storage component includes a three-phase rectifier bridge, a DC bus, a DC bus capacitor, a main power DC / DC converter, an energy storage unit, and a braking resistor branch. The three-phase rectifier bridge, the DC bus capacitor, the main power DC / DC converter, the energy storage unit, and the braking resistor branch form a multi-branch parallel power processing topology around the DC bus. The energy storage unit includes a supercapacitor, a battery, or a combination of both, for storing electrical energy recovered during the damping process and providing energy support for the control and sensing components.

2. The energy recovery type adjustable damping inertial capacitance vibration reduction device according to claim 1, characterized in that: The three-phase generator windings are connected to the input terminals of the three-phase rectifier bridge via wires. The three-phase rectifier bridge performs full-wave rectification on the three-phase AC power. The output terminals of the three-phase rectifier bridge form a DC positive terminal and a DC negative terminal, respectively. The DC positive terminal and the DC negative terminal together constitute the DC bus.

3. The energy recovery type adjustable damping inertial capacitance vibration reduction device according to claim 2, characterized in that: The DC bus capacitor is connected in parallel between the DC positive terminal and the DC negative terminal. The DC bus capacitor is used to suppress the voltage ripple generated during the rectification process and to absorb transient power changes under rapid deceleration or impact conditions of the flywheel. The input terminals of the main power DC / DC converter are connected to the positive and negative terminals of the DC bus, respectively, and the output terminal of the main power DC / DC converter is connected to the energy storage unit. When the main power DC / DC converter is working, it is in current control mode. By adjusting the magnitude of the current absorbed from the DC bus, the electromagnetic damping level is continuously adjusted, and the absorbed electrical energy is transferred to the energy storage unit.

4. The energy recovery type adjustable damping inertial capacitance vibration reduction device according to claim 1, characterized in that: The braking resistor branch is composed of a power switch and a braking resistor connected in series. The two ends of the braking resistor branch are connected in parallel to the positive and negative terminals of the DC bus, respectively. When the DC bus voltage exceeds a preset threshold or the energy storage unit is in a saturated state, the excess energy is dissipated in the braking resistor by turning on the power switch.

5. The energy recovery type adjustable damping inertial capacitance vibration reduction device according to claim 4, characterized in that: The control and sensing components include an MCU controller, a gate driver, a speed sensor, a voltage sensor, a current sensor, and a structural motion sensor. The MCU controller is connected to the main power DC / DC converter and the power switch through the gate driver, and is used to execute the damping control algorithm and energy management strategy; the speed sensor is set above the rotor and is used to detect the angular velocity of the flywheel or the rotor; the voltage sensor and the current sensor are used to detect the DC bus voltage, current and energy storage unit status; the structural motion sensor is used to detect the displacement, velocity or acceleration signal of the structure.

6. The energy recovery type adjustable damping inertial capacitance vibration reduction device according to claim 5, characterized in that: The three-phase AC power output from the three-phase generator winding is rectified to form the DC bus voltage. When the main power DC / DC converter is working, it is in current control mode and absorbs the target current from the DC bus under the control of the MCU controller. Since the rotor and flywheel are rigidly connected, the current flowing through the three-phase power generation winding will generate an electromagnetic counter torque proportional to the current. This counter torque acts directly on the flywheel and gear shaft, thereby forming an electromagnetic damping force on the rack and structural side. The electromagnetic damping torque is expressed as: ； in, The current absorbed by the main power DC / DC converter. This represents the motor torque constant; The electromagnetic damping torque is converted into structural side damping force via a gear mechanism. ,get: ； in, The gear pitch circle radius, The equivalent damping coefficient is adjusted in real time by the MCU controller. This represents the relative displacement between the connection points at both ends of the inertial-capacitive damping device. The time derivative of the relative displacement; Equivalent damping coefficient The energy absorption current is determined by the main power DC / DC converter, and the energy absorption current is calculated and output in real time by the MCU controller based on the structural motion state.

7. A control method for an energy-recovery type adjustable damping capacitive vibration damping device, using the energy-recovery type adjustable damping capacitive vibration damping device as described in any one of claims 1-6, characterized in that, Includes the following steps: Collect flywheel speed, DC bus voltage, current, and structural motion signals; Calculate the target damping current based on the structural motion state; The energy-absorbing current of the main power DC / DC converter is controlled to follow the target damping current; When the DC bus voltage or energy storage unit voltage exceeds the threshold, the braking resistor branch is activated for safe energy dissipation. The recovered energy is stored in the energy storage unit and used to power the MCU controller.

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