CN-121977046-A - Energy recovery type adjustable damping inertial damping device and control method thereof

CN121977046ACN 121977046 ACN121977046 ACN 121977046ACN-121977046-A

Abstract

The invention discloses an energy recovery type adjustable damping inertial damping device and a control method thereof, belonging to the technical field of vibration control, the device comprises a bottom plate, a mechanical transmission and flywheel assembly, an axial flux motor assembly, an electric energy processing and energy storage assembly and a control and sensing assembly, the components cooperate to form a structure-electricity-control integrated inertial damping system, and the mechanical transmission and flywheel component comprises an upper rack, a lower rack, a small transmission wheel, a gear shaft and a flywheel. According to the energy recovery type adjustable damping inertia damping device and the control method thereof, through real-time adjustment of electromagnetic damping current, continuous adjustment and control of inertia damping force are achieved under the condition that the structural parameters of a flywheel are not changed, therefore, inertia Rong Li mutation under the working conditions of backlash switching and impact is effectively restrained, and the running stability and the energy utilization efficiency of the device are improved.

Inventors

CHEN SHIKAI
Hao Linfei
HE HUI
LIU CHUNYU

Assignees

广州大学

Dates

Publication Date: 20260505
Application Date: 20260408

Claims (10)

1. The energy recovery type adjustable damping inertial damping device is characterized by comprising a bottom plate, a mechanical transmission and flywheel assembly, an axial flux motor assembly, an electric energy processing and energy storage assembly and a control and sensing assembly, wherein the electric energy processing and energy storage assembly and the control and sensing assembly are arranged on the same side of the bottom plate; The mechanical transmission and flywheel assembly comprises an upper rack, a lower rack, a small transmission wheel, a gear shaft and a flywheel, wherein the upper rack and the lower rack are symmetrically arranged below the bottom plate respectively, the two small transmission wheels are meshed with the upper rack and the lower rack respectively and are fixedly arranged on the gear shaft, and the gear shaft is arranged on the bottom plate through a bearing.
2. The energy recovery type adjustable damping inertial damping device is characterized in that the upper rack is connected with the lower rack through a rack reinforcing piece, two ends of the upper rack are connected with two ends of the lower rack through connecting pieces, a large driving wheel is rotatably arranged on the bottom plate, the small driving wheel is connected with the large driving wheel through a belt transmission, the flywheel is fixedly arranged above the large driving wheel, an integrated structure is formed with the large driving wheel, a rotational inertia effect is generated in the reciprocating motion process of the upper rack and the lower rack, and an equivalent inertial counter force is formed on the structural side.
3. The energy recovery type adjustable damping inertial damping device according to claim 2, wherein the axial flux motor assembly comprises a rotor and a stator, the rotor is fixedly arranged on the flywheel, a plurality of permanent magnets are equidistantly arranged on the rotor, the stator is fixedly arranged above the bottom plate and arranged on the outer side of the rotor, and an axial air gap is formed between the stator and the rotor; and when the flywheel and the rotor rotate, the three-phase power generation winding cuts the permanent magnet to generate a rotating magnetic field, and three-phase alternating current is generated in the three-phase power generation winding.
4. The energy recovery type adjustable damping inertial damping device according to claim 3, wherein the electric energy processing and energy storage component comprises a three-phase rectifier bridge, a direct current bus capacitor, a main power DC/DC converter, an energy storage unit and a braking resistor branch, and the three-phase rectifier bridge, the direct current bus capacitor, the main power DC/DC converter, the energy storage unit and the braking resistor branch form a multi-branch parallel electric energy processing topological structure around the direct current bus; The energy storage unit comprises a super capacitor, a battery or a combination of the super capacitor and the battery, and is used for storing electric energy recovered in the damping process and providing energy support for the control and sensing assembly.
5. The energy-recovery type adjustable damping inertial damping device according to claim 4, wherein the three-phase power generation windings are connected to the input ends of the three-phase rectifier bridge through wires respectively, the three-phase rectifier bridge performs full-wave rectification on three-phase alternating current, the output ends of the three-phase rectifier bridge form a direct current positive electrode and a direct current negative electrode respectively, and the direct current positive electrode and the direct current negative electrode form the direct current bus together.
6. The energy recovery type adjustable damping inertial damping device according to claim 4, wherein the direct current bus capacitor is arranged in parallel between the direct current positive electrode and the direct current negative electrode, and is used for inhibiting voltage ripple generated in the rectification process and absorbing transient power change under the working condition of rapid deceleration or impact of a flywheel; The input end of the main power DC/DC converter is respectively connected with the positive electrode and the negative electrode of the direct current bus, the output end of the main power DC/DC converter is connected with the energy storage unit, the main power DC/DC converter is in a current control mode when in operation, and the electromagnetic damping level is continuously adjusted by adjusting the current absorbed from the direct current bus, and meanwhile the absorbed electric energy is transmitted to the energy storage unit.
7. The energy-recovery type adjustable damping inertial damping device according to claim 4, wherein the braking resistor branch is formed by connecting a power switch and a braking resistor in series, two ends of the braking resistor branch are respectively connected with an anode and a cathode of the direct current bus in parallel, and when the voltage of the direct current bus exceeds a preset threshold value or the energy storage unit is in a saturated state, surplus energy is dissipated in the braking resistor by conducting the power switch.
8. The energy recovery type adjustable damping inertial damping device according to claim 4, wherein the control and sensing assembly comprises an MCU controller, a gate driver, a rotation speed sensor, a voltage sensor, a current sensor and a structural motion sensor; The MCU controller is connected with the main power DC/DC converter and the power switch through the gate driver and used for executing a damping control algorithm and an energy management strategy, the rotating speed sensor is arranged above the rotor and used for detecting the angular speed of the flywheel or the rotor, the voltage sensor and the current sensor are used for detecting the voltage, the current and the state of the energy storage unit of the direct current bus, and the structural motion sensor is used for detecting displacement, speed or acceleration signals of a structure.
9. The energy recovery type adjustable damping inertial damping device according to claim 8, wherein three-phase alternating current output by the three-phase power generation winding is rectified to form direct current bus voltage, the main power DC/DC converter is in a current control mode when in operation, and current with a target size is absorbed from the direct current bus under the control of the MCU controller; Because the rotor is rigidly connected with the flywheel, the current flowing in the three-phase power generation winding generates electromagnetic counter moment which is proportional to the current, and the counter moment directly acts on the flywheel and the gear shaft, so that electromagnetic damping force is formed on the rack and the structure side; The electromagnetic damping torque is expressed as: ; Wherein, the The current absorbed by the main power DC/DC converter, Representing a motor torque constant; The electromagnetic damping torque is converted into a structural side damping force through a gear mechanism The method comprises the following steps of: ; Wherein, the Is the pitch circle radius of the gear wheel, For the equivalent damping coefficient adjusted in real time by the MCU controller, For the relative displacement between the connecting points at the two ends of the inertial damping device, A time derivative representing the relative displacement; equivalent damping coefficient The energy-absorbing current of the main power DC/DC converter is determined, and the energy-absorbing current is calculated and output in real time by the MCU controller according to the structural motion state.
10. A control method of an energy recovery type adjustable damping inertial damping device, applying an energy recovery type adjustable damping inertial damping device according to any one of claims 1-9, characterized by comprising the steps of: collecting flywheel rotating speed, direct current bus voltage, current and structural motion signals; calculating a target damping current according to the structural motion state; Controlling the energy absorption current of the main power DC/DC converter to follow the target damping current; When the voltage of the direct current bus or the voltage of the energy storage unit exceeds a threshold value, the braking resistor branch is put into the braking resistor branch to perform safe energy consumption; the recovered energy is stored to an energy storage unit and used for the MCU controller to supply power.

Description

Energy recovery type adjustable damping inertial damping device and control method thereof Technical Field The invention relates to the technical field of vibration control, in particular to an energy recovery type adjustable damping inertial damping device and a control method thereof. Background The inertial damping device can generate inertial reaction force related to relative acceleration when the structure moves relatively, so that the vibration control capability of the structure is effectively improved without obviously increasing the mass of the device. In the prior art, flywheel type inertial damping devices generally convert linear displacement of a structure into rotational motion of a flywheel through a mechanical transmission mechanism such as a gear rack or a screw rod, and form larger equivalent inertial mass by utilizing rotational inertia of the flywheel. However, the existing flywheel type inertial damping device still has the defects that the abrupt change of the flywheel inertia Rong Li is easily caused by unavoidable transmission gaps in mechanical transmission mechanisms such as a gear rack and the like at the speed reversing and around zero speed, so that the mechanical impact and the movement jamming are caused, and the running stability of the device is reduced. Therefore, it is necessary to provide a novel inertial damping device capable of effectively suppressing abrupt change of the inertial damping Rong Li and a control method thereof. Disclosure of Invention The invention aims to provide an energy recovery type adjustable damping inertial damping device and a control method thereof, which are used for solving the problems in the background technology. In order to achieve the above purpose, the invention provides an energy recovery type adjustable damping inertial damping device, which comprises a bottom plate, a mechanical transmission and flywheel assembly, an axial flux motor assembly, an electric energy processing and energy storage assembly and a control and sensing assembly, wherein the electric energy processing and energy storage assembly and the control and sensing assembly are arranged on the same side of the bottom plate; The mechanical transmission and flywheel assembly comprises an upper rack, a lower rack, a small transmission wheel, a gear shaft and a flywheel, wherein the upper rack and the lower rack are symmetrically arranged below the bottom plate respectively, the two small transmission wheels are meshed with the upper rack and the lower rack respectively and are fixedly arranged on the gear shaft, and the gear shaft is arranged on the bottom plate through a bearing. Preferably, the upper rack and the lower rack are connected through a rack reinforcement, and the two ends of the upper rack and the two ends of the lower rack are connected through a connecting piece; The base plate is rotatably provided with a large driving wheel, the small driving wheel is in driving connection with the large driving wheel through a belt, the flywheel is fixedly arranged above the large driving wheel, an integrated structure is formed with the large driving wheel, a rotational inertia effect is generated in the reciprocating motion process of the upper rack and the lower rack, and an equivalent inertial counter force is formed at the structural side. Preferably, the axial flux motor assembly comprises a rotor and a stator, wherein the rotor is fixedly arranged on the flywheel, a plurality of permanent magnets are equidistantly arranged on the rotor, the stator is fixedly arranged above the bottom plate and arranged on the outer side of the rotor, and an axial air gap is formed between the stator and the rotor; and when the flywheel and the rotor rotate, the three-phase power generation winding cuts the permanent magnet to generate a rotating magnetic field, and three-phase alternating current is generated in the three-phase power generation winding. Preferably, the electric energy processing and energy storage component comprises a three-phase rectifier bridge, a direct current bus capacitor, a main power DC/DC converter, an energy storage unit and a brake resistor branch, wherein the three-phase rectifier bridge, the direct current bus capacitor, the main power DC/DC converter, the energy storage unit and the brake resistor branch form an electric energy processing topological structure with multiple parallel branches around the direct current bus; The energy storage unit comprises a super capacitor, a battery or a combination of the super capacitor and the battery, and is used for storing electric energy recovered in the damping process and providing energy support for the control and sensing assembly. Preferably, the three-phase power generation winding is connected to an input end of the three-phase rectifier bridge through wires respectively, the three-phase rectifier bridge performs full-wave rectification on three-phase alternating current, an output end of the three-p