CN104343878A - System and method for controlling vibration energy - Google Patents

System and method for controlling vibration energy Download PDF

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Publication number
CN104343878A
CN104343878A CN201410520188.2A CN201410520188A CN104343878A CN 104343878 A CN104343878 A CN 104343878A CN 201410520188 A CN201410520188 A CN 201410520188A CN 104343878 A CN104343878 A CN 104343878A
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China
Prior art keywords
vibration
storage battery
energy
damping force
control
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CN201410520188.2A
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CN104343878B (en
Inventor
李川
倪茂飞
陈旭东
喻其炳
陈志强
冯鑫
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Chongqing Tongyushi Technology Co ltd
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Chongqing Technology and Business University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The invention provides a system and a method for controlling vibration energy. When vibration force currently generated by a vibration system is not larger than the maximum electricity generation damping force under the action of a storage battery, the vibration energy is utilized to drive an oil pump oil motor to drive a generator motor to act, the generator motor is in an electricity generation state and charges the storage battery; and when the vibration force currently generated by the vibration system is larger than the maximum electricity generation damping force under the action of the storage battery, electric energy in the storage battery is utilized to drive and control the generator motor to generate vibration damping force so as to offset the vibration force. Therefore, the vibration energy is converted into the electric energy to be stored in the storage battery, the energy is reused, further, when the vibration energy is larger, the electric energy in the storage battery can be utilized to drive and control the generator motor to generate the vibration damping force to offset the vibration force, and compared with a scheme that external energy is required to be introduced to generate the vibration damping force in the prior art, the energy is saved.

Description

Control system and method for vibration energy
Technical Field
The invention relates to the technical field of vibration reduction control, in particular to a system and a method for controlling vibration energy.
Background
Vibrations are widely present in the course of movement of objects, for example, when a motor vehicle is running, the excitation generated by the uneven road surface is transmitted to the vehicle body through the wheels, which causes the vehicle body to vibrate and affects the comfort, safety and maneuverability of the motor vehicle. Since vibration is an unbalanced energy form, in order to achieve vibration damping, the existing vibration energy control methods mainly include an energy outflow vibration control method and an energy inflow vibration control method.
The energy outflow vibration control method is to lead vibration energy out of a vibration system, for example, a damping vibration absorber arranged between an automobile body and wheels converts mechanical energy of the vibration energy into heat energy, sound energy and the like to be dissipated so as to generate damping force. The energy inflow vibration control method is a method of introducing external energy into a vibration system, for example, active vibration damping is performed by generating a damping force in a direction opposite to a vibration direction using a generator, and vibration energy transmitted from a vehicle to a vehicle body is cancelled by introducing the damping force.
However, it is not easy to find that the energy outflow vibration control method only consumes part of the vibration energy, and the rest unbalanced vibration energy cannot be eliminated, so that the vibration control effect is limited, and energy is wasted in a mode of dissipating the vibration energy through a damping shock absorber and the like. The vibration energy is offset by introducing the damping force which is opposite to the vibration direction and equal to the vibration force, and the vibration control method by utilizing the energy inflow can achieve better vibration damping effect compared with the vibration control method by utilizing the energy outflow. However, since the energy inflow vibration control method needs to introduce external energy to generate damping force, the waste of vibration energy is not only loaded, but also other energy wastes are loaded.
Disclosure of Invention
In view of the above, the present invention provides a system and a method for controlling vibration energy, so as to solve the problems in the prior art that the vibration control effect is not good and energy is wasted by using an energy outflow vibration control method, and energy is wasted by using an energy outflow vibration control method. The technical scheme is as follows:
based on one aspect of the invention, the invention provides a control system of vibration energy, which comprises an upper connector, a lower connector and a vibration system, wherein the upper connector and the lower connector are respectively connected with the vibration system, the vibration system comprises a piston rod, compressed gas, hydraulic oil, a piston overflow valve, a piston check valve, an inner cylinder and an outer cylinder, wherein,
the upper connector is connected with one end of the piston rod, the piston is arranged at the other end of the piston rod, and the piston overflow valve and the piston check valve are arranged on the piston; the inner cylinder one-way valve is arranged at the bottom of the inner cylinder; the outer cylinder is concentrically arranged outside the inner cylinder; the outer cylinder is connected with the lower connector; the hydraulic oil is filled in the cylinder body of the inner cylinder and a part of the cylinder body of the outer cylinder; the other part of the outer cylinder is filled with the compressed air;
the control system further comprises:
the oil pump oil motor is connected with the upper cavity of the inner cylinder and the lower part of the outer cylinder through oil pipes;
a generator motor directly connected to the oil pump motor;
a bidirectional converter electrically connected to the generator motor;
the storage battery is connected with the bidirectional converter;
the vibration sensor is connected with the vibration system and used for detecting a vibration signal;
the micro control unit MCU is connected with the vibration sensor, is used for receiving the detected vibration signal sent by the vibration sensor, is simultaneously connected with the storage battery, and is used for detecting charge state signals at two ends of the storage battery;
the MCU is used for controlling and adjusting a control angle of the bidirectional converter when the vibration force currently generated by the vibration system is larger than the maximum power generation damping force under the action of the storage battery, so that the generator motor is controlled to generate damping force under the electric energy driving of the storage battery to offset the vibration force;
and when the vibration force generated by the vibration system at present is not greater than the maximum power generation damping force under the action of the storage battery, the control angle of the bidirectional converter is controlled and adjusted, so that the vibration energy generated by the vibration system at present is utilized to drive the oil pump oil motor to drive the generator motor to act, and the storage battery is charged.
Preferably, the generator further comprises a rectifier electrically connected with the generator motor, and a dissipation resistor connected with the rectifier in series; wherein,
the MCU is also connected with the rectifier;
the MCU is used for controlling and adjusting a control angle of the bidirectional converter when the vibration force currently generated by the vibration system is larger than the maximum power generation damping force under the combined action of the storage battery and the energy consumption resistor, so that the generator motor is controlled to generate damping force under the electric energy drive of the storage battery to offset the vibration force;
and when the vibration force generated by the vibration system at present is not greater than the maximum power generation damping force under the combined action of the storage battery and the energy consumption resistor and is not greater than the maximum power generation damping force under the action of the storage battery, the control angle of the bidirectional converter is controlled and adjusted, so that the vibration energy generated by the vibration system at present drives the oil pump motor to drive the power generation motor to act, and the storage battery is charged.
And when the vibration force generated by the vibration system at present is not larger than the maximum power generation damping force under the combined action of the storage battery and the energy consumption resistor and is larger than the maximum power generation damping force under the action of the storage battery, the control angle of the bidirectional converter and the control angle of the rectifier are controlled and adjusted at the same time, so that one part of the vibration energy generated by the vibration system at present is used for driving the oil pump oil motor to drive the power generation motor to act, the storage battery is charged, and the other part of the vibration energy is consumed through the energy consumption resistor.
Preferably, the closing direction of the piston check valve is the same as that of the inner cylinder check valve, and is opposite to that of the piston overflow valve.
According to another aspect of the present invention, there is provided a method for controlling vibration energy, which is applied to the control system of vibration energy described in the above claims, the method including: acquiring a current vibration signal a (t) and a vibration force signal F (t) of a vibration system; wherein t is greater than or equal to 0;
acquiring a current state of charge signal SoC (t) of the storage battery;
calculating to obtain the maximum power generation damping force F1(t +1) under the current action of the storage battery according to the current state of charge signal SoC (t) of the storage battery and the parameter information of the storage battery;
selecting an external vibration reduction algorithm according to the current application scene of the vibration system, and calculating the vibration reduction force F (t +1) required by the control system of the current vibration energy by using the external vibration reduction algorithm according to the vibration signal a (t) and the vibration force signal F (t);
judging whether the vibration damping force F (t +1) is greater than the maximum power generation damping force F1(t + 1);
if the voltage is larger than the preset value, controlling the rectification control voltage C1(t) of the bidirectional converter to be equal to 0, and disconnecting a path for the vibration energy generated by the vibration system to flow to the storage battery;
calculating a control angle of inversion control of the bidirectional converter according to the vibration reduction force F (t +1), converting the control angle into an inversion control voltage C2(t), and controlling to open a path of energy of the storage battery flowing to the vibration system;
outputting an inversion control Pulse Width Modulation (PWM) signal corresponding to the inversion control voltage C2(t) to control and adjust an inversion control angle of the bidirectional converter;
driving a generator motor to work in an electric state by using the electric energy of the storage battery so as to drive an oil pump motor to work in an oil pump state, thereby generating a damping force opposite to the vibration direction of the damping force F (t + 1);
if not, controlling the inversion control voltage C2(t) of the bidirectional converter to be equal to 0, and disconnecting the energy of the storage battery from flowing to the vibration system;
calculating to obtain a rectification control voltage C1(t) of the bidirectional converter according to the damping force F (t +1) and a current state of charge signal SoC (t) of the storage battery, and controlling to open a path for vibration energy generated by the vibration system to flow to the storage battery;
outputting a PWM signal corresponding to the rectification control voltage C1(t) of the bidirectional converter to control and adjust the rectification control angle of the bidirectional converter;
and driving the oil pump motor to drive the generator motor to work in a power generation state by utilizing the vibration energy currently generated by the vibration system so as to charge the storage battery.
Preferably, the control system of the vibration energy further comprises a rectifier electrically connected to the generator motor, and a dissipation resistor connected in series with the rectifier; the MCU is also connected with the rectifier;
the method further comprises the following steps:
calculating to obtain the maximum power generation damping force F2(t +1) under the combined action of the storage battery and the energy consumption resistor according to the current state of charge signal SoC (t) of the storage battery, the parameter information of the storage battery and the resistance value of the energy consumption resistor;
at this time, the method further comprises:
firstly, judging whether the vibration reduction force F (t +1) is larger than the maximum power generation damping force F2(t +1) under the combined action of the storage battery and the energy consumption resistor;
if the control voltage C2(t) is greater than 0, the passage of the vibration energy generated by the vibration system to the energy consumption resistor is cut off, and the passage of the vibration energy generated by the vibration system to the storage battery is cut off by controlling the rectification control voltage C1(t) of the bidirectional converter to be equal to 0;
further, a control angle of inversion control of the bidirectional converter is calculated according to the vibration reduction force F (t +1), the control angle is converted into inversion control voltage C2(t), and a path of energy of the storage battery flowing to the vibration system is controlled to be opened;
outputting an inversion control Pulse Width Modulation (PWM) signal corresponding to the inversion control voltage C2(t) to control and adjust an inversion control angle of the bidirectional converter;
driving a generator motor to work in an electric state by using the electric energy of the storage battery so as to drive an oil pump motor to work in an oil pump state, thereby generating a damping force opposite to the vibration direction of the damping force F (t + 1);
if not, judging whether the vibration reduction force F (t +1) is larger than the maximum power generation damping force F1(t +1) under the current action of the storage battery;
if the vibration reduction force F (t +1) is not larger than the maximum power generation damping force F1(t +1) under the current action of the storage battery, controlling the inversion control voltage C2(t) of the bidirectional converter to be equal to 0, and disconnecting the path of the energy flow of the storage battery to the vibration system;
further, according to the vibration reduction force F (t +1) and the current state of charge signal SoC (t) of the storage battery, a rectification control voltage C1(t) of the bidirectional converter is obtained through calculation, and a path for the vibration energy generated by the vibration system to flow to the storage battery is controlled to be opened;
outputting a PWM signal corresponding to the rectification control voltage C1(t) of the bidirectional converter to control and adjust the rectification control angle of the bidirectional converter;
the vibration energy generated by the vibration system at present is used for driving the oil pump oil motor to drive the generator motor to work in a power generation state, so that the storage battery is charged;
if the vibration reduction force F (t +1) is larger than the maximum power generation damping force F1(t +1) under the current action of the storage battery, controlling the inversion control voltage C2(t) of the bidirectional converter to be equal to 0, and disconnecting the path of the energy of the storage battery flowing to the vibration system;
selecting the maximum value of the rectification control voltage C1(t) of the bidirectional converter;
further, according to the difference between the vibration reduction force F (t +1) and the maximum power generation damping force F2(t +1) under the combined action of the storage battery and the energy consumption resistor, calculating to obtain a control voltage C1(t) corresponding to a control angle of the rectifier, and controlling to open a passage through which vibration energy generated by the vibration system flows to the energy consumption resistor;
outputting PWM signals corresponding to the control voltage C1(t) of the rectifier and the rectification control voltage C1(t) of the bidirectional converter respectively so as to control and adjust the bidirectional converter to be in a rectification state completely, and the rectifier to be in a controllable rectification state;
and one part of the vibration energy currently generated by the vibration system is used for driving the oil pump oil motor to drive the generator motor to work in a power generation state so as to charge the storage battery, and the other part of the vibration energy is consumed by the energy consumption resistor.
Preferably, the parameter information of the storage battery includes capacity parameter information of the storage battery and/or performance parameter information of the storage battery.
Preferably, the external damping algorithm comprises a skyhook control algorithm.
Preferably, the generating of the damping force in a direction opposite to the vibration direction of the damping force F (t +1) includes:
and generating the damping force with the vibration direction opposite to that of the damping force F (t +1) and the vibration force equal to that of the damping force F (t + 1).
Preferably, the control angles of the bidirectional converter and the rectifier are adjustable.
Preferably, the method further comprises the following steps:
judging whether the external vibration reduction algorithm requires parking;
if stopping is required, stopping the control of the current vibration energy and collecting various parameters at the next t +1 moment;
if no parking is required, returning to the step of receiving a vibration signal a (t) and a vibration force signal F (t) of the vibration system detected by the vibration sensor.
By applying the technical scheme, when the vibration force generated by the vibration system at present is greater than the maximum power generation damping force under the action of the storage battery, namely the current vibration energy of the vibration system is small, the vibration energy is utilized to drive the oil pump motor to drive the generator motor to start to act, so that the generator motor works in a power generation state to charge the storage battery; when the vibration force generated by the vibration system at present is larger than the maximum power generation damping force under the action of the storage battery, namely the vibration energy of the vibration system at present is larger, the electric energy in the storage battery is used for driving and controlling the generator motor to generate the vibration reduction force so as to offset the vibration force. Therefore, the vibration energy is converted into the electric energy to be stored in the storage battery, the energy is recycled, when the vibration energy is larger, the electric energy in the storage battery can be used for driving and controlling the generator motor to generate the vibration reduction force to counteract the vibration force, and compared with the scheme that the external energy is required to be introduced to generate the vibration reduction force in the prior art, the energy is saved. The invention realizes the variable control of the energy inflow and outflow links.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a vibration energy control system according to the present invention;
FIG. 2 is a flow chart of a method of controlling vibration energy according to the present invention;
FIG. 3 is a schematic view of another embodiment of a system for controlling vibrational energy in accordance with the present invention;
fig. 4 is another flowchart of a method for controlling vibration energy according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Before the present invention is introduced, the inventor firstly needs to explain that: in the prior art, when vibration reduction is realized, the traditional vibration reducer converts vibration energy of a vibration-reduced object into heat energy to be dissipated, or inputs energy which is equal to the vibration energy of the vibration-reduced object in magnitude and opposite in direction to offset the energy. The essence of the invention is to provide a novel hydraulic damper, which converts vibration energy into electric energy for storage preferentially according to the vibration condition of the damped object, and inputs opposite energy to the damped object (the vibration system is generally called in the following process description) for cancellation if the converted electric energy is not enough to cancel out the whole vibration energy.
The technical point to be protected by the invention comprises that a set of device comprising a generator motor, a hydraulic motor pump and other equipment is utilized to realize the vibration reduction of the object to be subjected to vibration reduction through the bidirectional energy switching between the object to be subjected to vibration reduction and the vibration reducer.
In order to facilitate better understanding of the present invention, the following embodiments of the present invention are described by taking an application scenario of automobile vibration reduction as an example. Of course, for those skilled in the art, the present invention is not limited to the field of automobile vibration reduction technology, and the present invention may also be used as a damper for a bridge stay cable to reduce the vibration transmitted from the bridge to the stay cable. The application field of the invention is very wide, the invention does not limit the application field of the invention, and any technical field or scene in which the invention can be applied belongs to the protection scope of the invention.
Example one
Referring to fig. 1, a schematic structural diagram of a vibration energy control system according to the present invention is shown, including: go up connector 100, lower connector 200 and vibration system 300, wherein, vibration system 300 specifically includes: a piston rod 301, compressed gas 302, hydraulic oil 303, a piston 304, a piston relief valve 305, a piston check valve 306, an inner cylinder check valve 307, an inner cylinder 308, and an outer cylinder 309.
Specifically, in this embodiment, the upper connector 100 is connected to one end of a piston rod 301, a piston 304 is mounted on the other end of the piston rod 301, and a piston overflow valve 305 and a piston check valve 306 are disposed on the piston 304; the inner cylinder check valve 307 is arranged at the bottom of the inner cylinder 308; an outer cylinder 309 is concentrically mounted outside the inner cylinder 308; the outer cylinder 309 is connected with the lower connector 200; hydraulic oil 303 is filled in the cylinder body of the inner cylinder 308 and a part of the cylinder body of the outer cylinder 309; the other part of the outer cylinder 309 is filled with compressed air 302 to compensate for the volume change of oil in the cylinder caused by the vibration driving the piston 304.
In the present embodiment, the vibration of the vibration system 300 is from the relative reciprocating displacement between the upper connector 100 and the lower connector 200, and the generated vibration drives the piston 304 to reciprocate up and down in the inner cylinder 308. The piston 304 divides the inner cylinder 308 into an upper chamber 3081 and a lower chamber 3082.
Further, the control system further includes: an oil pump motor 400, a generator motor 500, a bidirectional converter 600, a battery 700, a vibration sensor 800, and an MCU (Micro Controller Unit) 900.
In the present invention, the upper chamber 3081 of the inner cylinder 308 and the lower portion of the outer cylinder 309 are connected to the oil pump motor 400 through oil pipes, respectively, and the oil pump motor 400 is directly connected to the generator motor 500. When the oil liquid between the inner cylinder 308 and the outer cylinder 309 flows to drive the oil pump oil motor 400 to work in the oil motor state, the generator motor 500 works in the power generation state, and when the storage battery 700 supplies power to the generator motor 500, the generator motor 500 works in the power-driven state, and at this time, the oil pump oil motor 400 realizes the oil pump function.
In the present invention, the closing direction of the piston check valve 306 is the same as the closing direction of the inner cylinder check valve 307, and is opposite to the closing direction of the piston relief valve 305, so that the oil pump motor 400 rotates in the same rotation direction no matter the vibration between the upper connector 100 and the lower connector 200 is in compression motion or stretching motion, and when the vibration energy of the vibration system 300 is too large, the piston relief valve 305 opens, and the unloading of the too large vibration energy is realized.
The bidirectional converter 600 is electrically connected to the generator motor 500, and the bidirectional converter 600 is connected to the battery 700.
In this embodiment, two energy flow paths are included, the first path being: electric energy of the battery 700 → the bidirectional converter 600, the bidirectional converter 600 at this time operates in the inverter state → the generator motor 500 at this time, the generator motor 500 at this time operates in the electric state → the oil pump motor 400, the oil pump motor 400 at this time operates in the oil pump state → the piston rod 301 under the driving of the generator motor 500, and finally, a counteracting effect on the vibration energy is generated between the upper connector 100 and the lower connector 200; the second path is: the vibration energy between the upper connector 100 and the lower connector 200 passes through the piston rod 301 → the oil pump motor 400, the oil pump motor 400 works in the oil motor state → the generator motor 500, the oil pump motor 400 drives the generator motor 500 to work in the power generation state → the bidirectional converter 600, and the bidirectional converter 600 works in the rectification state → the battery 700, so as to charge the battery 700 to generate the consumption effect of the vibration energy.
The vibration sensor 800 is installed on an object to be damped, and in this embodiment, may be installed on the vibration system 300, and is configured to detect a vibration signal a (t) and a vibration force signal f (t) generated by the vibration system 300 in real time; wherein t is greater than or equal to 0.
Meanwhile, the vibration sensor 800 is connected to the MCU900, and transmits the detected vibration signal a (t) and the vibration force signal f (t) to the MCU 900.
The MCU900 is connected to the vibration sensor 800 and the battery 700, and is configured to detect a state of charge signal soc (t) at two ends of the battery 700.
In this embodiment, a resistor may be externally connected to two ends of the battery 700, and a voltage signal on the resistor is input to the MCU900, so as to detect the state of charge signals soc (t) at two ends of the battery 700.
In this embodiment, the MCU900 may calculate the maximum power generation damping force F1(t +1) under the current action of the storage battery 700 by detecting the current state of charge signals soc (t) of the storage battery 700 obtained at the two ends of the storage battery 700 and according to the parameter information of the storage battery 700; the MCU900 may also refer to the current application scenario of the vibration system 300, automatically select an external damping algorithm, and calculate the damping force F (t +1) required by the control system to obtain the current vibration energy according to the received vibration signal a (t) and the received vibration force signal F (t) sent by the vibration sensor 800 by using the selected external damping algorithm.
Specifically, in the present invention, when the vibration force F (t +1) currently generated by the vibration system 300 is greater than the maximum power generation damping force F1(t +1) applied by the battery 700, the MCU900 controls and adjusts the control angle of the bidirectional converter 600 so as to control the generator motor 500 to generate a damping force to counteract the vibration force, i.e., open the first path, under the electric power driving of the battery 700; when the vibration force currently generated by the vibration system 300 is not greater than the maximum power generation damping force F1(t +1) under the action of the battery 700, the control adjusts the control angle of the bidirectional converter 600, so that the vibration energy currently generated by the vibration system 300 drives the oil pump motor 400 to drive the generator motor 500 to act, the battery 700 is charged, and the second path is opened.
To more clearly describe the embodiment, please refer to fig. 2, which shows a flowchart of a method for controlling vibration energy according to the present invention, including:
in step 101, the MCU900 obtains a current vibration signal a (t) and a vibration force signal f (t) of the vibration system 300. Wherein t is greater than or equal to 0.
In this embodiment, the vibration sensor 800 detects the vibration signal a (t) and the vibration force signal f (t) of the vibration system 300 in real time, and transmits the detected current vibration signal a (t) and vibration force signal f (t) of the vibration system 300 to the MCU 900.
In step 102, the MCU900 obtains the current state of charge signal soc (t) of the battery 700.
In the present embodiment, the current state of charge signal soc (t) of the battery 700 is obtained by detecting both ends of the battery 700.
Obviously, the relationship between the step 101 and the step 102 is only exemplary, and it is needless to say that the step 102 may be executed first and then the step 101 may be executed, or the step 102 and the step 101 may be executed simultaneously, and the present invention is not limited herein.
In step 103, the MCU900 calculates the maximum power generation damping force F1(t +1) under the current action of the battery 700 according to the current state of charge signal soc (t) of the battery 700 and the parameter information of the battery 700.
The parameter information of the battery 700 may include capacity parameter information of the battery 700 and/or performance parameter information of the battery 700.
Here, the maximum power generation damping force F1(t +1) currently acting on the battery 700 represents the maximum damping force that can be generated by the battery 700 at present.
Step 104, referring to the current application scenario of the vibration system 300, the MCU900 selects an external vibration reduction algorithm, and calculates the vibration reduction force F (t +1) required by the control system of the current vibration energy according to the vibration signal a (t) and the vibration force signal F (t) by using the external vibration reduction algorithm.
It should be noted that, when the present invention is applied to different application scenarios, an external vibration reduction algorithm corresponding to the application scenario needs to be selected for calculation. The present embodiment is described by taking the vibration reduction of the automobile as an example, and therefore, preferably, the external vibration reduction algorithm in the present invention may be a skyhook control algorithm.
In step 105, the MCU900 determines whether the damping force F (t +1) is greater than the maximum power generation damping force F1(t + 1). If so, go to step 106, and if not, go to step 110.
In step 106, the MCU900 controls the rectified control voltage C1(t) of the bidirectional converter 600 to be equal to 0, and cuts off the flow path of the vibration energy generated from the vibration system 300 to the battery 700.
In the present embodiment, when the damping force F (t +1) is greater than the maximum power generation damping force F1(t +1), which indicates that the battery 700 is not enough to consume the vibration energy generated by the vibration system 300, the battery 700 needs to be controlled to drive the bidirectional converter 600 to generate the damping force to counteract the vibration force.
In step 107, the MCU900 calculates a control angle of the inverter control of the bidirectional converter 600 according to the damping force F (t +1), converts the control angle into an inverter control voltage C2(t), and controls to open a path through which the energy of the battery 700 flows to the vibration system 300.
The control angle of the inversion control of the bidirectional converter 600 is the duty ratio of the inversion control of the bidirectional converter 600. The present invention adjustably opens a path for energy of the battery 700 to flow to the vibration system 300 by adjusting the control angle through inverting the control voltage C2 (t).
In step 108, the MCU900 outputs a PWM (inversion control pulse width modulation) signal corresponding to the inversion control voltage C2(t) to control and adjust the inversion control angle of the bidirectional converter 600.
In step 109, the MCU900 drives the generator motor 500 to operate in the motoring state by using the electric power of the battery 700 to drive the oil pump motor 400 to operate in the oil pump state, thereby generating a damping force in a direction opposite to the vibration direction of the damping force F (t + 1).
Preferably, the invention can generate a vibration reduction force with the vibration reduction force F (t +1) in the opposite vibration direction and the same vibration force.
In step 110, the MCU900 controls the inversion control voltage C2(t) of the bidirectional converter 600 to be equal to 0, and disconnects the path through which the energy of the battery 700 flows to the vibration system 300.
Step 111, the MCU900 calculates a rectification control voltage C1(t) of the bidirectional converter 600 according to the damping force F (t +1) and the current state of charge signal soc (t) of the battery 700, and controls to open a path through which the vibration energy generated by the vibration system 300 flows to the battery 700.
In step 112, the MCU900 outputs a PWM signal corresponding to the rectification control voltage C1(t) of the bidirectional converter 600 to control and adjust the rectification control angle of the bidirectional converter 600.
In step 113, the MCU900 drives the oil pump motor 400 to drive the generator motor 500 to operate in a power generating state by using the vibration energy currently generated by the vibration system 300, so as to charge the battery 700.
Therefore, by applying the above technical solution of the present invention, in the control system of vibration energy provided by the present invention, when the vibration force currently generated by the vibration system 300 is greater than the maximum power generation damping force under the action of the battery 700, that is, when the current vibration energy of the vibration system 300 is small, the vibration energy is used to drive the oil-pumped motor 400 to drive the generator-motor 500 to start to operate, so that the generator-motor 500 operates in a power generation state to charge the battery 700; when the vibration force generated by the vibration system 300 is larger than the maximum power generation damping force under the action of the battery 700, that is, the vibration energy of the vibration system 300 is larger, the generator motor 500 is driven and controlled by the electric energy in the battery 700 to generate a damping force to counteract the vibration force. Therefore, the invention realizes the purpose of converting the vibration energy into the electric energy to be stored in the storage battery 700, realizes the recycling of the energy, and saves the energy compared with the prior art which needs to introduce the external energy to generate the damping force when the vibration energy is larger and the electric energy in the storage battery 700 can be used for driving and controlling the generator motor 500 to generate the damping force to counteract the vibration force. The invention realizes the variable control of the energy inflow and outflow links.
Example two
On the basis of the above embodiment, please refer to fig. 3, which shows another structural schematic diagram of a control system for vibration energy according to the present invention, further comprising: a rectifier 1000 electrically connected to the generator motor 500, and a dissipation resistor 1100 connected in series with the rectifier 1000. The MCU900 is also connected to the rectifier 1000.
At this time, the MCU900 is configured to, when the vibration force currently generated by the vibration system 300 is greater than the maximum power generation damping force under the combined action of the battery 700 and the energy consumption resistor 1100, control and adjust the control angle of the bidirectional converter 600, so that the generator motor 500 is controlled to generate a damping force to counteract the vibration force under the electric power driving of the battery 700; when the vibration force currently generated by the vibration system 300 is not greater than the maximum power generation damping force under the combined action of the storage battery 700 and the energy consumption resistor 1100 and not greater than the maximum power generation damping force under the action of the storage battery 700, controlling and adjusting the control angle of the bidirectional converter 600, so that the vibration energy currently generated by the vibration system 300 is utilized to drive the oil pump motor 400 to drive the power generation motor 500 to act, and charging the storage battery 700; and when the vibration force currently generated by the vibration system 300 is not greater than the maximum power generation damping force under the combined action of the storage battery 700 and the energy consumption resistor 1100 and is greater than the maximum power generation damping force under the action of the storage battery 700, simultaneously controlling and adjusting the control angle of the bidirectional converter 600 and the control angle of the rectifier 1000, so that part of the vibration energy currently generated by the vibration system 300 is used for driving the oil pump motor 400 to drive the generator motor 500 to act, the storage battery 700 is charged, and the other part is consumed through the energy consumption resistor 1100.
To more clearly explain the embodiment, please refer to fig. 4, which shows another flowchart of a method for controlling vibration energy according to the present invention, including:
in step 201, the MCU900 obtains a current vibration signal a (t) and a vibration force signal f (t) of the vibration system 300. Wherein t is greater than or equal to 0.
In step 202, the MCU900 obtains the current state of charge signal soc (t) of the battery 700.
In step 203, the MCU900 calculates the maximum power generation damping force F1(t +1) under the current action of the battery 700 according to the current state of charge signal soc (t) of the battery 700 and the parameter information of the battery 700, and calculates the maximum power generation damping force F2(t +1) under the combined action of the battery 700 and the energy consumption resistor 1100 according to the current state of charge signal soc (t) of the battery 700, the parameter information of the battery 700, and the resistance of the energy consumption resistor 1100.
The parameter information of the battery 700 may include capacity parameter information of the battery 700 and/or performance parameter information of the battery 700.
Here, the maximum power generation damping force F1(t +1) currently acting on the battery 700 represents the maximum damping force that can be generated by the battery 700 at present.
The maximum power generation damping force F2(t +1) under the combined action of the battery 700 and the energy consumption resistor 1100 represents the maximum damping force that can be generated by the battery 700 and the energy consumption resistor 1100 at present.
In step 204, the MCU900 selects an external damping algorithm with reference to the current application scenario of the vibration system 300, and calculates the damping force F (t +1) required by the control system of the current vibration energy according to the vibration signal a (t) and the vibration force signal F (t) by using the external damping algorithm.
Preferably, the external damping algorithm is a skyhook control algorithm.
In step 205, the MCU900 determines whether the damping force F (t +1) is greater than the maximum power generation damping force F2(t +1) under the combined action of the battery 700 and the energy consumption resistor 1100. If so, go to step 206, and if not, go to step 210.
In step 206, the MCU900 controls the control voltage C2(t) of the rectifier 1000 to be equal to 0, and cuts off the path of the vibration energy generated by the vibration system 300 flowing to the energy consumption resistor 1100, and controls the rectification control voltage C1(t) of the bidirectional converter 600 to be equal to 0, and cuts off the path of the vibration energy generated by the vibration system 300 flowing to the battery 700.
In the present embodiment, when the damping force F (t +1) is greater than the maximum power generation damping force F2(t +1) under the combined action of the battery 700 and the dissipation resistor 1100, which indicates that the battery 700 and the dissipation resistor 1100 are not working together enough to dissipate the vibration energy generated by the vibration system 300, the battery 700 needs to be controlled to drive the bidirectional converter 600 to generate the damping force to counteract the vibration force.
In step 207, the MCU900 calculates a control angle of the inverter control of the bidirectional converter 600 according to the damping force F (t +1), converts the control angle into an inverter control voltage C2(t), and controls to open a path through which the energy of the battery 700 flows to the vibration system 300.
In step 208, the MCU900 outputs a PWM signal corresponding to the inversion control voltage C2(t) to control and adjust the inversion control angle of the bidirectional converter 600.
In step 209, the MCU900 drives the generator motor 500 to operate in the motoring state by using the electric power of the battery 700 to drive the oil pump motor 400 to operate in the oil pump state, thereby generating a damping force in a direction opposite to the vibration direction of the damping force F (t + 1).
Preferably, the invention can generate a vibration reduction force with the vibration reduction force F (t +1) in the opposite vibration direction and the same vibration force.
In step 210, the MCU900 determines whether the damping force F (t +1) is greater than the maximum power generation damping force F1(t +1) under the current action of the battery 700. If not, go to step 211, and if so, go to step 215.
In step 211, the MCU900 controls the inversion control voltage C2(t) of the bidirectional converter 600 to be equal to 0, and disconnects the path through which the energy of the battery 700 flows to the vibration system.
In step 212, the MCU900 calculates a rectification control voltage C1(t) of the bidirectional converter 600 according to the damping force F (t +1) and the current state of charge signal soc (t) of the battery 700, and controls to open a path through which the vibration energy generated by the vibration system 300 flows to the battery 700.
In step 213, the MCU900 outputs a PWM signal corresponding to the rectification control voltage C1(t) of the bidirectional converter 600 to control and adjust the rectification control angle of the bidirectional converter 600.
In the present invention, the control angles of the bidirectional converter 600 and the rectifier 1000 are adjustable.
In step 214, the MCU900 drives the oil pump motor 400 to drive the generator motor 500 to operate in a power generating state by using the vibration energy currently generated by the vibration system 300, so as to charge the battery 700.
In step 215, the MCU900 controls the inversion control voltage C2(t) of the bidirectional converter 600 to be equal to 0, and disconnects the path through which the energy of the battery 700 flows to the vibration system 300.
In this embodiment, when the state of charge of the battery 700 is not sufficient to dissipate the vibration energy, i.e., the battery 700 is fully or nearly fully charged, the energy of the generator-motor 500 may also flow to the rectifier and be converted into heat energy through the dissipation resistor 1100 to dissipate the vibration energy.
In step 216, the MCU900 selects the maximum value of the rectified control voltage C1(t) of the bidirectional converter 600.
At this time, the path through which the vibration energy of the vibration system flows out to battery 700 is completely opened.
In step 217, the MCU900 calculates a control voltage C1(t) corresponding to the control angle of the rectifier 1000 according to the difference between the damping force F (t +1) and the maximum power generation damping force F2(t +1) under the combined action of the battery 700 and the dissipation resistor 1100, and controls to open a path through which the vibration energy generated by the vibration system 300 flows to the dissipation resistor 1100.
In step 218, the MCU900 outputs PWM signals corresponding to the control voltage C1(t) of the rectifier 1000 and the rectification control voltage C1(t) of the bidirectional converter 600, respectively, so as to control the bidirectional converter 600 to operate in a rectification state and the rectifier 1000 to operate in a controllable rectification state.
In this embodiment, a part of the vibration energy currently generated by the vibration system 300 is used to drive the oil pump motor 400 to drive the generator motor 500 to operate in a power generation state, so as to charge the battery 700, and another part is consumed by the energy consumption resistor 1100.
In step 219, the MCU900 determines whether the external damping algorithm requires a stop. If parking is required, step 220 is executed, and if parking is not required, the process returns to step 201.
In step 220, the MCU900 stops controlling the current vibration energy and collects the parameters at the next time t + 1.
By applying the technical scheme of the invention, the vibration energy can be preferentially selected to flow into the storage battery 700 for recycling according to the vibration excitation state, so that unbalanced vibration energy is converted into useful electric energy, the recycling of energy is realized, and energy is saved.
Secondly, since the external vibration excitation is changed frequently, when the vibration energy is small, the present invention switches to the energy flowing state, i.e. the vibration energy flows into the battery 700 to charge, i.e. the vibration energy is converted into electric energy to be stored in the battery 700. Meanwhile, the limited charge capacity of the storage battery 700 is considered, and when the charge state of the storage battery 700 is not enough to consume vibration energy, the energy consumption resistor 1100 is designed to consume unbalanced vibration energy; when the vibration energy is large and the energy outflow method cannot realize vibration control, the electric energy in the storage battery 700 is used for driving the generator motor 500 to generate damping force, so that the energy inflow state is switched to counteract the vibration energy. In addition, in order to adapt to working requirements under different vibration excitations, the invention also carries out variable control on the energy inflow and outflow link by adjusting the size of the control angle. Therefore, the invention not only realizes the switching control of the inflow and outflow of the vibration energy, but also realizes the variable adjustment of the energy inflow and outflow link according to the change of the external vibration excitation, and is a vibration control method with better adaptability.
Finally, the variable regulation of the vibration energy inflow and outflow is realized by adopting the regulation of the control angles of the bidirectional converter 600 and the rectifier 1000, and the invention is a pure electric regulation scheme. Compared with the traditional mechanical adjusting mechanism, the invention is not influenced by mechanical adjusting delay, the response speed is greatly improved, and the invention can be suitable for vibration control with higher frequency.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the device-like embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The present invention provides a system and a method for controlling vibration energy, which are described in detail above, and the present invention is described in detail by applying specific examples to explain the principle and the embodiments of the present invention, and the description of the above examples is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A control system of vibration energy comprises an upper connector, a lower connector and a vibration system, wherein the upper connector and the lower connector are respectively connected with the vibration system, and is characterized in that the vibration system comprises a piston rod, compressed gas, hydraulic oil, a piston overflow valve, a piston check valve, an inner cylinder and an outer cylinder, wherein,
the upper connector is connected with one end of the piston rod, the piston is arranged at the other end of the piston rod, and the piston overflow valve and the piston check valve are arranged on the piston; the inner cylinder one-way valve is arranged at the bottom of the inner cylinder; the outer cylinder is concentrically arranged outside the inner cylinder; the outer cylinder is connected with the lower connector; the hydraulic oil is filled in the cylinder body of the inner cylinder and a part of the cylinder body of the outer cylinder; the other part of the outer cylinder is filled with the compressed air;
the control system further comprises:
the oil pump oil motor is connected with the upper cavity of the inner cylinder and the lower part of the outer cylinder through oil pipes;
a generator motor directly connected to the oil pump motor;
a bidirectional converter electrically connected to the generator motor;
the storage battery is connected with the bidirectional converter;
the vibration sensor is connected with the vibration system and used for detecting a vibration signal;
the micro control unit MCU is connected with the vibration sensor, is used for receiving the detected vibration signal sent by the vibration sensor, is simultaneously connected with the storage battery, and is used for detecting charge state signals at two ends of the storage battery;
the MCU is used for controlling and adjusting a control angle of the bidirectional converter when the vibration force currently generated by the vibration system is larger than the maximum power generation damping force under the action of the storage battery, so that the generator motor is controlled to generate damping force under the electric energy driving of the storage battery to offset the vibration force;
and when the vibration force generated by the vibration system at present is not greater than the maximum power generation damping force under the action of the storage battery, the control angle of the bidirectional converter is controlled and adjusted, so that the vibration energy generated by the vibration system at present is utilized to drive the oil pump oil motor to drive the generator motor to act, and the storage battery is charged.
2. The control system of claim 1, further comprising a rectifier electrically connected to the generator motor, and a dissipation resistor connected in series with the rectifier; wherein,
the MCU is also connected with the rectifier;
the MCU is used for controlling and adjusting a control angle of the bidirectional converter when the vibration force currently generated by the vibration system is larger than the maximum power generation damping force under the combined action of the storage battery and the energy consumption resistor, so that the generator motor is controlled to generate damping force under the electric energy drive of the storage battery to offset the vibration force;
when the vibration force currently generated by the vibration system is not greater than the maximum power generation damping force under the combined action of the storage battery and the energy consumption resistor and not greater than the maximum power generation damping force under the action of the storage battery, controlling and adjusting a control angle of the bidirectional converter so as to drive the oil pump motor to drive the power generation motor to act by utilizing the vibration energy currently generated by the vibration system and charge the storage battery;
and when the vibration force generated by the vibration system at present is not larger than the maximum power generation damping force under the combined action of the storage battery and the energy consumption resistor and is larger than the maximum power generation damping force under the action of the storage battery, the control angle of the bidirectional converter and the control angle of the rectifier are controlled and adjusted at the same time, so that one part of the vibration energy generated by the vibration system at present is used for driving the oil pump oil motor to drive the power generation motor to act, the storage battery is charged, and the other part of the vibration energy is consumed through the energy consumption resistor.
3. The control system according to claim 1 or 2, wherein the piston check valve is closed in the same direction as the cylinder check valve and in the opposite direction to the closing direction of the piston spill valve.
4. A method for controlling vibration energy, which is applied to the vibration energy control system of claim 1, the method comprising:
acquiring a current vibration signal a (t) and a vibration force signal F (t) of a vibration system; wherein t is greater than or equal to 0;
acquiring a current state of charge signal SoC (t) of the storage battery;
calculating to obtain the maximum power generation damping force F1(t +1) under the current action of the storage battery according to the current state of charge signal SoC (t) of the storage battery and the parameter information of the storage battery;
selecting an external vibration reduction algorithm according to the current application scene of the vibration system, and calculating the vibration reduction force F (t +1) required by the control system of the current vibration energy by using the external vibration reduction algorithm according to the vibration signal a (t) and the vibration force signal F (t);
judging whether the vibration damping force F (t +1) is greater than the maximum power generation damping force F1(t + 1);
if the voltage is larger than the preset value, controlling the rectification control voltage C1(t) of the bidirectional converter to be equal to 0, and disconnecting a path for the vibration energy generated by the vibration system to flow to the storage battery;
calculating a control angle of inversion control of the bidirectional converter according to the vibration reduction force F (t +1), converting the control angle into an inversion control voltage C2(t), and controlling to open a path of energy of the storage battery flowing to the vibration system;
outputting an inversion control Pulse Width Modulation (PWM) signal corresponding to the inversion control voltage C2(t) to control and adjust an inversion control angle of the bidirectional converter;
driving a generator motor to work in an electric state by using the electric energy of the storage battery so as to drive an oil pump motor to work in an oil pump state, thereby generating a damping force opposite to the vibration direction of the damping force F (t + 1);
if not, controlling the inversion control voltage C2(t) of the bidirectional converter to be equal to 0, and disconnecting the energy of the storage battery from flowing to the vibration system;
calculating to obtain a rectification control voltage C1(t) of the bidirectional converter according to the damping force F (t +1) and a current state of charge signal SoC (t) of the storage battery, and controlling to open a path for vibration energy generated by the vibration system to flow to the storage battery;
outputting a PWM signal corresponding to the rectification control voltage C1(t) of the bidirectional converter to control and adjust the rectification control angle of the bidirectional converter;
and driving the oil pump motor to drive the generator motor to work in a power generation state by utilizing the vibration energy currently generated by the vibration system so as to charge the storage battery.
5. The control method according to claim 4, wherein the control system of the vibration energy further comprises a rectifier electrically connected to the generator motor, and a dissipation resistor connected in series with the rectifier; the MCU is also connected with the rectifier;
the method further comprises the following steps:
calculating to obtain the maximum power generation damping force F2(t +1) under the combined action of the storage battery and the energy consumption resistor according to the current state of charge signal SoC (t) of the storage battery, the parameter information of the storage battery and the resistance value of the energy consumption resistor;
at this time, the method further comprises:
firstly, judging whether the vibration reduction force F (t +1) is larger than the maximum power generation damping force F2(t +1) under the combined action of the storage battery and the energy consumption resistor;
if the control voltage C2(t) is greater than 0, the passage of the vibration energy generated by the vibration system to the energy consumption resistor is cut off, and the passage of the vibration energy generated by the vibration system to the storage battery is cut off by controlling the rectification control voltage C1(t) of the bidirectional converter to be equal to 0;
further, a control angle of inversion control of the bidirectional converter is calculated according to the vibration reduction force F (t +1), the control angle is converted into inversion control voltage C2(t), and a path of energy of the storage battery flowing to the vibration system is controlled to be opened;
outputting an inversion control Pulse Width Modulation (PWM) signal corresponding to the inversion control voltage C2(t) to control and adjust an inversion control angle of the bidirectional converter;
driving a generator motor to work in an electric state by using the electric energy of the storage battery so as to drive an oil pump motor to work in an oil pump state, thereby generating a damping force opposite to the vibration direction of the damping force F (t + 1);
if not, judging whether the vibration reduction force F (t +1) is larger than the maximum power generation damping force F1(t +1) under the current action of the storage battery;
if the vibration reduction force F (t +1) is not larger than the maximum power generation damping force F1(t +1) under the current action of the storage battery, controlling the inversion control voltage C2(t) of the bidirectional converter to be equal to 0, and disconnecting the path of the energy flow of the storage battery to the vibration system;
further, according to the vibration reduction force F (t +1) and the current state of charge signal SoC (t) of the storage battery, a rectification control voltage C1(t) of the bidirectional converter is obtained through calculation, and a path for the vibration energy generated by the vibration system to flow to the storage battery is controlled to be opened;
outputting a PWM signal corresponding to the rectification control voltage C1(t) of the bidirectional converter to control and adjust the rectification control angle of the bidirectional converter;
the vibration energy generated by the vibration system at present is used for driving the oil pump oil motor to drive the generator motor to work in a power generation state, so that the storage battery is charged;
if the vibration reduction force F (t +1) is larger than the maximum power generation damping force F1(t +1) under the current action of the storage battery, controlling the inversion control voltage C2(t) of the bidirectional converter to be equal to 0, and disconnecting the path of the energy of the storage battery flowing to the vibration system;
selecting the maximum value of the rectification control voltage C1(t) of the bidirectional converter;
further, according to the difference between the vibration reduction force F (t +1) and the maximum power generation damping force F2(t +1) under the combined action of the storage battery and the energy consumption resistor, calculating to obtain a control voltage C1(t) corresponding to a control angle of the rectifier, and controlling to open a passage through which vibration energy generated by the vibration system flows to the energy consumption resistor;
outputting PWM signals corresponding to the control voltage C1(t) of the rectifier and the rectification control voltage C1(t) of the bidirectional converter respectively so as to control and adjust the bidirectional converter to be in a rectification state completely, and the rectifier to be in a controllable rectification state;
and one part of the vibration energy currently generated by the vibration system is used for driving the oil pump oil motor to drive the generator motor to work in a power generation state so as to charge the storage battery, and the other part of the vibration energy is consumed by the energy consumption resistor.
6. The control method according to claim 4, characterized in that the parameter information of the storage battery includes capacity parameter information of the storage battery and/or performance parameter information of the storage battery.
7. The control method of claim 4, wherein the external damping algorithm comprises a skyhook control algorithm.
8. The control method according to claim 4, wherein the generating a damping force that is in an opposite vibration direction to the damping force F (t +1) includes:
and generating the damping force with the vibration direction opposite to that of the damping force F (t +1) and the vibration force equal to that of the damping force F (t + 1).
9. The control method according to claim 5, wherein the control angles of the bidirectional converter and the rectifier are adjustable.
10. The control method according to any one of claims 4 to 9, characterized by further comprising:
judging whether the external vibration reduction algorithm requires parking;
if stopping is required, stopping the control of the current vibration energy and collecting various parameters at the next t +1 moment;
if no parking is required, returning to the step of receiving a vibration signal a (t) and a vibration force signal F (t) of the vibration system detected by the vibration sensor.
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CN107939893A (en) * 2017-12-29 2018-04-20 深圳职业技术学院 Active suspension system, damper and damping means
CN107939893B (en) * 2017-12-29 2024-03-15 深圳职业技术学院 Active suspension system, shock absorber and shock absorbing component
CN109707579A (en) * 2018-12-14 2019-05-03 常熟理工学院 A kind of the damper power generator and its control mode of recoverable automobile vibrational energy
CN109812531A (en) * 2018-12-29 2019-05-28 清科智能悬架系统（苏州）有限公司 A kind of hydraulic active damper
CN110410261A (en) * 2019-07-22 2019-11-05 江苏科技大学 Self-adaptive damping variable vortex-induced vibration energy conversion device
CN117072605A (en) * 2023-08-22 2023-11-17 浙江朝日减振器有限公司 High-stability oil-gas mixing vibration damper
CN117072605B (en) * 2023-08-22 2024-06-11 浙江朝日减振器有限公司 High-stability oil-gas mixing vibration damper

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