阅读说明：本技术 一种铁路运输车辆的主动电磁作动器 (Active electromagnetic actuator of railway transport vehicle ) 是由 周劲松 张展飞 宫岛 孙煜 尤泰文 于 2019-09-23 设计创作，主要内容包括：本发明涉及一种铁路运输车辆的主动电磁作动器,其与铁路运输车辆的被动二系悬挂并联,并被安装于铁路运输车辆的转向架和车体之间,包括电磁铁组件以及与电磁铁组件电性连接的电气组件,电磁铁组件包括：用于与铁路运输车辆的转向架端连接的铁芯、绕设于铁芯上的励磁线圈、用于与铁路运输车辆的车体端连接的衔铁。与现有技术相比,本发明充分利用空气弹簧内空间、提高了车辆的平稳性指标、提高了车辆的安全性。(The invention relates to an active electromagnetic actuator of a railway transport vehicle, which is connected in parallel with a passive secondary suspension of the railway transport vehicle and is arranged between a bogie and a vehicle body of the railway transport vehicle, and the active electromagnetic actuator comprises an electromagnet assembly and an electrical assembly electrically connected with the electromagnet assembly, wherein the electromagnet assembly comprises: the magnetic field excitation device comprises an iron core, a magnetic excitation coil and an armature, wherein the iron core is used for being connected with a bogie end of a railway transport vehicle, the magnetic excitation coil is wound on the iron core, and the armature is used for being connected with a vehicle body end of the railway transport vehicle. Compared with the prior art, the invention fully utilizes the space in the air spring, improves the stability index of the vehicle and improves the safety of the vehicle.)

1. An active electromagnetic actuator of a railway transportation vehicle, characterized in that it is connected in parallel with a passive secondary suspension of the railway transportation vehicle and is installed between a bogie and a vehicle body of the railway transportation vehicle, comprising an electromagnet assembly and an electrical assembly electrically connected with the electromagnet assembly, the electromagnet assembly comprising:

an iron core (1) for connection to a bogie end of a railway transport vehicle,

the excitation coil (2) is wound on the iron core (1),

the armature (3) is used for being connected with the body end of the railway transport vehicle.

2. The active electromagnetic actuator of a railway transportation vehicle as claimed in claim 1, wherein the secondary suspension comprises an air spring, the air spring comprises an upper cover plate (6) of the air spring, a lower cover plate (5) of the air spring and an air spring air bag (7) arranged between the upper cover plate (6) of the air spring and the lower cover plate (5) of the air spring, and the electromagnet assembly is arranged in the air spring and connected with the air spring in parallel.

3. The active electromagnetic actuator of a railway vehicle according to claim 2, characterized in that the secondary suspension further comprises an emergency rubber pile (4) connected in series with the air spring, the electromagnet assembly being connected in parallel with the emergency rubber pile (4).

4. Active electromagnetic actuator for a railway vehicle according to claim 3, characterized in that the armature (3) of the electromagnet assembly is connected to the upper cover plate (6) of the air spring, and the iron core (1) of the electromagnet assembly acts directly on the bogie end of the railway vehicle.

5. Active electromagnetic actuator for a railway vehicle according to claim 3, characterized in that the travel of the electromagnet assembly is greater than the minimum travel for the emergency rubber pile (4) to function.

6. The active electromagnetic actuator of a railway vehicle as claimed in claim 2 or 3, wherein the electromagnet assembly is disposed at the central axis of the secondary suspension.

7. The active electromagnetic actuator of a railway vehicle as claimed in claim 2, wherein the electrical equipment comprises a sensor, a controller and a power amplifier;

the sensors comprise vertical acceleration sensors and fault diagnosis sensors, wherein the vertical acceleration sensors are respectively arranged on an air spring upper cover plate (6) and an air spring lower cover plate (5), the fault diagnosis sensors are used for passive secondary suspension fault diagnosis, the vertical acceleration sensors are used for returning real-time acceleration parameters to the controller, the fault diagnosis sensors are used for returning fault parameters to the controller when the air spring has a fault,

the controller is used for sending an instruction to the power amplifier according to an optimal control strategy after receiving the real-time acceleration parameters sent by the sensor, sending a cutting instruction to the power amplifier when receiving the fault parameters,

the power amplifier is used for changing the terminal voltage of the exciting coil after receiving an instruction of the controller.

8. The active electromagnetic actuator of a railway transport vehicle of claim 7,

the electric equipment is suspended below the vehicle body and uses the electric energy of the railway transport vehicle;

the controller adopts an industrial control computer;

the power amplifier adopts a direct current chopper.

Technical Field

The invention relates to the field of railway transport vehicle dynamics and active control, in particular to an active electromagnetic actuator of a railway transport vehicle.

Background

The existing secondary suspension system of the railway transport vehicle is usually an air spring, and an emergency rubber pile is usually arranged in the secondary suspension system, so that the driving safety of the air spring when the air spring is damaged and air-free under the condition of external force damage is ensured. However, the existing suspension system of the railway transport vehicle has a plurality of defects, which is mainly because the suspension system is a passive system, and the requirement of the train on the running stability when the train is disturbed by tracks with different frequencies is difficult to meet only by optimizing the parameters of the suspension system; secondly, the passive suspension system generally depends on an oil damper to convert vibration energy into heat energy for dissipation, so that energy is wasted. In the field of magnetic levitation vehicles, the vehicle is usually levitated stably by adjusting the currents of a levitation electromagnet and a guiding electromagnet. However, the direct application of the solution to rail vehicles still has some problems, the most important of which is the power problem, the suspension electromagnet of the magnetic suspension vehicle needs to bear the entire weight of the vehicle and passengers, so that the coil of the suspension vehicle usually needs to pass a large current, a large-section wire needs to be used or a superconducting technology is applied, and the rail vehicle has a larger weight and is difficult to be suspended only by electromagnetic force; secondly, the efficiency problem is that the medium between the electromagnet and the armature of the magnetic suspension vehicle is air, and the magnetic resistance is large, so that large exciting current is needed to establish the required magnetic induction intensity.

Disclosure of Invention

The object of the present invention is to overcome the above-mentioned drawbacks of the prior art and to provide an active electromagnetic actuator for a railway vehicle.

The purpose of the invention can be realized by the following technical scheme:

an active electromagnetic actuator for a railway vehicle connected in parallel with a passive secondary suspension of the railway vehicle and mounted between a bogie and a body of the railway vehicle, comprising an electromagnet assembly and an electrical assembly electrically connected to the electromagnet assembly, the electromagnet assembly comprising:

an iron core for connection with a bogie end of a railway transportation vehicle,

the excitation coil is wound on the iron core,

the armature is used for being connected with the body end of the railway transport vehicle.

Preferably, the electromagnet assembly in the present invention is a control electromagnet based on the dc electromagnet principle.

Preferably, the secondary suspension comprises an air spring, the air spring comprises an upper cover plate of the air spring, a lower cover plate of the air spring and an air spring air bag arranged between the upper cover plate of the air spring and the lower cover plate of the air spring, and the electromagnet assembly is arranged in the air spring and connected with the air spring in parallel.

Preferably, the secondary suspension further comprises an emergency rubber pile connected with the air spring in series, and the electromagnet assembly is connected with the emergency rubber pile in parallel.

The emergency rubber pile has high rigidity, and can work only when the air spring is damaged by external force and is air-free. When the air spring fails, the electromagnetic main actuator is cut off, and the load is directly pressed on the emergency rubber pile of the air spring.

Preferably, the armature of the electromagnet assembly is connected with the upper cover plate of the air spring, and the iron core of the electromagnet assembly directly acts on the bogie end of the railway transport vehicle.

Further preferably, the emergency rubber pile is of a hollow structure, and the iron core is arranged in the hollow structure of the emergency rubber pile.

According to the principle of fault-oriented safety, when the air spring loses air due to accident, the elastic connection between the vehicle body moving at high speed and the bogie is ensured (namely, the emergency rubber pile plays a role), and if the iron core contacts the armature first, the rigid connection between the vehicle body and the bogie is generated. Therefore, preferably, the stroke of the electromagnet assembly is greater than the minimum stroke in which the emergency rubber pile functions.

Preferably, the electromagnet assembly is arranged at the central shaft of the secondary suspension.

Preferably, the iron core and the armature are bonded by thin silicon steel sheets to reduce iron loss.

Preferably, the electrical device comprises a sensor, a controller and a power amplifier;

the sensors comprise vertical acceleration sensors respectively arranged on an air spring upper cover plate and an air spring lower cover plate and a fault diagnosis sensor for diagnosing the passive secondary suspension fault, the vertical acceleration sensors are used for returning real-time acceleration parameters to the controller, the fault diagnosis sensor is used for returning fault parameters to the controller when the air spring has a fault,

the controller is used for sending an instruction to the power amplifier according to an optimal control strategy after receiving the real-time acceleration parameters sent by the sensor, sending a cutting instruction to the power amplifier when receiving the fault parameters,

the power amplifier is used for changing the terminal voltage of the exciting coil after receiving an instruction of the controller.

Preferably, the first and second electrodes are formed of a metal,

the electric equipment is suspended below the vehicle body and uses the electric energy of the railway transport vehicle;

the controller adopts an industrial control computer;

the power amplifier adopts a direct current chopper.

Compared with the prior art, the invention has the following beneficial effects:

the invention fully utilizes the space in the air spring, improves the stability index of the vehicle and improves the safety of the vehicle.

Drawings

FIG. 1 is a schematic diagram of the present invention;

FIG. 2 is a front view block diagram of the electromagnet assembly and air spring of the present invention;

FIG. 3 is a schematic view, partially in section, of the electromagnet assembly and air spring;

FIG. 4 is a diagram showing the results of the analysis of the linear frequency response of the vertical acceleration of the vehicle body of a typical parametric model;

fig. 5 is a time domain simulation result of vertical nonlinearity of a vehicle body of an exemplary parametric model, wherein fig. 5(a) shows an acceleration average power spectral density map of an original mechanical system, and fig. 5(b) shows an acceleration average power spectral density map of an active control system.

In the figure, 1 is an iron core, 2 is an excitation coil, 3 is an armature, 4 is an emergency rubber pile, 5 is an air spring lower cover plate, 6 is an air spring upper cover plate, and 7 is an air spring air bag.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.