CN110778641A

CN110778641A - Active control system for dynamic behavior of high-speed train

Info

Publication number: CN110778641A
Application number: CN201911053160.1A
Authority: CN
Inventors: 张春巍; 王昊; 徐洋
Original assignee: Qingdao University of Technology
Current assignee: Qingdao University of Technology
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-02-11
Anticipated expiration: 2039-10-31
Also published as: CN110778641B; WO2021082774A1

Abstract

The invention relates to the field of vibration control, in particular to a dynamic behavior active control system of a high-speed train, which comprises a sensor, a controller and a control device, wherein the sensor is used for detecting the dynamic behavior of the high-speed train; the sensor is arranged on a controlled train, the control device comprises a base, a driving motor, an encoder, a speed changer and a quality disc, the base is fixed on the controlled train, the driving motor is fixed on the base, the encoder is coaxially fixed at the bottom of the driving motor, the speed changer is arranged at the top of the driving motor, and a rotating shaft of the driving motor is fixedly connected with the quality disc; the controller is electrically connected with the driving motor, the sensor and the encoder. The invention utilizes the active control technology, fully exerts the output torque effect of the system, enables the output torque to be directly acted on the train body, and can realize different control effects by adjusting the system control algorithm according to actual needs, thereby realizing the vibration control of the train carriage.

Description

Active control system for dynamic behavior of high-speed train

Technical Field

The invention relates to the field of vibration control, in particular to a dynamic behavior active control system of a high-speed train.

Background

With the wider and wider area covered by the high-speed railway, the running speed of the vehicle is faster and faster, the dynamic acting force between each part of the vehicle and the wheel rail is intensified, and the dynamics problem caused by the dynamic acting force is more obvious, so that the research on the vehicle dynamics is especially important.

Under the condition of high-speed operation of a train, the influence of cracks and sundries on an ① track and uneven settlement of a rail foundation, the influence of long-term abrasion of rollers at the bottom of ②, the influence of lateral wind pressure when a ③ train enters a tunnel, and the influence of uneven height distribution of rails at two ends of a ④ train at a turning corner are influenced.

In order to solve various problems caused by vibration of train cars and to eliminate or reduce random vibration caused by external excitation, structural vibration control technology has been rapidly developed in recent years.

However, the existing vibration control system has the disadvantages, which are mainly reflected in the following aspects:

first, the existing suspension system only considers the directions of the vertical and horizontal forces, and the acting force direction is limited to two linear directions. However, in real situations, the dynamic response of the train generates a rolling motion similar to a rolling motion, a shaking motion and a nodding motion, and the most effective control force action cannot be formed only by the linear force action provided by the suspension system, so that the control action of the conventional suspension system cannot be fully exerted, and the unfavorable dynamic response of the train cannot be fully inhibited.

Secondly, a large number of experiments and researches show that the control force characteristics of the suspension system under the action of two linear forces present stronger nonlinearity, the control effects on trains achieved by different excitation frequencies are different, even under a certain excitation frequency, the response of the suspension system can be amplified if the suspension system does not achieve the control effect, the expected control moment effect cannot be generated, and the direct and effective control effect cannot be exerted.

Above not enough leads to current train vibration control device can not solve carriage random vibration scheduling problem well, and current vibration control device can't satisfy the train and meet the vibration control demand that the complex environment produced at the high-speed in-process that traveles.

Disclosure of Invention

The present invention is directed to solve the above problems in the prior art, and a primary object of the present invention is to provide an active control system for dynamic behavior of a high-speed train.

In order to achieve the aim, the active control system for the dynamic behavior of the high-speed train comprises a sensor, a controller and a control device;

the sensor is arranged on a controlled train, the control device comprises a base, a driving motor, an encoder, a speed changer and a quality disc, the base is fixed on the controlled train, the driving motor is fixed on the base, the encoder is coaxially fixed at the bottom of the driving motor, the speed changer is arranged at the top of the driving motor, and a rotating shaft of the driving motor is fixedly connected with the quality disc; the controller is electrically connected with the driving motor, the sensor and the encoder.

Preferably, driving motor passes through the cardboard subassembly to be fixed on the base, and the cardboard subassembly includes left cardboard and right cardboard, and left cardboard and right cardboard are the U type, and on the right cardboard was fixed in the base, bolted connection was passed through with the both ends of right cardboard in the both ends of left cardboard, and the driving motor chucking is between the U type side of left cardboard and right cardboard.

Preferably, the two ends of the right clamping plate are respectively provided with a long hole.

Preferably, the middle of the right clamping plate is also provided with a fastening bolt.

Preferably, a shaft sleeve is arranged at the center of the mass disc, and a rotating shaft of the driving motor is connected with the shaft sleeve through a bolt.

Preferably, the drive motor is a stepper motor or a servo motor.

Preferably, the transmission is a retarder.

Preferably, the encoder is an opto-electronic encoder.

The invention has the following beneficial effects:

(1) the invention utilizes the active control technology, fully exerts the output torque effect of the system, ensures that the output torque can directly act on the train body, fully exerts the rotation control effect, furthest ensures the control effect, and can realize different control effects by adjusting the system control algorithm according to actual needs so as to further realize the vibration control of the train carriage;

(2) the invention adopts the driving motor to realize the control force output, does not need to carry out a complicated frequency modulation design process, avoids the problem that the control can not be realized due to the limitation of a frequency modulation technology, and has wider application range.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a card assembly;

FIG. 3 is a schematic view of a right card structure;

FIG. 4 is a schematic view of a mass disk configuration;

FIG. 5 is a schematic view of a drive motor configuration;

wherein the figures include the following reference numerals: 1. a base; 2. a drive motor; 3. a mass disc; 4. a left snap gauge; 5. a right snap-gauge; 6. a strip hole; 7. fastening a bolt; 8. a shaft sleeve; 9. a transmission; 10. an encoder; 11. the rotating shaft of the motor is driven.

Detailed Description

The invention will be further explained with reference to the drawings.

The active control system for the dynamic behavior of the high-speed train comprises a sensor, a controller and a control device, wherein the sensor, the controller and the control device are arranged on the controlled train;

as shown in fig. 1, the control device comprises a base 1, a driving motor 2 and a quality disc 3, wherein the base is fixed on a controlled train, and the driving motor is fixed on the base through a clamping plate assembly; as shown in FIG. 2, the clamping plate component comprises a left clamping plate 4 and a right clamping plate 5, the left clamping plate and the right clamping plate are both U-shaped, the right clamping plate is fixed on the base, the two ends of the left clamping plate and the two ends of the right clamping plate are connected through bolts, and the driving motor is clamped between the U-shaped side faces of the left clamping plate and the right clamping plate.

As shown in fig. 3, in order to adapt to motors with different sizes, the utilization rate of the control system is improved, the two ends of the right clamping plate are respectively provided with a strip hole 6, and the left clamping plate and the right clamping plate can clamp driving motors with different sizes by adjusting the relative positions between the bolt holes on the left clamping plate and the strip holes. In order to make the driving motor more firmly fixed, a fastening bolt 7 is further arranged in the middle of the right clamping plate, and the driving motor is further fixed through the fastening bolt, so that the risk of the motor falling off under the condition of high-speed rotation is avoided.

As shown in fig. 4, a shaft sleeve 8 is fixed at the center of the mass disk, as shown in fig. 5, a transmission 9 is arranged at the top of the driving motor, an encoder 10 coaxial with the driving motor is arranged at the bottom of the driving motor, and a rotating shaft 11 of the driving motor is connected with the shaft sleeve through a bolt.

The driving motor adopts a stepping motor or a servo motor, the speed changer is a speed reducer, and the encoder adopts a photoelectric encoder.

The controller is electrically connected with the driving motor, the sensor and the encoder, receives signals of the encoder arranged at the tail end of the driving motor and the sensor arranged on a controlled compartment, transmits control signals to the driving motor, and then controls the rotation state of the quality disc in real time.

The invention has the following action processes:

in the control process, the sensor collects the motion state of the controlled carriage and transmits data to the controller, the controller controls the driving motor to act, the driving motor controls the quality disc to rotate according to the real-time measured motion state of the carriage, and the acting force generated by the rotation of the quality disc further acts on the base so as to be transmitted to the controlled carriage and control the torsion of the controlled carriage; the encoder coaxially arranged at the tail end of the driving motor collects the running condition of the driving motor in real time and feeds the running condition back to the controller, so that the closed-loop control of the controller, the controlled carriage and the driving motor is realized.

The rotation of the quality disc controlled by the driving motor is changed in real time according to the torsion amplitude and the frequency of the controlled carriage acquired in real time, so that the control torque acting on the controlled carriage is adjusted, the vibration of the carriage is controlled by adjusting the output of the driving energy, and the aim of controlling the vibration of the train carriage is finally fulfilled.

The active control system of the invention can be applied to high-speed rail trains, and can also be applied to vehicles such as subways, light rails, trains, automobiles, ships and the like.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed train dynamic behavior active control system is characterized by comprising a sensor, a controller and a control device;

the sensor is arranged on a controlled train, the control device comprises a base (1), a driving motor (2), an encoder (10), a speed changer (9) and a quality disc (3), the base (1) is fixed on the controlled train, the driving motor (2) is fixed on the base (1), the encoder (10) is coaxially fixed at the bottom of the driving motor (2), the speed changer (9) is arranged at the top of the driving motor (2), and a rotating shaft (11) of the driving motor is fixedly connected with the quality disc (3); the controller is electrically connected with the driving motor (2), the sensor and the encoder (10).

2. The active control system for the dynamic behavior of the high-speed train according to claim 1, wherein the driving motor (2) is fixed on the base (1) through a clamping plate assembly, the clamping plate assembly comprises a left clamping plate (4) and a right clamping plate (5), the left clamping plate (4) and the right clamping plate (5) are both U-shaped, the right clamping plate (5) is fixed on the base (1), two ends of the left clamping plate (4) are connected with two ends of the right clamping plate (5) through bolts, and the driving motor (2) is clamped between the U-shaped side surfaces of the left clamping plate (4) and the right clamping plate (5).

3. The active control system for the dynamic behavior of the high-speed train according to claim 2, wherein the two ends of the right clamping plate (5) are respectively provided with a long hole (6).

4. The active control system for dynamic behavior of high-speed train according to claim 2, characterized in that the right clamping plate (5) is further provided with a fastening bolt (7) at the middle position.

5. The active control system for the dynamic behavior of the high-speed train according to claim 1, wherein a shaft sleeve (8) is arranged at the center of the mass disc (3), and a rotating shaft (11) of the driving motor is connected with the shaft sleeve (8) through a bolt.

6. The active control system for dynamic behavior of high-speed trains according to claim 1, characterized in that the driving motor (2) is a stepping motor or a servo motor.

7. Active control system for the dynamic behaviour of high speed trains according to claim 1, characterized in that the speed change (9) is a speed reducer.

8. The active control system for dynamic behavior of high-speed trains according to claim 1, characterized in that the encoder (10) is a photoelectric encoder (10).