Active vibration control experiment platform

Abstract

A vibration active control experiment platform comprises a platform body, a vibration exciter and a sample piece are fixedly arranged on the platform body, the output end of the vibration exciter abuts against one end of the sample piece, the vibration active control experiment platform further comprises an upper computer, an RCP prototype model machine and an actuator, the actuator abuts against the other end of the sample piece, and the upper computer is connected with the RCP prototype model machine. The actuator is electrically connected with the RCP prototype model machine, and the RCP prototype model machine and the vibration exciter are electrically connected with the upper computer; the RCP prototype is electrically connected with the vibration exciter, so that a vibration signal sent by the upper computer can be verified, whether an algorithm built in the upper computer is correct or not is judged, corresponding optimization verification is carried out on the algorithm, the technical effect of carrying out experiment, verification and optimization at the same time is achieved, the development speed of a vibration active control system is greatly shortened, and the development efficiency is improved. And the device is almost suitable for experimental verification of all kinds of workpieces, and is extremely high in universality.

Description

Technical Field

[0001] The present application relates to the technical field of equipment vibration reduction, and in particular to an active vibration control experimental platform. Background Art

[0002] When equipment is working, it will generate vibration. There are two main ways to control this vibration: active control and passive control. Passive control is to absorb vibration through shock absorbers or other buffers, while active control is to actively offset the vibration of the equipment by using vibrations with the same frequency but opposite phase and amplitude. In comparison, active control brings better vibration effects.

[0003] In the existing technology, the research and development process of active vibration control systems has a certain degree of discreteness, and different algorithm models must be built for different vibration forces. There is currently no testing method to match the design and development. The research and development cycle is long, and it consumes a lot of manpower and cost resources. Usually, a separate experimental platform must be designed for specific equipment or workpieces, and the experimental platform must be redesigned for new equipment or workpieces. The versatility is poor, and there is no systematic experimental platform and operating process.

[0004] Therefore, it is necessary for the inventor to design a new vibration active control experimental platform to overcome the above problems. Summary of the Invention

[0005] The main purpose of this application is to provide a vibration active control experimental platform to solve the problems of poor versatility and long R&D cycle of vibration active control system experimental platforms in related technologies.

[0006] In order to achieve the above-mentioned objectives, the present application provides a vibration active control experimental platform, including a platform body, on which an exciter and a sample are fixedly arranged, the output end of the exciter abuts against one end of the sample, and also includes a host computer, an RCP prototype and an actuator, the actuator abuts against the other end of the sample, the actuator is electrically connected to the RCP prototype, and the RCP prototype and the exciter are both electrically connected to the host computer.

[0007] Preferably, an acceleration sensor is fixedly provided on the output end of the exciter, and the acceleration sensor is electrically connected to the host computer.

[0008] Preferably, a power amplifier is further included, and the power amplifier is electrically connected between the exciter and the host computer.

[0009] Preferably, a plurality of threaded holes are opened on the surface of the platform body, and the vibrator is fixedly connected to the platform body by bolts.

[0010] Preferably, the sample is fixedly installed by a clamping mechanism fixedly arranged on the platform body.

[0011] Preferably, the sample is fixedly connected to the platform body by bolts.

[0012] Preferably, the actuator is slidably arranged on the platform body, and a positioning structure is fixedly arranged between the actuator and the platform body.

[0013] Preferably, the exciter includes an exciter body and a push rod adapted to the exciter body, the push rod abuts against the sample, and the acceleration sensor is fixedly mounted on the push rod.

[0014] The present invention provides an active vibration control experimental platform, which has the following beneficial effects compared with the prior art:

[0015] The RCP prototype is electrically connected to the vibrator, enabling verification of the vibration signal emitted by the host computer. This allows for the determination of the correctness of the host computer's built-in algorithm and corresponding optimization and verification of the algorithm. This achieves the technical benefits of simultaneous experimentation, verification, and optimization, significantly shortening the development speed of the active vibration control system. Furthermore, in this application, the vibrator and sample are both fixedly mounted on the platform body. In actual use, the sample can be replaced and installed on the platform body for experimental verification. This makes it applicable to experimental verification of almost all types of workpieces, demonstrating its high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings that constitute part of this application are used to provide a further understanding of this application and make other features, objects and advantages of this application more apparent. The illustrative embodiment drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0017] Figure 1 It is the overall structural diagram of the utility model;

[0018] Figure 2 It is a control structure diagram of the present utility model.

[0019] Among them: 1. Platform body; 2. Vibrator; 201. Vibrator body; 202. Push rod; 3. Sample; 4. Host computer; 5. RCP prototype; 6. Actuator; 7. Acceleration sensor; 8. Power amplifier. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0021] It should be noted that the terms "first", "second", etc. in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0023] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0024] Additionally, the term "plurality" shall mean two or more.

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] like Figures 1 to 2As shown, a vibration active control experimental platform includes a platform body 1, on which an exciter 2 and a sample 3 are fixedly arranged, and the output end of the exciter 2 is abutted against one end of the sample 3. The platform body 1 also includes a host computer 4, an RCP prototype 5 and an actuator 6, and the actuator 6 is abutted against the other end of the sample 3. The actuator 6 is electrically connected to the RCP prototype 5, and the RCP prototype 5 and the exciter 2 are both electrically connected to the host computer 4.

[0027] Specifically, the vibrator 2 is used to excite the sample 3, causing it to vibrate. The host computer 4 collects the vibration signal generated by the sample 3. Based on the vibration signal, the host computer 4 generates a corresponding vibration signal with the same frequency but opposite phase and amplitude using a built-in algorithm. The signal is then transmitted to the actuator 6 via the RCP prototype 5, causing the actuator 6 to generate an opposite vibration to offset the vibration generated by the sample 3. The RCP prototype 5 is electrically connected to the vibrator 2, and can verify the vibration signal emitted by the host computer 4, thereby determining whether the algorithm built into the host computer 4 is correct and optimizing the algorithm accordingly. This achieves the technical effect of simultaneous experimentation, verification, and optimization, significantly shortening the development speed of the active vibration control system. In this embodiment, the vibrator 2 and the sample 3 are both fixedly mounted on the platform body 1. In actual use, the sample 3 can be replaced and installed on the platform body 1 for experimental verification. This is applicable to experimental verification of almost all types of workpieces and has extremely high versatility.

[0028] An acceleration sensor 7 is fixedly provided on the output end of the exciter 2, and the acceleration sensor 7 is electrically connected to the host computer 4; the exciter 2 includes an exciter body 201 and a top rod 202 adapted to the exciter body 201, the top rod 202 abuts against the sample 3, and the acceleration sensor 7 is fixedly mounted on the top rod 202; when working, the acceleration sensor 7 is used to sense the vibration frequency and vibration amplitude of the top rod 202 and the sample 3.

[0029] The apparatus further includes a power amplifier 8, which is electrically connected between the exciter 2 and the host computer 4. When the vibration generated by the exciter 2 is extremely small, making it difficult for the acceleration sensor 7 to sense the vibration of the sample 3 or having a large error, the power amplifier 8 can amplify the vibration signal of the top rod 202 of the exciter 2 or the sample 3, so that the vibration condition can be sensed and corresponding active vibration is generated, so that the excitation force covering the active vibration control can be wider.

[0030] The surface of the platform body 1 is provided with a plurality of threaded holes, and the vibrator is fixedly connected to the platform body 1 by bolts; when working, the vibrator can be fixedly mounted on the platform body 1 by bolts to ensure the stable installation of the exciter 2. When a vibrator 2 with higher power is needed, it can also be replaced by disassembling and assembling the bolts.

[0031] The sample 3 is fixedly installed by a clamping mechanism fixedly set on the platform body 1, or is fixedly connected to the platform body 1 by bolts; when working, when the clamping mechanism is used to install the sample 3, it is more convenient to replace and fix the sample 3, but in this case it is possible to cause the resonance of the clamping mechanism itself to be transmitted to the sample 3, interfering with the vibration signal and vibration law of the sample 3 itself, while when bolts are used for fixing, it is not easy to generate resonance to affect the vibration of the sample 3, but correspondingly, the installation and fixation are slightly more troublesome.

[0032] The actuator 6 is slidably arranged on the platform body 1, and a positioning structure is fixedly arranged between the actuator 6 and the platform body 1; during operation, because different samples 3 may have different sizes, while ensuring that one end of the sample 3 is in contact with the output end of the exciter 2, if the position of the other end changes, it is necessary to adjust the fixed position of the actuator 6 so that the actuator 6 is in contact with it.

[0033] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A vibration active control experimental platform, characterized by: The invention comprises a platform body (1), on which an exciter (2) and a sample (3) are fixedly arranged, wherein the output end of the exciter (2) is in contact with one end of the sample (3), and further comprises a host computer (4), an RCP prototype (5) and an actuator (6), wherein the actuator (6) is in contact with the other end of the sample (3), the actuator (6) is electrically connected to the RCP prototype (5), and the RCP prototype (5) and the exciter (2) are both electrically connected to the host computer (4).

2. The active vibration control experimental platform according to claim 1, characterized in that: An acceleration sensor (7) is fixedly provided on the output end of the exciter (2), and the acceleration sensor (7) is electrically connected to the host computer (4).

3. The active vibration control experimental platform according to claim 1, characterized in that: It also includes a power amplifier (8), which is electrically connected between the exciter (2) and the host computer (4).

4. The active vibration control experimental platform according to claim 1, characterized in that: A plurality of threaded holes are provided on the surface of the platform body (1), and the vibrator (2) is fixedly connected to the platform body (1) by means of bolts.

5. The active vibration control experimental platform according to claim 1, characterized in that: The sample (3) is fixedly mounted via a clamping mechanism fixedly arranged on the platform body (1).

6. The active vibration control experimental platform according to claim 1, characterized in that: The sample (3) is fixedly connected to the platform body (1) by means of bolts.

7. The active vibration control experimental platform according to claim 1, characterized in that: The actuator (6) is slidably arranged on the platform body (1), and a positioning structure is fixedly arranged between the actuator (6) and the platform body (1).

8. The active vibration control experimental platform according to claim 2, characterized in that: The exciter (2) comprises an exciter body (201) and a push rod (202) adapted to the exciter body (201); the push rod (202) abuts against the sample (3); and the acceleration sensor (7) is fixedly mounted on the push rod (202).

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