A hydraulic stroke accurate control system and method based on dynamic measurement technology

Abstract

The present application relates to a kind of hydraulic stroke accurate control system and method based on dynamic measurement technology, system includes the motion displacement measurement module connected in turn, signal sampling and conditioning unit, data processing and operation unit, motion parameter synthesis unit, hydraulic actuator and hydraulic movement mechanism, hydraulic movement mechanism is connected with motion displacement measurement module;Motion displacement measurement module is used to be responsible for the stroke of the feedback of hydraulic movement mechanism to signal sampling and conditioning unit;Signal sampling and conditioning unit are used to send to data processing and operation unit after displacement signal is processed by shaping, amplification, conditioning, normalization;Data processing and operation unit are transmitted to motion parameter synthesis unit after displacement signal processing, again after output to the hydraulic actuator of variable parameter control by motion parameter synthesis unit, hydraulic actuator dynamically adjusts the stroke of hydraulic movement mechanism.It can accurately feedback real-time position information of stroke, also can control the accurate stroke of hydraulic actuator.

Description

Technical Field

[0001] This invention relates to the field of hydraulic stroke control system technology, and in particular to a hydraulic stroke precision control system and method based on dynamic measurement technology. Background Technology

[0002] A hydraulic control system uses an electric motor as its power source and a hydraulic pump to convert mechanical energy into pressure, which then drives hydraulic oil. By controlling various valves to change the flow direction of the hydraulic oil, the system drives hydraulic cylinders to perform movements of different strokes and directions, fulfilling the different operational needs of various equipment.

[0003] In existing technologies, traditional hydraulic stroke control typically uses proximity switches as sensors to adjust the motion stroke. Since proximity switches can only provide feedback signals of switching quantities, even with multiple sensors installed along the entire stroke, it is impossible to accurately provide real-time position information, let alone control the precise stroke of the hydraulic actuator. This limits the application of hydraulic control systems in many fields. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a hydraulic stroke precision control system and method based on dynamic measurement technology. It employs dynamic measurement technology and variable parameter feedback control technology, which can not only accurately feedback the real-time position information of the stroke, but also control the precise stroke of the hydraulic actuator, thus expanding the application of hydraulic control systems in many fields.

[0005] The above-mentioned objective of this invention is achieved through the following technical solutions:

[0006] A hydraulic stroke precision control system based on dynamic measurement technology includes a motion displacement measurement module, a signal sampling and conditioning unit, a data processing and calculation unit, a motion parameter synthesis unit, a hydraulic actuator, and a hydraulic motion mechanism connected in sequence, wherein the hydraulic motion mechanism is connected to the motion displacement measurement module.

[0007] The motion displacement measurement module is responsible for feeding back the stroke of the hydraulic motion mechanism to the signal sampling and conditioning unit;

[0008] The signal sampling and conditioning unit is used to send the displacement signal to the data processing and calculation unit after shaping, amplification, conditioning and normalization.

[0009] The data processing and calculation unit processes the displacement signal and transmits it to the motion parameter synthesis unit. The motion parameter synthesis unit then outputs the signal to the hydraulic actuator controlled by variable parameters. The hydraulic actuator dynamically adjusts the stroke of the hydraulic motion mechanism to achieve precise control of the displacement of the hydraulic motion mechanism.

[0010] In a preferred embodiment, the present invention may be further configured such that the signal sampling and conditioning unit includes a signal sampling and holding module, a signal amplification module, a signal normalization module, and an A / D conversion module connected in sequence.

[0011] In a preferred embodiment, the present invention may be further configured as follows: it also includes a voltage reference module, which provides a voltage reference to the motion displacement measurement module. The motion displacement measurement module converts real-time displacement information into a voltage signal. The voltage signal is transmitted to the signal amplification module through the signal sampling and holding module. After amplification and conditioning, the analog voltage signal processed by the signal normalization module is sent to the A / D module. The digital signal generated after conversion by the A / D module is processed by the data processing and calculation unit, and then output to the variable parameter controlled hydraulic actuator through the motion parameter synthesis unit. The stroke of the hydraulic motion mechanism is dynamically adjusted in real time to achieve precise control of the motion mechanism displacement.

[0012] In a preferred embodiment, the present invention can be further configured such that: the hydraulic motion mechanism includes a fixed end and a moving end of the hydraulic motion mechanism connected to each other, the moving end of the hydraulic motion mechanism is linked to the motion displacement detection module, and the hydraulic actuator is controlled to be connected to the moving end of the hydraulic motion mechanism.

[0013] In a preferred embodiment, the present invention may be further configured such that the motion displacement measurement module consists of resistive elements.

[0014] A method for precise control of hydraulic stroke based on dynamic measurement technology includes the following steps: the motion displacement measurement module feeds back the stroke of the hydraulic motion mechanism to the signal sampling and conditioning unit, and the signal sampling and conditioning unit sends the displacement signal to the data processing and calculation unit after shaping, amplification, conditioning and normalization.

[0015] The data processing and calculation unit processes the displacement signal and transmits it to the motion parameter synthesis unit. The motion parameter synthesis unit then outputs the signal to the hydraulic actuator controlled by variable parameters. The hydraulic actuator dynamically adjusts the stroke of the hydraulic motion mechanism to achieve precise control of the displacement of the hydraulic motion mechanism.

[0016] In summary, the present invention has at least one of the following beneficial technical effects:

[0017] This invention discloses a hydraulic stroke precision control system and method based on dynamic measurement technology. The entire system includes a motion displacement measurement module, a signal sampling and conditioning unit, a data processing and calculation unit, a motion parameter synthesis unit, a hydraulic actuator, and a hydraulic motion mechanism. It adopts dynamic measurement technology and variable parameter feedback control technology, and is suitable for applications requiring precise control of hydraulic stroke, such as tooling fixtures, mold manufacturing, etc. It is applicable to applications of precise hydraulic stroke control, and can not only accurately feedback the real-time position information of the stroke, but also control the precise stroke of the hydraulic actuator, thus expanding the application of hydraulic control systems in many fields. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention.

[0019] Figure 2 The present invention is illustrated by a structural block diagram of the signal sampling and conditioning unit. Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a communication connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example

[0023] Reference Figure 1The present invention discloses a hydraulic stroke precision control system based on dynamic measurement technology, comprising a motion displacement measurement module, a signal sampling and conditioning unit, a data processing and calculation unit, a motion parameter synthesis unit, a hydraulic actuator, and a hydraulic motion mechanism connected in sequence, wherein the hydraulic motion mechanism is connected to the motion displacement measurement module.

[0024] Reference Figure 1 The motion displacement measurement module is responsible for feeding back the stroke of the hydraulic motion mechanism to the signal sampling and conditioning unit. The signal sampling and conditioning unit is responsible for shaping, amplifying, conditioning, and normalizing the displacement signal before sending it to the data processing and calculation unit. The data processing and calculation unit processes the displacement signal and transmits it to the motion parameter synthesis unit, which then outputs it to the variable parameter controlled hydraulic actuator. The hydraulic actuator dynamically adjusts the stroke of the hydraulic motion mechanism to achieve precise control of the displacement of the hydraulic motion mechanism.

[0025] Among them, reference Figure 2 The signal sampling and conditioning unit includes a signal sampling and holding module, a signal amplification module, a signal normalization module, and an A / D conversion module connected in sequence.

[0026] This invention also includes a voltage reference module, which provides a voltage reference to the motion displacement measurement module. The motion displacement measurement module converts real-time displacement information into a voltage signal. The voltage signal is transmitted to the signal amplification module through the signal sampling and holding module. After amplification and conditioning, the analog voltage signal processed by the signal normalization module is sent to the A / D module. The digital signal generated after conversion by the A / D module is processed by the data processing and calculation unit, and then output to the variable parameter control hydraulic actuator through the motion parameter synthesis unit. The stroke of the hydraulic motion mechanism is dynamically adjusted in real time to achieve precise control of the motion mechanism displacement.

[0027] The hydraulic motion mechanism includes a fixed end and a moving end of the hydraulic motion mechanism connected to each other. The moving end of the hydraulic motion mechanism is linked to the motion displacement detection module, and the hydraulic actuator is controlled to the moving end of the hydraulic motion mechanism. In this embodiment, the motion displacement measurement module consists of resistive elements. Example

[0028] A method for precise control of hydraulic stroke based on dynamic measurement technology includes the following steps: the motion displacement measurement module feeds back the stroke of the hydraulic motion mechanism to the signal sampling and conditioning unit, and the signal sampling and conditioning unit sends the displacement signal to the data processing and calculation unit after shaping, amplification, conditioning and normalization.

[0029] The data processing and calculation unit processes the displacement signal and transmits it to the motion parameter synthesis unit. The motion parameter synthesis unit then outputs the signal to the variable parameter controlled hydraulic actuator. The hydraulic actuator dynamically adjusts the stroke of the hydraulic motion mechanism to achieve precise control of the displacement of the hydraulic motion mechanism.

[0030] The implementation principle of this invention is as follows: This invention discloses a hydraulic stroke precision control system and method based on dynamic measurement technology. The entire system includes a motion displacement measurement module, a signal sampling and conditioning unit, a data processing and calculation unit, a motion parameter synthesis unit, a hydraulic actuator, and a hydraulic motion mechanism. It adopts dynamic measurement technology and variable parameter feedback control technology, which is suitable for applications requiring precise control of hydraulic stroke, such as tooling fixtures, mold manufacturing, etc. It is applicable to applications of precise hydraulic stroke control, and can not only accurately feedback the real-time position information of the stroke, but also control the precise stroke of the hydraulic actuator, thus expanding the application of hydraulic control systems in many fields.

[0031] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A hydraulic stroke precision control system based on dynamic measurement technology, characterized in that, The system includes a motion displacement measurement module, a signal sampling and conditioning unit, a data processing and calculation unit, a motion parameter synthesis unit, a hydraulic actuator, and a hydraulic motion mechanism connected in sequence, wherein the hydraulic motion mechanism is connected to the motion displacement measurement module. The motion displacement measurement module is responsible for feeding back the stroke of the hydraulic motion mechanism to the signal sampling and conditioning unit; The signal sampling and conditioning unit is used to send the displacement signal to the data processing and calculation unit after shaping, amplification, conditioning and normalization. The data processing and calculation unit processes the displacement signal and transmits it to the motion parameter synthesis unit. The motion parameter synthesis unit then outputs the signal to the hydraulic actuator controlled by variable parameters. The hydraulic actuator dynamically adjusts the stroke of the hydraulic motion mechanism to achieve precise control of the displacement of the hydraulic motion mechanism. The signal sampling and conditioning unit includes a signal sampling and holding module, a signal amplification module, a signal normalization module, and an A / D conversion module connected in sequence. It also includes a voltage reference module, which provides a voltage reference to the motion displacement measurement module. The motion displacement measurement module converts real-time displacement information into a voltage signal. The voltage signal is transmitted to the signal amplification module through the signal sampling and holding module. After amplification and conditioning, the analog voltage signal processed by the signal normalization module is sent to the A / D conversion module. The digital signal generated after conversion by the A / D conversion module is processed by the data processing and calculation unit, and then output to the variable parameter control hydraulic actuator through the motion parameter synthesis unit. The stroke of the hydraulic motion mechanism is dynamically adjusted in real time to achieve precise control of the motion mechanism displacement.

2. The hydraulic stroke precision control system based on dynamic measurement technology according to claim 1, characterized in that, The hydraulic motion mechanism includes a fixed end and a moving end of the hydraulic motion mechanism connected to each other. The moving end of the hydraulic motion mechanism is linked to the motion displacement measurement module, and the hydraulic actuator is controlled to the moving end of the hydraulic motion mechanism.

3. The hydraulic stroke precision control system based on dynamic measurement technology according to claim 1, characterized in that, The motion displacement measurement module consists of resistive elements.

4. A method for precise control of hydraulic stroke based on dynamic measurement technology, wherein the method employs the precise control system for hydraulic stroke based on dynamic measurement technology as described in claim 1, characterized in that... Includes the following steps: The motion displacement measurement module feeds back the stroke of the hydraulic motion mechanism to the signal sampling and conditioning unit. The signal sampling and conditioning unit then sends the displacement signal to the data processing and calculation unit after shaping, amplifying, conditioning, and normalizing it. The data processing and calculation unit processes the displacement signal and transmits it to the motion parameter synthesis unit. The motion parameter synthesis unit then outputs the signal to the hydraulic actuator controlled by variable parameters. The hydraulic actuator dynamically adjusts the stroke of the hydraulic motion mechanism to achieve precise control of the displacement of the hydraulic motion mechanism.

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