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Rotating speed measurement and control method based on high-precision centrifugal acceleration system

A centrifugal acceleration and rotational speed measurement technology, applied in the inertial field, can solve problems such as failure to meet the control requirements of high-precision centrifuge systems, limitations of PID control effects, and inability to realize accurate estimation and compensation of system time-varying disturbances.

Active Publication Date: 2021-09-07
BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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Problems solved by technology

However, the above improved PID control method cannot realize the accurate estimation and compensation of the time-varying interference of the system, which leads to the limitation of the PID control effect and cannot meet the control requirements of the high-precision centrifuge system

Method used

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  • Rotating speed measurement and control method based on high-precision centrifugal acceleration system
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  • Rotating speed measurement and control method based on high-precision centrifugal acceleration system

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Embodiment Construction

[0073] The invention discloses a rotational speed measurement and control device based on a high-precision centrifugal acceleration system. The device is mainly composed of three parts: control cabinet, program-controlled voltage regulating cabinet and high-power rectifying and chopper cabinet. The three parts are connected by cables. The composition and connection relationship are as follows: figure 1 shown.

[0074] A rotational speed measurement and control device based on a high-precision centrifugal acceleration system, the specific design steps are:

[0075] Step 1. For a high-precision centrifugal acceleration system, a grating encoder sensor is used to measure the rotational speed.

[0076] The sensor for speed measurement uses RON886 grating encoder produced by German HEIDENHAIN company, and its technical indicators are as follows:

[0077] Output signal: AC 1Vpp;

[0078] Measurement error: 1″;

[0079] Number of lines: 36000;

[0080] Maximum speed: 300rpm;

...

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Abstract

The invention discloses a rotating speed measurement and control method based on a high-precision centrifugal acceleration system. A device for implementing the method is mainly composed of a control cabinet, a program control voltage regulation cabinet and a high-power rectification chopping cabinet which are connected through cables. The control system adopts a position, speed and current three-loop feedback control principle, wherein a current loop adopts a filter capacitor for regulation and control, so that current fluctuation and oscillation are prevented, and stable control of output voltage is ensured. In the design of a controller, a dynamic neural network controller based on performance optimization is provided, system energy consumption is considered in a conventional neural network control algorithm, an adjustment law of neural network weight is given based on a back propagation algorithm, and the designed controller ensures system tracking precision, reduces control energy consumption, and improves the overall control performance of the system.

Description

technical field [0001] The invention relates to a rotational speed measurement and control method based on a high-precision centrifugal acceleration system, which belongs to the technical field of inertia. Background technique [0002] In the process of modern weaponry, various strategic and tactical missiles, large launch vehicles, military aircraft, ships, etc. are equipped or are being equipped with inertial devices. Due to the late start of inertial technology in our country, there is still a big gap compared with foreign advanced weapons and equipment. It is necessary, but not sufficient, for these inertial devices to carry out tests less than or equal to lg (gravitational acceleration) in the gravitational field. It is necessary to test and calibrate in the acceleration field greater than 1g. The precision centrifuge is the main equipment for calibrating the performance test of the large-range accelerometer above 1g. Its performance directly affects the navigation, gui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D13/62G01P3/44
CPCG05D13/62G01P3/44
Inventor 董雪明王敏林代洁杜美林
Owner BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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