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Laser device control system and design method of internal model controller with disturbance observer

An internal model controller and interference observer technology, applied in general control systems, control/regulation systems, lasers, etc., can solve the problems of magnetic detection accuracy decline and laser output instability, and achieve interference suppression and good robustness. and anti-interference ability, the effect of small output overshoot

Active Publication Date: 2019-11-08
苏州邈航科技有限公司
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Problems solved by technology

The core component of the magnetometer is a laser. Because the external environment temperature changes will cause the laser output to be unstable and the magnetic detection accuracy will decrease. Therefore, the temperature control of the laser is an important part of the laser control system design.

Method used

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  • Laser device control system and design method of internal model controller with disturbance observer
  • Laser device control system and design method of internal model controller with disturbance observer
  • Laser device control system and design method of internal model controller with disturbance observer

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Embodiment Construction

[0042] The present invention will be further described in detail below with reference to the drawings and embodiments, but the laser control system based on disturbance observation and internal model control proposed by the present invention is not limited to the embodiments.

[0043] The laser in this embodiment is a VCSEL laser. Compared with other lasers, the VCSEL laser has the advantages of small volume, circular output spot, single longitudinal mode output, small threshold current, low price, and easy integration into a large-area array. In recent years, It has aroused the great attention of domestic scholars.

[0044] Such as figure 1 As shown, the VCSEL laser control system based on disturbance observer and internal model control includes an information processing module, a laser current drive module, a heating current drive module and a temperature demodulation module; the information processing module includes a controller and a communication module; the controller i...

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Abstract

The invention provides a laser device control system and a design method of an internal model controller with a disturbance observer. The control system comprises an information processing module, a laser current driving module, a heating current driving module and a temperature demodulating module. The information processing module comprises a controller. The controller comprises the internal model controller with the disturbance observer. The internal model controller compensates for the model perturbation and disturbance during environmental changes on the basis of the estimation of external environment temperature disturbance, solves the problem that the laser device control temperature is not stable due to environment disturbance and has the advantages of being free of excessive modulation, rapid in response and high in robustness.

Description

technical field [0001] The invention relates to the technical field of laser temperature control, in particular to a laser control system and a design method of an internal model controller (IMC) with an interference observer. Background technique [0002] In recent years, magnetic field measurement technology has developed rapidly due to its wide range of applications. Magnetometers have become indispensable core equipment in the fields of magnetoencephalography, magnetocardiography, deep-sea diving, mineral exploration and orientation identification. The core component of the magnetometer is a laser. Because the external environment temperature changes will cause the laser output to be unstable and the magnetic detection accuracy will decrease. Therefore, the temperature control of the laser is an important part of the laser control system design. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a temperature c...

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Application Information

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IPC IPC(8): G05B13/04G05D23/19G05D23/24H01S5/042
CPCG05B13/045G05D23/1917G05D23/24H01S5/042
Inventor 缪存孝张雨霖杜玉虎楚焕鑫
Owner 苏州邈航科技有限公司
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