Precision laser tracking servo control system for moving target position measurement

Jiang, Yang; Wang, Dayong; Zhou, Weihu

doi:10.1016/j.ijleo.2016.11.214

Cited by 29 publications

(7 citation statements)

References 16 publications

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“…where the quantity  determined by the condition si << s2 can be chosen arbitrarily small. The tendency of inequality (15) to equality will mean the approach to the fulfillment of the compensation condition s2 = (-а0,M/а1,M).…”

Section: Synthesis Methodsmentioning

confidence: 99%

“…The problem of forming the spectrum of eigenvalues of the characteristic matrix arising during the synthesis of such systems is traditionally solved without taking into account the requirements for the accuracy indicators of the response to the reference input signals. These indicators are ensured at the subsequent stages of system design by introducing an external signal model and additional correcting filters into its structure [11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Modal synthesis of precision control systems

2020

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The problem of synthesis of precision modal control systems is considered. It is noted that a common approach to solving this problem is to consistently meet the requirements for the nature of the transient process and for the indicators of its accuracy. This approach to synthesis is faced with the need to make design decisions under incomplete conditions. In practice, this circumstance leads to obtaining synthesis results with undesirable deviations from technical requirements. When designing precision control systems, such deviations are unacceptable. To eliminate the difficulties that arise, a transition to interval methods for formulating and solving modal synthesis problems is proposed. The theoretical possibility of the interval approach is based on the excessive variety of possible placement of eigenvalues in the spectrum of the characteristic matrix of the system. An example of an interval synthesis of a system with a modal controller and additional output feedback is considered. The restrictions on the spectrum of the specified matrix are formed, which determine the fulfillment of the requirements for the monotonicity of the transient process, the regulation time and the accuracy of the response to harmonic influences. It is noted that the variety of solutions obtained creates the preconditions for a multi-alternative approach to modal synthesis of systems.

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Section: Synthesis Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modal synthesis of precision control systems

2020

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“…Selanjutnya terjadi pencarian di antara template-template yang ada, jika template telah ditemukan maka camera dapat mengenal bentuk tersebut. Setelah kecocokan objek dan template telah terjadi, maka proses pan-tilt servo dapat tracking [15].…”

Section: Template Matchingunclassified

Implementasi Object Tracking untuk Deteksi Titik Laser Menggunakan Raspberry Pi 4

Ramadhan¹,

Setiawan

Riyadi

et al. 2021

SISTEMASI

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Penelitian ini menyajikan sistem pan-tilt servo yang dapat mengikuti objek yang telah ditentukan. Perlu tercapainya pelacakan yang otomatis dan dapat terpantau melalui monitor. Sistem pada alat ini menggunakan raspberry pi atau komputer kecil, pi camera, pan-tilt servo, laser dan metode template matching. Template matching adalah metode pada pengolahan citra digital untuk menemukan bagianbagian kecil dari gambar yang cocok dengan gambar template. Raspberry pi terhubung pi camera, kamera berfungsi menangkap gambar pada objek setelah disinari titik laser yang digerakkan oleh pan-tilt servo. Menggunakan motor servo yang rasio torsi terhadap beban dan keakuratan. Pengenalan warna atau color recognition dilakukan menggunakan openCV yang terinstall pada raspberry pi. Hasil pada alat ini berupa software yang dapat melakukan object tracking dari penangkapan pi camera dengan jarak objek 2 meter.

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“…The third part is the PSD sensor contains the current introduced by the laser light 1024 nm light source after adjusted the spotlight in the midpoint of four photodiodes, then adjust vertical and horizontal axis to ensure the mirror tracks the reference signal. The best candidates for long-range displacement sensing applications are digital PSD, phototransistor PSD and tracking [6]. Fig.…”

Section: Hardware and Software Of The Systemmentioning

confidence: 99%

Precision Laser Beam Path Tracking Control System for Position Measurement Using PSD Sensor

Abdalla¹,

Shi²,

Abdel-Rahim³

2020

dtetr

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Position sensitive detector (PSD) is an optical position sensor that can measure a position of the light spot in one or two-dimensions on sensor surface. The PSD is precision semiconductor optical sensor that produces output currents related to the "Centre of mass'' of light incident on the surface of the device used in the measurement there are many advantages including a good positioning accuracy for fast response time and very simple signal conditioning circuits. A precise control system has been designed in this paper using a new and modern algorithm with a closed-loop system to obtain accurate tracking of the position and speed of the radiation used in the measurement of the specific physical process. The proposed control model about laser beam path controlled using a new type of controller named PSD fuzzy controller with feedback through PSD sensor, also the FOC method was applied to the hybrid stepper motor to control the position and speed with four rings feedback. The algorithm will realize better rise time and less overshoot better and detailed analysis is carried out to confirm the viability of the proposed system.

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Precision laser tracking servo control system for moving target position measurement

Cited by 29 publications

References 16 publications

Modal synthesis of precision control systems

Modal synthesis of precision control systems

Implementasi Object Tracking untuk Deteksi Titik Laser Menggunakan Raspberry Pi 4

Precision Laser Beam Path Tracking Control System for Position Measurement Using PSD Sensor

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