A FPGA-Based Digital-Mirror Driving Control System for Compressive Imaging

2013 ◽  
Vol 760-762 ◽  
pp. 1259-1262
Author(s):  
Shi Bo Li ◽  
Jun Hua He ◽  
Pei Lv
Keyword(s):  
Control System ◽  
Digital Image ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Test Results ◽  
Compressive Imaging ◽  
Screen Image ◽  
Hardware System

With FPGA as the host controller, a set of hardware system based on digital micro-mirror device (DMD) for compressive imaging (CI) was developed. This paper studies the principle and characteristic of DMD control. First, the data of PC Screen image is transferred to DMD driver by software using binary pulse width modulation (BPWM) technology. The data is then rewritten into a control single which finally directs the DMD. The test results proved that the digital image received can be loaded onto the micro-mirrors excellently and with optics module installed, the system could successfully implement the CS measurement patterns which satisfy CI system.

Designing of Robot Gamelan Music using ATmega 16 Microcontroller

2017 ◽  
Vol 6 (2) ◽  
pp. 121
Author(s):  
Handri Jir Azhar ◽  
Ferry Hadary ◽  
Syaifurrahman Syaifurrahman
Keyword(s):  
Control System ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Pd Control ◽  
Rotary Encoder ◽  
Motor Velocity

This paper presents a robot concept which is the robot can play the instrumental Gamelan music. Gamelan is a percussive instrument. Instrumental Gamelan music keys are consist of 2 octaves in 15 tones. Robot Gamelan music is using proportional-derivative (PD) control system. PD control of the robot is by controlling DC gear motor position to desired Gamelan key position. Robot Gamelan music using ATmega 16 microcontroller as a controller. Feedback of PD control is using magnetic rotary encoder (MRE) sensor. PD control is using the constant. The constant functions of PD control are determining the pulse width modulation (PWM) toward DC gear motor velocity in order to reposition a gamelan key position and pushing down the errors.

scholarly journals Design of a Pulse-Width-Modulation Spacecraft Attitude Control System Via Digital Redesign

1999 ◽  
Vol 32 (2) ◽  
pp. 8033-8038 ◽  
Author(s):  
Tohru Ieko ◽  
Yoshimasa Ochi ◽  
Kimio Kanai ◽  
Noriyuki Hori ◽  
Peter N. Nikiforuk
Keyword(s):  
Control System ◽  
Attitude Control ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Spacecraft Attitude ◽  
Spacecraft Attitude Control ◽  
Attitude Control System ◽  
Digital Redesign

Analysis of Crankcase Flow of an Automobile ECV for Air Conditioning Control System

2013 ◽  
Vol 373-375 ◽  
pp. 421-426 ◽  
Author(s):  
Md. Iqbal Mahmud ◽  
Haeng Muk Cho
Keyword(s):  
Control System ◽  
Experimental Test ◽  
Input Signal ◽  
Pulse Width ◽  
Air Conditioning ◽  
Pulse Width Modulation ◽  
Control Valve ◽  
Electromagnetic Control ◽  
Pressure Controlled ◽  
Conditioning Control

Electromagnetic control valve (ECV) controls an automobile vehicle air conditioning compressor based on a pulse width modulation (PWM) input signal that supplied from an external controller. For maintaining a suitable range of temperatures inside the vehicle, suction and crankcase port pressure controls the swash (wobble) plate at certain angle. Suction and crankcase port pressure controlled in ECV can be analyzed by experimental test by considering different technical assumptions. This research paper highlights the flow of air from crankcase port with correspondence with amount of variable supply of current to obtain the experimental test data which is important to maintain the vehicle temperature inside the compartment for passengers comfort.

scholarly journals THE STABILIZATION ACCURACY OF THE PHASE POSITION OF THE WORKING BODY OF THE ROBOTICS COMPLEX

2020 ◽  
pp. 20-28
Author(s):  
А. Denisov ◽  
Y. Denisov ◽  
O. Bursala
Keyword(s):  
Control System ◽  
Electric Drive ◽  
Pid Controller ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Optimal Operation ◽  
Voltage Inverter ◽  
Operation Speed ◽  
The Moment ◽  
Autonomous Voltage Inverter

To stabilize the phase position of the working body of the robotics complex a single-circuit precision electric drive system was developed based on the principle of phase-locked loop. The direct-driven electric drive is made on the basis of brushless direct current motor, which is switched to synchronous mode with minimal discrepancy between the phases of the reference signals and the pulse speed sensor. The phase error signal is fed to the input of the PID controller, which controls the pulse width modulation of the impulses controlling the operation of the power transistors of the autonomous voltage inverter. In a static mode, the control system of the autonomous voltage inverter implements a sinusoidal law of the pulse width modulation of the output pulses. The PID controller and the control system of the autonomous voltage inverter are programmatically implemented on the basis of the controller. In the process of analysing of the stabilization accuracy, the synchronous motor is represented by a second-order linear link, which establishes a relation between the phase deviations of the motor rotor and the stator magnetic field. The autonomous voltage inverter is represented by a zero-order hold whose coefficient of amplification on amplitude is found by the results of the approximation of its output voltage using the Walsh-Fourier series. The analysis of the phase stabilization process is performed on the basis of the state variables method taking into account the perturbations at the moment of load using the program which implements the recurrent procedure. The settings of the PID controller are determined by the variation results when the moment of load changes. Their initial values ​​are determined as a result of optimizing the system in terms of operation speed considering the condition of finite duration processes. It is assumed that there is no moment of load perturbation. The procedure for setting the PID controller parameters to the optimal operation speed mode can also be performed on the basis of neural networks. As a result of the calculations, it was found that with an increase of the load moment by 5%, the maximum deviation of the rotor phase was 0.22 us and 0.03 us of minimum deviation respectively.

Research on Control System of Gearless Permanent Magnet Synchronous Traction Elevator

2011 ◽  
Vol 383-390 ◽  
pp. 5945-5950
Author(s):  
Yan Hu ◽  
Zhen Guang ◽  
Xiao Yu Wang
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Permanent Magnet ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Modulation Method ◽  
Driving System ◽  
Simulation Results ◽  
The Mathematical Model

A driving system for gearless traction machine plays an very important role in controlling elevator’s running. And its performances have a direct effect on the elevator’s performance. On the basic of the mathematical model of the gearless permanent magnetic synchronous machine (PMSM), id=0 vector control method and space vector pulse width modulation method are used in the control system. Then making a simulation on the system designed by MATLAB/SIMULINK. The simulation results show that the control method is feasible.

Study on a Pneumatic Artificial Muscle Actuator

2013 ◽  
Vol 860-863 ◽  
pp. 2738-2741
Author(s):  
Lian Zhi Yu
Keyword(s):  
Control System ◽  
Dynamic Characteristics ◽  
Mechanical Model ◽  
Pulse Width ◽  
High Speed ◽  
Pulse Width Modulation ◽  
Artificial Muscle ◽  
High Accuracy ◽  
Pneumatic Artificial Muscle ◽  
Micro Robot

Pneumatic artificial actuator had been designed and was used as power driven. A 3-DOF Pneumatic artificial actuator was described as a micro-robot flexible actuator, the mechanical model and dynamic characteristics were studied for high accurate control. The control system was designed and the actuator characteristics were tested in experiments. Results prove the pneumatic artificial actuator has good performances and can be controlled in high speed and high accuracy by computer system with PWM (Pulse Width Modulation: PWM).

scholarly journals Sistem Kontrol Troli Rotari sebagai Tempat Penitipan Barang Otomatis menggunakan Fuzzy Logic

2020 ◽  
Vol 8 (3) ◽  
pp. 575
Author(s):  
RISNANDA SATRIATAMA ◽  
DENNY DARLIS ◽  
PORMAN PANGARIBUAN
Keyword(s):  
Fuzzy Logic ◽  
Control System ◽  
Steady State ◽  
Pulse Width ◽  
Completion Time ◽  
Fuzzy Logic Controller ◽  
Pulse Width Modulation ◽  
Settling Time ◽  
Load Test ◽  
Rotary Encoder

ABSTRAKTroli rotari memerlukan sistem kontrol untuk mengatur rak ke posisi yang diinginkan. Penelitian ini berfokus pada sistem kontrol posisi rak menggunakan metode Fuzzy Logic Controller (FLC) dengan beban berbeda dari setiap pengguna. Masukan pada sistem kontrol FLC adalah error dan delta error dari sensor rotary encoder. Keluaran dari FLC adalah Pulse Width Modulation yang digunakan untuk mengontrol kecepatan motor DC. Hasil penelitian dari tiga variasi fungsi keanggotaan keluaran dengan beban pada satu rak, pengujian tanpa beban memiliki settling time antara 3,11 s hingga 3,24 s dan error steady state antara 3 hingga 8 counter. Pengujian dengan beban 250 g memiliki settling time antara 3,92 s hingga 8,80 s dan error steady state antara –5 counter hingga 4 counter. Sedangkan pengujian dengan beban 500 g memiliki settling time antara 4,66 s hingga 7,39 s dan error steady state antara 8 counter hingga 12 counter.Kata kunci: tempat penitipan barang, troli rotari, Fuzzy Logic Controller. ABSTRACTRotary trolley needs control system that used for rack control to the position. The research focused on rack position control system using the Fuzzy Logic Controller (FLC) method with different loads from each user. Inputs to the FLC control system are error and delta error from the rotary encoder sensor. The output of the FLC is Pulse Width Modulation which is used to control the speed of the DC motor. The results from 3 variations of the meeting results, the no-load test had a completion time of between 3.11 s to 3.24 s and steady-state conditions between 3 counters to 8 counters. Testing with a load of 250 g has a completion time of 3.92 s to 8.80 s and steady-state conditions between -5 counters to 4 counters. While testing with a load of 500 g has a settling time of 4.66 s to 7.39 s and steady-state conditions between 8 to 12 counters.Keywords: deposit box, rotary trolley, Fuzzy Logic Controller.

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