Research on a Control Unit of in-Wheel Motor Applied in Mobile Robot

2011 ◽  
Vol 52-54 ◽  
pp. 133-138
Author(s):  
Qiang Yin ◽  
Quan Jie Gao ◽  
Xiao Peng Chen ◽  
Jiu Lin Zuo
Keyword(s):  
Mobile Robot ◽  
Software Design ◽  
Control Unit ◽  
Driving System ◽  
Drive Control ◽  
Working Principle

Compared with the driving system of traditional motors, the advantages of in-wheel motor are described in this article. A kind of drive control unit of in-wheel motor is designed for mobile robot, and its composition, working principle, hardware and software design are described. Experiments show that the control unit can make a good performance to meet the requirements of mobile robot.

The Key Issues to the Switch of the Multi-Channel Video Signal

2012 ◽  
Vol 241-244 ◽  
pp. 2210-2214
Author(s):  
Yao Wu ◽  
Nan Liu ◽  
Xiao Jun Ren
Keyword(s):  
Software Design ◽  
Control Unit ◽  
Video Signal ◽  
Key Technology ◽  
Switch System ◽  
Key Issues ◽  
Working Principle ◽  
Signal Switch ◽  
Switching Devices ◽  
Hardware Structure

This paper proposes a multi-channel video signal switch system. The authors introduce a key technology which uses AD8108/AD8109 as switching devices, micro-controller LPC2214ARM as the control unit to form a multi-channel video switch. Firstly, this paper analyzes the working principle of AD8108/AD8109 and LPC2214. Then the authors give the hardware structure of the multi-channel video switch system, and the software design of the system. Finally, this paper puts forward the key issues to the switch of the multi-channel video signal after experiments. Facts have shown that these factors must be taken into account in the design of successful video signal switch systems.

Design of the Half-Bridge Switching and Regulated Power Supply Based on PWM

2012 ◽  
Vol 546-547 ◽  
pp. 352-356
Author(s):  
Jian Wei Liang ◽  
Yin Feng Wu ◽  
Ling Liang
Keyword(s):  
Software Design ◽  
Power Supply ◽  
Pulse Width ◽  
Power Supply System ◽  
Control Unit ◽  
Supply System ◽  
Microprocessor Control ◽  
Modeling Simulation ◽  
Power Simulation ◽  
Hardware Circuit

The article introduces the design of the half-bridge switching and regulated power supply system which is based on PWM. The design mainly consists of regulated power supply’s structure of basic hardware circuit, its working principles and the process of modeling simulation and software design. The control circuit controls SG3525 chip to output PWM wave through the Microprocessor Control Unit (MCU) of AT89C51 and drives IGBT through the chip of EXB841 as well. The MCU is also used to realize the keyboard process and controls of the pulse width and frequency. Taking advantage of Simulink (dynamic simulation Toolbox) and SimPowerSysterm (power simulation Toolbox) of MATLAB, it simulates the designed regulated power supply. According to the simulation result of this design, the system has high stability and good output waveform. The operation of the design is simple and clear with less software operation and higher speed.

Approaches to motion control intellectualization of a mobile robot

2021 ◽  
Author(s):  
Stepan A. Lapshinov ◽  
Vadim A. Shakhnov ◽  
Anton V. Yudin
Keyword(s):  
Mobile Robot ◽  
Motion Control ◽  
Control Device ◽  
Alternative Methods ◽  
Design Solution ◽  
Movement Direction ◽  
Software Complex ◽  
Advantages And Disadvantages ◽  
Drive Control ◽  
Omni Wheel

The paper considers the principles of intelligent motion control of mobile robots using the example of omni-wheel modules. The proposed design solution uses components of movement intelligence in any direction, receiving commands from a human operator or above a standing automatic control device, consisting of an angle of movement direction and the required distance of movement. This paper presents an embodiment of using omni-wheels to move a mobile robot over a flat surface. Features of device and application of drive with three omni-wheels in comparison with differential drive are considered. Kinematics, basic principles of motion control formation, hardware and software complex for its implementation are described. There were revealed two alternative methods of organization of drive control in conditions of shortage of low-level hardware resources on the basis of 8-bit microcontroller, their advantages and disadvantages have been analyzed. Process support and materials have been presented that allows realizing the competitive advantages of development while minimizing the cost of components. Features of mobile robot travel route development have been mentioned on the example of competitive practice.

The Design of Wireless Load Monitoring System of Auxiliary Shift Based on Labview

2012 ◽  
Vol 182-183 ◽  
pp. 753-757
Author(s):  
Xing Ming Xiao ◽  
Na Ma
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Software Design ◽  
Design Principle ◽  
Monitor System ◽  
Actual Load ◽  
Load Monitoring ◽  
Working Principle ◽  
Formation Design

According to the working principle of load monitored oil pressure, in order to real-time monitor the actual load of auxiliary shift, and make the execution of alarming on the malfunctions in the working state of the equipment concerned, we designed a monitor system of auxiliary shift based on Labview[1]. This system can provide guarantee of the safety lifting. So the formation, design principle, hardware and software design well be introduced in this article.

scholarly journals Research on collaborative control of double-plunger gas prover based on EtherCAT

2020 ◽  
Vol 24 (5 Part A) ◽  
pp. 2667-2687
Author(s):  
Zhipeng Xu ◽  
Feipeng Xu ◽  
Dailiang Xie
Keyword(s):  
Flow Rate ◽  
High Speed ◽  
Gas Flow ◽  
Control Unit ◽  
External Diameter ◽  
Piston Cylinder ◽  
Collaborative Control ◽  
Critical Nozzles ◽  
Parallel Mode ◽  
Working Principle

Piston prover has been widely used as a gas flow standard for its advantages of high accuracy in standard volume, flow stability and repeatability. It has also been employed as the primary gas flow standard in many countries to calibrate meters. However, it is difficult to ensure the uniformity of the inside dimension of the piston, thus the application of conventional piston provers are limited by the maximum calibration flow generated by the piston cylinder volume. In this paper, an improved piston gas prover that mainly consists of two uniform plungers was proposed. Their external diameter constitutes the flow standard. The plungers are driven by servo motor, and the high speed fieldbus EtherCAT has been introduced as the control unit. Hence the two pistons could work collaboratively and operate in three modes: single-piston mode, double-pistons parallel mode, and double-pistons reciprocating mode. Besides generating steady-flow rate, the double-plunger prover can even produce an unsteady-flow rate which could be used to research the dynamic characteristics of flow meters. The structure and working principle of the three modes were carefully introduced. Then experiments for calibrating critical nozzles were carried out, and the results show that the repeatability of the discharge coefficient could be better than 0.06%, and the pressure fluctuation during the process was less than 50 Pa.

Optimisation of a Polarisation Nephelometer

2021 ◽  
pp. 87-95
Author(s):  
Victor G. Oshlakov ◽  
Anatoly P. Shcherbakov
Keyword(s):  
Personal Computer ◽  
Position Control ◽  
Control Unit ◽  
Numerical Control ◽  
Radiation Beam ◽  
Drive Control ◽  
Control Units ◽  
Smooth Motion ◽  
Approximation Errors ◽  
Scattering Volume

An analysis of the influence caused by polarization nephelometer parameters on the scattering matrix measurement accuracy in a non-isotropic medium is presented. The approximation errors in the actual scattering volume and radiation beam by an elementary scattering volume and an elementary radiation beam are considered. A formula for calculating the nephelometer base is proposed. It is shown that requirements to an irradiation source of a polarizing nephelometer, i.e. mono-chromaticity and high radiation intensity and directivity in a wide spectral range can be satisfied by a set of high brightness LEDs with a radiating (self-luminous) small size body. A 5-wavelength monochromatic irradiation source, with an emission flux of (0.15–0.6) W required for a polarization nephelometer, is described. The design of small-sized polarizing phase control units is shown. An electronic circuit of a radiator control unit based on an AVR-Atmega 8-bit microcontroller with feedback and drive control realized by means of an incremental angular motion sensor and a software PID controller is presented. Precise and smooth motion of the radiator is ensured by standard servo-driven numerical control mathematics and the use of precision gears. The system allows both autonomous adjustment of the radiator’s reference positions and adjustment by means of commands from a personal computer. Both the computer and microcontroller programs were developed with the use of free software, making it possible to transfer the programs to Windows‑7(10), Linux and embedded Linux operating systems. Communication between the radiator’s position control system and the personal computer is realised by means of a standard noise immune USB-RS485 interface.

A PID&AGC Method for Micro Vibration Gyroscope Drive System

2013 ◽  
Vol 562-565 ◽  
pp. 357-362
Author(s):  
Shao Hua Niu ◽  
Dan Dan Hong ◽  
Shi Qiao Gao
Keyword(s):  
Control System ◽  
Vibration Frequency ◽  
Inertial Sensor ◽  
Drive System ◽  
High Q ◽  
Gyro System ◽  
Drive Control ◽  
Working Principle ◽  
Micro Vibration

As a typical inertial sensor, vibration micro-gyro is extensively studied. According to its working principle, drive control system is an important element for the gyro system. The role of drive control system is to keep the drive modal stability including stable vibration frequency and amplitude. The PLL method is usually used to realize the drive system. However, it has some shortcomings used to high Q vibration micro-gyro. In this paper, the problems of the PLL method are analyzed, and a PID & AGC control system is introduced. By simulating and measuring, it is indicated that this method is fit for driving high Q vibration micro-gyro.

FEM-Based Lifting Permanent Magnetic Chuck Design

2013 ◽  
Vol 655-657 ◽  
pp. 355-358 ◽  
Author(s):  
Ning Ding ◽  
Yu Mei Song ◽  
Lina Wang ◽  
Ding Tong Zhang ◽  
Li Gong Ding
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Permanent Magnet ◽  
Circuit Design ◽  
Magnetic Circuit ◽  
Saving Energy ◽  
Driving System ◽  
Working Principle ◽  
Optimal Saving ◽  
Element Method

The optimal saving energy permanent magnet lifting chuck has been designed. Working principle of this technology is introduced. Magnetic circuit design is carried out by finite element method (FEM). At the same time, a perfect self-acting driving system has been invented for picking and releasing loads fast and conveniently without using any electricity at all. Industry prototype was manufactured, and it verified that the proposed lifting permanent magnetic chuck was feasible.

Research of Urine Analyzer Based on Color Sensor

2013 ◽  
Vol 739 ◽  
pp. 636-639 ◽  
Author(s):  
Quan Xing Liu ◽  
Hai Yan Chen ◽  
Dong Hua Lu
Keyword(s):  
Clinical Medicine ◽  
Urine Analysis ◽  
Control Unit ◽  
Test Strip ◽  
Network Interface ◽  
Color Test ◽  
Color Recognition ◽  
Color Sensor ◽  
Diagnosis Method ◽  
Working Principle

Urine analysis is used in clinical medicine diagnosis method. In this paper, we introduce the urine analyzer working principle. Using the color recognition sensor chip, we design a fast urine analyzer, which is mainly constituted by several parts: LCD, keyboard control, serial communication, network interface, print, ARM Control unit, sample of sensors, motion control, color capture, brightness control, etc. we studies the test strip tests, the specific gravity of testing theory, the test principle of the turbidity , the color test, the principle of color sensor and gives a the flow chart of color test subprogram.

Research on Robot Vision Technology Based on ARM and DSP for Age and Disabled Helping Robot

2010 ◽  
Vol 455 ◽  
pp. 42-46 ◽  
Author(s):  
C.Z. Wang ◽  
Xiao Dong Zhang ◽  
Xue Zhi Wu
Keyword(s):  
Mobile Robot ◽  
Software Design ◽  
Vision System ◽  
Robot Vision ◽  
The Elderly ◽  
Disabled People ◽  
The Disabled

The robot vision technology designed to help the elderly and the disabled people are studied on a mobile robot in the thesis, and its robot vision system based on ARM and DSP is mainly designed, respectively. After hardware construction and software design, the experiments are taken to verify the feasibility of the application of the robot vision technology on the age and disabled helping robot.

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