scholarly journals Design and Application of an Intelligent Robotic Gripper for Accurate and Tolerant Electronic Connector Mating

2012 ◽  
Vol 24 (3) ◽  
pp. 441-451 ◽  
Author(s):  
Fei Chen ◽  
◽  
Kosuke Sekiyama ◽  
Baiqing Sun ◽  
Pei Di ◽  
...  
Keyword(s):  
Manufacturing Systems ◽  
Printed Circuit Board ◽  
Fault Detection And Diagnosis ◽  
Circuit Board ◽  
Robotic Hand ◽  
Time Zone ◽  
Electronic Manufacturing ◽  
Event Driven ◽  
The Status ◽  
Detection And Diagnosis

In electronic manufacturing systems, the design of the robotic hand is important for successful accomplishment of the assembly task, and also for human and robot coworker coordinated assembly. Due to the restrictions on the architecture of traditional robotic hands, the status of assembly parts, such as position and rotation during the assembly process cannot be detected effectively. In this research, an intelligent robotic hand – i-Hand, equipped with multiple small sensors – is designed and built for this purpose. Mating connectors by robot, as an experimental case in this paper, is studied to evaluate i-Hand performance. A new model that converts the traditional time-zone-driven model to an event-driven model is proposed to describe the process ofmating connectors, within which, most importantly, the distance between the connector and deformable Printed Circuit Board (PCB) is detected by i-Hand. The generated curve has provided more robust parameters than our previously studied Fault Detection and Diagnosis (FDD) classifier. Various possible situations during assembly are considered and handled based on this event-driven work flow. The effectiveness of our proposed model and algorithm is proven in experiments.

Fault Diagnosis System of Engineering Equipment's Electrical System Using Dedicated Interface Adapter Unit

2013 ◽  
Vol 567 ◽  
pp. 155-160
Author(s):  
Yan Xi Ren ◽  
Xiao Qiang Yang ◽  
Qing Xia Li ◽  
Jun Da Chen
Keyword(s):  
Fault Detection ◽  
Fault Detection And Diagnosis ◽  
Object Oriented Programming ◽  
Circuit Board ◽  
Electrical System ◽  
Software Module ◽  
Master Program ◽  
Diagnosis System ◽  
Detection And Diagnosis ◽  
Signal Interface

The development of fault detection and diagnosis system is accomplished with the application of PXI interface technology, modular instrument and signal processing technology. The total technical scheme of host computer, portable test platform, signal adapter unit, test interface and cable together with peripheral components is introduced in the presented system. Consequently, the hardware includes master computer (fault test and diagnosis platform), PXI-bus data acquisition system, signal interface adapter, power supply system, interface unit, connection cable and peripheral dedicated test equipments. And the software is developed by C and LabWindows/CVI based on Win32 operating system. In addition, the modular and object-oriented programming are adopted in the software development. The software consists of three parts: the master program running on test and diagnosis platform, the client software module on signal adapter unit as well as the remote interface software module. It can implement fault detection of electrical system on replaceable circuit board and block of the hydraulic system or electrical system. So it can help equipment repairmen and operator perform quick repairs and maintenance to the electrical system for engineering equipment.

The Fault Detection and Diagnosis System of Hydraulic Excavator Based on PXI Interface Technology

2012 ◽  
Vol 268-270 ◽  
pp. 1440-1443
Author(s):  
Liang Mi ◽  
Keng Feng ◽  
Huan Liang Li ◽  
Li Fu Shao
Keyword(s):  
Fault Detection ◽  
Data Storage ◽  
Detection System ◽  
Management Control ◽  
Fault Detection And Diagnosis ◽  
Circuit Board ◽  
Hydraulic Excavator ◽  
Electrical System ◽  
Diagnosis System ◽  
Detection And Diagnosis

The fault detection and diagnosis system, which uses dedicated interface adapter unit and PXI interface modules to perform signal excitation and parameter testing, is introduced in this paper. Its firmware consists of PXI-bus control computer, display control unit, dedicated interface adapter unit, connection cable and power supply unit. The dedicated interface adapter unit (IAU) is the core of hardware platform, and is composed of chassis, I2C-bus data acquisition board, adapter and military aviation sockets. It carries out analog to digital, digital to analog, digital I/O transformation as well as serial communication and CAN-bus communication. The software of the fault detection system is of hierarchical modular structure with integration of system management control, fault detection and circuit hardware driver modules together with repair and diagnosis database. The software provides functions of human-machine interaction, equipment fault detection, fault diagnosis and analysis, repair guidance and data storage. Therefore, this system can implement fault detection of hydraulic excavator on replaceable circuit board and block of the hydraulic system or electrical system. And it can help equipment repairmen and operator perform quick repairs and maintenance to the electrical system and hydraulic circuit of the excavator.

scholarly journals Printed Circuit Board Drilling Machine Using Recyclables

Electronics ◽  
2018 ◽  
Vol 7 (10) ◽  
pp. 240 ◽  
Author(s):  
Carlos Robles-Algarín ◽  
William Echavez ◽  
Aura Polo
Keyword(s):  
Printed Circuit Board ◽  
Maximum Size ◽  
Transmission Mechanism ◽  
Circuit Board ◽  
Pid Controllers ◽  
Drilling Machine ◽  
Printed Circuit ◽  
Dc Motors ◽  
The Status ◽  
And Control

The implementation of a printed circuit board (PCB) drilling machine using recyclable materials and computer-aided control is presented. A mechanical system using a DC motor for movement on the X and Y axes, and a transmission mechanism by belts, pulleys, and a worm screw was made. For the Z axis, a mechanism based on a worm screw, nuts, and a stepper motor was implemented. The main board has two microcontrollers communicating in a master-slave configuration via a serial protocol. A real-time operating system (OSA) was implemented to optimize the data flow to the computer using the USB protocol, for communication with the slave microcontroller, positioning the Cartesian axes, and control the motors. The slave is responsible for monitoring the status of the encoders and limit switches, as well as the information delivery to the master. A Matlab-based user interface was developed to determine the coordinates of the holes to be drilled by processing a jpg image. This also allows the user to control the DC motors using PWM signals via configurable parameters of PID controllers. The end result is a drilling machine which able to operate both manually and via a computer, for drilling PCBs of a maximum size of 24 × 40 cm.

scholarly journals Towards Fault-Tolerant Strategy in Satellite Attitude Control Systems: A Review

2020 ◽  
Vol 12 (1) ◽  
pp. 14
Author(s):  
Hicham HENNA ◽  
Houari TOUBAKH ◽  
Mohamed Redouane Kafi ◽  
Moamar SAYED-MOUCHAWEH
Keyword(s):  
Attitude Control ◽  
Manufacturing Systems ◽  
Fault Tolerant ◽  
Anomalous Behavior ◽  
Fault Detection And Diagnosis ◽  
Attitude Control System ◽  
Satellite Attitude ◽  
Satellite Attitude Control ◽  
Complex Engineering ◽  
Detection And Diagnosis

Spacecrafts are known to be very complex engineering systems where many technological devices enter in interaction to guarantee the overall mission objectives. Regardless of those sophisticated manufacturing systems, faults/failures are inevitable during the satellite lifetime. This paper aims at discussing the state-of-the-art approaches proposed to guarantee the satellites’ attitude control system (ACS) performances when its components suffer from faults. The goal is to highlight their limits to address the specific challenges related to ACS. To localize and identify the potential faults, fault detection and diagnosis (FDD) methodologies are used in an earlier stage before the adaptation of the controller. The so-called fault-tolerant control (FTC) schemes have proven their capabilities during the last decade; nevertheless, those schemes still face some challenges that reduce their optimal performance in the aerospace industry. The contribution of this paper is to highlight the motivations and challenges of FTC/FDD methodologies when used to design spacecraft attitude controllers in the case of actuators and sensors anomalous behavior and to propose hints to address them.

scholarly journals Research and design of gasoline generator inverter

2021 ◽  
Vol 2125 (1) ◽  
pp. 012067
Author(s):  
Xiaoju Zhou ◽  
yun huang
Keyword(s):  
Design Process ◽  
Software Design ◽  
Printed Circuit Board ◽  
Low Cost ◽  
Circuit Board ◽  
Protection Measures ◽  
Printed Circuit ◽  
The Status ◽  
Monitoring Software ◽  
Research And Design

Abstract The paper introduces the design of gasoline generator inverter. First of all, I made a simple introduction to the gasoline generator, and a detailed description of the inverter circuit respectively. Then the hardware and software design process of the system are described in detail. In the process of hardware design, I designed the whole circuit and each module, and made a printed circuit board. During the software design process, MFC (Microsoft Foundation Classes) is used to design an monitoring software of inverter. The software communicates with the main chip through a serial port to obtain and display the status of the inverter and set the parameters of the inverter. Finally, the test of the whole system is completed. The design has the advantages of good output waveform, comprehensive protection measures, low power consumption and low cost.

Heterogeneous Process Development for Electronic Device Packaging with Direct Printed Additive Manufacturing

2012 ◽  
Vol 2012 (1) ◽  
pp. 000961-000966
Author(s):  
R. X. Rodriguez ◽  
K. Church ◽  
X. Chen
Keyword(s):  
Additive Manufacturing ◽  
Printed Circuit Boards ◽  
Printed Circuit Board ◽  
Process Development ◽  
Electronic Device ◽  
Circuit Board ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Wire Bonds ◽  
The Status

Next generation electronics will not change drastically in function; batteries will last longer, devices will have more functions and devices will take unique shapes, but for the next several years, electronics will travel the path it has been traveling for a couple of decades. To meet the demands of more functions per device and unique shapes, the status quo of electronic manufacturing cannot persist. Solder, wire bonds, FR4, printed circuit boards, surface mount and packaging will fight for survival, but just as hand held phones have evolved, so will the electronics that support them. Standard electronic packaging techniques are reaching size and density limits forcing a search for alternative approaches. The idea of using Additive Manufacturing as an alternative for packaging has not been taken seriously, but there is an opportunity to demonstrate the significant advantages of true 3D electronic packages by allowing the package to be the printed circuit board and by utilizing direct print and bare die approaches to print and structure diverse electronics.

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