Here's the complete list of the 20 most popular Industrial Control how-to articles of 2008:
Number 1: Basics of the Electric Servomotor and Drive
- Part 1 reviews basic magnetics, motor control system elements, and electric servomotors.
- Part 2 examines the electrical and mechanical characteristics of permanent-magnet brush motors, as well as methods used in their control and their strengths and weaknesses.
- Part 3 begins a look at brushless permanent magnet motors and methods used in their control.
- Part 4 continues a look at brushless PM motors with a discussion of DQ and six-step control, a brief look at alternative brushless technologies, and a comparison chart of brush and brushless motors.
Number 2: A primer on high-side FET load switches
- Part 1 begins with an overview and a discussion of the pass element of the high-side switch.
- Part 2 includes a look at gate control, input logic and an applications synopsis.
Number 3: DC Motor Drive Basics
- Part 1 begins with a look at the operation of thyristor-fed DC motor drives.
- Part 2 continues with a look at converter output impedance, four-quadrant operation, single- and double-converter reversing drives and power factor and supply effects.
- Part 3 examines the operation of a standard dc drive system with speed and current control.
- Part 4 looks at the performance, characteristics and control arrangements of chopper-fed dc motor drives.
- Part 5 examines servo motors and both analog and digital position control.
Number 4: Open-Source Robotics and Process Control Circuit Examples
- Part 1 begins a look at how to interface with some common robotics-type sensors and actuators, and how these can be tied into an example system (in this case, the author's E-2 Autonomous Submarine Project).
- Part 2 considers the design of the circuit and coding for the project's stepper motor controller.
- Part 3 describes the development of the circuit and coding for the speed-controlled DC motor for the project's propulsion system.
- Part 4 follows the author as he prototypes the circuit and coding for the system's navigation system using a MEMS accelerometer circuit.
- Part 5 illustrates an approach to multidrop differential serial communications over relatively long distances as the author describes the circuit and firmware for an RS-422-compatible indicator panel.
Number 5: IGBT Tutorial
- Part 1 offers an up-close look at an IGBT device, and how to select one.
- Part 2 takes an in-depth look at an IGBT datasheet.
Number 6: Control System Grounding
- Part 1 focuses on increasing control system reliability with single-point ground techniques.
- Part 2 looks at ground wiring, shield grounds, and power supply grounding.
Number 7: The basics of control system design
- Part 1 compares and contrasts various approaches to embedded Proportional-Integral-Derivative (PID) control system design.
- Part 2 looks at tuning a proportional controller.
- Part 3 looks at tuning a PI controller.
- Part 4 moves beyond proportional and PI controllers to talk about tuning a PI+ controller and other related topics.
- Part 5 compares and contrasts tuning a digital PID controller to analog versions and to controllers using the Ziegler-Nichols Method.
- Part 6 concludes with a discussion of the PD and PID+ configurations comparing them to the other P, PI, PI+ and PID methods discussed earlier in the series.
Number 8: Implementing Embedded Speed Control for Brushless DC Motors
- Part 1 begins with a look at the basics of brushless motor control.
- Part 2 examines brushless motor control using Hall sensors.
- Part 3 considers the pros and cons of sensor vs. sensorless motor control.
- Part 4 examines 180 degree modulation for brushless motor control.
- Part 5 discusses V/f open-loop control in DC brushless DC motors.
- Part 6 focuses on the use of vector control to control torque and flux.
Number 9: Designing a Control System
- Part 1 offers an overview of compensation technologies and begins a look at the various types of compensators, how they might be implemented and how they are used to increase system performance.
- Part 2 continues with a look at cascaded integrators, derivative control, lead-lag and lag compensation, and design flow.
Number 10: The RS-485 Design Guide provides an introductory guide to designers new to RS-485 by discussing the main aspects of the standard.
Number 11: Designing a MCU-driven permanent magnet BLDC motor controller
- Part 1 begins by dealing with the basics.
- Part 2 looks at designing the hardware and software.
- Part 3 considers motor control timing considerations.
Number 12: Getting the most out of your twisted pair cable reviews relative performance bounds of twisted-pair cables, explores signal conditioning solutions, and sorts out the pros and cons of each solution.
Number 13: High-Linearity Analog Optocouplers Extend Working Insulation Voltage to 1.4 kV examines the internal operation and servo control mechanism of high linearity analog optocouplers and presents application examples ranging from motor control current sensing to traditional current-loop communication in process control.
Number 14: How to Set Up an IP-Based Camera Surveillance System shows how to install reasonably priced cameras over ubiquitous networks.
Number 15: Fundamentals of embedded video
- Part 1 explains how video signals are tailored to the human vision system, and reviews the basics of NSTC and PAL video signals.
- Part 2 discusses color spaces and gamma correction, and explains the basics of digital video.
- Part 3 looks at video flows from a system level, discussing the types of video sources and displays that comprise an embedded video application.
- Part 4 looks at video flows from a processor standpoint, focusing on features that enable efficient data manipulation and movement.
- Part 5 takes a look at a sample video application, touching on the major processing blocks involved.
Number 16: Increasing RS-485 Networking via Receiver Equalization describes two compensation methods, and suggests solutions for typical application scenarios.
Number 17: Field oriented control reduces motor size, cost and power consumption in industrial applications looks at how the implementation of motor control systems is simplified by modern digital signal controllers that can perform the numerically intensive calculations in real time.
Number 18: Measuring composite-video signal performance requires understanding differential gain and phase
- Part 1 provides an overview of composite NSTC/PAL video and the importance of differential gain and differential phase.
- Part 2 examines measurement conditions for differential gain/differential phase in datasheets.
: Why so many Industrial Network Protocols?
offers a guide to the growing number of industrial networks.
Number 20: Variable Speed Motor Control with Sensorless Functionality in Home Appliances makes the case for how state-of-the-art DSPs can achieve the goal of energy-efficient motor controls without neglecting the aspect of cost-effectiveness.