Motor Control/Sensors
Variable Speed Motor Control with Sensorless Functionality in Home Appliances
Regulatory standards enforce more energy-efficient solutions even in cost-sensitive market environments such as white goods. State-of-the-art DSPs can achieve the goal of energy-efficient motor controls without neglecting the aspect of cost-effectiveness.
Attacking RFID--Part I
Find out how attacks take place by reading Part I of a 2-part series from 'RFID Security.' Chapter 3--Threat and Target Identification--looks at how they do it.
Analyzing circuit sensitivity for analog circuit design
Delve deep into the mathematics of filters and their sensitivities to component variations, using tools such as Monte Carlo analysis to determine how much a filter's transfer function will vary.
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Industrial Instrumentation
Yet More On Decoupling, Part 6: Simulating the complete op amp/power supply circuit
The sixth and final installment of this series on power-supply decoupling and bypass capacitors simulates the interaction effects of the complete circuit, by driving a signal into an amplifier so that the load current itself causes the excitation on the supply rails.
Spectral analysis and modulation, part 4: Modulation
This article examines amplitude and frequency modulation schemes including amplitude shift keying, frequency shift keying, binary frequency shift keying, minimum shift keying, and pulse amplitude modulation.
Get to 'first time right' in analog/mixed-signal design
Digital designs are usually right the first time. Analog/mixed-signal designs, on the contrary, are notorious for requiring more than just one cycle.
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Process Control
Efficient UMTS Turbo MAP decoding on a DSP
ADI lays out an efficient implementation of a UMTS Turbo MAP decoder. Optimization techniques are presented which allow the implementation to compute one LLR output in 36 cycles.
A bypass-capacitor dialogue peels back the layers, Part 1
The low-glamour but extremely vital subject of bypass capacitors and decoupling gets additional investigation through a basic dialogue
NATO's Engineering Challenge
Find out how North Atlantic Treaty Organization (NATO) meets multinational supply chain and logistics challenges by reading Part II of a 2-part series. The findings can provide insight into understanding engineering and security vulnerabilities to identify where things could go wrong in any business supply chain.
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Networking
Increasing RS-485 Networking via Receiver Equalization
Robustness and reliability in long distance data transmission have made RS-485 the industry's interface workhorse, particularly in building and industrial automation. This article describes two compensation methods, and suggests solutions for typical application scenarios.
Ensuring low power in wireless mesh sensor networks
Wireless sensor communications and low power go hand in hand. In fact, low power is just as important as the reliability of the communications itself. Before the advent of wireless sensor communications, low power was synonymous with low current consumption.
The RS-485 Design Guide
RS-485 has emerged as the industry's seemingly eternal interface workhorse. This article serves as an introductory guide to designers new to RS-485.
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Robotics and Prototyping
The yin and yang of dynamic allocation
Despite its risks, dynamic memory allocation is a valuable facility that you shouldn't blindly disregard.
Used robots improve safety, cut costs
Small companies can automate without breaking their budget by buying used equipment. An Ohio-based welding provider shows how.
CCFL controllers achieve 300:1 dimming ratio
Cold-cathode fluorescent lamps are used to backlight liquid crystal displays in industrial systems, which often require a wide dimming ratio.
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About the Industrial Control DesignLine How-To Section
Industrial Control DesignLine's How-To Section delivers detailed engineering articles focused on the design and development of industrial control systems, factory automation equipment, sensors, motor control designs, industrial robots, industrial Ethernet networking systems, ZigBee systems, and industrial instrumentation. Design topics covered in this category include process control, sensor design, motor control design, radio frequency (RF) design, Ethernet networking, prototyping, robotics, and more.
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