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Industrial Motion Control Design

Industrial Motion Control

High-power industrial motion control is a demanding art requiring a mix of power electronics techniques coupled with modern digital signal processing. Orchid's two board industrial motion control set provides multiple high power pulse width modulation drivers (PWM), precision analog servo circuitry, and digital signal processing.

Digital Signal Processing—Pulse Width Modulation

High speed digital signal processing algorithms continuously provide eight streams of pulse width modulation data to the motor control power electronics. Low-voltage, high-current MOSFET and TRENCHFET devices drive power electronics in an H-bridge configuration. The two board set provides isolation between the power electronics on the lower board and the control systems on the upper board.

High Precision 24-Bit Analog Electronics

Twenty Four Bit high-precision analog conversion electronics together with Pulse Width Modulation control systems form the control plane of this multi-channel motion control system. Data conversion rates of 40KHz together with multichannel PWM outputs enable high performance.

Rapid Design Cycle

From concept to running prototype units in less than six weeks! Working with our client's sketches and verbal requirements, Orchid delivered fast-paced, accurate product development know-how. Orchid Technologies really delivers!

• Specification Generation
• Detailed Schematic Design
• Component Engineering
• Circuit Board Mechanical Design
• Electronic Simulation
• Lattice ASIC Development
• Component Procurement
• Circuit Board Layout
• Circuit Board Fabrication
• Circuit Board Assembly
• Prototype Debug
• Firmware Development
• Detailed Design Documentation
• Design for Manufacturability

Orchid Technologies Delivers

The development of Electronics Technology solutions for our OEM clients is Orchid's entire business. Rapid design cycles, demanding technical requirements, and unforgiving schedules set us apart. Visit www.orchid-tech.com to view recent designs.

About the Author

Paul Nickelsberg, President and CTO of Orchid Technologies Engineering and Consulting, Inc., has 20 years experience in electronic products design. He can be reached at paul@orchid-tech.com or 978-461-2000 X111.

If the company wishes to set 99.7% control limits based on samples of size 500, what would these limits be?

A computer diskette manufacturer is concerned that some diskettes have bad sectors that would cause a diskette to hold less information than it was intended to hold. In the past, only 5% of these diskettes have had bad sectors. If the company wishes to set 99.7% control limits based on samples of size 500, what would these limits be?

Using the normal approximation of the binomial:
the probability of a bad sector = 0.05=p; prob of no bad sector=q=0.95
z = (p-0.05)/ sqrt(p*q/500)
99.7% implies a 3-sigma confidence interval.

3*sqrt(0.05*0.95/500) = 0.02924

[ 0.05-0.02924, 0.05+0.02924], the proportion of bad diskettes will lie between these limits 99.7% of the time for batches of 500.

Qatar to host GCC quality control meet
Qatar will host the 5th Gulf Co-operation Council (GCC) Conference on Quality Control initiative among government bodies on April 11 and 12, it was announced yesterday.

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