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MAX3095CSE 产品设计参考手册 - Maxim Integrated(美信)
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± 15kV ESD保护, 10Mbps的, 3V / 5V ,四路RS - 422 / RS - 485接收器 ±15kV ESD-Protected, 10Mbps, 3V/5V, Quad RS-422/RS-485 Receivers
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Maxim > Design Support > Technical Documents > Reference Designs > Communications Circuits > APP 3161
Maxim > Design Support > Technical Documents > Reference Designs > Interface Circuits > APP 3161
Keywords: MAX3098E,MAX3095,robust fault-tolerant, motion-control,feedback systems
REFERENCE DESIGN 3161 INCLUDES: Tested Circuit Schematic Description Layout
Designing Robust and Fault-Tolerant Motion-Control
Feedback Systems
By: Phill Leyva
Mar 30, 2004
Abstract: This article reviews basic servo systems and development of the fault-tolerant feedback systems for
servo systems. Controller receiver circuit design, proper PC-board receiver circuit layout, and the encoder's
signal cable and termination are discussed. Additionally, various types of industrial feedback encoders are
presented, along with the various types of faults that can develop in a servo feedback system.
The key to robust operation in a system lies in the way it handles mechanical and electrical faults. This
article discusses the design of a robust and fault-tolerant motion-control system whose feedback paths
incorporate quadrature encoders.
Servo Systems
Modern automated systems incorporate closed-loop feedback for motion control. They typically include a
servo system that consists of a motor driver and feedback elements combined in a manner that gives
accurate and stable control over speed and position. The various system-level components of a typical servo
system are illustrated in Figure 1.
Figure 1. This DC brushless servo system uses quadrature optical encoders to provide velocity and position
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