Current Sensing Power Switch SCR with ZMOTION Control

This reference design integrates a ZMOTION® Detection Module II and an AC Power Switch Relay based on the IXYS CPC1966 Module to create a motion-controlled currentsensing power switch. The CPC1966 Module includes dual, optically-isolated SCR outputs with enhanced zero-crossing detection circuitry to minimize load distortion. The ZMOTION Detection Module II is based on Zilog’s Z8FS040 MCU to provide a 5 […]

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Falling Weight Deflectometer (FWD) Field Survey

Falling weight deflectometers (FWDs) have been in use since the 1980s. These devices are used to measure pavement deflections in response to a stationary dynamic load, similar to a passing wheel load. The data obtained are used to evaluate the structural capacity of pavements for research, design, rehabilitation, and pavement management purposes. The basic components of a FWD are defined by reference documents such as […]

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Falling Weight Deflectometer

Falling Weight Deflectometer (FWD) is a non-destructive testing (NDT) and non-intrusive device. The FWD has been widely used in pavement engineering to evaluate pavement structural condition. The FWD plays a crucial role in selecting optimum pavement maintenance and rehabilitation strategies. The FWD is a tool used to achieve rapid and repeatable in-situ characterization of the pavement layer stiffness. Definitions: Falling […]

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Application of µ-synthesis Active Vibration Control technique to a Smart fin

This study presents a µ-synthesis active vibration control technique applied to the sinusoidally forced vibrations of a smart fin. The smart fin consists of a cantilever aluminum passive plate-like structure with surface bonded piezoelectric (PZT, LeadZirconate-Titanate) patches. The study presents the design of controllers via µ- synthesis, which effectively suppress the vibrations of the smart fin due to its first […]

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Design Tools for Piezoelectric Actuated Inchworm Positioners

Several piezoactuated inchworm motors are being developed for ultraprecision applications. Performance of the motor depends on the interaction of the frame stiffness and piezoelectric properties. Piezoactuator driven inchworm motors are being developed for applications which require accuracy in the range of nanometres while still having a range of centimetres. Industries such as semiconductor manufacture, photonics and laser machining have such […]

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