Performance Verification of a Flexible Vibration Monitoring System

Abstract

The performance of measurement or manufacturing systems in high-precision applications is dependent upon the dynamics of the system, as vibration can be a significant contributor to the measurement uncertainty and process variability. Technologies making use of accelerometers and laser vibrometers are available to rapidly measure and process structural dynamic data but the software infrastructure is yet to be available in an open source or standardised format to allow rapid inter-platform use. In this paper, we present a novel condition monitoring system, which uses commercially available accelerometers in combination with a control-monitoring infrastructure to allow for the appraisal of the performance of a measurement or manufacturing system. A field-programmable gate array (FPGA)-based control system is implemented for high-speed data acquisition and signal processing of six triaxial accelerometers, with a frequency range of 1 Hz to 6000 Hz, a sensitivity of 102.5 mV/ms−2 and a maximum sample rate of 12,800 samples per second per channel. The system includes two methods of operation: real-time performance monitoring and detailed measurement/manufacturing verification. A lathe condition monitoring investigation is undertaken to demonstrate the utility of this system and acquire typical machining performance parameters in order to monitor the “health” of the system.

Characterisation of a multi-view fringe projection system based on the stereo matching of rectified phase maps

“…The system comprises four DSLR cameras (Nikon D3500, 4496 × 3000 pixels), and two digital light processing (DLP) projectors (DLPC300 Texas Instruments) with a digital micromirror device (608 × 680 pixels). All cameras and projectors are mounted on a rigid metal frame to reduce mechanical vibration [48]. The projector's digital micromirror device chip is used to project a series of computer-generated fringe patterns onto the surface of the object, and the cameras capture the distorted fringes.…”

Experimental Study on the Response of Hand-Transmitted Vibration from an EVA Power Tool

“…In addition, ensure that the three measurement directions of each acceleration sensor correspond to the X h -axis, Y h -axis, and Z h -axis corresponding to the biodynamic coordinate system one by one [18]. When operating the power tool with bare hands, the subjects applied approximately equal grip force to make the sensor contact tightly with the handle and palm according to ISO 5349-2:2001.…”

Analyses of Vibration Signals Generated in W. Nr. 1.0038 Steel during Abrasive Water Jet Cutting Aimed to Process Control

“…Accelerometers represent one of the most often used type of sensors used for detection of vibration during machining operations. The main advantage of the accelerometer is its linearity over a wide range of frequencies, which enables us to identify either the condition of cutting operation [ 19 , 20 ] or monitor the cutting tool condition [ 21 ] and prevent its sudden breakage [ 22 ] or malfunction [ 23 , 24 ]. Accelerometers are widely used also in other technical applications [ 25 ]; therefore, one can utilise a wide spectrum of knowledge concerning signal processing and interpretation.…”