By Dan Zhang, Bin Wei

This e-book introduces the cutting-edge applied sciences in mechatronics, robotics, and MEMS units so as to increase their methodologies. It offers a follow-up to "Advanced Mechatronics and MEMS units" (2013) with an exploration of the main updated applied sciences and their purposes, proven via examples that provide readers insights and classes discovered from real tasks. Researchers on mechatronics, robotics, and MEMS in addition to graduate scholars in mechanical engineering will locate chapters on:

  • Fundamental layout and dealing rules on MEMS accelerometers
  • Innovative cellular technologies
  • Force/tactile sensors development
  • Control schemes for reconfigurable robot systems
  • Inertial microfluidics
  • Piezoelectric strength sensors and dynamic calibration techniques

...And extra. Authors discover functions within the parts of agriculture, biomedicine, complex production, and house. Micro-assembly for present and destiny industries is usually thought of, in addition to the layout and improvement of micro and clever manufacturing.

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Extra info for Advanced Mechatronics and MEMS Devices II

Sample text

Vibration waveforms are interpreted and processed in a variety of ways such as peak values and variance of the signal in the time domain, and power spectral analysis in the frequency domain [4]. Vibration has traditionally been sensed using piezoelectric accelerometers. These are accurate and reliable, but have some inherent problems: they are difficult to mass-produce, and they have high source impedance, which means that their signals must be very carefully amplified. Moreover, the use of the traditional piezoelectric accelerometers for simultaneous multiple data collection points was considered to be impractical; this is mainly because of their cost as well as the costs of the associated electronic signal conditioning units.

In general, a higher natural frequency allows a larger measuring frequency range of an accelerometer. However, the use of vibration analysis in condition-monitoring is based on three key points: 1. A frequency component identifies the basic problem. 2. The amplitudes of this component and its harmonics indicate the severity of the problem. 3. Phase relationships are used to distinguish between looseness and eccentricity (fault diagnosis). While a vibration spectrum can reveal much about the ranges of motion and flexibility (resonance) of a machine, the frequency domain does not yield all the answers.

19 Workflow of smart sensor In terms of sustainability, MEMS-based smart sensor has potential to integrate energy harvesting technology in the future, which is another trending topic in modern engineering. Most commercial digital integrated circuit provide programmable sleep/hibernate mode to conserve energy consumption. 6. 2 MEMS Accelerometers: Testing and Practical Approach for Smart Sensing. . 8 W 7 Concluding Remarks MEMS accelerometers offer excellent alternatives to conventional types of those transducers as there is no need to carry heavy charge amplifiers, but the choice has to be made according to specifications and through validation tests.

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