Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Sachin Nadig"'
Publikováno v:
IEEE Internet of Things Journal. 8:5009-5022
3-D-printed structures integrated with laser-cut spiral PZT bimorphs are used to obtain low mechanical resonance frequencies for energy harvesting and a vibration-activated mechanical switch. This structure is used to realize a batteryless vibration
Autor:
Amit Lal, Sachin Nadig
Publikováno v:
IRPS
Inertial sensors are pervasive in handheld electronics, UAVs, ioTs, and wearable electronics, as they enable motion awareness. MEMS inertial sensors have been successful at the SWAP corresponding to a few mm3 volumes and a few milliwatts. However, th
Publikováno v:
2017 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL).
This paper reports a mechanical stage with 3-axis angular dither capability used to calibrate 3-axis gyroscope chip. A combination of piezoelectric and magnetic actuation provides in-plane and out-of-plane motion. The 3-axis dither capability is cruc
Publikováno v:
2017 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL).
We experimentally demonstrate a mode-matched MEMS gyroscope capable of measuring rates as low as 0.2 °/hr stable on a time scale of half-a-month without ovenization or stress isolation - a long-term performance unprecedented for traditional micromac
Publikováno v:
2017 IEEE 30th International Conference on Micro Electro Mechanical Systems (MEMS).
This work presents frequency tuning and quadrature cancellation of a bulk-PZT gyroscope. We leverage non-linearity of elasticity and piezoelectric coupling in lateral PZT bimorphs for frequency and quadrature tuning. Frequency and quadrature tuning i
Publikováno v:
2016 IEEE International Symposium on Inertial Sensors and Systems.
We report a ∼50PPM precision in-run calibration platform for MEMS gyroscopes. In this work we demonstrate an integrated system capable of extracting instantaneous scale factor, drifts and cross axis sensitivities of the commercial ADXRS646 Z-axis g
Publikováno v:
2016 IEEE 29th International Conference on Micro Electro Mechanical Systems (MEMS).
We demonstrate simultaneous extraction of the scale factor and cross axis sensitivity of a commercial 6-DOF Inertial Measurement Unit (IMU), which has three gyroscopes and three accelerometers, using a multi-axis, mm-scale piezoelectric dither stage.
Publikováno v:
2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS).
We report a laser micromachined piezoelectric bulk-PZT (Lead Zirconate Titanate) Z-axis Coriolis force gyroscope, which utilizes spring-mass resonances of the in-plane PZT bimorphs and a PZT proof-mass. The gyroscope is compatible to be monolithicall
Publikováno v:
2015 IEEE International Symposium on Inertial Sensors and Systems (ISISS) Proceedings.
We report a multi-axis piezoelectric multi-modal mechanical stimuli stage capable of in-situ calibration of MEMS gyroscopes attached to the stage. The system is fully self-contained with electronics for portable operation. In this work, we demonstrat
Publikováno v:
2015 28th IEEE International Conference on Micro Electro Mechanical Systems (MEMS).
We report a 2-axis (X-Y) piezoelectric energy harvester, whose sensitive axis in-plane is rotationally invariant, a result achieved by spiral in-place bimorph, which can be modeled as a cascade of lateral bimorphs. This is different than conventional