{"title":"Impact of Amplitude and Demodulation Errors on the Nonlinear Frequency Modulated Gyroscope","authors":"A. Sabater","doi":"10.1109/INERTIAL56358.2023.10104025","DOIUrl":"https://doi.org/10.1109/INERTIAL56358.2023.10104025","url":null,"abstract":"This paper provides experimental results on the impact of amplitude stability and demodulation errors on the nonlinear frequency modulated gyroscope (NFMG). While non-linear operation can allow for larger displacements and reduce the impact of thermomechanical noise, nonlinearity with micro-electromechanical system (MEMS) devices is typically avoided to reduce noise aliasing. This work shows that with sufficient amplitude stability, nonlinear operation can be constructively employed. It is shown both theoretically and experimentally that demodulation errors can allow quadrature to impact the rate estimate. By addressing demodulation errors, it is conjectured that NFMG stability will be dictated by fundamental sources such as angular gain or asymmetric cross-axis damping.","PeriodicalId":236326,"journal":{"name":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116912529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Patrick Tritschler, T. Hiller, T. Ohms, Wolfram Mayer, A. Zimmermann
{"title":"Sensor Individual Non-Orthogonality Correction in Low-Cost MEMS Gyroscopes Using Neural Networks","authors":"Patrick Tritschler, T. Hiller, T. Ohms, Wolfram Mayer, A. Zimmermann","doi":"10.1109/INERTIAL56358.2023.10103806","DOIUrl":"https://doi.org/10.1109/INERTIAL56358.2023.10103806","url":null,"abstract":"The research presented in this work compensates non-orthogonality over temperature stress effects in low-cost open-loop MEMS gyroscopes using neural networks (NN) for a sensor individual compensation to improve the sensor performance. The non-orthogonality is included in the sensor cross-axis sensitivity (CAS) of MEMS gyroscopes. Using the model-agnostic meta-learning algorithm (MAML) as a self-calibration algorithm and one initial measurement after soldering, an individual compensation model is generated for each sensor that predicts the non-orthogonality using the MEMS gyroscope's quadrature value as an input. It will be shown that a sensor-individual model outperforms a compensation model that should fit for all sensors at once like linear regression or classic NN and improves the non-orthogonality by 82.7 %, 7.5 % and 70 % for yx-, zx-, and zy-non-orthogonality,","PeriodicalId":236326,"journal":{"name":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124276817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Manufacture of hemi-spherical resonators using printable fused silica glass","authors":"Yahya Atwa, H. Shakeel","doi":"10.1109/INERTIAL56358.2023.10103948","DOIUrl":"https://doi.org/10.1109/INERTIAL56358.2023.10103948","url":null,"abstract":"In this paper, we present a new method for manufacturing millimeter-sized three-dimensional (3D) hemi-spherical resonators (HSRs) using a printable fused silica (FS) glass suspension. Our manufacturing process involves a combination of 3D printing, replication molding and casting steps to produce a complex FS-based HSR geometry. As proof of concept, we made a 9.5 mm-diameter and 0.5mm-thick resonator that was coated with thin films of chromium and gold ($132 nm$). We tested the resonator using electrostatic actuation and detection methods and were able to detect a single resonance mode at 6.74 kHz with an experimental quality factor of approximately 1,540. This manufacturing method is easy to use and yields high results (greater than 95%), but it does require further optimization to improve device performance due to relatively high surface roughness.","PeriodicalId":236326,"journal":{"name":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121281002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"INERTIAL 2023 Symposium Proceedings","authors":"","doi":"10.1109/inertial56358.2023.10103990","DOIUrl":"https://doi.org/10.1109/inertial56358.2023.10103990","url":null,"abstract":"","PeriodicalId":236326,"journal":{"name":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133047735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Buffoli, Pietro Segala, M. Gadola, T. Verdot, P. Robert, G. Langfelder
{"title":"Searching for the Origin of Zero-Rate Offset and Scale-Factor Drift in Nems-Based Nav-Grade Gyroscope","authors":"A. Buffoli, Pietro Segala, M. Gadola, T. Verdot, P. Robert, G. Langfelder","doi":"10.1109/INERTIAL56358.2023.10104013","DOIUrl":"https://doi.org/10.1109/INERTIAL56358.2023.10104013","url":null,"abstract":"The paper researches on the origin of scale-factor (SF) and zero-rate-offset (ZRO) drift in gyroscopes based on NEMS resistive sensing, towards effective calibration and compensation for further performance improvement. It is shown that the SF drift is affected by the mode-split behaviour in temperature, induced by differences in the temperature coefficient of frequency (TCf) of the two modes, and further perturbed by softening/hardening in operation. Measuring the mode-split with 10-mHz accuracy enables to understand the behaviour and adjust the drive motion to reduce the mode-split drift by a factor 100. At the same time, it is shown how temperature tracking via the drive-mode resonance, and following output compensation, brings down stability to values below 0.01 °/hr.","PeriodicalId":236326,"journal":{"name":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"33 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120816358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Momoka Matsumura, Yuna Koike, Ryo Seki, T. Yanagitani
{"title":"Shear mode bulk acoustic wave type gyroscope based on c-axis tilted ScAlN piezoelectric films","authors":"Momoka Matsumura, Yuna Koike, Ryo Seki, T. Yanagitani","doi":"10.1109/INERTIAL56358.2023.10104023","DOIUrl":"https://doi.org/10.1109/INERTIAL56358.2023.10104023","url":null,"abstract":"Transmission and detection type piezoelectric gyroscope with two c-axis tilted ScAlN films are fabricated. By adjusting the in-plane tilt angles to 90 degrees, the polarities of shear wave generated at upper layer (input) cannot be detected at lower layer (output) at a still state. However, due to the Coriolis force, the in-plane rotation of shear wave polarity can be detected when the device is rotated. The transmission and detection type gyroscope device was simulated using Mason's equivalent circuit model.","PeriodicalId":236326,"journal":{"name":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121374202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Prio-IMU: Prioritizable IMU Array for Enhancing Foot-mounted Inertial Navigation Accuracy","authors":"Chi-Shih Jao, Danmeng Wang, A. Shkel","doi":"10.1109/INERTIAL56358.2023.10103991","DOIUrl":"https://doi.org/10.1109/INERTIAL56358.2023.10103991","url":null,"abstract":"This paper presents a prioritizable Inertial Measurement Unit (IMU) array, referred to as the Prio-IMU, which is a systematic approach to mitigate the problem of insufficient sensor's Full-Scale Range (FSR) and bandwidth, in the case of foot-mounted Inertial Navigation Systems (INS). The Prio-IMU integrates multiple IMUs with different sensor characteristics, aligns all the sensor measurements to a universal coordinate frame, and prioritizes the usage of each integrated sensor based on different scenarios. We developed a Prio-IMU prototype integrating two IMUs (ICM-20948 and ICM-20649) and a 3-axis accelerometer (ADXL375) and conducted a series of pedestrian navigation experiments involving walking and running. We observed that during the heel-strike phases of running activity, accelerometer and gyroscope measurements as large as 70 [gravity (g)] and 2600 [degree per second (dps)] could be picked up by the developed Prio-IMU prototype. The experimental results showed that the navigation accuracy of the Zero-velocity-UPdaTe (ZUPT)-aided INS using the proposed Prio-IMU was improved by 79% and 82% along the horizontal and vertical directions, as compared to the case of using a single IMU.","PeriodicalId":236326,"journal":{"name":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115938177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optimization of Localization Error in Multi-Agent Systems through Cooperative Positioning: Autonomous Navigation in Partially Denied GNSS Environments","authors":"S. Shahkar, K. Khorasani","doi":"10.1109/INERTIAL56358.2023.10103968","DOIUrl":"https://doi.org/10.1109/INERTIAL56358.2023.10103968","url":null,"abstract":"This paper proposes a novel navigation technique in multi-agent autonomous vehicles to improve network localization in a partially denied GNSS (Global Navigation Satellite System) environment, where at least one agent (referred to as the leader) has access to its actual position, and the GNSS denied part of the network tends to achieve consensus over the position of individual agents, based on the position of the leader. In a large network of autonomous vehicles (as in the Internet of Drones (IoD), or UGV traffic control) a fully-denied GNSS environment is rarely the case, as on one hand GNSS cyberattacks (including malicious jamming, spoofing, and meaconing) cannot affect extensive spaces (due to limited energy resources of adversaries), and on the other hand naturally obscured GNSS signals are often locally restricted features, and rarely span over vast geographic areas. This paper argues that if any anonymous agent in a connected network has access to GNSS, then all other agents could estimate their own locations by sensing their relative distance with respect to adjacent agents, and also exchanging their own estimated locations with respective neighbours, hence, accomplishing “cooperative positioning”. It is shown that network localization is improved through optimization of its topology.","PeriodicalId":236326,"journal":{"name":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130727300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
William Jackson, Alan Marchiori, Stewart J. Thomas, Elizabeth Capaldi, S. Reese
{"title":"Verifying IMU Suitability for Recognition of Freshwater Mussel Behaviors","authors":"William Jackson, Alan Marchiori, Stewart J. Thomas, Elizabeth Capaldi, S. Reese","doi":"10.1109/INERTIAL56358.2023.10104026","DOIUrl":"https://doi.org/10.1109/INERTIAL56358.2023.10104026","url":null,"abstract":"Freshwater mussels are both an important and threatened part of our ecosystem. They are extremely efficient in cleaning natural water resources, yet surprisingly little is known about the behaviors of these animals, making threat mitigation difficult. As activity recognition based on the use of accelerometers is known to be effective in humans and other animals, this work applies such methods to the study of freshwater mussels in order to aid further scientific study. In this paper, we present results from a laboratory experiment where three inertial measurement units (IMU) were attached to the shell of mussels for approximately 24 to 48 hours. Over this period, we observed several interesting behaviors and verified the sensor arrangement can differentiate active and inactive periods as well as quantify gape frequency, duration, and intensity. Our future work is to develop a complete mussel sensor network where multiple mussels can be monitored in situ for an extended period of time. By better understanding the behavior of these animals, we aim to develop new ways to quantify ecosystem health and more effective conservation strategies.","PeriodicalId":236326,"journal":{"name":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114230249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Miloš Vujadinović, T. Hiller, Lukas Blocher, T. Balslink, Dusan Radovic, T. Northemann, A. Buhmann, B. Choubey
{"title":"Scale Factor Instability Noise in Mode-Split Open-Loop MEMS Gyroscopes","authors":"Miloš Vujadinović, T. Hiller, Lukas Blocher, T. Balslink, Dusan Radovic, T. Northemann, A. Buhmann, B. Choubey","doi":"10.1109/INERTIAL56358.2023.10103803","DOIUrl":"https://doi.org/10.1109/INERTIAL56358.2023.10103803","url":null,"abstract":"This paper presents analyses of scale factor instability noise (SIS) in mode-split, open-loop MEMS gyroscopes. As the name indicates, scale factor instability noise is a stochastic variation of a gyroscope's scale factor. If analyzed via Allan deviation measurement, it appears as bias instability proportional to the applied angular rate. We propose a theoretical model for the root causes of scale factor instability and validate it against measurements using 14 triaxial, consumer-grade devices and a high-precision rate table. The mechanisms are separated into contributions of 1/f noise of the analog-digital converter (ADC) gain and 1/f noise on the central mass voltage $V_{cm}$ acting electro-mechanically on the entire system through frequency tuning. The latter mechanism is separated further into effects of sense resonator gain and phase instability with susceptibilities of about -5%/V each. Our findings are substantiated by voltage variation experiments. The model can explain the observed scale factor instability noise of about 0.013 dph/dps or 3.6 ppm in full.","PeriodicalId":236326,"journal":{"name":"2023 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132298596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}