S. Weiner, Xuejian Wu, Z. Pagel, Dongzoon Li, Jacob Sleczkowski, Francis Ketcham, H. Mueller
{"title":"A Flight Capable Atomic Gravity Gradiometer With a Single Laser","authors":"S. Weiner, Xuejian Wu, Z. Pagel, Dongzoon Li, Jacob Sleczkowski, Francis Ketcham, H. Mueller","doi":"10.1109/INERTIAL48129.2020.9090014","DOIUrl":"https://doi.org/10.1109/INERTIAL48129.2020.9090014","url":null,"abstract":"We present a design for a cold atom gravity gradiometer with a single laser diode that will operate while mounted to an unmaned aerial vehicle. Our design exhibits a lightweight aluminum vacuum chamber and a novel diffraction grating magneto-optical trap.","PeriodicalId":244190,"journal":{"name":"2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128745695","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}
Bowen Xing, Bin Zhou, Qi Wei, Bo Hou, Dong-mei Li, Tian Zhang, Rong Zhang
{"title":"Study on the Effect of Quadrature Error on In-Phase Output Based on Electrostatic Compensation","authors":"Bowen Xing, Bin Zhou, Qi Wei, Bo Hou, Dong-mei Li, Tian Zhang, Rong Zhang","doi":"10.1109/INERTIAL48129.2020.9090091","DOIUrl":"https://doi.org/10.1109/INERTIAL48129.2020.9090091","url":null,"abstract":"Quadrature error is an important factor limiting the performance of MEMS-gyroscope. It is caused by the stiffness asymmetry due to processing error. In this paper, the quadrature cancellation structure is designed for center support quadruple mass gyroscope (CSQMG). The experiment results show that the structure can reduce the quadrature error of the gyroscope greatly and the mechanical coupling. Based on the quadrature cancellation structure, the effect of the quadrature error on the in-phase detection signal is studied. Although the phase difference between the quadrature and the in-phase signal is 90 degrees, quadrature cancellation can also reduce the bias output. This is because when the quadrature error decreases, the anchor damping coupling decreases.","PeriodicalId":244190,"journal":{"name":"2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115331267","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 2020 Author Index","authors":"","doi":"10.1109/inertial48129.2020.9090020","DOIUrl":"https://doi.org/10.1109/inertial48129.2020.9090020","url":null,"abstract":"","PeriodicalId":244190,"journal":{"name":"2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121885646","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}
Sean Yen, B. Griffin, B. Barney, Adam M. Edstrand, A. I. Young, T. Pluym, Emily Donahue, Robert W. Reger
{"title":"Near-Zero Power Mechanical Shock-Resistant Inertial Wakeup System with Scaled Inputs","authors":"Sean Yen, B. Griffin, B. Barney, Adam M. Edstrand, A. I. Young, T. Pluym, Emily Donahue, Robert W. Reger","doi":"10.1109/INERTIAL48129.2020.9090064","DOIUrl":"https://doi.org/10.1109/INERTIAL48129.2020.9090064","url":null,"abstract":"This paper reports on a near-zero power inertial wakeup sensor system supporting digital weighting of inputs and with protection against false positives due to mechanical shocks. This improves upon existing work by combining the selectivity and sensitivity (Q-amplification) of resonant MEMS sensors with the flexibility of digital signal processing while consuming below 10 nW. The target application is unattended sensors for perimeter sensing and machinery health monitoring where extended battery life afforded by the low power consumption eliminates the need for power cables. For machinery health monitoring, the signals of interest are stationary but may contain spurious mechanical shocks.","PeriodicalId":244190,"journal":{"name":"2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122113989","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}
Peng Wang, Yi Xu, Guoxiong Song, Qingsong Li, Yulie Wu, Xuezhong Wu, D. Xiao
{"title":"Calibration and Compensation of The Misalignment Angle Errors For The Disk Resonator Gyroscopes","authors":"Peng Wang, Yi Xu, Guoxiong Song, Qingsong Li, Yulie Wu, Xuezhong Wu, D. Xiao","doi":"10.1109/INERTIAL48129.2020.9090094","DOIUrl":"https://doi.org/10.1109/INERTIAL48129.2020.9090094","url":null,"abstract":"This paper reports a new method of calibration and compensation for the misalignment angle between the pickoff axis and the forcing directions of the disk resonator gyroscopes. With this error eliminated, the driving control loop will be free of the disturbance from the couple of the angular velocity. Meanwhile, the scale factor nonlinearity could be obviously improved from approximate 140ppm to less than 14 ppm. This method could be applied to other gyroscopes with the same structure like disk resonator gyroscopes.(Abstract)","PeriodicalId":244190,"journal":{"name":"2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133903192","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}
L. G. Pagani, L. Guerinoni, L. Falorni, G. Gattere, Giovanni Mogavero, A. Ghisi, G. Langfelder
{"title":"Chipping and wearing in MEMS inertial sensors: effects on stability and predictive analysis through test structures","authors":"L. G. Pagani, L. Guerinoni, L. Falorni, G. Gattere, Giovanni Mogavero, A. Ghisi, G. Langfelder","doi":"10.1109/INERTIAL48129.2020.9090056","DOIUrl":"https://doi.org/10.1109/INERTIAL48129.2020.9090056","url":null,"abstract":"Impacts between fixed and moving parts in capacitive MEMS inertial sensors can generate debris and wear that undermine the device stability. This work investigates the effects of impacts and friction between rotors and stoppers through dedicated test structures. After modeling the scenario, considering the impact kinetic energy and the tensile/ compressive nominal strength of silicon, different stopper topologies and collision angles are studied. Results show how impact kinetic energies, up to 40 nJ (velocities in the 1-3 m/s range for typical inertial sensor masses), correlate with silicon rupture and provide first guidelines for robust sensors design.","PeriodicalId":244190,"journal":{"name":"2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"220 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115064067","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}
K. Rao, Huafeng Liu, Xiaoli Wei, Wenjie Wu, Chenyuan Hu, J. Fan, Jinquan Liu, L. Tu
{"title":"A High-resolution Area-change-based Capacitive MEMS Accelerometer for Tilt Sensing","authors":"K. Rao, Huafeng Liu, Xiaoli Wei, Wenjie Wu, Chenyuan Hu, J. Fan, Jinquan Liu, L. Tu","doi":"10.1109/INERTIAL48129.2020.9090016","DOIUrl":"https://doi.org/10.1109/INERTIAL48129.2020.9090016","url":null,"abstract":"This paper reports a newly developed chip-level micro-electromechanical system (MEMS) accelerometer for tilt sensing based on differential array area-change capacitive displacement transducer and through-silicon-wafer etching process. The proposed MEMS accelerometer consists of a silicon-based acceleration-sensitive spring-mass structure, a upper glass cover plate and an universal capacitive readout application specific integrated circuit (ASIC) die, which is used to apply differential driving signals and pickup capacitance change due to area-variation under in-plane motion. The MEMS accelerometer has a linear measurement range of ±30° with a scale factor of 33.6 mV/°. The tilt measurement resolution of the MEMS accelerometer is evaluated by the modified Allan deviation with the results showing that an angle resolution of 0.003° at an integral time of 3 seconds. Compared with the commercial MEMS tilt sensors, the proposed MEMS accelerometer in this work has a larger full measurement range and a larger bandwidth but a little bit poor linearity. Hence, it is believed that the proposed chip-level MEMS accelerometer is promising to be a high-resolution tilt sensor with a lower power consumption and smaller volume.","PeriodicalId":244190,"journal":{"name":"2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115432993","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":"Quality Factor Trimming Method Using Thermoelastic Dissipation for Ring-Shape MEMS Resonator","authors":"Abdelli Hamza, T. Tsukamoto, Shuji Tanaka","doi":"10.1109/INERTIAL48129.2020.9090082","DOIUrl":"https://doi.org/10.1109/INERTIAL48129.2020.9090082","url":null,"abstract":"We report a new method to control the quality factor (Q-factor) mismatch in a MEMS disk resonator using the effect of thermoelastic dissipation (TED). The heat conduction path was trimmed to control the thermal time constant, eventually Qfactor determined by TED. The heat conduction beams with small mechanical stiffness were placed in between large temperature difference areas. The Q-factors of two orthogonal modes could be independently controlled with little effect on the resonance frequency. By the proposed method, Q-factor could be trimmed as high as 38%, while the frequency change was only 0.5%.","PeriodicalId":244190,"journal":{"name":"2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"405 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132540408","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":"A MIMU/GNSS/Magnetometer/Polarized Light Integrated Compass Algorithm","authors":"Xiaofeng He, Ruiguang He, Chen Fan, Lilian Zhang, Hang Shang, Mingyao Yuan","doi":"10.1109/INERTIAL48129.2020.9090009","DOIUrl":"https://doi.org/10.1109/INERTIAL48129.2020.9090009","url":null,"abstract":"This paper presents an improved algorithm for MIMU/GNSS/Magnetometer/Polarized light integrated north finding for micro-unmanned vehicles. The magnetometer is a cheap and widely used navigation equipment to find north. Sky polarized light from the sun in the daytime has the special characteristic to determinate the relative range vector from the user to the sun. Then the heading angle of the observatory can be calculated if the positioning of the sun is given. The proposed algorithm adopts the polarized light and magnetometer to obtain the heading angle to improve the observability of the classical MIMU/GNSS integrated navigation. Kalman filter is used to integrate the MIMU, GNSS position, velocity and the heading angle. Some land vehicle field experiments were carried out to demonstrate the feasibility of the algorithm in this paper. The accuracy of yaw angle is better than 1°.","PeriodicalId":244190,"journal":{"name":"2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130976701","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}
Y. Korkishko, V. Fedorov, V. Prilutskiy, V. Ponomarev, S. Prilutskiy, D. Obuhovich, I. Fedorov, A. Zuev, V. Varnakov, S. Kostritskii, I. Morev
{"title":"Ultra-compact navigation-grade Inertial Measurement Unit IMU400","authors":"Y. Korkishko, V. Fedorov, V. Prilutskiy, V. Ponomarev, S. Prilutskiy, D. Obuhovich, I. Fedorov, A. Zuev, V. Varnakov, S. Kostritskii, I. Morev","doi":"10.1109/INERTIAL48129.2020.9090072","DOIUrl":"https://doi.org/10.1109/INERTIAL48129.2020.9090072","url":null,"abstract":"At present time interferometric fiber-optic gyroscopes (IFOG, FOG) are widely used in inertial navigation systems (INS), and in wide range of applications have replaced its well-established main competitor ring laser gyroscopes (RLG). Recently, in order to cover the mass-market applications spectrum requiring low-cost and compact inertial sensor yet as much precise as it can be, RPC Optolink has launched new IFOG-based product: ultra-compact navigation-grade inertial measurement unit IMU400, its SWaP properties are: 80×95×62 mm, 0.7 kg, 0.5 l, ≤7 W. The aim of the current work was the production of pilot IMU400 devices batch and the estimation of the performance of IMU with direct approach and also with strapdown inertial navigation systems (SINS) simulation methods, which by sense is indirect way of performance observation. Main IMU400 Gyro and Accelerometer parameters are: Angle Random Walk (ARW) = 0.007 °/√hour, Bias Instability (BI) = 0.01°/h; Velocity Random Walk (VRW) = 40µg/√Hz, BI = 6µg. SINS expected performance (max): heading 0.2°×sec(lat) (1σ, 10 min align time).","PeriodicalId":244190,"journal":{"name":"2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128134671","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}