2017 DGON Inertial Sensors and Systems (ISS)最新文献

{"title":"Thermo-mechanical simulation of die-level packaged 3-axis MEMS gyroscope performance","authors":"A. Parent, C. Welham, T. Piirainen, A. Blomqvist","doi":"10.1109/INERTIALSENSORS.2017.8171502","DOIUrl":"https://doi.org/10.1109/INERTIALSENSORS.2017.8171502","url":null,"abstract":"In this paper we present accurate thermo-mechanical simulations of a MEMS gyroscope sensor, with its die-level package. The models, simulation tools, methodology and results are presented. The resonance frequency shifts of the modes of interest (drive and 3 sense modes) and the shift in sense capacitances are simulated and compared to experimental results. Simulations compare well with the results.","PeriodicalId":402172,"journal":{"name":"2017 DGON Inertial Sensors and Systems (ISS)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126390300","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":"To the production of a robust and highly accurate MEMS vibrating accelerometer","authors":"O. Lefort, I. Thomas, Š. Jaud","doi":"10.1109/INERTIALSENSORS.2017.8171494","DOIUrl":"https://doi.org/10.1109/INERTIALSENSORS.2017.8171494","url":null,"abstract":"This paper presents Thales main results for the maturity development activities of TopAxyz MEMS Vibrating Beam Accelerometer (VBA) using a differential resonator architecture implemented on a planar SOI silicon layer. Proof of concept with Navigation grade performances level has already been presented at ISS2012. Development focused on two major challenges: to reach a high production yield and to demonstrate a high reliability level. It was mandatory to demonstrate these two topics to have a product with high maturity level at the product launch. In this paper we present the major design choices on MEMS, electronics architecture and packaging to reach yield and reliability. Product performances are detailed with highlights on navigation grade key characteristics which are bias and scale factor temperature stability, vibration susceptibility, warm-up response and random walk. Product reliability demonstration activities are also presented with examples on characterization of ESD and thermal cycles susceptibility. Evaluation of product long term bias and scale factor stability after 9 years storage associated to accelerated ageing are used to secure device lifetime. The VBA concept allows Thales to offer digital navigation grade MEMS accelerometer with demonstrated outstanding performances, cumulating very high input range (up to 100 g), below 50 Mg bias accuracy and less than 10 ppm scale factor accuracy. Thales MEMS accelerometer, compatible with the highest certified aerospace applications under DO-254 standards, now complements the current TopAxyz product line covering all applications in aerospace, land and naval domains.","PeriodicalId":402172,"journal":{"name":"2017 DGON Inertial Sensors and Systems (ISS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115845672","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":"Navigation informativity of geophysical fields in map-aided navigation","authors":"Oleg A. Stepanov, A. Nosov, A. Toropov","doi":"10.1109/INERTIALSENSORS.2017.8171509","DOIUrl":"https://doi.org/10.1109/INERTIALSENSORS.2017.8171509","url":null,"abstract":"This paper deals with an analysis of the fields used in map-aided navigation. The variability of these fields plays the key role in the performance of map-aiding, thus the choice of an “appropriate” area of the field is prerequisite to accurate navigation. This choice can be made relying on a quantitative characteristic that determines the efficiency of using a geophysical field for navigation. We discuss known characteristics and observe the relationship between them. Furthermore, a technique for selecting appropriate areas is presented.","PeriodicalId":402172,"journal":{"name":"2017 DGON Inertial Sensors and Systems (ISS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126512132","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":"FOG based INS for satellite launcher application","authors":"D. Grifi, R. Senatore, E. Quatraro, M. Verola, A. Pizzarulli","doi":"10.1109/INERTIALSENSORS.2017.8171492","DOIUrl":"https://doi.org/10.1109/INERTIALSENSORS.2017.8171492","url":null,"abstract":"Spatial missions begin with orbit immission of a satellite in parking orbit by means of a satellite launcher. Civitanavi Systems developed an Inertial Navigation Systems (INS), based on proprietary FOG (Fiber Optic Gyro) technology, for stabilization and navigation of a satellite launcher during its mission. Rather than adopting the NED (North East Down) reference frame and a 3-2-1 Euler angles, which are mostly used in atmospheric flights for attitude determination, the LPI (Launch-Point-Inertial) reference frame is preferred in space flights (satellite carrier rockets) with 2-3-1 Euler angles orientation representation; hence different inertial navigation equations are derived for this special application. Main characteristics required for a satellite launcher INS are its capability to withstand harsh operating environment in terms of mechanical vibrations and shocks. Lateral booster detachment by means of propellant (explosive charges) induces a 10000g pyroshock on the INS unit exciting frequencies up to 5000 Hz. Special requirements are derived in terms of mechanical design and FOG control law enhancement in order to stabilize closed-loop FOG during high angular acceleration phase (shock) and to reject spurious dynamic measurements. Finally some experimental results on achieved accuracy are presented.","PeriodicalId":402172,"journal":{"name":"2017 DGON Inertial Sensors and Systems (ISS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129447507","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":"Next generation optical fibers for small diameter fiber optic gyroscope (FOG) coils","authors":"A. Gillooly, M. Hill, T. Read, P. Maton","doi":"10.1109/INERTIALSENSORS.2017.8171488","DOIUrl":"https://doi.org/10.1109/INERTIALSENSORS.2017.8171488","url":null,"abstract":"To drive higher performance and smaller sized fiber optic gyroscope (FOG) coils smaller diameter optical fibers are required to allow more fiber to be used within these coils and/or to reduce the coil diameter. The reduction in fiber size and increase in FOG coil layers reduces the polarization extinction ratio (PER) capabilities of the optical fiber. To address this a new FOG polarization maintaining (PM) fiber has been developed with a lower stress coating package which offers enhanced microbend isolation and improved Bow Tie shapes for optimized glass performance resulting in a boost of 5dB or more in the PER performance of small diameter coils designed for size constrained IMUs with drift performance over environmental conditions of <<1.0 deg/hr with significantly larger than 300 meters of fiber length.","PeriodicalId":402172,"journal":{"name":"2017 DGON Inertial Sensors and Systems (ISS)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126497100","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":"First steps for a Giant FOG: Searching for the limits","authors":"E. de Toldi, H. Lefèvre, F. Guattari, A. Bigueur, Adrien Steib, D. Ponceau, C. Moluçon, E. Ducloux, J. Wassermann, U. Schreiber","doi":"10.1109/INERTIALSENSORS.2017.8171491","DOIUrl":"https://doi.org/10.1109/INERTIALSENSORS.2017.8171491","url":null,"abstract":"Based on recent experiences developing very low noise fiber-optic gyroscopes (FOG), as presented at ISS-2016, first performance results on very large optical fiber coils of up to 1 m diameter are presented. The goal for constructing large FOGs is to evaluate experimentally the physical limits of this kind of technology and to reach the lowest possible noise. While these experiments are probing the fundamental limits of FOG technology, they also serves as a first step for a cost effective very low noise laboratory rotational seismometer and will contribute in a second step to performance improvements on the portable rotational seismometer ‘blueSeis-3A&B’. This goal has several difficulties: the first one is the winding of the coil, the second concerns the mechanical substrate, and the third is, as usual, related to the measurement. To our knowledge, a winding machine, large enough to wind a 1 meter-diameter coil, does not exist, but thanks to iXblue expertise in the manufacturing of winding machines and calibration tables, a hydride system has been designed, merging these two technologies to fulfill the requirement of winding a large coil on an adequate rotational platform. The characterization of the wobble of the system is presented, since this is a critical parameter for the winding and ultimately the performance. To decrease the sensor sensitivity to environmental noises, unrelated to real ground rotation, is a critical process to achieve the highest attainable measurement sensitivity in seismology. The mechanical substrate of the coil is critical, as it must handle thermal, acoustic, magnetic, and electromagnetic isolation. To demonstrate a very low self-noise, the ideal way is to find an experiment place near a much more precise instrument in a calm enough location. The seismic station collocated to ROMY tetrahedral ring-laser gyroscope [0] is the ideal place to do that. Results of different prototypes during the development process are presented to underline the applicability of each technological response to the Large-FOG requirements. Finally we conclude with presentation of the achieved results with a 1 meter-diameter FOG having a fiber length of 5000 meters.","PeriodicalId":402172,"journal":{"name":"2017 DGON Inertial Sensors and Systems (ISS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130146224","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":"MEMS based navigation and control of a nonlinear quadrotor with tiltable rotors","authors":"G. Scholz, K. Müller, G. Trommer","doi":"10.1109/INERTIALSENSORS.2017.8171507","DOIUrl":"https://doi.org/10.1109/INERTIALSENSORS.2017.8171507","url":null,"abstract":"The support of rescue forces using Micro Aerial Vehicles (MAVs) is a challenging task which is addressed in this work. In order to fulfill this task an advanced type of MAV is being developed: A quadrotor with tiltable rotors. This vehicle is able to perform vertical takeoff and landing maneuvers as well as to control attitude and velocity independently. To achieve this goal the navigation filter fuses the information of a micro electrical mechanical system inertial measurement unit (MEMS IMU) with data provided by a laser range finder. A stochastic cloning Kalman filter is used to perform the data fusion appropriately. To control this new kind of vehicle a nonlinear controller is used. The controller is separated into a common backstepping controller and a control allocation unit. The performance of the system is demonstrated by simulations based on model identification of real sensors and hardware.","PeriodicalId":402172,"journal":{"name":"2017 DGON Inertial Sensors and Systems (ISS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116834298","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":"Tightly coupled fusion of direct stereo visual odometry and inertial sensor measurements using an iterated information filter","authors":"M. Schwaab, D. Plaia, Daniel Gaida, Y. Manoli","doi":"10.1109/INERTIALSENSORS.2017.8171505","DOIUrl":"https://doi.org/10.1109/INERTIALSENSORS.2017.8171505","url":null,"abstract":"In this paper we describe a recursive filter for the fusion of inertial and visual measurements for self-positioning, where the sensors are attached rigidly to the moving person or object. The system is self-contained, requires no infrastructure and is suitable for both indoor and seamless indoor/outdoor localization. The suggested approach fuses the images acquired by a stereo camera with a 3-axis MEMS accelerometer and gyroscope. We focus on a visual odometry approach in which motion information is calculated from subsequent (stereo) images. The algorithm uses image gradients to determine Jacobian Matrices in an iterated information filter formulation. Therefore after the strapdown inertial navigation (INS) in the prediction step, the correction based on a semi-dense direct image alignment considers properly the state uncertainty and in general only one or two iterations are required for convergence. The accuracy and the robustness of the combined localization system are evaluated using the EuRoCMAV dataset as well as a walking scenario recorded by a custom sensor setup.","PeriodicalId":402172,"journal":{"name":"2017 DGON Inertial Sensors and Systems (ISS)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134416157","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 model building method of single-axis interferometric FOG based on thermally induced nonreciprocal error","authors":"W. Gao, P. Wu, Y. Zhang, R. Zhang, B. Zhao","doi":"10.1109/INERTIALSENSORS.2017.8171489","DOIUrl":"https://doi.org/10.1109/INERTIALSENSORS.2017.8171489","url":null,"abstract":"Thermal analysis for the single-axis fiber optic gyroscope is carried out, and the influence of the fiber-loop temperature field on gyro output is researched. In this paper, Fiber optic gyroscope model and fiber loop model are established and validated, then the temperature field of the gyroscope and fiber loop are simulated and analyzed. By comparing temperature nephograms of the fiber loop and the temperature of the fiber loop section central node, the temperature transmission rate inside the fiber loop is analyzed. Extract the boundaries' temperature of fiber loop and program based on the theory of thermally induced nonreciprocal error. After obtaining the nonreciprocal error caused by temperature, we can compensate the error by the algorithm through subtracting the error from the gyro output value. In this paper, an accuracy verifying method of finite-element simulation model is presented, and an example of finite element analysis for thermal field is given. The thermally induced nonreciprocal error analysis is given considering temperature gradient and thermal stress.","PeriodicalId":402172,"journal":{"name":"2017 DGON Inertial Sensors and Systems (ISS)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130533108","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":"Miniature high-performance Quartz accelerometer for High-Dynamic, precision guided systems","authors":"J. Beitia","doi":"10.1109/INERTIALSENSORS.2017.8171493","DOIUrl":"https://doi.org/10.1109/INERTIALSENSORS.2017.8171493","url":null,"abstract":"In 2015, InnaLabs reported on the development of a range of specialist, precision Quartz Pendulous Accelerometers. The performance requirement for these accelerometers was a key design driver for meeting the market needs within the tactical and the navigation grade market segments. In order to extend InnaLabs offering to cutting edge, volume applications with more stringent and highly dynamic environments such as High-Dynamic Precision Guided Systems, InnaLabs has recently released its new miniature low-cost precision Quartz Pendulous Accelerometer, the AI-Q-550. This paper shows the key features and budgets delivered by this 80g-MEMS-size accelerometer. It describes the design, construction and operating principles, with a special emphasis on the physical properties leading to extremely low warm-up, low bias vibration rectification (VRE), and bias and scale factor temperature stabilities of 100μg and 100ppm, respectively.","PeriodicalId":402172,"journal":{"name":"2017 DGON Inertial Sensors and Systems (ISS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117136270","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}