Test bed for low-cost measurement of AM/AM and AM/PM effects in RF PAs based on FPGA

Vehicle running state adaptive unscented Kalman filter soft-sensing algorithm is put forward in this paper based on traditional UKF which can estimate vehicle running state parameters and suboptimal Sage-Husa noise estimator which can effectively solve the problem of noises varying with time. Meanwhile 3-DOF dynamic model of vehicle and HSRI tire model are established. So vehicle running state can be accurately estimated by fusing the low-cost measurement information of longitudinal and lateral acceleration and handwheel steering angle. Under the typical working condition, AUKF soft-sensing algorithm is verified with substantial vehicle tests. Comparing with UKF soft-sensing algorithm, the result indicates AUKF soft-sensing algorithm has a good performance in robustness and is able to realize the effective estimation of vehicle running state more precisely than UKF soft-sensing algorithm.

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Low Cost Satellite Attitude Hardware Test Bed

10.18260/p.25582 ◽

2016 ◽

Cited By ~ 1

Author(s):

Austin Probe ◽

Vinicius Guimaraes Goecks ◽

John Hurtado

Keyword(s):

Low Cost ◽

Test Bed ◽

Satellite Attitude ◽

Hardware Test

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Extending QGroundControl for Automated Mission Planning of UAVs

Sensors ◽

10.3390/s18072339 ◽

2018 ◽

Vol 18 (7) ◽

pp. 2339 ◽

Cited By ~ 8

Author(s):

Cristian Ramirez-Atencia ◽

David Camacho

Keyword(s):

Flight Control ◽

Low Cost ◽

Real Life ◽

Mission Planning ◽

Human Computer Interface ◽

Simulation Environment ◽

Test Bed ◽

Multiple Vehicles ◽

Operator Workload ◽

Selection Of

Unmanned Aerial Vehicles (UAVs) have become very popular in the last decade due to some advantages such as strong terrain adaptation, low cost, zero casualties, and so on. One of the most interesting advances in this field is the automation of mission planning (task allocation) and real-time replanning, which are highly useful to increase the autonomy of the vehicle and reduce the operator workload. These automated mission planning and replanning systems require a Human Computer Interface (HCI) that facilitates the visualization and selection of plans that will be executed by the vehicles. In addition, most missions should be assessed before their real-life execution. This paper extends QGroundControl, an open-source simulation environment for flight control of multiple vehicles, by adding a mission designer that permits the operator to build complex missions with tasks and other scenario items; an interface for automated mission planning and replanning, which works as a test bed for different algorithms, and a Decision Support System (DSS) that helps the operator in the selection of the plan. In this work, a complete guide of these systems and some practical use cases are provided

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Feasibility Study of Using Low-Cost Measurement Devices for System Identification Using Bayesian Approaches

Model Validation and Uncertainty Quantification, Volume 3 - Conference Proceedings of the Society for Experimental Mechanics Series ◽

10.1007/978-3-030-47638-0_21 ◽

2020 ◽

pp. 201-208

Author(s):

Alejandro Duarte ◽

Albert R. Ortiz

Keyword(s):

System Identification ◽

Feasibility Study ◽

Low Cost ◽

Bayesian Approaches ◽

Cost Measurement ◽

Measurement Devices

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Construction of a comprehensive endovascular test bed for research and device development in mechanical thrombectomy in stroke

Journal of Neurosurgery ◽

10.3171/2020.1.jns192732 ◽

2020 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Adithya S. Reddy ◽

Yang Liu ◽

Joshua Cockrum ◽

Daniel Gebrezgiabhier ◽

Evan Davis ◽

...

Keyword(s):

Flow Rate ◽

Hydraulic System ◽

Mechanical Thrombectomy ◽

Low Cost ◽

Quality Analysis ◽

Test Bed ◽

Vessel Occlusion ◽

Physiological Flow ◽

3D Printed ◽

Device Interaction

OBJECTIVEThe development of new endovascular technologies and techniques for mechanical thrombectomy in stroke has greatly relied on benchtop simulators. This paper presents an affordable, versatile, and realistic benchtop simulation model for stroke.METHODSA test bed for embolic occlusion of cerebrovascular arteries and mechanical thrombectomy was developed with 3D-printed and commercially available cerebrovascular phantoms, a customized hydraulic system to generate physiological flow rate and pressure, and 2 types of embolus analogs (elastic and fragment-prone) capable of causing embolic occlusions under physiological flow.RESULTSThe test bed was highly versatile and allowed realistic, radiation-free mechanical thrombectomy for stroke due to large-vessel occlusion with rapid exchange of geometries and phantom types. Of the transparent cerebrovascular phantoms tested, the 3D-printed phantom was the easiest to manufacture, the glass model offered the best visibility of the interaction between embolus and thrombectomy device, and the flexible model most accurately mimicked the endovascular system during device navigation. None of the phantoms modeled branches smaller than 1 mm or perforating arteries, and none underwent realistic deformation or luminal collapse from device manipulation or vacuum. The hydraulic system created physiological flow rate and pressure leading to iatrogenic embolization during thrombectomy in all phantoms. Embolus analogs with known fabrication technique, structure, and tensile strength were introduced and consistently occluded the middle cerebral artery bifurcation under physiological flow, and their interaction with the device was accurately visualized.CONCLUSIONSThe test bed presented in this study is a low-cost, comprehensive, realistic, and versatile platform that enabled high-quality analysis of embolus–device interaction in multiple cerebrovascular phantoms and embolus analogs.

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