Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 128 for “"Tracking Performance"”.
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Teleoperator tracking performance in six degrees of freedom
Thesis (Mech. E.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1990.
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The Effect of Crosswind and Turbulence in Mental Workload and Pilot Tracking Performance
… and turbulence on mental workload and pilot tracking performance. Based on previous research, it was believed that as the amount of crosswind and turbulence is increased, mental workload would increase and tracking performance would decrease. The objective was to estimate the impact that …
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The effects of force level and force direction on force discrimination and isometric tracking performance
An isometric, zero-order, two-dimensional pursuit tracking task utilizing a tracking path that incorporated both linear and circular segments was used to examine the effects of variation in force magnitude, force direction, and direction of target movement upon tracking performance. A contralateral …
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Analysis of the altitude tracking performance of aircraft-autopilot systems in the presence of atmospheric disturbances
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Effects of seated posture on static strength, lower-body isometric muscle contractions, and manual tracking performance
… effects of seat back angle and armrest angle on performance of the following variables: (1) static force generation capabilities on an isometric force-stick; (2) lower-body isometric muscle contractions used in anti-gravity straining maneuvers (AGSMs); and (3) tracking performance for a manual …
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Investigating the Effects of a Task-Specific Fatigue Protocol on Hand Tracking Performance Using a Wrist Robotic Device
… and forearm/hand anthropometrics on hand tracking performance. Participants traced a 2:3 Lissajous curve using a haptic wrist robotic device (WristBot). This same curve was traced before the fatigue (baseline), during the fatigue protocol, and after the fatigue protocol. Post fatigue …
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Precision Motion Control of Electrohydraulic Actuators
… from the linear periodic models provide improved tracking performance for the reference trajectories. The appropriate use of variable sampling interval further improves the tracking performance.
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Incorporating thruster dynamics in the control of an underwater vehicle
… and comparison is based on observed vehicle tracking performance. The incorporation of thruster dynamics is shown to significantly improve vehicle tracking performance. Superior, robust tracking performance with significant model uncertainty is demonstrated in the application of the adaptive …
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Integrated perception, modeling, and control paradigm for bistatic sonar tracking by autonomous underwater vehicles
… the AUVs/receivers to enhance the bistatic sonar tracking performance. Firstly, the surveillance procedure, called the Automated Perception, is developed to automatically abstract the sensed acoustical data from the passive receiver to the track report that represents the situation awareness. The …
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Design synthesis of NLMPC-based tracking controller for autonomous vehicles with active aerodynamic control
… decades have witnessed extensive studies on tracking-control for autonomous vehicles (AVs). However, there is a lack of studies on effective design methods in this field. To tackle this problem, this thesis proposes a design synthesis method which is featured a design framework with two …
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Control of Multiple Degree of Freedom Fast Tool Stages for Noncircular Turning Process
… stage actuator system and it demonstrates the tracking performance improvement through a dual stage actuator system. The dual stage actuator system has a piezoelectric actuator inside of the hollow piston of an electrohydraulic actuator system, so it has another degree of freedom in addition to …
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Variations in Control and Display Gain in a First Control Order Compensatory Manual Tracking Task
… of these two variables to the manual tracking performance of any HO conducting a compensatory tracking task while using a first control-order tracking system. Since the optimal level of control gain required for maximal manual control of a tracking device is system dependent, it may be …
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Development of Adaptive Tracking Methods with Enhanced Performance Based on Deep Learning
Adaptive object tracking aspires to locate the target incessantly in each frame with designated initial target location, which is an imperative yet demanding task in computer vision. Recent adaptive approaches strive to fuse global information of template and search region for achieving promising …
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Resource-Aware Distributed Particle Filtering for Cluster-Based Object Tracking in Wireless Camera Networks
… we consider the problem of real-time object tracking with a WCN. Existing object tracking methods designed for multi-camera systems do not take into account the unique constraints of WCNs. Specifically, an effective object tracking system for WCNs must anticipate unreliable network …
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Advances in the Use of Finite-Set Statistics for Multitarget Tracking
… statistics (FISST) approach to multitarget tracking. We consider a subsea multitarget tracking application that poses several challenges due to factors, such as, clutter/environmental noise, joint target and sensor state dependent measurement uncertainty, target-measurement association …
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Required force level and isometric tracking
… zero-order (position), one dimensional pursuit tracking task was used to investigated the effects of alterations in the speed of target movement and the control/response ratio (C/R ratio) on human tracking performance. The speed of target movement was varied through different frequency sine-wave …
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Characteristics of muscle co-contraction during isometric tracking
… relationship between muscle coordination and the performance of a simple manual tracking task. The study employed an isometric, zero order, pursuit tracking task with a laterally translating, periodic sine wave forcing function. The speed of the target was varied by altering the Frequency (3 …
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Energy-Efficient Tracking in Sensor Networks
We consider the problem of tracking one or more objects in an energy-efficient manner using a sensor network. The sensors in this network can enter an asleep mode where they conserve energy but are unable to help track the objects. We consider two assumptions for how the sleeping actions of the …
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Adaptive Control Allocation for Unmanned Aerial Vehicles with Model Uncertainties
… effector degradation carry risks to weaken the performance of any aerial system and endanger operation during flight. To this end, over-actuated aerial systems are used in flight operations to take precautions for possible incidents, which may result in improper control or a fall of the aerial …
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