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 116 for “"off-road"”.
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Lateral tyre forces on off-road surfaces
A successful model for off-road tyres must be reliable, efficient and capable of reproducing and predicting the main system phenomena. Mathematical models are proposed for longitudinal, lateral and combined lateral and longitudinal force generation characteristics of off-road tyres. For a better …
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Performance of wireless off-road vehicular networks
… communication are generating more interest in off-road vehicular networks than ever before. Current on-road and off-road vehicular networking technologies are either cost prohibitive, bandwidth limited, or exhibit too much latency. 802.11 standard networks are a low-cost, readily available …
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Torque control strategy for off-road vehicle mobility.
Multi-wheeled off-road vehicles behavior depend not only on the total provided power by the engine but also on the power distribution among the drive axles/wheels. In turn, this distribution is primarily regulated by the drivetrain layout and the torque distribution devices. At the output of the …
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Modeling and analysis of off-road tire cornering characteristics
… of the cornering characteristics under a broad range of operating conditions and soils.
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Analysis of Fuel Cell Systems for Off-Road Agricultural Vehicles
L'abstract è presente nell'allegato / the abstract is in the attachment
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Autonomous Machine Vision for Off -Road Vehicles in Unstructured Fields
This research proved the feasibility of the machine vision applications in the three targeted problems, and has shown that machine vision is capable of navigating agricultural vehicles in open field environments.
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Autonomous machine vision for off-road vehicles in unstructured fields
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2009-11-23T22:49:28Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Wang_Qi.pdf: 4053834 bytes, checksum: 1815ebd53b3114955aa9e716b10fba3e (MD5) Wang_Qi.doc: 7308288 bytes, checksum: …
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Stochastic Terrain and Soil Modeling for Off-Road Mobility Studies
… realistic predictions of vehicle performance in off-road conditions, it is critical to incorporate in the simulation accurate representations of the variability of the terrain profile. It is not practically feasible to measure the terrain at a sufficiently large number of points, or, if measured, …
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Development of a Multiprocessor Data Telemetry System for Off-Road Vehicles
… been completed on increasing the efficiency of off-road vehicles through both equipment improvements and operator techniques. The purpose of this project was to design and implement a data telemetry system, specifically for farm tractors, that allowed improvements to be demonstrated to the …
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Predicting Soil Erosion on Off-Road Vehicle Trails in Southwest Missouri
… is one of the few USFS managed areas that allow Off-Road Vechicle (ORV) use on specially designated trails since the 1960s. Soil erosion is a focal area of concern for environmental groups in the area. Methods for predicting soil erosion include the Universal Soil Loss Equation (USLE), Modified …
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Off road vehicle soil suitability analysis within the Kisatchie National Forest
Soil degradation due to improper use of off road vehicle (ORV) is among the major problems in the Kisatchie National Forest (KNF), especially in Catahoula (CRD), Evangeline Unit, Calcasieu (ERD), and Kisatchie Ranger (KRD) districts. The USDA-Forest Service (USFS) maintains designated trails within …
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Adaptive Rollover Control Algorithm Based on an Off-Road Tire Model
… However, not much research has been performed on off-road tire models. This research develops an off-road tire model for the studied vehicle by first using data from rolling road testing to develop a Pacejka Magic Formula tire model and then extending it to off-road surfaces through the use of …
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Finite Element Modeling and Experimental Validation for Off-Road Tire Performance
Off-road vehicles often need to traverse soft soils such as clay or dirt, which can lead to immobilized vehicles. This is particularly important for military and agricultural applications, where reliable performance is crucial for mission success and high crop yields. This project aims to gain a …
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Predictive Control of Electric Motors Drives for Unmanned Off-road Wheeled Vehicles
… has drawn lately more attention, especially for off-road environment. As the demand to use electric vehicles increased, the need to conceptualize the use of electrically driven vehicles in autonomous operations became a target. That is because in addition to the fact that they are more …
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Development of a Low-Cost Navigation System for Autonomous Off -Road Vehicles
To evaluate this low-cost navigation system and associated fusion algorithms, validation tests are performed using an experimental system that is designed to acquire real-time data and to perform data fusion. These tests take place at three test sites that include flat and uneven terrain, with or …
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A lumped-parameter model of tire-terrain interactions for off-road vehicles
The inclusion of various electronic control units in modern vehicles, such as the anti-lock brake systems, the traction control systems, and the electronic stability control have improved vehicle performance and stability. Design and tuning of such control units requires large amounts of trial and …
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Perception and Control Methods for Improving the Autonomy of Off-Road Robots
… robots remain challenging to operate under off-road conditions. The agricultural robot designed as part of the present work, nicknamed RoverII, offers a good case study since it was developed for field-surveying tasks on dairy farms and needs to operate autonomously on uneven terrain and …
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Development of an Off-Road Capable Tire Model for Vehicle Dynamics Simulations
… tire modeling, however, have been limited to on-road tire models. With the availability of powerful computers, it can be noted that majority of the work done in the development of off-road tire models have mostly been focused on creating better Finite Element, Discrete Element, or Boundary …
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Prediction of mobility, handling, and tractive efficiency of wheeled off-road vehicles
… focus on the mobility and tractive efficiency of off-road vehicles. These vehicles are adopted in military, agriculture, construction, exploration, recreation, and mining applications and are intended to operate on soft, deformable terrain. The performance of off-road vehicles is deeply influenced …
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Benchmarking of off-road machinery operations with the use of geo-referenced data
… resources to evaluate the efficiency of their off-road machines and in order for them to do so, relevant data must be collected from those machines. The rise of modern on-board computer systems now allows researchers, farmers and off-road machinery manufacturers to collect data from off-road …
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