Xem 1-12 trên 12 kết quả Vehicle stability
  • As already stated, a road vehicle on pneumatic tires cannot maintain a given trajectory under the effect of external perturbations unless managed by some control device, which is usually a human driver. Its stability solely involves such state variables as the sideslip angle β and the yaw velocity r. In the case of two-wheeled vehicles the capsize motion is intrinsically unstable forcing the driver not only to control the trajectory but stabilize the vehicle. A possible scheme of the vehicle-driver system is shown in Fig. 27.1.

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  • The models seen in the previous chapters dealt with vehicles that maintain their symmetry plane more or less perpendicular to the ground; i.e. they move with a roll angle that is usually small. Moreover, the pitch angle was also assumed to be small, with the z axis remaining close to perpendicular to the ground. Since pitch and roll angles are small, stability in the small can be studied by linearizing the equations of motion in a position where θ = φ = 0. Two-wheeled vehicles are an important exception. Their roll angle is defined by equilibrium considerations and, particularly at...

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  • During the last twenty years since the first commercialization of lithium ion batteries (LIBs), there has been ever continuing improvements in their performance, such as specific charge/ discharge capacity, cycle stability, and safety, according to the practical demands from various end-uses.

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  • Some pension funds and other institutional investors have already expressed their interest in - or indeed already are - investing in climate change related assets. Consequently, various industry groups have been formed in order to increase industry expertise in this area and to engage in a dialogue with governments to explain the sort of investment environment and financing vehicles which are necessary to support their greater engagement. They are also exploring how to pool resources in order to achieve the scale which investment in some of these projects requires. ...

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  • FRONT SUSPENSION • STRUCTURAL VIEW 4x2 TENSION ROD UPPER ARM STABILIZER LOWER ARM TORSION BAR APRING 4x4 SHOCK ABSORBER TORSION BAR SPRING STABILIZER UPPER ARM SHOCK ABSORBER LOWER ARM REAR SUSPENSION • STRUCTURAL VIEW 4X4 SHOCK ABSORBER LEAF SPRING 4X4 HEIGHT ADJUSTMENT • FRONT ONLY VEHICLE HEIGHT 4x2 4x4 ANCHOR BOLT FRONT WHEEL ALIGNMENT • CAMBER AND CASTER SHIM FOR CAMBER ADJUSTMENT SHIM FOR CASTER ADJUSTMENT FRONT SHIM WHEEL ALIGNMENT • MAXIMUM STEERING ANGLE 4x2 4x4 4 4 ADJUSTING BOLT ...

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  • Design Practice in Japan 65.1 Design Design Philosophy • Load • Theory • Stability Check • Fabrication and Erection 65 65.2 65.3 65.4 65.5 65.6 65.7 Stone Bridges Timber Bridges Steel Bridges Concrete Bridges Hybrid Bridges Long-Span Bridges (Honshu–Shikoku Bridge Project) Kobe–Naruto Route • Kojima–Sakaide Route • Onomichi–Imabari Route 65.

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  • Long-Term Expression in Genetic Disease: In Vivo Gene Transfer with Recombinant Adeno-Associated Viral (AAV) Vectors Recombinant AAV vectors have emerged as attractive gene delivery vehicles for genetic disease. Engineered from a small replication-defective DNA virus, they are devoid of viral coding sequences and trigger very little immune response in experimental animals. They are capable of transducing nondividing target cells, and the donated DNA is stabilized primarily in an episomal form, thus minimizing risks associated with insertional mutagenesis.

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  • Using a more control-oriented terminology, the point-to-point motion task is a stabilization problem for an (equilibrium) point in the robot state space. For a car-like robot, two control inputs are available for adjusting four con guration variables, namely the two cartesian coordinates characterizing the position of a reference point on the vehicle, its orientation, and the steering wheels angle. More in general, for a car-like robot towing N trailers, we have two inputs for recon guring n = 4+N states.

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  • The taxanes include paclitaxel and docetaxel. These agents differ from the vinca alkaloids in that the taxanes stabilize microtubules against depolymerization. The "stabilized" microtubules function abnormally and are not able to undergo the normal dynamic changes of microtubule structure and function necessary for cell cycle completion. Taxanes are among the most broadly active antineoplastic agents for use in solid tumors, with evidence of activity in ovarian cancer, breast cancer, Kaposi's sarcoma, and lung tumors.

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  • There are 4 million miles of roads in the United States. One hundred years ago, roads were primarily unpaved and had half the number of miles of the present U.S. road system. As the system grew, roads became wider and more complex structurally to provide for more and heavier traffic. New construction technology and greater structural stability were needed to improve the road system. All phases of road development—from construction and use by vehicles to maintenance—affect physical and chemical soil conditions, water flow, and air and water quality.

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  • The United States, however, cannot be a regulatory island among competing nations of the world. In an international marketplace of multinational corporations, instant transfers of wealth, lightning fast communications, and globalized trading systems for equities and securities, if U.S. regulations are anomalous or significantly more “burdensome” than those in other industrialized nations, business and transactions could migrate toward other markets. Hence, many have emphasized the need to coordinate regulatory changes among nations.

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  • The agency has also proposed establishing a new safety standard (FMVSS No. 126) to require electronic stability control (ESC) on all light duty passenger vehicles beginning in MY 2009. 8 ESC can prevent a large percentage of loss-of-control crashes which expose vehicles to the off- road tripping mechanisms that cause most rollovers. By reducing exposure to run-off-the-road crashes, an ESC requirement would result in a large reduction in rollover fatalities.

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