Four-Wheel Steering Control for Mining X-by-Wire Chassis Based on AUKF State Estimation
World Electric Vehicle JournalTo address the challenges to driving stability caused by large-curvature steering of wire-controlled mining vehicles in narrow tunnels, a fused four-wheel steering (4WS) control strategy based on real-time estimation of vehicle state parameters is ...
Qiang Ji +4 more
doaj +1 more source
Low-speed wind tunnel investigation of the lateral-directional characterisitcs of a large-scale variable wing-sweep fighter model in the high-lift configuration [PDF]
The low-speed characteristics of a large-scale model of the F-14A aircraft were studied in tests conducted in the Ames Research Center 40- by 80-Foot Wind Tunnel.
Eckert, W. T., Maki, R. L.
core +1 more source
B-52 stability augmentation system reliability [PDF]
The B-52 SAS (Stability Augmentation System) was developed and retrofitted to nearly 300 aircraft. It actively controls B-52 structural bending, provides improved yaw and pitch damping through sensors and electronic control channels, and puts complete ...
Bowling, T. C., Key, L. W.
core +1 more source
Optimal Reconfiguration Control of the Yaw Stability of the Tractor‐Semitrailer Vehicle [PDF]
Mathematical Problems in Engineering, 2012 An optimal reconfiguration control scheme based on control allocation (CA) is proposed to stabilize the yaw dynamics of the tractor‐semitrailer vehicle. The proposed control scheme is a two‐level structure consisting of an upper level of sliding mode yaw moment controller (SMYC) and a lower optimal brake force distributor (BFD).
openaire +2 more sources
Development of a sensitivity analysis technique for multiloop flight control systems [PDF]
This report presents the development and application of a sensitivity analysis technique for multiloop flight control systems. This analysis yields very useful information on the sensitivity of the relative-stability criteria of the control system, with ...
Downing, D. R. +2 more
core +1 more source
Meitan xuebaoDue to the use of lumbar folding steering for heavy-duty articulated vehicles in coal mines, the lateral stiffness is weak and the disturbance factors are complex, making it more difficult to operate and easily causing safety problems.
Zhiyong REN +4 more
doaj +1 more source
Applied SciencesAiming at the nonlinear low-speed-jitter (LSJ) vibration suppression for a yaw system of a megawatt wind turbine, a kinematics mechanism of the yaw system is investigated from the perspective of tribology, and a kinematics model of the yaw system based ...
Tingrui Liu, Zhifeng Nie
doaj +1 more source
A new momentum management controller for the space station [PDF]
A new approach to CMG (control moment gyro) momentum management and attitude control of the Space Station is developed. The control algorithm utilizes both the gravity-gradient and gyroscopic torques to seek torque equilibrium attitude in the presence of
Byun, K. W., Warren, V. W., Wie, B.
core +1 more source
Unsteady aerodynamic analysis of space shuttle vehicles. Part 4: Effect of control deflections on orbiter unsteady aerodynamics [PDF]
The unsteady aerodynamics of the 040A orbiter have been explored experimentally. The results substantiate earlier predictions of the unsteady flow boundaries for a 60 deg swept delta wing at zero yaw and with no controls deflected.
Ericsson, L. E., Reding, J. P.
core +1 more source
Nose gear steering system for vehicle with main skids Patent [PDF]
, 1965 Nose gear steering system for vehicles with main skids to provide directional stability after loss of aerodynamic ...
Joyner, U. T.
core +1 more source