Closure to “Disussion of ‘A Steering Control System to Minimize Propulsion Losses of High-Speed Containerships—Part II: Controller Design’” (1982, ASME J. Dyn. Syst., Meas., Control, 104, pp. 18–19)

1982 ◽  
Vol 104 (1) ◽  
pp. 19-19
Author(s):  
R. E. Reid ◽  
J. W. Moore
Keyword(s):  
Control System ◽  
High Speed ◽  
Controller Design ◽  
Steering Control

The Robust Control of Magnetic Suspension with Rapidly Changing of Rotor Speed

2009 ◽  
Vol 147-149 ◽  
pp. 302-307 ◽  
Author(s):  
Arkadiusz Mystkowski ◽  
Zdzisław Gosiewski
Keyword(s):  
Control System ◽  
Robust Control ◽  
High Speed ◽  
Controller Design ◽  
Angular Speed ◽  
Magnetic Bearing ◽  
Magnetic Suspension ◽  
Experimental Results ◽  
Active Magnetic Bearing ◽  
Robust Controller

An optimal robust vibration control of a rotor supported magnetically over a wide angular speed range is presented in the paper. The laboratory stand with the high speed rotor (max. 24000 rpm) was designed. The wide bandwidth controller with required gain, which is necessary to stabilize the structurally unstable and active magnetic bearing system was computed. For controller design, the weighting functions putted on the input and output signals were chosen. For control design, the dynamics of the rotor and uncertain parameters were considered. The optimized control system by minimization of the H norm putted on transient process of the system was presented. The robust controller was designed with considered asymmetrically magnetic bearings, signal limits and power amplifiers dynamic. The success of the robust control is demonstrated through computer simulations and experimental results. Matlab-Simulink was used for the numerical simulation. The experimental results show the effectiveness of the control system as good vibrations reducing and robustness of the designed controller in all dynamic states.

Implementation of Trailer Steering Control on a Multi-Unit Vehicle at High Speeds

2013 ◽  
Vol 136 (2) ◽  
Author(s):  
Richard Roebuck ◽  
Andrew Odhams ◽  
Kristoffer Tagesson ◽  
Caizhen Cheng ◽  
David Cebon
Keyword(s):  
Control System ◽  
High Speed ◽  
Tracking Error ◽  
Path Following ◽  
Stability Control ◽  
Substantial Improvement ◽  
Lateral Acceleration ◽  
Steering Control ◽  
Stability Margins ◽  
Stability Control System

A high-speed path-following controller for long combination vehicles (LCVs) was designed and implemented on a test vehicle consisting of a rigid truck towing a dolly and a semitrailer. The vehicle was driven through a 3.5 m wide lane change maneuver at 80 km/h. The axles of the dolly and trailer were steered actively by electrically-controlled hydraulic actuators. Substantial performance benefits were recorded compared with the unsteered vehicle. For the best controller weightings, performance improvements relative to unsteered case were: lateral tracking error 75% reduction, rearward amplification (RA) of lateral acceleration 18% reduction, and RA of yaw rate 37% reduction. This represents a substantial improvement in stability margins. The system was found to work well in conjunction with the braking-based stability control system of the towing vehicle with no negative interaction effects being observed. In all cases, the stability control system and the steering system improved the yaw stability of the combination.

A Steering Control System to Minimize Propulsion Losses of High-Speed Containerships—Part I: System Dynamics

1982 ◽  
Vol 104 (1) ◽  
pp. 1-8 ◽  
Author(s):  
R. E. Reid ◽  
J. W. Moore
Keyword(s):  
Control System ◽  
Modeling And Simulation ◽  
Time Domain ◽  
High Speed ◽  
Steering System ◽  
Performance Criteria ◽  
Domain Modeling ◽  
Added Resistance ◽  
Steering Control ◽  
Time Domain Modeling

The problem of steering control of high-speed containerships to minimize propulsion losses is addressed. The approach involves time domain modeling and simulation. A dynamic model of a containership and steering system in a seaway is constructed. Performance criteria for added resistance associated with yawing and steering are discussed. Losses resulting from yawing of the uncontrolled ship in heavy weather are shown by simulation to be significant. The results presented form a basis for design of a controller to minimize steering related losses.

Independent Torque Control of an Independent-Wheel-Drive Electric Vehicle

2014 ◽  
Vol 663 ◽  
pp. 493-497
Author(s):  
M.H.M. Ariff ◽  
Hairi Zamzuri ◽  
N.R.N. Idris ◽  
Saiful Amri Mazlan ◽  
M.A.M. Nordin
Keyword(s):  
Electric Vehicle ◽  
High Speed ◽  
Controller Design ◽  
Torque Control ◽  
Lateral Acceleration ◽  
Steering Control ◽  
Vehicle Handling ◽  
Direct Yaw Moment Control ◽  
Wheel Drive ◽  
Yaw Moment Control

This paper focuses on designing a controller to enhance the traction and handling of an Independent-Wheel-Drive Electric Vehicle (IWD-EV). It presents a traction torque distribution controller for an IWD-EV in order to maintain vehicle handling and stability during critical maneuvers. The proposed controller is based on the Direct Yaw-moment Control (DYC) and Active Front Steering control (AFS) which intended to increase the handling and stability of the vehicle respectively by applying the yaw rate and the lateral acceleration as the control variables. The performance of the controller is evaluated by numerical simulations of two standard high speed maneuvers which are the double lane change (DLC) and J-Curve. The proposed scheme presents a new controller design for IWD-EV which can effectively improved the vehicle handling and stability.

Composite control system of hybrid-driven mid-altitude airship

2017 ◽  
Vol 122 (1248) ◽  
pp. 173-204
Author(s):  
L. Chen ◽  
Q. Dong ◽  
G. Zhang ◽  
D. Duan
Keyword(s):  
Control System ◽  
Attitude Control ◽  
High Speed ◽  
High Efficiency ◽  
Position Control ◽  
Controller Design ◽  
Weight Ratio ◽  
Composite Control ◽  
Primary Object ◽  
Aerodynamic Surfaces

ABSTRACTIn general, an airship is equipped with hybrid-heterogeneous actuators: the aerodynamic surfaces, the vectored propellers and the buoyant ballonets. The aerodynamic surfaces have high efficiency in attitude control at high speed. However, vectored propellers are also introduced here for attitude control under the special working condition of low airspeed. Due to the lower thrust-to-weight ratio, the composite control of hybrid-heterogeneous actuators is the primary object in controller design for an airship. In composite attitude control, first the attitude moment allocation between aerodynamic control surfaces and vectored propellers is designed according to different dynamic airspeed, to achieve the smooth motion transition from low to high airspeed, then the weighted generalised inverse (WGI) is used to design the reconfigurable actuator allocation among the homogeneous multi-actuators, where the authority of every actuator can be decided by setting the corresponding value of the weight matrix, thus the control law is unchanged under different actuator configurations. Taking the mid-altitude airship as an example, the simulations of position control, trace tracking and altitude control are provided. Simulation results demonstrate that the attitude moments allocation obtains moment distribution between the aerodynamic surfaces and the vectored propellers under different airspeeds; the reconfigurable actuator allocation achieves a good distribution and reconfiguration among homogeneous actuators, thereby enhancing the reliability of the control system.

scholarly journals The controller of the steering control system of a high-speed tracked vehicle with individual drive wheels

2019 ◽  
Vol 42 (4) ◽  
pp. 21-28
Author(s):  
V.A. Gorelov ◽  
◽  
B.B. Kosicyn ◽  
A.V. Miroshnichenko ◽  
A.A. Staduhin ◽  
...  
Keyword(s):  
Control System ◽  
High Speed ◽  
Steering Control ◽  
Tracked Vehicle

Study on Vehicle Stability Control Based on Yaw Following and 4WS

2011 ◽  
Vol 204-210 ◽  
pp. 1724-1727
Author(s):  
Si Qi Zhang ◽  
Shu Wen Zhou ◽  
Guang Yao Zhao
Keyword(s):  
Control System ◽  
Obstacle Avoidance ◽  
High Speed ◽  
Stability Control ◽  
Vehicle Stability ◽  
Lateral Stability ◽  
Steering Control ◽  
Stopping Distance ◽  
Vehicle Stability Control ◽  
Will Force

Because of the high speed and insufficient stopping distance, a sudden obstacle will force the vehicle to perform a lane change maneuver to avoid a crash or rear-end collision. A vehicle yaw following control system was designed in this paper to prevent vehicles from spinning and drifting out on high speed obstacle avoidance under emergency. However, yaw following control system, in some situation, may not react properly to, or even deteriorate on-road rollover events. Four-wheel steering control system can reduce the excessive yaw movement due to yaw following control system. An integration control system, including yaw following control system and four-wheel steering control system was presented and discussed. With this improved control system, the vehicle lateral stability can be improved on high speed obstacle avoidance.

A Steering Control System to Minimize Propulsion Losses of High-Speed Containerships—Part II: Controller Design

1982 ◽  
Vol 104 (1) ◽  
pp. 9-18 ◽  
Author(s):  
R. E. Reid ◽  
J. W. Moore
Keyword(s):  
High Speed ◽  
Linear Models ◽  
Controller Design ◽  
Weather Conditions ◽  
Adaptive Controller ◽  
Frequency Domain Analysis ◽  
Domain Modeling ◽  
Steering Control ◽  
The Face ◽  
Time Domain Modeling

An approach to design of steering controls for high-speed containerships to minimize propulsion losses is described. It involves time domain modeling and simulation, frequency domain analysis, and control structure investigation. A design process based on the use of linear modern and classical control techniques with locally linear models to minimize propulsion losses at important design conditions on the ship’s operating envelope is discussed. An adaptive controller to provide envelope-wide control in the face of changing environmental conditions and ship characteristics is described. Results from simulations and full-scale sea tests are summarized. On the basis of these preliminary results it appears that the adaptive controller works well under different speed and weather conditions and offers the potential for a reduction in propulsion losses over an existing PID autopilot.

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