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The purpose of control strategy is to present a novel controller of power assist steering system in electric vehicle. Firstly, integrated controller module was applied to electric vehicle whose front axle was refitted to meet the needs of two twin motors in independent hub wheel. Secondly, advanced algorithm was employed in optimizing decision-making rules of fuzzy controller. Thirdly, the new model...
This paper investigated the voltage control of V2G (Vehicle-to-grid) system in the off-grid mode. The control method based on voltage differential feedback and repetitive controller was proposed. The novel method based on Rectangular-Trapezoidal was proposed to implement differential discretization. An improved repetitive controller with a novel phase lead compensator is presented and leads V2G system...
These days inductor current ripple based ‘current mode constant on time (CMCOT)’ control is widely used in voltage regulators (VRs) for its higher light load efficiency, higher bandwidth and simple compensation network. In today's VRs, high load current with very high slew rate is a very common requirement in microprocessor or memory applications. One issue of this ripple based CMCOT control is that,...
The function of fire control system on armored vehicle and the importance of test and evaluation (T&E) for weapon system were described. Composition and working principle of automatic force application system were introduced. For specific problems appeared in use of force sensor, outlier detection of measured data and its generating reason were analyzed with 3σ and Romanovski criteria. In which,...
Disasters cause the damage of energy management systems, causing power grid monitoring and dispatching interrupt and abnormal operation, imposing a great impact on society. Establishing disaster backup system is in urgent need to improve the reliability and tolerance. The paper presents an analysis and evaluation model of backup system constructing, indicates the advantages of integrated inter-reserve...
In this paper, a novel direct adaptive NN control algorithm is proposed for a class of ship course autopilot with input saturation. Neural networks (NNs) are used to tackle unknown nonlinear function, and then an adaptive NN controller is constructed by combining Lyapunov function and the backstepping technique. By utilizing a special property of the affine term, the developed scheme avoids the controller...
In this paper, a novel robust adaptive control algorithm is proposed for a class of ship course autopilot with parameter uncertainty and input saturation. With the help of Lyapunov stability theory and adaptive backstepping technique, one controller is constructed by considering parameter uncertainty and actuator saturation constraints, and the stability analysis subject to the effect of input saturation...
This paper compares the characteristics of the numerically controlled systems of the parallel machine tools and the traditional ones. Based on an open numerically controlled platform, a method of developing the numerically controlled system of a parallel machine tool is proposed. So long as the numerical program is embedded into a mature numerically controlled platform as a functional module through...
To enhance yaw stability of the vehicle with Active Front Steering System, a vehicle two-degree-of-freedom simple model is set up. The feedback of the yaw rate is regarded as an input; we propose a yaw moment control based on fractional-order PID controller, and parameters in-line setting in the process of control is realized. The developed controller generates the suitable yaw moment so that the...
Because of incompatibility between different control systems about auto parts mixed product line, the upgrade of control system is difficult. Through analyzing the relative merits of FCS and DCS, the composite control system was developed. Firstly, the current automatic technology and why to adopt DCS and FCS in the product line are discussed. Secondly, it provided composite control models and analysed...
Steering-by-Wire system has received lot of attention in the recent years because of the development of vehicle stability control systems and intelligent vehicle highway systems. The variable structure controller based on the reference model with a drive model is insensitive to parameter variations so that the available control authority and the effect of Steering-by-Wire system on vehicle yaw response...
In this paper a sliding mode controller is presented for a class of master-slave chaotic systems with uncertainties. In order to avoid the effects of uncertainties, an improved approaching law based on time-variable parameters is then proposed. In the approaching law, parameters are not constants, but they are time-variable according to the given variable laws. The proposed scheme can be implemented...
The gain-scheduling was a good choice for dynamic systems whose operation range were very large, when the dynamic systems were turned into linear parameter varying systems (LPV) through appropriate states transform. The method of designing robust gain-scheduling to LPV system based on polytopic was studied, and a new scheduling strategy was proposed because of the conservatism of the scheduling strategy...
Based on backstepping control laws, a method of separating the coupling variables is proposed, and the decoupling control strategy is developed for passive force control system. The coupling mathematic model of passive force control system is built first. Then using the developed method, the coupling relation of the system is moved to the initial input of each subsystem step by step, then gets the...
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