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This paper considers vehicle speed dependent assistant control problems for electric power steering systems (EPSs). According to the requirement analysis of the vehicle speed dependent assistant control, a mathematical model of EPSs is established, and a double closed-loop control system structure is proposed. Based on the assist characteristic of the desired steering wheel torque, the function model...
It presents the design and implementation of a manufacturing system integrating information and control technologies to provide an access to the user into part of the production system. A distributed control system is structured using didactic plants which emulate a manufacturing system of soft drinks. The control system is developed in Codesys®, integrating its operation through a monitoring system...
In this paper, a concept to optimize power generated by a stand-alone photovoltaic (PV) system is proposed. A modification of algorithm control technique for optimizing of battery charging, overcharge protection and maximum power tracking have implemented. The optimum power generated can be achieved by improving the control technique (bootstrap technique) of P&O maximum power point tracking (MPPT)...
Nowadays, the solar power systems are quickly developing in many countries to replace the fossil power sources and mitigate the environment pollution. The working efficiency of the power conditioner system in the solar power system is not high because the energy supply from solar array depends on the weather. The utilization rate of the power conditioner system can be increased by supplementing the...
Indonesia is a big country which has many isolated power system networks. Sumatera power system is one of the main power system networks in Indonesia that supplies electricity for more than 45 million inhabitants in Sumatera Island. For the transmission topology and load characteristic, there are some dynamic stability problems in Sumatera power system such as voltage and small signal stability. To...
This paper proposes a design pattern based on the service-oriented architecture for the design of flexible distributed automation control system for substation automation systems. The design pattern is intended to be applied to control systems based on the leading standards for software development of smart grid: IEC 61850 and IEC 61499. The proposed design pattern models system requirements as orchestrators...
This paper proposes the improvement method of operability in a bilateral control by using visual information. The bilateral control system consists of a master system which is manipulated by the operator and a slave system which contacts remove environment. Considering the actual use of the bilateral control, the operator manipulates the master system while watching the visual information from the...
In order to realize the differential function of electric vehicle driven by two rear wheel-hub motors, by following the optimal slip ratio of each wheel and equalizing the slip ratio of both drive wheels as target, a electronic differential control strategy based on terminal sliding mode is proposed. First of all, according to the standard μ-λ curve, the optimal slip ratio of the pavement is determined...
This paper proposes a full-order terminal sliding-mode based energy saving control for the grid-connected converter of induction motor systems. DC-link voltage and currents controllers of the converter are designed respectively using the full-order terminal sliding manifold and the related control strategies. The chattering in the sliding-mode control is attenuated, and continuous control signals...
Earlier, Chao pioneered the very first closed-form solution (CFS) of the number of control related states (CRSs) for k-th order systems, which was the first step in facilitating an exponential computation time for enumerating reachable states of a particular large Petri net (PN), reducing this to within a second. This paper progresses a step further in enumerating the control related states for double-deficient...
Reliability of power electronics is a critical issue, as most of the electrical energy is processed by power electronics. Various stressors impact the safe operation of the systems, including harsh environments, temperature variations, humidity, vibration and radiation. Physics of failure analysis uses models that describe how failure mechanisms evolve over time and induce failures. Active methods...
A novel load current sharing method is proposed for multi-module LLC resonant converters in high power application in this paper. The paralleled system is controlled by the maximum current sharing method to achieve load sharing automatically. Moreover, a series inductor is connected to each LLC output side to restrain the current ripple of double switching frequency. The maximum current sharing method...
The new generation intelligent park is demanded for the flexible utilization mode of distributed renewable energy, energy storage equipment and the various characteristic load access. However, the energy router is correspondingly responsible for energy routing and dynamic control. Its uniform interface supports the plug and play of distributed power, energy storage and load of the intelligent park...
In this paper, we study the stability of fractional-order systems with distributed delays under Riemann-Liouville derivatives. First, the sufficient condition for stability of fractional-order system with distributed delays is presented by applying continuous frequency distributed equivalent model with indirect Lyapunov approach and combining Lyapunov-Krasovskii functionals with Jensen inequality...
The emulation of synchronous machines is an attractive solution to improve the integration of distributed energy resources in weak grids. In this sense, synchronverters have been widely analysed in the literature, but their digital implementation has been seldom studied. This paper presents the discrete-time implementation of the control algorithms for a battery-supported synchronverter in a weak...
Dead-time effect of dual active bridge (DAB) DC-DC converter is usually out of consideration in traditional optimized strategies, causing the deviation of the theoretical and actual results. In this paper, the current stress model of DAB with dead-time effect is given, and combining the transmission power model, a current-stress-optimized strategy is proposed. Meanwhile, the corresponding control...
On the information security of ACS TP negatively influenced by increasing their integration with enterprise systems management, as well as the wide spread of remote access technologies. Additional information security risks arise on the background of the smooth transition analogue of technology on hardware platform based x86, and active implementation of IP technology in the ACS environment. The combination...
Nowadays, the control systems based on communication networks are used various industries such as manufacturing, automotive, aerospace, power generation and distribution, with many advantages and a couple of disadvantages. The latter can seriously affect the performances and the stability of each control system in the network and of the complex system as a whole. Moreover, it is well known that packet...
To the optical mechanical complexes of tracking and positioning, strict requirements are produced on the dynamics and permissible errors under such conditions as external and internal nonstationary disturbances, as well as presence of elastic deformations in the links of the driven mechanism. In modern systems, adaptive control algorithms have proven themselves as complementary to the main control...
In this paper, the principal possibility of using modal logic in the tasks of self-learning of intelligent mobile robots operating in an unknown environment is considered. The methodology for creating a model of the intelligent mobile robot control system with a self-learning module is presented. The basic principles and concepts of modal logic are described. To substantiate the applicability of the...
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