IEEE Transactions on Industrial Electronics

Volume 48, Number 4, August 2001 Access to the journal on IEEE XPLORE IE Transactions Home Page

Special section on Intelligent Systems

48.4.1	Kim Fung Man, "Guest editorial special section on intelligent systems," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 722-723, August 2001. Abstract Link Full Text Abstract: Not Available
48.4.2	M. Watanabe, M. Furukawa, A. Mizoe, T. Watanabe, "GA applications to physical distribution scheduling problem," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 724-730, August 2001. Abstract Link Full Text Abstract: A physical distribution system has a number of optimization problems. Most of them belong to a combinatorial problem, to which conventional mathematical programming methods may hardly be applied. This paper reports on two applications of the genetic algorithm (GA) to physical distribution scheduling problems, which arise at real physical distribution centers. The developed GA schedulers took the place of conventional schedulers, which were coded by rule-based technologies. Advantages of the introduction of GA schedulers into the physical distribution system are as follows: (1) the GA becomes a general problem-solver engine. Once we develop this engine, we only have to develop interfaces for the applications; and (2) fitness functions necessary for the GA force the physical distribution schedulers to have approximate performance estimation. This was not taken into consideration when the rule-based scheduler was used. Two applications of the discussed schedulers were implemented with real distribution centers, and they brought much efficiency to their management
48.4.3	Suk Lee, Sang Ho Lee, Kyung Chang Lee, Man Hyung Lee, F. Harashima, "Intelligent performance management of networks for advanced manufacturing systems," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 731-741, August 2001. Abstract Link Full Text Abstract: This paper focuses on performance management of communication networks serving various manufacturing systems. The performance management aims to improve the network performance in handling various types of messages by online adjustment of protocol parameters such as timers and queue capacities. The principles of fuzzy logic, genetic algorithms, and neural networks have been combined in formulating the performance management rules and fine-tuning the manager. In order to demonstrate the efficacy of this approach, a performance management procedure developed for the IEEE 802.4 protocol standard has been evaluated via discrete-event simulation
48.4.4	V. Varadan, H. Leung, "Reconstruction of polynomial systems from noisy time-series measurements using genetic programming," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 742-748, August 2001. Abstract Link Full Text Abstract: The problem of functional reconstruction of a polynomial system from its noisy time-series measurement is addressed in this paper. The reconstruction requires the determination of the embedding dimension and the unknown polynomial structure. The authors propose the use of genetic programming (GP) to find the exact functional form and embedding dimension of an unknown polynomial system from its time-series measurement. Using functional operators of addition, multiplication and time delay, they use GP to reconstruct the exact polynomial system and its embedding dimension. The proposed GP approach uses an improved least-squares (ILS) method to determine the parameters of a polynomial system. The ILS method is based on the orthogonal Euclidean distance to obtain an accurate parameter estimate when the series is corrupted by measurement noise. Simulations show that the proposed ILS-GP method can successfully reconstruct a polynomial system from its noisy time-series measurements
48.4.5	Y. Katada, M. Svinin, K. Ohkura, K. Ueda, "Stable grasp planning by evolutionary programming," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 749-756, August 2001. Abstract Link Full Text Abstract: This paper deals with the problem of synthesis of stable grasp by multifingered hands. First, a mathematical description of the problem is formulated. The grasp to be synthesized should satisfy equilibrium conditions and unilateral frictional constraints. In addition, it should be stable against disturbances applied to the object. Two types of stability conditions, contact stability and Lyapunov stability, are taken into consideration. Contact points, contact forces and joint stiffnesses are considered as the problem variables. The objective function maximizes admissible linear and rotational disturbances applied to the object, Since the dimension and the complexity of the resulting constrained optimization problem is high enough, the evolutionary programming (EP) approach is explored. Two EP techniques, a conventional one and a specially designed robust technique with a genetic drift, are discussed. The feasibility of these techniques is verified for the synthesis of stable grasp by a three-fingered robotic hand
48.4.6	K.S. Tang, Kim Fung Man, Guanrong Chen, S. Kwong, "An optimal fuzzy PID controller," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 757-765, August 2001. Abstract Link Full Text Abstract: This paper introduces an optimal fuzzy proportional-integral-derivative (PID) controller. The fuzzy PID controller is a discrete-time version of the conventional PID controller, which preserves the same linear structure of the proportional, integral, and derivative parts but has constant coefficient yet self-tuned control gains. Fuzzy logic is employed only for the design; the resulting controller does not need to execute any fuzzy rule base, and is actually a conventional PID controller with analytical formulae. The main improvement is in endowing the classical controller with a certain adaptive control capability. The constant PID control gains are optimized by using the multiobjective genetic algorithm (MOGA), thereby yielding an optimal fuzzy PID controller. Computer simulations are shown to demonstrate its improvement over the fuzzy PID controller without MOGA optimization
48.4.7	P. Wide, "The electronic head: a virtual quality instrument," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 766-769, August 2001. Abstract Link Full Text Abstract: This paper describes a new approach to virtual instrumentation, qualitative estimation, and decision making of a dynamically changing quality assessment. The authors illustrate this approach in an electronic head concept, in which they combine the amount of information received, and apply feature extraction analysis and a fuzzy clustering technique to assess the quality as acquired from a human expert. By combining data from different artificial sensor systems into a single set of meaningful features, they obtain information that is of greater human benefit than the aggregate of its contributing sensors. The combination of sensor data by fuzzy rules has the aim of performing human-like inferences that may be impossible by the single artificial sensors. The entire sensor system acts as a virtual instrument for dynamic industrial process monitoring. This virtual instrument allows easy sensor observation and learning interaction with a human operator Power Electronics
48.4.8	Chang-Shiarn Lin, Chern-Lin Chen, "A novel single-stage push-pull electronic ballast with high input power factor," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 770-776, August 2001. Abstract Link Full Text Abstract: A novel single-stage push-pull electronic ballast with high input power factor is presented in this paper. The proposed electronic ballast combines the front-end power-factor corrector and push-pull converter into a single-stage power converter. Compared to the single-stage class-D electronic ballast, the proposed circuit does not require an isolated driver. The control of the circuit is easier and the cost less. The circuit of the ballast is analyzed and the design guidelines are listed. The experimental results verify the theoretical derivation
48.4.9	Xinbo Ruan, Yangguang Yan, "A novel zero-voltage and zero-current-switching PWM full-bridge converter using two diodes in series with the lagging leg," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 777-785, August 2001. Abstract Link Full Text Abstract: This paper proposes a novel phase-shifted zero-voltage and zero-current-switching (ZVZCS) pulsewidth modulation full-bridge converter, which realizes ZVS for the leading leg and ZCS for the lagging leg. A blocking capacitor is added in series with the primary winding of the transformer to make the primary current decay to zero during zero state to ensure ZCS for the lagging leg. In order to prevent the primary current from reversing during zero state, two diodes in series with the lagging leg are added. The principle of operation, steady-state analysis, and design procedures are presented. The experimental results are also included to verify the theoretical analysis
48.4.10	R. Datta, V.T. Ranganathan, "A simple position-sensorless algorithm for rotor-side field-oriented control of wound-rotor induction machine," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 786-793, August 2001. Abstract Link Full Text Abstract: A simple position-sensorless method for the rotor-side field-oriented control of a wound-rotor induction machine is described in this paper. The algorithm is based on axis transformations. Compared to the previously proposed methods, it is more direct and the dependence on machine parameters is also largely reduced. The algorithm can be started on the fly without the knowledge of the initial rotor position. Operation at synchronous speed, corresponding to zero rotor frequency, is stable, thus making it suitable for variable speed constant frequency operations. Simulation and experimental results show excellent performance of the scheme
48.4.11	Namho Hur, Jinhwan Jung, Kwanghee Nam, "A fast dynamic DC-link power-balancing scheme for a PWM converter-inverter system," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 794-803, August 2001. Abstract Link Full Text Abstract: The authors propose a new power converter control scheme for a converter-inverter system. The strategy is to fully utilize the inverter dynamics in controlling the converter dynamics. The authors obtain the power dynamics for both converter and inverter systems, and control the converter power so that it matches the required inverter power exactly. Then, in the ideal case, no power flows through the DC-link capacitors and, thus, the DC-link voltage does not fluctuate even though a very small amount of the DC-link capacitance is used. In forcing the converter power to match the inverter power, the authors utilize the master-slave control concept. They control the DC-link voltage level indirectly through the stored capacitor energy in order to exploit the advantage of the linear dynamic behavior of the capacitor energy. This helps them to circumvent a complex control method in regulating the DC-link voltage. Through simulation and experimental results, the superiority of the proposed converter control scheme is demonstrated
48.4.12	Bong-Hwan Kwon, Jin-Ha Choi, Tae-Won Kim, "Improved single-phase line-interactive UPS," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 804-811, August 2001. Abstract Link Full Text Abstract: An improved single-phase line-interactive uninterruptible power supply (UPS) is proposed for low-power applications with low cost. The proposed UPS is comprised of two push-pull converters based on a low-voltage battery for reduced cost: one in series with the input and the other in parallel with the load. In the presence of input power, the UPS acts as an output voltage regulator and at the same time as an active filter while charging the battery. In case of loss of input power, the UPS supplies a regulated sinusoidal voltage to the load, drawing power from the battery. The series converter compensates only a small percentage of the input voltage carrying the input current and, therefore, a reduced rating is made. The parallel converter always supplies a nominal voltage and makes a seamless transition to backup mode. In the voltage determination of the parallel converter, the nominal voltage is derived using the feedback linearization concept and then a perturbed voltage is determined for the reactive power control or output voltage regulation. Experimental results obtained from a 1-kVA prototype are discussed
48.4.13	S.A. Gonzalez, M.I. Valla, C.H. Muravchik, "Analysis and design of clamped-mode resonant converters with variable load," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 812-819, August 2001. Abstract Link Full Text Abstract: In this paper, a design procedure for clamped-mode resonant converters working with variable load is proposed and analyzed. The operation of these converters with general parallel or series loads is reviewed first. The operation of the transistors as zero-voltage switches is identified and characterized as mode A. Mode A is preferred to simplify the implementation of the power switches and to increment the converter efficiency. As a case study, the design of an RF power amplifier is presented. The amplifier is connected to a variable load with reactive characteristics, through a low-pass filter of three elements. The validity of the proposed design approach is verified with an experimental setup Drive Control
48.4.14	Keliang Zhou, Danwei Wang, "Digital repetitive learning controller for three-phase CVCF PWM inverter," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 820-830, August 2001. Abstract Link Full Text Abstract: In this paper, a plug-in digital repetitive leaning control scheme is proposed for three-phase constant-voltage constant-frequency (CVCF) pulsewidth modulation inverters to achieve high-quality sinusoidal output voltages. In the proposed control scheme, the repetitive controller (RC) is plugged into the stable one-sampling-ahead-preview-controlled three-phase CVCF inverter system using only two voltage sensors. The RC is designed to eliminate periodic disturbance and/or track periodic reference signal with zero tracking error, The design theory of plug-in repetitive learning controller is described systematically and the stability analysis or overall system is discussed. The merits of the controlled systems include features of minimized total harmonic distortion, robustness to parameter uncertainties, fast response, and fewer sensors. Simulation and experimental results are provided to illustrate the effectiveness of the proposed scheme
48.4.15	A. El Hajjaji, M. Ouladsine, "Modeling and nonlinear control of magnetic levitation systems," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 831-838, August 2001. Abstract Link Full Text Abstract: In this paper, the authors propose a nonlinear model for magnetic levitation systems which is validated with experimental measurements. Using this model, a nonlinear control law based on differential geometry is firstly synthesized. Then, its real-time implementation is developed. In order to highlight the performance of the proposed control law, experimental results are given
48.4.16	R. Monajemy, R. Krishnan, "Control and dynamics of constant-power-loss-based operation of permanent-magnet synchronous motor drive system," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 839-844, August 2001. Abstract Link Full Text Abstract: The operational envelope of electrical machines is limited by the maximum permissible power loss of the machine at any given speed. The control and dynamics of the permanent-magnet synchronous motor (PMSM) drive operating with a maximum power loss versus speed profile is proposed in this paper. The proposed operational strategy is modeled and analyzed. Its comparison to the conventional strategy of limiting current and power to rated values demonstrates the superiority of the proposed scheme. The implementation of the proposed strategy is developed. It is achieved with an outer power loss feedback control loop. This has the advantage of retrofitting the present PMSM drives with the least amount of software/hardware effort. The PMSM drives in this case then can use the existing controllers to implement any torque control criteria, such as constant torque angle, unity power factor, constant air-gap flux linkages, maximum torque per unit current, or maximum-efficiency operation. Experimental verification of the new operational strategy is provided. The concepts presented in this paper can be applied to all other types of motor drives Emerging Technology
48.4.17	Shiuh-Jer Huang, Kuo-See Huang, "An adaptive fuzzy sliding-mode controller for servomechanism disturbance rejection," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 845-852, August 2001. Abstract Link Full Text Abstract: A two-level spring-lumped mass servomechanism system was constructed for disturbance rejection control investigation. This dynamic absorber is similar to a model of the serial-type vehicle suspension system. The lower level is actuated by two DC servo motors, to provide the specified internal and external disturbances to the vibration control system. The upper level has another DC servo motor to control the main body balancing position. In order to tackle the system's nonlinear and time-varying characteristics, an adaptive fuzzy sliding-mode controller is proposed to suppress the main mass position variation due to external disturbance. This intelligent control strategy combines an adaptive rule with fuzzy and sliding-mode control technologies. It has online learning ability for responding to the system's time-varying and nonlinear uncertainty behaviors, and for adjusting the control rules and parameters. Only seven rules are required for this control system, and its control rules can be established and modified continuously by online learning. The experimental results show that this intelligent control approach effectively suppresses the vibration amplitude of the body, with respect to the external disturbance Robotics and Vision
48.4.18	Yongoug Chung, Chongkug Park, F. Harashima, "A position control differential drive wheeled mobile robot," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 853-863, August 2001. Abstract Link Full Text Abstract: For more accurate path tracking of a four-wheeled two-degrees-of-freedom mobile robot (WMR), a position control algorithm is proposed with two separated feedback loops, a velocity feedback loop and a position feedback loop. In the most conventional position control system of a WMR, internal error is mainly considered, while external error has, as yet, hardly been treated, although it plays an important role in accurate position control. This external error is caused by unexpected environmental situations. The proposed control algorithm is designed to compensate for both internal error and external error. This algorithm makes it possible to accurately follow the designed trajectory Letters to the Editor
48.4.19	N. Massmoudi, D. M'bairi, B. Allard, H. Morel, "On the validity of the standard SPICE model of the diode for simulation in power electronics," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 864-867, August 2001. Abstract Link Full Text Abstract: A systematic study of the standard SPICE model of the diode in the case of simulations of power diodes in power electronic applications shows the limits of accuracy with respect to experiments. Therefore, the interest in such a model in power electronic applications is comparable to the high-low resistance model
48.4.20	D. Telford, M.W. Dunnigan, B.W. Williams, "A novel torque-ripple reduction strategy for direct torque control [of induction motor]," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 867-870, August 2001. Abstract Link Full Text Abstract: This letter presents a simple duty-cycle control scheme for the direct torque control of an induction motor. The scheme reduces torque ripple, controls the average output torque, and reduces the variation in switching frequency. The effectiveness of the proposed technique is demonstrated through experimental results
48.4.21	L.U. Gokdere, M.A. Simaan, C.W. Brice, "Passivity-based control of saturated induction motors," IEEE Trans. on Industrial Electronics, vol. 48, no. 4, pp. 870-872, August 2001. Abstract Link Full Text Abstract: A passivity-based controller, which takes into account saturation of the magnetic material in the main flux path of the induction motor, is developed to provide close tracking of time-varying speed and flux trajectories in the high magnetic saturation regions. The proposed passivity based controller is experimentally verified. Also, a comparison between the controllers based on the saturated and nonsaturated magnetics is presented to demonstrate the benefit of the controller based on the saturated magnetics