EPE Association: EPE 1999 - Topic 06a: Servo Drives; Stepping, Linear and Brushless Drives

EPE 1999 - Topic 06a: Servo Drives; Stepping, Linear and Brushless Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 06: MOTION CONTROL AND ROBOTICS > EPE 1999 - Topic 06a: Servo Drives; Stepping, Linear and Brushless Drives

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   A Bipolar Hybrid Stepping Motor Drive Using a 6-Switch Inverter
By J.D. Wale; C. Pollock [View]
[Download]

Abstract: A practical power switching arrangement for a two-phase hybrid stepping motor drive supplying quadrature bipolar phase currents is described. This novel technique uses just six power switches, allowing the use of readily available three-phase power inverter modules. Drive cost is consequently lower than for a conventional eight switch design.

   A New Linear Drive for a Magnetic Levitation Transport System
By W. Evers; G. Henneberger [View]
[Download]

Abstract: This paper deals with a special kind of linear synchronous motor called homopolar motor. The motor is designed to drive autonomous transportation vehicles, optionally equiped with a magnetic levitation system and a contactless energy and information transmission. The main advantages of the motor are the low normal force and the passive track consisting only of iron. In combination with a magnetic levitation system, like the one presented in [4], the vehicle has no wear and no serviceable parts. An application of this system is useful where maintenance would cause expensive plant standstill. Other possible applications are places where dust, caused by the wear of conventional friction drives, is to be kept to a minimum, as in clean rooms or in food industries. Furthermore this system has advantages in low energy consumption and distinctly low noise. A new optimized type of the motor is presented within this paper.

   Determination of Thrust Force Ripple of a Spherical Linear PM Motor for a Direct Telescope Drive
By M. Anders; E-CH. Andresen; A. Binder [View]
[Download]

Abstract: A three axes torque motor consisting of several spherical shaped linear motor units for adjusting an airborne telescope is presented. An analytical calculation method for the produced thrust force of one motor unit using a tow layer chorded air gap winding is described. Calculation results are varified by test results of an existing test bench, providing the low thrust force ripple of 3% of related thrust force.

   H-inf. Control of Electromagnetic Suspension for non-contact Conveyance of Thin Steel Plates
By X. Dehong; F. Wei; E. Masada [View]
[Download]

Abstract: To improve robustness and performance of an EMS control system for non-contact steel plate conveyance, H-inf control is introduced to stabilize the EMS plant. Perturbed model due to variation of suspended weight, air gap and magnetic characteristic deviations is investigated. Based on the model, a H-inf controller for EMS steel plate conveyance is designed and compared with PID control by simulation and experiment.

   Optimization of Thrust Force Characteristics of Linear Induction by Adopting Wound Secondary Members
By T. Onuki; Y. Kamiya; T. Iraha; K. Fukaya; K. Hayashi [View]
[Download]

Abstract: This paper describes Single-sided Linear Induction Motors (SLIMs) with short primary members. In general, this type of SLIM has a solid-plate conductor for the secondary throughout the operating region. In this study, we propose partial adoption of wound secondary members in the SLIMs in sections where high driving or braking force is required. Adopting this scheme, desirable performance, such as thrust force characteristics, can be obtained by applying the proportional shifting method. Here, we investigate running characteristics including thrust force of SLIMs with various secondary resistances. Further, we attempt to improve acceleration and deceleration characteristics of the SLIMs by arranging proper secondary resistances.

   Study of Stability of Indirect Field-Oriented Drive Systems
By Marian Dubowski [View]
[Download]

Abstract: In the paper a stability analysis of indirect field-oriented drive systems is presented. It is proved that for the speed controllers (type P or PI), which are operating in linear range, this class is globally stable. Regarding the controller saturation effect, the stability of the system is preserved in sufficiently large (from practical point of view) parameter values neighbourhood of the conventionally tuned controllers.

   The Study of Development for the Linear Magnetic Position Sensor
By M. Kajioka; M. Watada; D. Ebihara [View]
[Download]

Abstract: The paper describes on the study of development for the linear magnetic position sensor which is generally called the linear resolver. It senses inductance deviation between the mover and the stator which having teeth and slots. Specific design has adopted to have higher sensing level and wave form to improve position accuracy.

EPE 1999 - Topic 06a: Servo Drives; Stepping, Linear and Brushless Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 06: MOTION CONTROL AND ROBOTICS > EPE 1999 - Topic 06a: Servo Drives; Stepping, Linear and Brushless Drives
	[return to parent folder]

	A Bipolar Hybrid Stepping Motor Drive Using a 6-Switch Inverter By J.D. Wale; C. Pollock	[View] [Download]
Abstract: A practical power switching arrangement for a two-phase hybrid stepping motor drive supplying quadrature bipolar phase currents is described. This novel technique uses just six power switches, allowing the use of readily available three-phase power inverter modules. Drive cost is consequently lower than for a conventional eight switch design.

	A New Linear Drive for a Magnetic Levitation Transport System By W. Evers; G. Henneberger	[View] [Download]
Abstract: This paper deals with a special kind of linear synchronous motor called homopolar motor. The motor is designed to drive autonomous transportation vehicles, optionally equiped with a magnetic levitation system and a contactless energy and information transmission. The main advantages of the motor are the low normal force and the passive track consisting only of iron. In combination with a magnetic levitation system, like the one presented in [4], the vehicle has no wear and no serviceable parts. An application of this system is useful where maintenance would cause expensive plant standstill. Other possible applications are places where dust, caused by the wear of conventional friction drives, is to be kept to a minimum, as in clean rooms or in food industries. Furthermore this system has advantages in low energy consumption and distinctly low noise. A new optimized type of the motor is presented within this paper.

	Determination of Thrust Force Ripple of a Spherical Linear PM Motor for a Direct Telescope Drive By M. Anders; E-CH. Andresen; A. Binder	[View] [Download]
Abstract: A three axes torque motor consisting of several spherical shaped linear motor units for adjusting an airborne telescope is presented. An analytical calculation method for the produced thrust force of one motor unit using a tow layer chorded air gap winding is described. Calculation results are varified by test results of an existing test bench, providing the low thrust force ripple of 3% of related thrust force.

	H-inf. Control of Electromagnetic Suspension for non-contact Conveyance of Thin Steel Plates By X. Dehong; F. Wei; E. Masada	[View] [Download]
Abstract: To improve robustness and performance of an EMS control system for non-contact steel plate conveyance, H-inf control is introduced to stabilize the EMS plant. Perturbed model due to variation of suspended weight, air gap and magnetic characteristic deviations is investigated. Based on the model, a H-inf controller for EMS steel plate conveyance is designed and compared with PID control by simulation and experiment.

	Optimization of Thrust Force Characteristics of Linear Induction by Adopting Wound Secondary Members By T. Onuki; Y. Kamiya; T. Iraha; K. Fukaya; K. Hayashi	[View] [Download]
Abstract: This paper describes Single-sided Linear Induction Motors (SLIMs) with short primary members. In general, this type of SLIM has a solid-plate conductor for the secondary throughout the operating region. In this study, we propose partial adoption of wound secondary members in the SLIMs in sections where high driving or braking force is required. Adopting this scheme, desirable performance, such as thrust force characteristics, can be obtained by applying the proportional shifting method. Here, we investigate running characteristics including thrust force of SLIMs with various secondary resistances. Further, we attempt to improve acceleration and deceleration characteristics of the SLIMs by arranging proper secondary resistances.

	Study of Stability of Indirect Field-Oriented Drive Systems By Marian Dubowski	[View] [Download]
Abstract: In the paper a stability analysis of indirect field-oriented drive systems is presented. It is proved that for the speed controllers (type P or PI), which are operating in linear range, this class is globally stable. Regarding the controller saturation effect, the stability of the system is preserved in sufficiently large (from practical point of view) parameter values neighbourhood of the conventionally tuned controllers.

	The Study of Development for the Linear Magnetic Position Sensor By M. Kajioka; M. Watada; D. Ebihara	[View] [Download]
Abstract: The paper describes on the study of development for the linear magnetic position sensor which is generally called the linear resolver. It senses inductance deviation between the mover and the stator which having teeth and slots. Specific design has adopted to have higher sensing level and wave form to improve position accuracy.