EPE Association: EPE 1989 - 12 - Lecture Session 2.5: SIGNAL PROCESSING

EPE 1989 - 12 - Lecture Session 2.5: SIGNAL PROCESSING
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   ADAPTIVE AND SELF-COMMISSIONING CONTROL FOR A DRIVE WITH INDUCTION MOTOR AND CURRENT SOURCE INVERTER
By R. Jötten, E. D. Lettner [View]
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Abstract: A control system for a drive with induction motor and current source inverter has been implemented, using a microprocessor and a fast signal processor. The system is self-testing, self-setting and self-adapting for optimal control response and covers a large speed range, including the field weakening range and extremely low speeds. The peculiarities resulting from the special type of inverter and their influence on the control scheme, the determination of the parameters and the assignment of functions to microcomputer, signal processor and peripherals are described, as compared to the scheme with voltage source inverter.

   SINUSOIDAL PAM-PWM INVERTER USING POWER MOSFETS
By Katsunori Taniguchi [View]
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Abstract: A new PAM-PWM inverter suitable for use with power MOSFETs is described. The output waveforms in the proposed PAM-PWM inverter are investigated both theoretically and experimentally. The line-to-line voltage waveform is composed of fundamental component and the sidebands of carrier frequency. The lower-order harmonics are not included in the output waveform. As each inverter arm does not operate during two-thirds period, the heat generated in the devices are reduced. That is, the size of the inverter system is minimized because of the reduction in the heat dissipating equipment.

   INDUSTRIAL APPLICATIONS OF THE FULLY DIGITAL DRIVE PROCESSOR SYSTEM (FDPS). THE BENEFITS IN TERMS OF PERFORMANCE, VERSATILITY, EASE OF OPERATION, AND...
By B. Laurens [View]
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Abstract: In two earlier papers at EPE, we explained the general concepts of the FDPS. We shall see how these concepts can be implemented in typical industrial applications. The FDPS is a modular system designed to meet all electric machine drive control requirements. lt owes its versatility to a fully digital implementation. Although the FDPS can be implemented as a single-processor system, the most common architecture uses several microprocessors interconnected by a high-speed data link. The majority of the systems delivered today are in operation in the metals industry and mainly in South Korea. By the end of the year, about 250 units comprising over 650 microprocessors will have been delivered.

   CONTROL OF AC-SERVODRIVES BY MICROCONTROLLERS AND TRANSPUTERS - A COMPARISON
By D. Naunin; S. Beierke; H. C. Reuss; C. Sechelmann [View]
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Abstract: Digital control of high-dynamic servo systems for speeding and positioning AC-drives requires a high efficiency of the microcontroller system, caused by the complex control algorithms and the small time constants of the modern machines. Therefore the structure of microcomputer systems is of great importance. Conventional microcontroller systems are based on single- or multi-processor systems using a bus concept. A new generation of microcontrollers - Transputers - offers the possibillty of realizing a software-configurable network by point to point connections. Parallel processing is supported by high level languages. This paper analyses the flexibility of both structures and their application in robot control systems. Results of benchmark tests are given.

EPE 1989 - 12 - Lecture Session 2.5: SIGNAL PROCESSING
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1989 - Conference > EPE 1989 - 12 - Lecture Session 2.5: SIGNAL PROCESSING
	[return to parent folder]

	ADAPTIVE AND SELF-COMMISSIONING CONTROL FOR A DRIVE WITH INDUCTION MOTOR AND CURRENT SOURCE INVERTER By R. Jötten, E. D. Lettner	[View] [Download]
Abstract: A control system for a drive with induction motor and current source inverter has been implemented, using a microprocessor and a fast signal processor. The system is self-testing, self-setting and self-adapting for optimal control response and covers a large speed range, including the field weakening range and extremely low speeds. The peculiarities resulting from the special type of inverter and their influence on the control scheme, the determination of the parameters and the assignment of functions to microcomputer, signal processor and peripherals are described, as compared to the scheme with voltage source inverter.

	SINUSOIDAL PAM-PWM INVERTER USING POWER MOSFETS By Katsunori Taniguchi	[View] [Download]
Abstract: A new PAM-PWM inverter suitable for use with power MOSFETs is described. The output waveforms in the proposed PAM-PWM inverter are investigated both theoretically and experimentally. The line-to-line voltage waveform is composed of fundamental component and the sidebands of carrier frequency. The lower-order harmonics are not included in the output waveform. As each inverter arm does not operate during two-thirds period, the heat generated in the devices are reduced. That is, the size of the inverter system is minimized because of the reduction in the heat dissipating equipment.

	INDUSTRIAL APPLICATIONS OF THE FULLY DIGITAL DRIVE PROCESSOR SYSTEM (FDPS). THE BENEFITS IN TERMS OF PERFORMANCE, VERSATILITY, EASE OF OPERATION, AND... By B. Laurens	[View] [Download]
Abstract: In two earlier papers at EPE, we explained the general concepts of the FDPS. We shall see how these concepts can be implemented in typical industrial applications. The FDPS is a modular system designed to meet all electric machine drive control requirements. lt owes its versatility to a fully digital implementation. Although the FDPS can be implemented as a single-processor system, the most common architecture uses several microprocessors interconnected by a high-speed data link. The majority of the systems delivered today are in operation in the metals industry and mainly in South Korea. By the end of the year, about 250 units comprising over 650 microprocessors will have been delivered.

	CONTROL OF AC-SERVODRIVES BY MICROCONTROLLERS AND TRANSPUTERS - A COMPARISON By D. Naunin; S. Beierke; H. C. Reuss; C. Sechelmann	[View] [Download]
Abstract: Digital control of high-dynamic servo systems for speeding and positioning AC-drives requires a high efficiency of the microcontroller system, caused by the complex control algorithms and the small time constants of the modern machines. Therefore the structure of microcomputer systems is of great importance. Conventional microcontroller systems are based on single- or multi-processor systems using a bus concept. A new generation of microcontrollers - Transputers - offers the possibillty of realizing a software-configurable network by point to point connections. Parallel processing is supported by high level languages. This paper analyses the flexibility of both structures and their application in robot control systems. Results of benchmark tests are given.