EPE Association: EPE 1987 - 20 - Lecture Session 3.2: DRIVES (II)

EPE 1987 - 20 - Lecture Session 3.2: DRIVES (II)
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1987 - Conference > EPE 1987 - 20 - Lecture Session 3.2: DRIVES (II)

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   A HIGH ACCURACY INTEGRATED DRIVE
By O. Ruas; R. Letscher; J. P. Yonnet [View]
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Abstract: To obtain a compact, effective driving-package, a new speed reducer has been developed. It includes a performant Rare-earth brushless DC motor, and a resolver as a single speed and absolute position sensor. The rated power of the joint is about 50 W. It is supplied with a current fed PWM inverter, and controlled by a microprocessor. It has been successfully experimented, showing its zero backlasch and good efficiency.

   UTILITY OF MICROELECTRONICS IN POWER ELECTRONICS
By J. Koulischer; J. L. Van Eck; J. M. Bodson; T. Watteyne [View]
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Abstract: This paper shows that the Application Specific Integrated Circuits will open new ways for Power Electronics designers. Their main advantages are the highly increased reliability and the reduced conception time. It is also shown how progress in microelectronics technique have reduced both time and cost developments for low volume applications.

   EVALUATION OF MAGNETIC FORCE IN INDUCTION MOTOR DRIVEN BY 20 KHz CARRIER FREQUENCY SINUSOIDAL PWM INVERTER
By Toshihiro Nishimura; Toshihiko Murakami; Takeshi Inoue; Mutsuo Nakaoka; Toru Maruhashi [View]
[Download]

Abstract: This paper describes how to measure the magnetic force working in three phase induction motor driven by 20 kHz carrier sinusoidal PWM inverter and its experimental results. Voltage induced in the flux-detecting coil on all stator teeth in the motor is sent to the computer through Analog Digital converter. Moreover frequency and mode of the magnetic force are analyzed by Fast Fourier Transform. Through experimental results, the characteristics of the magnetic force in the motor driven by 20 kHz carrier sinusoidal PWM inverter are evaluated. In addition, the vibration and acoustic noise of the motor driven by 20 kHz carrier sinusoidal PWM inverter are examined and compared with those of the motor driven by a conventional inverter.

   REDUCTION OF ACOUSTIC NOISE IN INDUCTION MOTOR DRIVEN BY THREE PHASE PWM CHOPPER USING IGBT
By Takeshi Inoue; Toshihiro Nishimura; Mutsuo Nakaoka; Toru Maruhashi [View]
[Download]

Abstract: Three phase PWM chopper using IGBT which chops three phase AC voltage with carrier frequency 20 KHz and controls induction motor, is proposed. Harmonic components in voltage and current waveforms do not appear within audio frequency band in this method. When each terminal of the motor are connected with capacitor 4UF, the terminal voltage and line current waveforms of the motor driven by the chopper are almost sinusoidal waveforms. The motor is controlled in speed by changing ON time width T of gate signal. Moreover power spectrum of the motor driven by the chopper is calculated and measured by using Fast Fourier Transform. Consequently reduction of vibration and acoustic noise in the motor driven by the chopper is confirmed at measurement.

   AN APPROACH TO SUPPRESSION OF WIND-UP PHENOMENA IN DIGITAL SERVO DRIVE SYSTEM
By Moonhwan Kim; Masato Nakao; Kiyoshi Ohishi; Kouhei Ohnishi [View]
[Download]

Abstract: In a digital servo drive system with integral functions, the wind-up phenomena will be observed when the acceleration, or the speed, or the current etc. is over its limited value. To suppress this phenomena, it is necessary to identify the load torque and the acceleration torque of the shaft respectively, and give the priority to the support of the load. The proposed algorithm contains above two processes. First process is based on the state observer which identifies the load torque. Second process gives the maximum allowance of the acceleration torque of the motor. Not only the numerical results but also the experimental results based on the proposed algorithm show the improved performance of the digital servo drive system of the robotic manipulator.

EPE 1987 - 20 - Lecture Session 3.2: DRIVES (II)
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1987 - Conference > EPE 1987 - 20 - Lecture Session 3.2: DRIVES (II)
	[return to parent folder]

	A HIGH ACCURACY INTEGRATED DRIVE By O. Ruas; R. Letscher; J. P. Yonnet	[View] [Download]
Abstract: To obtain a compact, effective driving-package, a new speed reducer has been developed. It includes a performant Rare-earth brushless DC motor, and a resolver as a single speed and absolute position sensor. The rated power of the joint is about 50 W. It is supplied with a current fed PWM inverter, and controlled by a microprocessor. It has been successfully experimented, showing its zero backlasch and good efficiency.

	UTILITY OF MICROELECTRONICS IN POWER ELECTRONICS By J. Koulischer; J. L. Van Eck; J. M. Bodson; T. Watteyne	[View] [Download]
Abstract: This paper shows that the Application Specific Integrated Circuits will open new ways for Power Electronics designers. Their main advantages are the highly increased reliability and the reduced conception time. It is also shown how progress in microelectronics technique have reduced both time and cost developments for low volume applications.

	EVALUATION OF MAGNETIC FORCE IN INDUCTION MOTOR DRIVEN BY 20 KHz CARRIER FREQUENCY SINUSOIDAL PWM INVERTER By Toshihiro Nishimura; Toshihiko Murakami; Takeshi Inoue; Mutsuo Nakaoka; Toru Maruhashi	[View] [Download]
Abstract: This paper describes how to measure the magnetic force working in three phase induction motor driven by 20 kHz carrier sinusoidal PWM inverter and its experimental results. Voltage induced in the flux-detecting coil on all stator teeth in the motor is sent to the computer through Analog Digital converter. Moreover frequency and mode of the magnetic force are analyzed by Fast Fourier Transform. Through experimental results, the characteristics of the magnetic force in the motor driven by 20 kHz carrier sinusoidal PWM inverter are evaluated. In addition, the vibration and acoustic noise of the motor driven by 20 kHz carrier sinusoidal PWM inverter are examined and compared with those of the motor driven by a conventional inverter.

	REDUCTION OF ACOUSTIC NOISE IN INDUCTION MOTOR DRIVEN BY THREE PHASE PWM CHOPPER USING IGBT By Takeshi Inoue; Toshihiro Nishimura; Mutsuo Nakaoka; Toru Maruhashi	[View] [Download]
Abstract: Three phase PWM chopper using IGBT which chops three phase AC voltage with carrier frequency 20 KHz and controls induction motor, is proposed. Harmonic components in voltage and current waveforms do not appear within audio frequency band in this method. When each terminal of the motor are connected with capacitor 4UF, the terminal voltage and line current waveforms of the motor driven by the chopper are almost sinusoidal waveforms. The motor is controlled in speed by changing ON time width T of gate signal. Moreover power spectrum of the motor driven by the chopper is calculated and measured by using Fast Fourier Transform. Consequently reduction of vibration and acoustic noise in the motor driven by the chopper is confirmed at measurement.

	AN APPROACH TO SUPPRESSION OF WIND-UP PHENOMENA IN DIGITAL SERVO DRIVE SYSTEM By Moonhwan Kim; Masato Nakao; Kiyoshi Ohishi; Kouhei Ohnishi	[View] [Download]
Abstract: In a digital servo drive system with integral functions, the wind-up phenomena will be observed when the acceleration, or the speed, or the current etc. is over its limited value. To suppress this phenomena, it is necessary to identify the load torque and the acceleration torque of the shaft respectively, and give the priority to the support of the load. The proposed algorithm contains above two processes. First process is based on the state observer which identifies the load torque. Second process gives the maximum allowance of the acceleration torque of the motor. Not only the numerical results but also the experimental results based on the proposed algorithm show the improved performance of the digital servo drive system of the robotic manipulator.