EPE Association: EPE 2001 - Topic 07a: Servo Drives; Stepping, Linear and Brushless Drives

EPE 2001 - Topic 07a: Servo Drives; Stepping, Linear and Brushless Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2001 - Conference > EPE 2001 - Topic 07: MOTION CONTROL AND ROBOTICS > EPE 2001 - Topic 07a: Servo Drives; Stepping, Linear and Brushless Drives

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   A New Linear Drive with Extreme Dynamic Performance and High Thrust
By P-K. Budig; R. Werner [View]
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Abstract: There was a demand for a linear drive with the following performance data: way of motion less 20 mm, time of motion less 20 ms, maximum accelleration 4 000 m/s², maximum thrust 42 000 Newton. It was the task to design the electromagnetic actuator and the control electronics as well. The first one has a moving coil with extremely low weight. It is in an cylindrical air gap in which there is a flux- density of 1 Tesla. This field is made by two rings of high- energy permanent magnets. Since the power demand is about 450 kW the power- supply comes from 5 capacitor- banks working in parallel. The current rise rate is 2 000 A / ms.

   ANN-Based Current Controlled BLCD Servo-Motor
By A. M. Zaki; S. I. Amer [View]
[Download]

Abstract: The stator currents of the brushless dc (BLDC) motor are controlled to control the torque of the motor using the rotor position signal. For many applications, the load torque varies along the motor position trajectory such as for robotic applications. In this paper, an online control strategy is proposed for nonlinear brushless dc motors operating in a high-performance drives environment. The proposed control strategy possesses the capabilities of simultaneous online control. The first goal is to control the speed and position of the rotor, while the second goal is to control the components of the stator current. The control action is implemented in such a way that system trajectories follow a predetermined reference track.

   Friction Compensation Based On Reset Integrator Friction Model
By A. Bozic; D. Pavkovic; J. Deur; N. Peric [View]
[Download]

Abstract: This paper focuses on friction compensation based on simple dynamical ‘reset-integrator’ friction model. Due to its simplicity, it is numerically efficient and therefore desirable for implementation in control algorithms. Main topic of this paper is the proposed method for identification of friction model parameters. The proposed method is experimentally verified on a laboratory servosystem.

   High-power servo drives for application on high-voltage circuit breake
By S. Bosga; P. Kjaer; S. Valdemarsson; F. Magnussen [View]
[Download]

Abstract: This paper presents a series of extremely high-power servo drives for application on high-voltage circuit breakers. With a peak shaft power ranging from 15 to 500 kW and acceleration around 50g, these drives are able to successfully replace the traditional circuit-breaker operating mechanisms. The very special features and performance of the new drives provide a reliable and cost-effective solution, with built-in diagnostic features. In contrast to traditional servo drives, the breaker drives are designed for extreme peak power and short duty operation. Using a special motor design, the required high peak power and energy can be delivered to the load in a cost effective way. The control system of the drive ensures precision control over the motion curve of the breaker contacts. It allows advanced monitoring of the breaker’s performance over time, providing detailed information on each breaker operation. The servo drive thus not only replaces the traditional mechanical operating mechanisms, but also eliminates the need for additional measurement equipment.

   Position Accuracy Determination of a Linear BL Drive System
By E. Bassi; F. Benzi; C. Bianchi [View]
[Download]

Abstract: The paper presents the results of an accuracy study for a permanent magnet brushless linear motor drive system. Two aspects are considered: i) investigation related to the system accuracy issue, in terms of static and dynamic trajectory error; ii) identification and measurement of the drive parameters in order to compensate for disturbing torques. Experimental tests accompany a short review of a few issues related to the linear drive application for industrial automation.

EPE 2001 - Topic 07a: Servo Drives; Stepping, Linear and Brushless Drives
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2001 - Conference > EPE 2001 - Topic 07: MOTION CONTROL AND ROBOTICS > EPE 2001 - Topic 07a: Servo Drives; Stepping, Linear and Brushless Drives
	[return to parent folder]

	A New Linear Drive with Extreme Dynamic Performance and High Thrust By P-K. Budig; R. Werner	[View] [Download]
Abstract: There was a demand for a linear drive with the following performance data: way of motion less 20 mm, time of motion less 20 ms, maximum accelleration 4 000 m/s², maximum thrust 42 000 Newton. It was the task to design the electromagnetic actuator and the control electronics as well. The first one has a moving coil with extremely low weight. It is in an cylindrical air gap in which there is a flux- density of 1 Tesla. This field is made by two rings of high- energy permanent magnets. Since the power demand is about 450 kW the power- supply comes from 5 capacitor- banks working in parallel. The current rise rate is 2 000 A / ms.

	ANN-Based Current Controlled BLCD Servo-Motor By A. M. Zaki; S. I. Amer	[View] [Download]
Abstract: The stator currents of the brushless dc (BLDC) motor are controlled to control the torque of the motor using the rotor position signal. For many applications, the load torque varies along the motor position trajectory such as for robotic applications. In this paper, an online control strategy is proposed for nonlinear brushless dc motors operating in a high-performance drives environment. The proposed control strategy possesses the capabilities of simultaneous online control. The first goal is to control the speed and position of the rotor, while the second goal is to control the components of the stator current. The control action is implemented in such a way that system trajectories follow a predetermined reference track.

	Friction Compensation Based On Reset Integrator Friction Model By A. Bozic; D. Pavkovic; J. Deur; N. Peric	[View] [Download]
Abstract: This paper focuses on friction compensation based on simple dynamical ‘reset-integrator’ friction model. Due to its simplicity, it is numerically efficient and therefore desirable for implementation in control algorithms. Main topic of this paper is the proposed method for identification of friction model parameters. The proposed method is experimentally verified on a laboratory servosystem.

	High-power servo drives for application on high-voltage circuit breake By S. Bosga; P. Kjaer; S. Valdemarsson; F. Magnussen	[View] [Download]
Abstract: This paper presents a series of extremely high-power servo drives for application on high-voltage circuit breakers. With a peak shaft power ranging from 15 to 500 kW and acceleration around 50g, these drives are able to successfully replace the traditional circuit-breaker operating mechanisms. The very special features and performance of the new drives provide a reliable and cost-effective solution, with built-in diagnostic features. In contrast to traditional servo drives, the breaker drives are designed for extreme peak power and short duty operation. Using a special motor design, the required high peak power and energy can be delivered to the load in a cost effective way. The control system of the drive ensures precision control over the motion curve of the breaker contacts. It allows advanced monitoring of the breaker’s performance over time, providing detailed information on each breaker operation. The servo drive thus not only replaces the traditional mechanical operating mechanisms, but also eliminates the need for additional measurement equipment.

	Position Accuracy Determination of a Linear BL Drive System By E. Bassi; F. Benzi; C. Bianchi	[View] [Download]
Abstract: The paper presents the results of an accuracy study for a permanent magnet brushless linear motor drive system. Two aspects are considered: i) investigation related to the system accuracy issue, in terms of static and dynamic trajectory error; ii) identification and measurement of the drive parameters in order to compensate for disturbing torques. Experimental tests accompany a short review of a few issues related to the linear drive application for industrial automation.