Precise position synchronous control of multi-axis servo system

Jeong, Seok–Kwon; You, Sam–Sang

doi:10.1016/j.mechatronics.2007.10.009

Cited by 57 publications

(31 citation statements)

References 4 publications

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“…The friction torque was added to the system as an experimental curve function of the speed of the ball screẇ 3 . By measuring the torque-generating current for different constants speeds, Figure 6 was generated.…”

Section: Model Identificationmentioning

confidence: 99%

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Sensitivity Analysis of the Transmission Chain of a Horizontal Machining Tool Axis to Design and Control Parameters

Mauro

Pastorelli

Mohtar

2014

Advances in Mechanical Engineering

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This paper reports how a numerical controlled machine axis was studied through a lumped parameter model. Firstly, a linear model was derived in order to apply a modal analysis, which estimated the first mechanical frequency of the system as well as its damping coefficients. Subsequently, a nonlinear system was developed by adding friction through experimentation. Results were validated through the comparison with a commercial servoaxis equipped with a Siemens controller. The model was then used to evaluate the effect of the stiffness of the structural parts of the axis on its first natural frequency. It was further used to analyse precision, energy consumption, and axis promptness. Finally a cost function was generated in order to find an optimal value for the main proportional gain of the position loop.

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Section: Model Identificationmentioning

confidence: 99%

“…Sato [2] also proposed and validated a model of a rotary table with a worm gear. Jeong and You [3] studied the position synchronous control of a multiaxis servo system without hard couplings. To do so a model of the motor drive was formulated using circuit equations and Newton's laws.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis of the Transmission Chain of a Horizontal Machining Tool Axis to Design and Control Parameters

Mauro

Pastorelli

Mohtar

2014

Advances in Mechanical Engineering

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“…Furthermore, the load capacity is restricted owing to the limit of the power and torque of single servo motor. The DDFS is used on high-end industrial applications such as surface chip mounting, precision metrology, and high-speed and heavy load manufacturing [1]. Since the joint force is provided by twin motors and screws, the system rigidity would be significantly increased, and double overall thrust would afford to drive the stage.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics Analysis and Test of Dual-Driving Feed System Driven by Center of Gravity

Lü

Fan

Zhang

et al. 2018

Mathematical Problems in Engineering

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Dual-driving feed system (DDFS) driven by center of gravity (DCG) has been widely used in advanced manufacturing machine for its high rigidity and precision. However, the DCG technology requires that the joint force coincides with the center of gravity of the sliding stage. The dual-driving synchronization and tracking performance will be affected by the change of center of gravity of the sliding stage. Therefore, this paper proposes dynamic characteristics modeling, identification, and control scheme for DDFS driven by center of gravity (DCG). Firstly, a redundancy dynamic model including rotation and pitch vibration caused by the change of the position of center of gravity is presented for DDFS DCG based on the Lagrange method. The model parameters are identified by system identification experiment, and the predictive natural frequencies and vibration modes by the proposed dynamic model are compared by modal experiment. Moreover, the dynamic model-based cross-coupled sliding mode control (CCSMC) is proposed for DDFS DCG. Then, the proposed dynamic model-based CCSMC has been compared with normal cross-coupled sliding mode control (NCCSMC). Both the simulation and experimental results show that the proposed dynamic characteristics analysis and test scheme of DDFS DCG are validated effectively by comparisons.

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“…To achieve the precise position synchronous control in Ref. [10], acceleration and speed controllers were designed via the PI control law and the maximum error comparison scheme was developed to reduce the position synchronous errors. This control system was complex and needed system dynamic information.…”

Section: Introductionmentioning

confidence: 99%

Amplitude phase control for electro-hydraulic servo system based on normalized least-mean-square adaptive filtering algorithm

Yao

et al. 2011

J. Cent. South Univ. Technol.

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The electro-hydraulic servo system was studied to cancel the amplitude attenuation and phase delay of its sinusoidal response, by developing a network using normalized least-mean-square (LMS) adaptive filtering algorithm. The command input was corrected by weights to generate the desired input for the algorithm, and the feedback was brought into the feedback correction, whose output was the weighted feedback. The weights of the normalized LMS adaptive filtering algorithm were updated on-line according to the estimation error between the desired input and the weighted feedback. Thus, the updated weights were copied to the input correction. The estimation error was forced to zero by the normalized LMS adaptive filtering algorithm such that the weighted feedback was equal to the desired input, making the feedback track the command. The above concept was used as a basis for the development of amplitude phase control. The method has good real-time performance without estimating the system model. The simulation and experiment results show that the proposed amplitude phase control can efficiently cancel the amplitude attenuation and phase delay with high precision.

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Precise position synchronous control of multi-axis servo system

Cited by 57 publications

References 4 publications

Sensitivity Analysis of the Transmission Chain of a Horizontal Machining Tool Axis to Design and Control Parameters

Sensitivity Analysis of the Transmission Chain of a Horizontal Machining Tool Axis to Design and Control Parameters

Dynamic Characteristics Analysis and Test of Dual-Driving Feed System Driven by Center of Gravity

Amplitude phase control for electro-hydraulic servo system based on normalized least-mean-square adaptive filtering algorithm

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