Shenyang Golding NC Technology Corporation

Shenyang, China

Shenyang Golding NC Technology Corporation

Shenyang, China
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Zhang X.,University of Chinese Academy of Sciences | Zhang X.,CAS Shenyang Institute of Computing Technology | Yu D.,CAS Shenyang Institute of Computing Technology | Hong H.,CAS Shenyang Institute of Computing Technology | And 2 more authors.
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | Year: 2011

In order to implement high speed and high surface quality machining of free-form surface, the smooth compression interpolation algorithm is proposed. Based on the angles and lengths evaluated from the adjacent command points, the machining path of free-form can be divided into two region types. For those regions composed of discontinuous micro-line blocks, the line interpolation is performed between the adjacent command points. For those regions composed of continuous micro-line blocks, firstly the shape-defining point is selected by the bend direction of the machining path; secondly the shape-defining points are fitted into smooth spline curve to compress blocks and smooth contours; lastly the curve interpolation is performed on the fitted smooth spline curve. The experimental results show that the proposed algorithm can improve machining efficiency and surface quality. © 2011 Journal of Mechanical Engineering.


Liu S.,University of Chinese Academy of Sciences | Liu S.,CAS Shenyang Institute of Computing Technology | Lin H.,CAS Shenyang Institute of Computing Technology | Lin H.,Shenyang Golding NC Technology Co. | And 3 more authors.
2015 IEEE International Conference on Cyber Technology in Automation, Control and Intelligent Systems, IEEE-CYBER 2015 | Year: 2015

Optical fiber communication has advantages of high transmission rate, high channel capacity, long transmission distance, and strong anti-interference ability so that it has been widely used in control and automation communication systems. Meanwhile, various topological structures are required in the different applications of optical fiber communication system. According to these demands, we propose a communication system named Frame Forwarding (FF) for Profibus in this paper. This system supports three kinds of network topologies which are liner, star and redundant ring. Especially, it could recover from link failure in redundant ring topology rapidly. It can replace traditional electronic transmission medium such as cable and has been applied to the Profibus communication system successfully. This paper introduces the design method of the communication strategy, and analysis the strategy based on application scenarios. Through the experiment, the feasibility of the Frame Forwarding system for Profibus is proved. © 2015 IEEE.


Zhao S.,University of Chinese Academy of Sciences | Zhao S.,CAS Shenyang Institute of Computing Technology | Yu D.,CAS Shenyang Institute of Computing Technology | Yu D.,Shenyang Golding NC Technology Corporation | And 3 more authors.
Zhongguo Jixie Gongcheng/China Mechanical Engineering | Year: 2013

For the traditional S curve acceleration and deceleration control methods will result in starting/stopping frequently and low machining efficiency, the linear acceleration and deceleration control methods will result in strong machine tool vibration, thus for machining micro line blocks, a lookahead algorithm was proposed based on cubic polynomial displacement incremental acceleration and deceleration control model. This algorithm divided into two stages, including program segments preprocess and real time interpolation. By linking of program segments, the planning for program segments was changed for program links during program segments preprocess stage. During real time stage, the interpolation compution was achieved by the obtained data information of program links. The machining process of some free-form surface was presented to validate the efficiency of the algorithm.


Hu Y.,CAS Shenyang Institute of Computing Technology | Yu D.,CAS Shenyang Institute of Computing Technology | Guo R.,CAS Shenyang Institute of Computing Technology | Yue D.,Hefei University of Technology | And 2 more authors.
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | Year: 2011

For the asynchronous and synchronous communication of computer numerical control (CNC) fieldbus, a message safety communication method which adopts dynamic cyclical redundancy check (CRC) upon the application layer is presented. The structure of CNC fieldbus safety message is proposed, and safety communication method based on dynamic CRC check and algorithms are deeply researched. And then mathematic method and experimental tests are adopted to compare the performances of the new and traditional methods. The results prove that the new method can meet the real-time performance, reduce residual error rate obviously, achieve the requirement of message integrity rating completely, and be more suitable for the application of message safety communication in CNC fieldbus. © 2011 Journal of Mechanical Engineering.


Wang Z.,University of Chinese Academy of Sciences | Wang Z.,CAS Shenyang Institute of Computing Technology | Yu D.,CAS Shenyang Institute of Computing Technology | Zhang X.,CAS Shenyang Institute of Computing Technology | Zhang G.,Shenyang Golding NC Technology Co.
Zhongguo Jixie Gongcheng/China Mechanical Engineering | Year: 2010

Based on the analysis of NC system's communication net architecture and characteristics, a new time synchronization protocol was proposed. Using this protocol, mechanism of time synchronization was designed, which included communication model, communication timing, method of master schedule and slave real-time data exchange. The mechanism was successfully used into field-bus of NC system. The experimental results show its good synchronous precision. So it can meet the requirements of NC system's applications.


Li P.,University of Chinese Academy of Sciences | Ma Y.,CAS Shenyang Institute of Computing Technology | Yu D.,CAS Shenyang Institute of Computing Technology | Wang Z.,University of Chinese Academy of Sciences | And 2 more authors.
Zhongguo Jixie Gongcheng/China Mechanical Engineering | Year: 2011

Based on the study of contour error calculation methods detailed, a novel approach for estimating the contour errors in real-time was proposed for the requirements of real-time task in high-end CNC. This method solved the problems which, for free-form curve, the contour error calculation process is complex and needs large computations. Experimental results for a biaxial motion system show that the proposed approach has very small amount of computation and owns very high calculation accuracy in real-time tasks and it can guide the selection of the current control parameters and observe the control effects of the contour errors.


Wang Z.,University of Chinese Academy of Sciences | Wang Z.,CAS Shenyang Institute of Computing Technology | Yu D.,CAS Shenyang Institute of Computing Technology | Zhang X.,University of Chinese Academy of Sciences | And 3 more authors.
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | Year: 2011

Field-bus application is an inevitable development trend of numerical control (NC) system. In order to meet the NC system's high demand for reliable communication, based on the analysis of relationship between machining accuracy of NC system and reliable communication, a reliable communication mechanism of field-bus is designed. For this mechanism, an evaluation indicator for the communication reliability of NC system is established, and it is proposed that the fault-free communication time is used to measure the reliability of field-bus communication. Then by using the probability statistics method, mathematical analysis of the mechanism reliability is carried out, and the relation between the field-bus communication reliability and the number of communication stations and the maximum times of retransmissions is obtained, and their respective influence degree is analyzed. Simulation experiments verify the correctness of the theoretical analysis results, and the effectiveness of reliable communication mechanism applied to NC system is proved through the actual electromagnetic interference testing. The theoretical study and experimental result have important guiding role in reliability design and analysis of NC system communication. ©2011 Journal of Mechanical Engineering.


Zhang X.,University of Chinese Academy of Sciences | Zhang X.,CAS Shenyang Institute of Computing Technology | Yu D.,CAS Shenyang Institute of Computing Technology | Yang D.,CAS Shenyang Institute of Computing Technology | And 3 more authors.
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | Year: 2010

The existing micro-line block interpolation algorithm can not meet the need of high speed machining. Through building the vector model of corner curve transition, the relation between contour machining accuracy, adjacent line segment length and included-angle, transition curve arc length and maximum curvature is given. Based on them, a micro-line segment interpolation algorithm based on corner curve transition is proposed. According to this algorithm, the transition curve parameterized by path distance is used to connect adjacent micro-line segment with continuous curvature. At the same time, the maximum allowable velocity limited by chord error and mechanical property of machine tool is calculated and automatically adjusted. So the machining efficiency can be improved while the machining accuracy and quality ensured. The experimental results show that the proposed algorithm can efficiently improve transition speed and dramatically reduce machining time. It is successfully applied in NC systems of high speed engraving and milling machines. © 2010 Journal of Mechanical Engineering.


Gao T.,University of Chinese Academy of Sciences | Yu D.,CAS Shenyang Institute of Computing Technology | Yue D.,Anhui University of Science and Technology | Hu Y.,Shenyang Golding NC Technology Co.
Proceedings of 2010 IEEE/ASME International Conference on Mechatronic and Embedded Systems and Applications, MESA 2010 | Year: 2010

In traditional CNC systems, dense software-hardware design and inappropriate data interactive mode can not balance the computational capability and communication load. In order to increase the interoperability level of communication platform in CNC and alleviate resource competition, a kind of network architecture was proposed in this research. A resource-consumption and low coupling module was separated to reduce the processor burden. Real-time Ethernet (RTnet) was used for communication between remote modules to decrease network delay. Linux Real Time mechanism (LXRT) was adopted to ensure real-time performance of modules in user space. A hybrid interactive model instead of shared memory was presented to improve data interaction between local modules. A prototype system was developed and three comparative experiments based on it were carried out. © 2010 IEEE.


Yue D.,Anhui University of Science and Technology | Yu D.,Shenyang Golding NC Technology Co. | Gao T.,University of Chinese Academy of Sciences | Hu Y.,University of Chinese Academy of Sciences
Proceedings of the World Congress on Intelligent Control and Automation (WCICA) | Year: 2010

Safety, in automation industrial systems, is a new subdomain, but is receiving attention rapidly. To achieve high production efficiency and to curtail downtime in such systems, there must be appropriate intelligent mechanism in them at the architectural level. This paper presents an intelligent controller architecture that relies on the adjustable speed induction motor drives for safety systems in the automatic industry. The proposed intelligent controller architecture can greatly curtail downtime through its unique functions when detects unsafe conditions, as it reduces the speed of axes to an acceptable safe value, instead of removing the power. The proposed architecture adjusts the tradeoff between safety and efficiency and exhibits the ability to deal with a variety of abnormal signals effectively. The applicability of proposed architecture is demonstrated with a case study. © 2010 IEEE.

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