Applied Mechanics and Materials Vols. 457-458

Abstract: In order to improve the performance of the converter for restrain the machine-side PWM rectifier load disturbance impact on the output DC voltage in direct-drive wind power system. A hybrid control strategy based on ADRC and the EL model was presented, using ESO to observe and compensate the load disturbances, achieving voltage outer control by ADRC method and comparing with PI control. However, as to grid-side PWM inverter, energy shaping method which based on PCHD model and the IDA-PBC control algorithm is adopted to design passivity-based controller, which is able to make the energy function have the minimum value when inverter is at the desired point, thus improving the stability and the load disturbance-rejection ability for the inverter. Simulation results show that the machine-side PWM rectifier can make the currents and voltages of AC side achieve synchronous, DC voltage can fast-track desired values; grid-side PWM inverter can achieve unity power factor and make the AC current sinusoidal.

Abstract: UPFC is one of the flexible ac transmission system (FACTS) compensation devices, it has a comprehensive compensation function, UPFC has the characteristic functions as follows: fast anddynamical adjusting the parameters of electricity transmission system, such as voltage, impedance, phase angle, active power and reactive power, expanding thecapacity of electricity transmission, improving the stability of power system and optimizing the operation of power system.So it is a perfect fashion for active and reactive power controller, and also it has the function of regulating voltage.

Abstract: With the development of modern industry, manual labor has been far from meeting the needs of modern industry. In recent years,with the development of artificial intelligence algorithms and other related field. Machine vision has been applied in a wide field of industry. An overview of key machine vision system, and demonstrates some machine vision applications will be proposed in this paper.

Abstract: Automatic production line includes machinery, electric, control, communication and other multi-disciplinary technologies and knowledge. It is an ideal training platform for students majored in mechatronics and electric automation. In the designing of platform, however, the difficulty lies in the precise delivery and position control of linear guide rail system. To address this problem, this paper aims at designing an AC servo-control system based on PLC, AC servo driver, servo motor and human-machine interface (HMI) and elaborates the principle of servo-control system, circuit design and software design. The system will achieve reliable delivery and precise positioning with position error less than 1 mm, which, with great application value, will meet the actual demand from industrial production.

Abstract: The distribution of working pressure in CCOS has been studied when the polishing disc frayed. Combined with the planetary motion, the working functions at wear and ideal states were calculated separately, the result shows that the function peak is higher at wear state and it is a convex curve instead of a concave curve at ideal state. The impact of different wear loss on the working function has been also studied in this paper, one preliminary conclusion has been obtained that with the increasing of the wear loss, the working function peak will get higher and sharper, and the effective range of processing will decrease meanwhile. It can be predicted that although the removal rate may not change obviously at the initial stage of wear, the processing quality may decrease and the processing stability will be worse since the variation of the removal distribution.

Abstract: This paper presents an embedded controller of low cost and high performance for industrial robot. The ARM microprocessor is chosen as the main controller for the processor. Based on the 7-segment cubic spline interpolation algorithm, a real-time control for the robot is implemented. This proposed trajectory method can perfectly generates speed S-curve shape for a start-stop process of the robot. In this article a programming language, G-code, is developped for the robots motion control by using the editing interface we designed specially on PC platform. With all the features for 2-4 degree of freedom robot application, the editing interface has been developed for editing and compiling G-code, which can be downloaded into the microprocessor with the custom communication protocol through communication interface. The programming method of the G-code language is easy to learn and use for the non-professional users. The paper describes the design and implementation in detail for the controller, which was validated on our designed SCARA robot, and it worked reliably.

Abstract: The brushless DC motor (BLDCM) which is a kind of mechatronics products has many features, such as light weight, small volume, little inertia, high efficiency, easy to be controlled, and so on. BLDCM reserves many excellent mechanical characteristics of other ordinary DC motor which can be widely used in servocontrol, numerical control machine and robot etc. It is very significant to study a control system with quick response, powerful regulation capability and high precision. In this paper, the basic operation principle, composing parts, running characteristic and transfer function of BLDCM are discussed. Hardware part and software part of the system according to the preceding solutions are realized. As opposed to the conventional controller, the system has a better static, dynamic performance, and has a strong adaptability in changes of the parameters and the load disturbance, and achieves good control effect.

Abstract: It is broadly recognized by global companies that information sharing is one of the key aspects of coordination amongst parties in a supply chain. Companies can efficiently manage the product flow and information related to the issues such as production capacity, customer demand and inventory at lower costs through information sharing. Different incentive mechanisms were presented to tackle the complexities in information sharing. However, the relation between different incentive mechanisms and the performance measures of supply chain is not yet developed. The objectives of this paper are to: understand and appreciate various incentive mechanisms available for information sharing in supply chain, propose a holistic model to explore different incentive mechanisms both quantitative and qualitative and their value in supply chain.

Abstract: Affective design, which aims to design favorable products that meet the customers affective needs and address customers affective satisfaction, has gain increasing attention in modern industries. This paper proposed an affective design approach combing random forest regression and association rule mining, where random forest is adopted to reduce the dimension of design elements and association rules is used to map the affective need to design element. The efficiency of the method is demonstrated by an application of elevator design.

Abstract: Supply chain management is a multi-level, multi-objective system engineering. With the continuous development of supply chain for the survival in the market environment, the core task of supply chain management is also changing, Enterprises will face the new environment of e-commerce with the implementation of supply chain management. E-commerce create new opportunities for the supply chain management. Meanwhile, it also presents new challenges to the supply chain management. So, SCE must make the corresponding adjustment and reconstruction according to the E-commerce environment. This paper discussed the steps of supply chain design based on e-commerce environment. The purpose of this is to maximize the efficiency of logistics, information flow and capital flow and to achieve the ideal supply chain finally.