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  • Bohui Pang
  • 2007 International Conference on Mechatronics and…
  • 2007
In order to ensure the uninterrupted supply of items, the suppliers' performance needs to be evaluated periodically. The evaluation process typically consists of identifying the attributes and factors relevant to the decision, and measuring the performance of a supplier by considering the relevant factors. But the evaluation process is complex. Linguistic(More)
  • Bohui Pang
  • 2006 International Conference on Mechatronics and…
  • 2006
Competitive advantage is often determined by the effectiveness of an organization's supply chain, and as a result, the evaluation and selection of suppliers has become an increasingly important management activity. But the evaluation process is complex. The data that must be considered are both technical and social/organizational. Much of the data are(More)
Nano-positioning systems using piezoelectric stack actuator have a very wide range of applications including ultra-precision machine tools, diamond turning machines and motion stage. However, loss of tracking positioning precision in piezoelectric actuator occurs due to hysteresis during long range applications and creep effects when positioning is needed(More)
  • Bohui Pang
  • 2008 4th International Conference on Wireless…
  • 2008
In order to ensure the uninterrupted supply of items, the suppliers' performance needs to be evaluated periodically. But the evaluation process is complex. Linguistic assessment of suppliers may be carried out based on several criteria. Much of the data are difficult to obtain and ambiguous or vague to interpret. In this paper, a model based on the AHP and(More)
  • Bohui Pang
  • 2009 International Conference on Computational…
  • 2009
This paper develops a supplier evaluation approach based on the analytic network process (ANP) and fuzzy synthetic evaluation under a fuzzy environment. The importance weights of various criteria are considered as linguistic variables. These linguistic ratings can be expressed in triangular fuzzy numbers by using the fuzzy extent analysis. Fuzzy synthetic(More)
Due to the inherent hysteresis nonlinearity, the piezoelectric actuator always causes positioning error in the open-loop operation and instability in the closed-loop operation. In order to improve the positioning accuracy and response speed, a control method for piezoelectric actuator based on a PID feedback controller with a feedforward compensation is(More)
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