Height-adjusting sandal.

Adaptive height adjusting strategy research of shearer cutting drum

Shearer height adjusting is a key technology for shearer automation. Considering constraints of present shearer height adjusting, this paper built grey-markovian memory cutting algorithm after analyzing traditional shearer memory cutting algorithm. We firstly constructed prediction mechanism using grey model, then determined state transition probability matrix using markovian, so as to revise f...

Sliding Mode Robustness Control Strategy for Shearer Height Adjusting System

This paper firstly established mathematical model of height adjusting hydro cylinder of the shearer, as well as the state space equation of the shearer height adjusting system. Secondly we designed a shearer automatic height adjusting controller adopting the sliding mode robustness control strategy. The height adjusting controller includes the sliding mode surface switching function based on Ac...

Ergonomics: Requirements for Adjusting the Height of Laparoscopic Operating Tables

BACKGROUND AND OBJECTIVES In the last few years many new instruments and devices have been developed and introduced into the operating room (OR). A debate has been ongoing about the optimal ergonomic posture for the operating staff. From practical experience, we have learned that the operating tables cannot be adjusted adequately to allow surgeons of different stature to maintain a comfortable ...

3. in Situ Detection of Sandal Spike Phytoplasma 3. in Situ Detection of Sandal Spike Phytoplasma

Sandal types and Archaic prehistory on the Colorado Plateau.