Fig. 1. The exoskeleton for knee support. trol system for a powered orthosis is presented. The orthosis (as shown in Fig. 1) is used to support the thigh muscles during flexion and extension of the knee while performing common motions like getting up from a chair, walking, or climbing stairs. The user interface of the control system is implemented by evaluating EMG signals from significant thig...

Abstract The powered roof support is mainly used in natural hazard conditions. Natural hazards Polish mining include methane hazards, gas and rock ejections, coal dust explosions, climate water landslides, eruptions, hydrogen sulphide radioactive substances mass tremors. latter has a significant impact on the operation of support. work analyses tremor risks last ten years. study showed an inten...

The paper considers the advisability of continuous nonimpact regulation powered support unit hydraulic props resistance to roof rock subsidence. It also examined increasing adaptability within advanced high-powered mechanized longwall face complexes mining-geological conditions that change as blocks are extracted. A four-level characteristic with is proposed instead a typical three-level operat...