Speed Control of Pneumatic Cylinder by a Microcontroller

In engineering practice we often use pneumatic cylinders, motors, actuators. Popularity of these instruments is understandable, since fast and clean, isn’t an electromagnetic compatibility trouble, and can be used in potentially explosive environments. A disadvantage of undetermined speed of movement can be mentioned, which is coming from the dynamic characteristics of the air is generally difficult to handles. In the present paper we present such a solution, which can be achieved by using an embedded micro-controller with a special pulse width modulation control (PWM) which the pneumatic actuators velocity is controllable

Mobility analyses with pattern co-relation

The physical state of people working in dangerous environment or ill ones is important to be monitored and analyzed. For such an investigation a typical parameter is the heartbeat rhythm, the ECG, the saturation of oxygen and breathing. Defining the body mobility state as well as its position may be also of the same importance. In order to achieve this microprocessor data storage device is used, which stores the 3D velocity sensor signal. The momentary velocity, acceleration and position can be defined from these accumulated data. By the help of co-relation calculus, from a sample database an approach of the character of mobility can be determined

Delta-convexity, metric projection and negligible sets.

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