Abstract
A measurement technique had been developed to detect the variation of vane space pressure in a pneumatic vane motor during time. The investigated motor is a small dimensions and high speed one, and due to these characteristics it can be used in robotics. To evaluate instantaneous pressure a piezoresistive pressure transducer had been fitted in the driver rotor and during tests it rotates with the rotor. Being the motor dimensions reduced, it can rotate at a very high speed, consequently the pressure frequency is very high. A pressure frequency telemetric system had been used to transmit the pressure data from the rotor parts to the static ones. In this way we have not a cable transmission but a radio transmission from the rotor to the static parts. Results obtained from an extensive series of experimental tests carried out in laboratory in various operating configurations are presented.
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