| 摘要 |
<p>A compound pneumatic valve (15) of the bang-bang, spool type; electro-mechanically driven by a pair of face type opposing solenoids which in turn are driven by a pulse width modulator signal. First and second cylinder ports (25, 26) are alternatively pressurized and vented through asymmetrical slot style ports (21a, 22a) to function in the two horsepower range having bandwidths of 30 to 45 Hz.</p> |
