| 摘要 |
<p>A permanent magnet electric valve and a control system thereof are provided, the permanent magnet electric valve includes a case(1), an upper fixed core(9) and a winding thereof, a lower fixed core(8) and a winding thereof, a valve body(7), a permanent magnet movement block(3) and a linear bearing(6). The permanent magnet movement block(3) is fixed to the valve body(7) between the two cores. Attraction force and repulsion force are produced by the magnetic forces between the permanent-magnet movement block(3) and the two cores and their windings to make the permanent-magnet movement block(3) and the valve body(7) move up and down between the two cores. The control system consists of the winding for the valve, a signal detecting module(21), a signal processing module(22) and one way bridge variable current driving circuit(Q); the signal processing module(22) receives and deals with the signal detected by the signal detection module(21) and generates the pulse triggering driving signal(Q), so as to control in turn the one way bridge variable current driving circuit to alternately switch the current for the intake valve and exhaust valve per cylinder in gas distribution apparatus in engine.</p> |
