Question

msu Q3. A high-speed proportional solenoid valve is shown in Figure 2.Avoltage proportional to the desired position of the spool is applied to the coil. The resulting magnetic field produced by the current in the coil causes the armature to move. A push pin connected to the armature moves the spool. A linear voltage differential transformer (LVDT) that outputs a voltage proportional to displacement senses the spool's position. This voltage can be used in a feedback path to implement closed-loop operation (Vaughan, 1996). Draw a functional block diagram of the valve, showing input and output positions, coil voltage, coil current, and spool force (20 marks) Return Sleeve spring Nonmagnetic r section VPressure tube Spool Coil Rearings Amature LVDT Figure 2 ial

Answer 1