A voice coil actuator used for positioning purposes is built as shown in Figure 5.109. Two...

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A voice coil actuator used for positioning purposes is built as shown in Figure 5.109. Two pairs of magnets produce uniform magnetic flux densities of 0.8 T in the space between each pair. In the left pair, the flux density points up whereas in the right pair it points down. A rectangular coil, 65 mm wide and 50 mm deep with N= 250 turns, is placed between the magnets, shown in its rest position centered between the mag- nets. The actuator is used to position a device (not shown) in the limits x ± 20 mm from the rest position by applying appropriate currents in the coil. Given the dimensions shown and mass of the coil m= 10 g find: (a) The velocity of the coil as a function of its position x and current I. (b) Time needed for the coil to reach its extreme position for a maximum coil current of 100 mA. (c) Maximum acceleration of the coil. Magnet 50 Magnet 50 Magnet Coil Magnet Figure 5.109 A voice coil actuator A voice coil actuator used for positioning purposes is built as shown in Figure 5.109. Two pairs of magnets produce uniform magnetic flux densities of 0.8 T in the space between each pair. In the left pair, the flux density points up whereas in the right pair it points down. A rectangular coil, 65 mm wide and 50 mm deep with N= 250 turns, is placed between the magnets, shown in its rest position centered between the mag- nets. The actuator is used to position a device (not shown) in the limits x ± 20 mm from the rest position by applying appropriate currents in the coil. Given the dimensions shown and mass of the coil m= 10 g find: (a) The velocity of the coil as a function of its position x and current I. (b) Time needed for the coil to reach its extreme position for a maximum coil current of 100 mA. (c) Maximum acceleration of the coil. Magnet 50 Magnet 50 Magnet Coil Magnet Figure 5.109 A voice coil actuator

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lets find the velocity of the coil as a function of its position x and current I Heres how we can ap... View the full answer