Abstract: A non-sensor type closed-loop stabilization control algorithm comprises the following steps: 1, reading all voltages Vk?1 and currents Ik?1 for driving a multi-axis stabilization motor; 2, calculating and outputting all coil resistances Rk?1 in the multi-axis stabilization motor; 3, reading all the coil resistances, voltages and currents in the steps 1 and 2, and calculating and outputting counter electromotive force Ek?1 of all the coils in the multi-axis stabilization motor; 4, reading an stabilization compensation angle ?k, each coil resistance and the counter electromotive force, and calculating and outputting a closed-loop stabilization control Fk; and 5, then waiting for a time step k=k+1, and repeating the steps in the steps 1 to 4. It aims to add a closed-loop control element to a motor without a sensor to achieve an excellent stabilization effect and to reduce the risk of image blurring caused by resonance.

Abstract: A magnet arrangement structure suitable for a voice coil motor is provided by the present invention, comprise a magnet holder and a coil holder coaxial with the magnet holder, wherein 2n groups of magnets are provided on the magnet holder, each group of magnets is symmetrically provided around a central axis of the magnet holder, each group of magnets comprises at least one magnet, and each magnet has two magnetic poles; the surfaces facing the central axis of each group of magnets comprise two different magnetic poles, and each magnetic pole is opposite to the magnetic pole; and each group of magnets also corresponds to a coil. Compared with the traditional art, the magnetic field intensity passing through the coil can be improved, power consumption is reduced, electromagnetic force is increased, and the benefits of reducing weight, cost and size of the motor are achieved.

Abstract: A non-sensor type closed-loop stabilization control algorithm comprises the following steps: 1, reading all voltages Vk?1 and currents Ik?1 for driving a multi-axis stabilization motor; 2, calculating and outputting all coil resistances Rk?1 in the multi-axis stabilization motor; 3, reading all the coil resistances, voltages and currents in the steps 1 and 2, and calculating and outputting counter electromotive force Ek?1 of all the coils in the multi-axis stabilization motor; 4, reading an stabilization compensation angle ?k, each coil resistance and the counter electromotive force, and calculating and outputting a closed-loop stabilization control Fk; and 5, then waiting for a time step k=k+1, and repeating the steps in the steps 1 to 4. It aims to add a closed-loop control element to a motor without a sensor to achieve an excellent stabilization effect and to reduce the risk of image blurring caused by resonance.