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1. VOICE COIL The voice coil is relatively short so that it remains within the magnetic gap even during peak excursions.

2. The model of voice coil motor and optical pickup unit are analyzed, the model parameters are tested, the model of DVD focus servo system is built and the simulation is carried out.

3. Voice coil motor is characterized by being of high acceleration, high speed, smooth force, fast response, small-volume, light-weigh.

4. The Voice coil is a part of HSA, Voice coil and the magnets form Voice Coil Motor or VCM.

5. Next chip is Voice Coil Motor controller or VCM controller.

6. The voice coil motor(VCM) in high bandwidth actuator assembly has special voice coil construction and magnet arrangement.

7. The MF voice coil is of copper-coated aluminium ribbon, expensively edge-wound over a polyimide former to increase sensitivity by maximising the amount of copper in the magnet gap.

8. According to the closed-loop performance of voice coil motor, a controller is designed through an inverse design method based on the optimal 2-order property of ideal closed-loop.

9. The mathematical model of voice coil motor was presented by analyzing the principle of motor, and the fuzzy reasoning method was used to regulate PID parameters.

10. Apply to air-core self-adhesive coil, voice coil winding, Control interface with personalized, high-precision mechanical structure, rapid response to the control drive unit.

11. This meter measures the temperature of a speaker voice coil (copper or aluminum) during operation, and indicates the result on two digital meters.

12. This thesis mainly discusses the application of voice coil motor (VCM) in the RFID tags package equipment, and research on different control methods of VCM in different processes.

13. The function of voice coil motor in the flip chip process is to complete three movements: pick, orient and place.

14. In the first two movements, the patch head which is fixed on the shaft of voice coil motor do not need to press the chip, so the control method is mainly position control.

15. Two direct drive motors integrated with high resolution encoders and linear voice coil motor are used as driving parts.

16. Technical refinements for Grado drivers include improved diaphragm and voice coil design for increased bass response and a larger perceived sound stage.

17. A fuzzy PID controller with parameters self-tuning was designed and applied to oscillating mirrors driven by voice coil motors.

18. This paper presents a novel way of laser beam steering based on micro lens array and driven by voice coil actuator.

19. As electrical current from the radio passes from the connector through the voice coil, it creates a varying Magnetic field that interacts with the permanent magnet's field.

20. A control loop model for fast-steering mirror driven by voice coil motor is established and practical object parameters have been identified by this model.

21. CCD image-edge detection method was applied to measure the static character of the tracing system of voice coil motor(VCM) in DVD laser pickup head.

22. With high-power and LF combination, large magnetic cylinder unit is adopted for bass, high-temperature-resisting voice coil material and paper cone, abundant low frequency effect can be obtained.

23. Loudspeaker: also speaker, the part of the speaker that converts electrical into mechanical energy is frequently called the motor, or voice coil.

24. Ferrofluid is a conductive lubricant used for over 30 years in the speaker industry in the magnetic gap of the voice coil assembly.

24. Sentencedict.com try its best to gather and build good sentences.

25. As to layer selection, the system just need to control one voice coil motor.

26. A mechanical structure for fast-steering mirror (FSM) driven by voice coil motor (VCM) is analyzed and its mathematical model is established from the analysis.

27. This testing machine link up high speed response with low testing time because we use voice coil motor to substitute for traditional mechanical design in the aspect of reciprocal mechanism.

28. An air decoupling mechanism was designed to place the voice coil actuators on the base and effectively reduce the motion inertia.

29. Requirements for the principals and development of precise light beam steering and focus equipments which use piezoelectric or voice coil actuators.

30. A Fast-steering Mirror(FSM) with a spherical pair supporting structure driven by linear voice coil actuators was designed to control the transmission direction of a laser precisely.