Introduction voice coil linear motor, also known as the Lorenz machine, galvanometer motors, its structure is similar to the speaker voice coil is named, is a response to the frequency of the fastest growing direct-drive motors, voice coil motor has zero magnetic hysteresis, zero magnetic cogging, high frequency response, high precision, high acceleration, speed, power characteristics, easy to control, small size, and resolution infinitely small, etc., in foreign countries, the voice coil motor is considered to be a near perfect The servo drive. The drive, feedback, controllers and control algorithms configuration level, the voice coil motor movement frequency 500-1000Hz generally can be reached even higher. A voice coil motor having a cylindrical, rectangular, swing angle which is common, but the voice coil motor according to the special structure of the magnet as part of your case, or to another location on the coil, or the coil into another form, the shape of the magnet into a special structure, are achievable. Often, we put the voice coil motor unable to extricate themselves confined within this range, the voice coil motor according to your requirements, to improve, we can have a perfect solution among themselves. Works Its basic principle is that current-carrying conductor passes through a magnetic field, will generate a force perpendicular to the magnetic field lines, the size of this force depends on the strength length of the magnetic field and electric current through the field conductor. The actual current voice coil motor into linear thrust or torque, their size is proportional to the size of current with the actual adoption. The size of the voice coil motor thrust produced depends on the design of the structure and the current intensity: the relationship F = β * L * I, the force generated by the current, is reflected in the voice coil motor to linear force sensitivity Kf, the rotary tone Circle motor torque sensitivity reflected Kt. We in the design of the unit is defined Kf is N / A, Kt units of N · M / A. A voice coil motor is a simple device, the current into mechanical force, and the force is so controlled by a positioning means and a controller position feedback reached, which is determined by the accuracy of the controller, and the voice coil motor itself has nothing. Cylindrical voice coil motor cylindrical voice coil motor, because it can provide high-thrust, high speed, so widely used. This motor can produce 0.7N ~ 2500N is a powerful driving force, and therefore accounted for 80% or more of the market, while its travel is generally not more than 50mm. This motor is mainly used in medical, semiconductor, aerospace, automotive and other fields, including brake valves, Z axis precise position control was caught and short, many aspects of small precision replace measuring instrument, vibration platform and active damping system. Market mainly directed medical, semiconductor, aerospace and automation industry. Rectangular voice coil motor and voice coil motor compared to cylindrical, rectangular voice coil motor produces less thrust, but its stroke is relatively long. Thrust up to 1000N, the biggest travel up to 250mm. Rectangular voice coil motor may be used alone, to generate XY axis movement is very good products, and its market is mainly directed semiconductor and micro machine tool industry. Flat voice coil motor flat voice coil motor and voice coil motor filling stroke is relatively short compared to the case of the same volume, but its advantage is the lower level surface. Thrust up to 500N, stroke up to 25mm. Flat-series is ideal for generating XY motion short stroke, the market is mainly directed semiconductor and micro machine tool industries. The voice coil motor swing swing-type voice coil motor is rectangular products technologies, will be bent products rectangle to form a certain angle positioning system to meet the high-performance angle swing. RS Series can provide maximum swing angle of 90 degrees, the torque of 50 Nm. Swing-type voice coil motor products used in laser technology in the mirror locator, respect swing-type valve brake, swing-type positioning systems, and flight controllers involved in the semiconductor industry, automotive, aviation and aerospace industries also known as a voice coil motor swing - - galvanometer motors. Application of the voice coil motor is mainly used in small stroke, high speed, high acceleration, suitable for small space; the most common is the mobile phone camera in autofocus is entirely by the whole drive to complete. Cylindrical voice coil motor series application on the market is quite extensive. This motor has a high rate of acceleration, it can produce a powerful driving force of 0.7N-1000N, and their travel is less than 50mm. Which motor is mainly used in medical, semiconductor, aerospace, automotive and other fields, including many aspects of brake valves, the replacement of small precision measuring instrument, vibration platform and active damping system.