Often, Shanghai four macros client will call us why 43000 hybrid linear step input power is 7 w but performance than the input power is 10 w 46000 permanent magnet linear stepper motor is better? The answer to the question is the efficiency of the motor itself. The hybrid motor efficiency is about 65% on average, and the permanent magnet motor efficiency is about 25%. Efficiency differences there are two main reasons: the first reason is the hybrid motor USES is silicon steel laminated stator assembly (See figure 1)Compared with permanent magnet motor of low carbon steel stamping stator assembly, hybrid motor stator lamination of with smaller eddy current loss and laminated structure of silicon steel materials can reduce the hysteresis losses; So overall hybrid linear motor iron loss than permanent magnet motor, so hybrid motors have higher efficiency. At the same time, the interval of hybrid motor Angle is 1. 8 degrees or 0. Step 9 degrees, the contrast in permanent magnet motors from the Angle of 15 degrees or 7. 5 degrees, will increase the resolution of the every step to step the 0. The 000060 - inch [0. 001524mm]And compared to zero. The 00025 - inch [0. 00635mm], hybrid motor has better location performance. Figure 1: silicon steel laminated stator assembly and low carbon steel stamping assembly the second reason is that the magnetic circuit of the machine. The hybrid motor structure makes the stator of the air gap for about half of the permanent magnet motor. The typical design of hybrid motor air gap is 0. 003-0. 004 inches (0. 0762-0. 01016mm）Compared with permanent magnet motor air gap is 0. 007-0. 008 inches (0. 1778-0. 2032mm）。 Smaller gap provides higher efficiency of magnetic coupling, resulting in a higher torque. As shown in figure 2. 大小17 (43000). Single fold thickness of hybrid motor and 46000 permanent magnet motor, corresponding to the input power of 7 w and 10 w the same screw, performance comparison under the same linear velocity curve, the hybrid motor high figure 2 hybrid and permanent magnet motor air gap than in addition to the efficiency advantages, compared with permanent magnet motor, hybrid motor and other the following advantages: 1, the linear stepper motor have special advantages in positioning applications, and because each send a pulse controller, step motor started. The resolution of the movement depends on the lead screw and step away from the Angle of the motor. The hybrid motor 1. 8 degrees or 0. Step 9 degrees of pitch Angle (VS 15 degrees or seven typical permanent magnet motor. Step 5 degree Angle)To increase the resolution to the whole step 0. The 000060 - inch [0. 001524mm]Compared with permanent magnet motor whole step 0. The 00025 - inch [0. 00635mm], hybrid motor has better location performance. 2, in many applications of the motor installed on the performance of the whole system play a crucial role. On a front end cover of hybrid motor and motor bearing concentric positioning convex platform, can better when installing motor centering on institutions. As shown in figure 3: positioning convex platform is beneficial to install the concentricity of three, hybrid motor can be more convenient installation encoder, so as to achieve closed-loop control purpose. Because hybrid motor with metal rotor shaft, can be processed into more sophisticated dimensional tolerance, better with encoder encoder installation, reduce jitter and can use the higher resolution of the encoder. 4, don't change the motor size and improve the output performance is many occasions application requirements. The same flange dimensions of hybrid motor is by changing the thickness of the whole motor to provide several different power output. And permanent magnet motor needs to be adjusted and the design of a complete set of mold, need to pay for the bigger mould. To sum up, compared with permanent magnet motor, hybrid motor has higher efficiency, due to its smaller iron losses, smaller stator output gap and higher power density. These characteristics are affected cost; Under the request of thrust, speed and resolution of the adapter, permanent magnet motor is feasible low-cost solution. If your application needs of high repeat precision, high resolution, high-speed stability, or custom efficient module, Shanghai four macro mechanical and electronic hybrid motor is an ideal solution to meet your requirements. In this paper, copyright owned by Shanghai four macro linear motor, prohibited reproduced! the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone:
