Face mask machine stepper motor adjusting _60 stepper motor load
1. Can't static: as a result of closed loop control, servo planetary gear motor itself structure and the characteristics of the decision, servo motor can't rest when to stop, in a small load disturbance or servo motor parameter debugging good cases, servo motor is always between the positive and negative pulse wave ( Servo drive can be observed on the encoder position values, it fluctuated between positive and negative) 。 In image processing, this is a factor influencing the accuracy.
2. Overshoot: when from higher to lower, or static, inevitably overshoot a distance, and then back in the correct. When the controller sends a pulse to the servo motor, servo motor is often not a pulse, but walked three pulse, and then in the back of two pulses. This for those who need a pulse a pulse movement, do not allow the overshoot of the occasion when the fatal.
3. Debugging complex: servo driver easily within hundreds of parameter, using several hundred pages of specification, and makes new career; Change a brand servo planetary gear motor, also can let veterans really a headache. This is for after-sales service and maintenance has brought a lot of work.
4. Low creep: servo motor at low speed running will appear peristalsis or crawl.
and closed-loop stepper motor in situ solves the above problem.
the closed-loop stepper motor is not a simple to the stepper motor with an encoder, but is carried out in accordance with the working principle of the servo motor system design and development. It USES a 32-bit DSP do give priority to the processor, in order to assure the high response and high speed of the whole system, can achieve every 25 microseconds can adjust the current of a motor, encoder with 0000 pulses/circle, and is the encoder metal encoder, both to ensure the accuracy and also ensures that the temperature and vibration environment, high adaptability, stability and reliability, or even better than the glass of the servo planetary gear motor encoder encoder.
in the first place, the closed loop stepper motor due to is the ontology is stepping motor of the machine, when at rest is stationary.
second, closed-loop stepper motor due to combined with the characteristics of the stepper motor and servo control mode, so no overshoot ( Because of the characteristics of the stepper motor is not overshoot) 。
third, debugging and use is very simple, only need to adjust the position of drive three potentiometer, equipment manufacturers can use not only, and equipment use, also can use, to the user's requirements is extremely low.
4, truly sine wave, vector and the way of filter was used to control current, low speed can be controlled at 0. 2 r/min, and the motor running very smooth and stable, this servo motor can't even do it ( General servo motor can theoretically RPM, practical applications will not be able to do r/min, roughly in the above 5 RPM)
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