The problem is simple. The stepper motor drags the tool along the rack. The distance is limited. If it is not limited, it will fall off. What method can be used to avoid this situation?For example, plus limit switch, I suspect that the accuracy is not enough,Can I do that by controlling the number of pulses in the stepper motor, but I doubt that it will reset the stepper motor every time you start the machine,Which master has a good way to achieve it, point it out!! It's OK to leave a qq.
Stepper motor is an induction motor, its working principle is the use of electronic circuit, the DC power supply variable components, multi-phase timing control current this current stepper motor power supply, stepper motor can work normally, the power supply for the stepper motor driver is divided into the multi phase sequence controller.
The stepping motor is an open loop control element which transforms the electric pulse signal into angular displacement or linear displacement. In the case of non overloaded, the motor speed and stop position depends only on the pulse frequency and pulse number, regardless of load changes, when the stepper driver receives a pulse signal, it drives stepper motor to set the direction of rotation of a fixed angle, called "step", it is the rotation of the fixed point of the operation step by step. Number of pulses can be controlled by controlling the angular displacement, so as to achieve the purpose of accurate positioning; at the same time by controlling the pulse frequency to control the motor rotation speed and acceleration, so as to achieve the purpose of speed.
To completely solve the problem of stepper motor limit, that is, change the AC servo motor.If you do not change, you must use the stepper motor for precise positioning limit, you can according to the following method:First, buy brand stepper motor.Two, increase the absolute encoder.Three, the use of high-precision sensors, that is, a good proximity switch
