mdonner
Electrical
- Mar 2, 2003
- 61
Hi experts.
I am operating and maintaining several identical machines in the chip mfg industry, each equipped with an x-y motion motor with Z/Theta turret, and one manipulator with X linear motor and Z/theta tower.
The Z and Theta motors are steppers with encoders. I encounter cases in which motion is indicated (changing Z values are displayed) but the motor is stalled (usually for mechanical reason).
I need the theory of steppers that will explain the erronous feedback, and to compare it to servo motors that may avoid this problem.
Web links to proper materials will be highly appreciated.
Thanks
I am operating and maintaining several identical machines in the chip mfg industry, each equipped with an x-y motion motor with Z/Theta turret, and one manipulator with X linear motor and Z/theta tower.
The Z and Theta motors are steppers with encoders. I encounter cases in which motion is indicated (changing Z values are displayed) but the motor is stalled (usually for mechanical reason).
I need the theory of steppers that will explain the erronous feedback, and to compare it to servo motors that may avoid this problem.
Web links to proper materials will be highly appreciated.
Thanks