robotic arm


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can you help me with the correct excitation of a bipolar stepper motor because we will be using it in our robotic arm project. and what advice can you give regarding our project? we will be using a z86e08 microcontroller. thanx.

Robert Scott

<p>Bipolar stepper motors are usually driven by an H-bridge circuit for each winding. Maximum torque is achieved by using full stepping, which means that both windings are always energized in one direction or another. Half-stepping is not as powerful, but it is smoother running. In half-stepping each winding is either on in one direction(+) or the other(-) or off(0). The 8-phase sequence is:
+ +
+ 0
+ -
0 -
- -
- 0
- +
0 +
<p>Robert Scott<br>
Real-Time Specialties<br>
Embedded Systems Consulting