AMIS-30623 LIN Microstepping Motordriver
Data Sheet
15.0 Functions Description
This chapter describes the following functional blocks in more detail:
• Position controller
• Main control and register, OTP memory + ROM
• Motordriver
The Motion detection and LIN controller are discussed in separate chapters.
15.1 Position Controller
15.1.1. Positioning and Motion Control
A positioning command will produce a motion as illustrated in Figure 8. A motion starts with an acceleration phase from minimum
velocity (Vmin) to maximum velocity (Vmax), and ends with a symmetrical deceleration. This is defined by the control logic according to
the position required by the application and the parameters programmed by the application during configuration phase. The current in
the coils is also programmable.
Velocity
Acceleration
range
Deceleration
range
Zero speed
Hold current
Zero speed
Hold current
Vmax
Vmin
P=0
Position
Pstart
Pstop
Pmax
Optional zero
switch
Pmin
Figure 8: Positioning and Motion Control
Table 14: Position Related Parameters
Parameter
Reference
Pmax – Pmin
See Positioning
See Ihold
See Irun
See Acceleration and Deceleration
See Minimum Velocity
See Maximum Velocity
Zero speed Hold Current
Maximum current
Acceleration and deceleration
Vmin
Vmax
AMI Semiconductor – June 2006, Rev 3.0
17
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