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The Mini Position Controller is a complete PID position control
module. When used with a brushed DC motor and a quadrature encoder,
it forms a highly versatile, low-cost, position control module,
for low current servo motor control.
The Mini Position Controller circuitry includes a 10-bit analogue-to-digital
conversion, indicator LEDs, quadrature decoder circuitry, and two
channels of 10-bit PWM generation.
The Mini Position Controller has four primary modes of operation.
The first, Direct Position control mode allows a master unit to
command the desired motor position up to 32 bits in length (two's
compliment). In this mode of operation acceleration and maximum
velocity are determined by the programmed PID filter values.
In Trapezoidal control mode the Mini Position Controller may
be configured to run up to 16 consecutive trapezoidal movement segments.
Each segment can be programmed with the desired position, acceleration
limit, velocity limit, PID update rate, error-band, dwell time,
and one of three user configurable PID filter settings. A master
unit may initiate the trapezoidal movement segments, or the Mini
Position Controller may be programmed to implement the movements
on power up.
Analogue input (0V-5V, 1024 steps) control mode, with offset
and multiplier settings can allow limited position control with
just a potentiometer or other analogue source.
In Velocity control mode, with configurable rate of change and
update rate settings make, the Mini Position Controller a useful
platform for PID based motor speed control.
Additional features such as data logging (for direct and trapezoidal
control modes) and user configurable limit switch settings round
out this versatile and cost-effective position control solution.
Support products including free programming/test software, the ICON
Serial Adapter (simplifies connectivity to a PC), and the ICON H-Bridge
Active Cooling Kit make implementation of designs using these components
painless and simple.
The unit measures 4.0" x 1.9" x 0.6". Motor connections are made
via a screw terminal.
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