The desktop-format Ensemble QDe drive is suitable for single- or multi-axis applications using Aerotech’s Ensemble family of drives and controllers, including point-to-point motion, linear and circular interpolation, and multi-axis error correction.
High-speed interrupts and data-logging capabilities provide a real-time link to external systems. A high-speed position latching capability and multi-axis position synchronised output (PSO) allow pulses to be generated based on actual position feedback.
The drive supports sub-nanometer positioning resolution at high bandwidths. A capacitive sensor feedback circuitry with a 20-bit resolution results in low noise levels over the full travel range. Aerotech has developed a linearisation technique that, it says, achieves a linearity of better than 0.01% over the full travel range in closed-loop mode.
The drive uses PID servo loops with advanced feed-forward and multiple integrators, coupled with eight programmable filters, to help optimise motion performance. Software is available that offers advanced, yet easy-to-use, tools such as learning control, harmonic cancellation, command shaping, and cross-axis feed-forward to improve tracking errors and provide faster step-and-settle times.