Picomotor Piezo Actuator, Closed Loop, 12.7 mm Travel

The 8310CE Closed Loop Picomotor™ Actuator is ideal for applications where closed-loop control and absolute position calibration is required. With an integrated rotary encoder, and forward and reverse limit switches, this unique device offers the best attributes of the standard Picomotor™ actuator -- <30-nm resolution, >5 lb. (22 N) of force along with set-and-forget long-term stability -- with the added benefits of exceptional accuracy and ±1-μm bi-directional repeatability over the entire half-inch travel range.

Closed Loop Positioning

Choose between operating the Closed-Loop Picomotor actuator in closed-loop mode where it can hold a set position, or command it to move a specified distance. You can also choose between position or velocity profiled movement. Either way, when the actuator reaches its target location, the controller will adjust the motor to the precise requested encoder count and then stop motion. Even if you keep the servo loop enabled, the motor will only move in response to any system disturbances which cause rotation of the screw. Because the inherent resolution of the motor is finer than the resolution of the encoder, zero-count encoder error is always achieved. You can query the encoder to determine the rotation of the screw at any time.

<30 nm Positioning Resolution

Operating in open-loop mode, the Closed-Loop Picomotor actuator has a step size of < 30 nm, allowing for very small movements. In closed-loop mode, the encoder has a resolution of 52.9 nm, allowing for very small, controlled, and repeatable movements.

Easy-to-use Flexible Motion Controllers and Drivers

Our Closed-Loop Picomotor controllers and drivers are modular. You can daisy-chain up to 31 drivers together with two channels each, so you can have a network of up to 62 Closed-Loop Picomotor actuators. You have two interface options with the controller system: hand pad or computer, both providing plug-and-play use.

Set-and-forget stability with virtually no backlash

The Closed-Loop Picomotor actuator moves when voltage is applied to the piezo, changing its length and in turn moving the jaws which turn the screw. When no power is applied, the actuator does not move. You can feel confident that your set-up will stay put, even when you power down your system.

Simple Integration

The standard sized 0.375 inch shank of the Closed-Loop Picomotor actuator allows it to easily be integrated into standard micrometer mounting holes.

Substantial Force Contained in a Small Package

With load capacity of 5 lbs (22 N), our closed loop Picomotor actuators have a substantial push force.