Abstract: A rotary probe head having a dual interface for probe mounting that allows two separate interfaces to be mounted on opposite sides of the “A” or elevation axis of the rotary probe head. The two interfaces can be rotatable and interchangeable and allow for increased flexibility in handling different types of attachments including attachments having widely different mass, size, and/or interface connections. A probe can be mounted to one interface and a counterweight can be mounted to the opposite interface for improved holding torque performance by reducing the duty force and heat factor generation of the motor in the probe head.

Abstract: Current amplitudes in a motor can be controlled by summing a first signal indicative of an output current of the motor with a current command signal, integrating the current command signal with respect to time, and applying a first controller gain to a second signal indicative of the output current of the motor to obtain a gain-controlled signal indicative of the output current of the motor. The method further includes applying a second controller gain to the current command signal to obtain a gain-controlled current command signal, summing the gain-controlled signal indicative of the output current of the motor with the gain-controlled current command signal to obtain a voltage signal, and inputting the voltage signal to the motor such that current amplitudes in the motor are controlled.

Abstract: A rotary probe head having a dual interface for probe mounting that allows two separate interfaces to be mounted on opposite sides of the “A” or elevation axis of the rotary probe head. The two interfaces can be rotatable and interchangeable and allow for increased flexibility in handling different types of attachments including attachments having widely different mass, size, and/or interface connections. A probe can be mounted to one interface and a counterweight can be mounted to the opposite interface for improved holding torque performance by reducing the duty force and heat factor generation of the motor in the probe head.