A rotary module for a measuring device of an accelerator facility includes a first radial bearing including a first bearing side configured to be paired with an accelerator-side flange connection and further including a second bearing side configured to receive the measuring device on the first radial bearing in a bearing manner such that the measuring device is connected to the accelerator facility by the first radial bearing; and a drive configured to control a rotational movement of the measuring device about an axis of rotation.

A rotary module for a measuring device of an accelerator facility includes a first radial bearing including a first bearing side configured to be paired with an accelerator-side flange connection and further including a second bearing side configured to receive the measuring device on the first radial bearing in a bearing manner such that the measuring device is connected to the accelerator facility by the first radial bearing; and a drive configured to control a rotational movement of the measuring device about an axis of rotation.

A luminaire is provided that includes a head, a movement system, and a control system. The movement system rotates the luminaire head around an axis of rotation. The movement system includes a motor and a braking system. The motor rotates the head about the axis of rotation and the braking system can prevent rotation of the motor. The control system receives an Engage Brake command via a data link. The control system engages the braking system in response to the Engage Brake command by determining whether the motor is rotating, causing rotation of the motor to stop electrically when the motor is rotating, determining whether the motor has stopped rotating, engaging the braking system when the motor has stopped rotating, and removing power from the motor. When the motor is stopped, the control system may store in non-volatile memory a current absolute position of the luminaire head.

Implementations described herein provide a pedestal lift assembly for a plasma processing chamber and a method for using the same. The pedestal lift assembly has a platen configured to couple a shaft of a pedestal disposed in the plasma processing chamber. An absolute linear encoder is coupled to a fixed frame wherein the absolute linear encoder is configured to detect incremental movement of the platen. A lift rod is attached to the platen. A motor rotor encoder brake module (MRBEM) is coupled to the fixed frame and moveably coupled to the lift rod, the motor encoder brake module configured to move the lift rod in a first direction and a second direction, wherein the movement of the lift rod results in the platen traveling vertically relative to the fixed frame.

Implementations described herein provide a pedestal lift assembly for a plasma processing chamber and a method for using the same. The pedestal lift assembly has a platen configured to couple a shaft of a pedestal disposed in the plasma processing chamber. An absolute linear encoder is coupled to a fixed frame wherein the absolute linear encoder is configured to detect incremental movement of the platen. A lift rod is attached to the platen. A motor rotor encoder brake module (MRBEM) is coupled to the fixed frame and moveably coupled to the lift rod, the motor encoder brake module configured to move the lift rod in a first direction and a second direction, wherein the movement of the lift rod results in the platen traveling vertically relative to the fixed frame.

In a method for generating a blocking moment in a standstill state of an electrically commutated electric motor having at least two windings, on which electric motor a possibly varying load moment acts from outside in the standstill state, first, a blocking current is supplied at a maximum value into a first winding. This blocking current is successively reduced to, possibly, a minimum value. From that moment the inductivity of the electric motor is controlled, namely by controlling the blocking current if the control deviation between the actual value and the set value of the inductivity exceeds a predetermined threshold value. Thereby, it is possible to control the blocking current in an adaptive manner insofar as, despite a varying load moment, the standstill state of the electric motor can be maintained by varying the blocking current.

A method for controlling a system for a motor vehicle is disclosed. The system includes an actuator, a volatile memory (RAM) in which an item of position information of the actuator (IP.sub.RAM) is stored, and a long-term memory (EPROM). The following are stored in the long-term memory (EPROM): at least one item of position information (IP.sub.ROM) of the actuator and an item of information relating to the powering down of the actuator (I.sub.HT), which assumes a first value (v1) when the system has been powered down in a controlled manner and assuming assumes a second value (v2) when the system has suffered a fault causing the current value of the position of the actuator stored in the volatile memory (RAM) to be deleted.

A control device for a stepping motor gradually increases an absolute value of the excitation current in phase A from when the start until the end of the hold period such that the amount of change in the excitation current per unit time is smaller than or equal to a first predetermined value. From the start of the hold period until a predetermined time elapses, an absolute value of the excitation current in phase B gradually increases such that the amount of change in the excitation current per unit time is smaller than or equal to the first predetermined value. By the end of the hold period after the predetermined time has elapsed, the excitation current in phase B reaches zero. When the hold period ends, one-phase excitation operation starts and the excitation current flows in phase A first with the same polarity as at the end of the hold period.

A driving device for a stepping motor includes a motor driving circuit configured to generate a current waveform representing an electrical angle in synchronization with a mechanical angle of the stepping motor, and excite the stepping motor using the current waveform; a memory configured to store a value of the electrical angle; and a controller configured to: when a power supply to the stepping motor and the motor driving circuit is stopped, store a first value of the electrical angle held by the motor driving circuit in the memory; and when the power supply is resumed, replace a value of the electrical angle of the motor driving circuit with the first value while suppressing a rotational operation of the stepping motor.

A driving device for a stepping motor includes a motor driving circuit configured to generate a current waveform representing an electrical angle in synchronization with a mechanical angle of the stepping motor, and excite the stepping motor using the current waveform; a memory configured to store a value of the electrical angle; and a controller configured to: when a power supply to the stepping motor and the motor driving circuit is stopped, store a first value of the electrical angle held by the motor driving circuit in the memory; and when the power supply is resumed, replace a value of the electrical angle of the motor driving circuit with the first value while suppressing a rotational operation of the stepping motor.