A vehicle power system includes an electric machine, an inverter electrically connected with the electric machine, and a controller. The controller, while injecting AC voltage output by the inverter into the electric machine as a DC voltage input to the inverter changes, drives a duty ratio of the inverter toward a constant value to obtain resolver offset information associated with the electric machine from a current response of the electric machine to the AC voltage.

A method for controlling a gimbal includes detecting a motion state of a motion of the gimbal, comparing the motion state to a preset threshold, and controlling the gimbal to move along a moving direction of the motion or to move in an opposite direction to the moving direction oldie motion based on the comparison.

To provide a vehicle steering control device capable of suppressing influence of a torque generated during driving support by an EPS device on steering of a steering wheel performed by a driver. The vehicle steering control device includes an EPS controller (first controller) that controls a speed reduction mechanism and a differential mechanism controller (second controller) that controls a differential mechanism. In addition, the vehicle steering control device has a first steering assist mode of assisting driver's steering and a second steering assist mode of performing steering independently from the driver's steering. In the second steering assist mode, the second controller controls the differential mechanism so as to cancel a torque applied to a rack-and-pinion side of the differential mechanism from the speed reduction mechanism controlled by the first controller.

An inverter converts direct-current power to alternating-current power by operations of a plurality of switching elements under a PWM control, and supplies the alternating-current power to an alternating-current electric motor. A feedback control computation unit of an inverter control unit uses current values acquired from current sensors detecting a current flowing to the alternating-current electric motor and a rotation angle of the alternating-current electric motor to perform a control computation in a (N/2) cycle (N is a natural number) of a triangular wave carrier of the PWM control. At the acquisition of the current values detected by the current sensors, an average acquisition unit acquires an average of current values in a carrier half cycle as a period between a peak and a valley of the carrier, or acquires a current value regarded as an average of the current values at an acquirable timing.

An inverter converts direct-current power to alternating-current power by operations of a plurality of switching elements under a PWM control, and supplies the alternating-current power to an alternating-current electric motor. A feedback control computation unit of an inverter control unit uses current values acquired from current sensors detecting a current flowing to the alternating-current electric motor and a rotation angle of the alternating-current electric motor to perform a control computation in a (N/2) cycle (N is a natural number) of a triangular wave carrier of the PWM control. At the acquisition of the current values detected by the current sensors, an average acquisition unit acquires an average of current values in a carrier half cycle as a period between a peak and a valley of the carrier, or acquires a current value regarded as an average of the current values at an acquirable timing.

The invention relates to a positioning device (120, 154), for example for testing, comprising a micromechanical positioning actuator (130) for causing movement of a probe (150, 151) with respect to a target (110), a positioning controller (145), the positioning controller (145) having an output coupled to the actuator (130) for controlling the movement, and the positioning controller (145) having a steering input (156) for receiving a steering signal to the positioning controller (145), and the positioning controller (145) arranged to control the movement based on the steering signal. The measurement device may have memory for storing positioning control instructions (300). The positioning controller (145) may be arranged to control said movement based on said steering signal and said positioning control instructions (300).

Systems and methods for displaying resource savings. A system may comprise at least one computer-readable storage medium storing executable instructions, and at least one processor programmed by the executable instructions to present a visual representation of resource savings that are attributable to one or more consumption reduction measures. The visual representation may comprise at least one first column representing baseline resource consumption for a reporting period, at least one second column representing actual resource consumption during the reporting period, and a horizontal band intersecting the at least one first column, wherein a height of the horizontal band corresponds to a difference between a height of the at least one first column representing baseline resource consumption for the reporting period and a height of the at least one second column representing actual resource consumption during the reporting period.

Systems and methods for adjusting a baseline resource consumption. The adjustment may be associated with at least one incident impacting resource consumption during a reporting period. resource consumption data may be acquired from one or more resource consumption sub-meters for a plurality of time points during the reporting period. A first resource consumption value may be established based on resource consumption data associated with time points during the reporting period prior to occurrence of at least one incident. A second resource consumption value may be established based on resource consumption data associated with time points during the reporting period subsequent to occurrence of the at least one incident. An amount of reduction or increase in resource consumption attributable to the at least one incident may be determined based on a comparison between the first resource consumption value and the second resource consumption value.

Systems and methods for adjusting a baseline resource consumption. The adjustment may be associated with at least one incident impacting resource consumption during a reporting period. resource consumption data may be acquired from one or more resource consumption sub-meters for a plurality of time points during the reporting period. A first resource consumption value may be established based on resource consumption data associated with time points during the reporting period prior to occurrence of at least one incident. A second resource consumption value may be established based on resource consumption data associated with time points during the reporting period subsequent to occurrence of the at least one incident. An amount of reduction or increase in resource consumption attributable to the at least one incident may be determined based on a comparison between the first resource consumption value and the second resource consumption value.

A measurement method and system include illuminating an object to be measured with light at two different wavelengths and an incident angle; capturing an image of the object; detecting a frequency of an interference pattern from the image using Fractional Bi-Spectrum Analysis; and calculating a thickness of the object based on the Fractional Bi-Spectrum Analysis. The thickness is calculated based on a relationship between the thickness and the frequency of the interference pattern. The Fractional Bi-Spectrum Analysis is performed on a linear medium with the two different wavelengths being known.