Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Yusuke Tanji

Hideki Tamura

Yusuke Monobe

Khang Nguyen

Takahiro Ohori

Shingo Okaura

Kazumasa Yoshida

A signal processing apparatus for an electric tool is provided for generating a motor control signal for controlling a motor by performing a smoothing process on a torque value signal from a torque sensor of an electric tool by using a filter. The signal processing apparatus includes a half width detector circuit that detects a half width of the torque value signal; and a calculator circuit that controls a cut-off frequency of the filter to change the cut-off frequency according to a number of hits of the electric tool, based on the detected half width of the torque value signal.

Signal processing apparatus and electric tool

A signal processing apparatus for a tool including a rotating body rotated by impacts delivered from a drive apparatus is provided with: a filter a calculation circuit and a control circuit. The filter receives a torque value signal indicating a torque applied to the rotating body, and filters the torque value signal. The calculation circuit sets a filter coefficient of the filter based on a number of impacts delivered to the rotating body. The control circuit controls the impacts delivered to the rotating body, based on the torque value signal filtered by the filter.

Signal processing apparatus for tool comprising rotating body rotated by impacts delivered from drive apparatus

A contactless power feeding system includes: a primary circuit for supplying primary power to a power feeding coil; and a primary control circuit for controlling the primary circuit. The primary control circuit acquires, from a secondary control circuit, a secondary measured value and a secondary target value of secondary power received by a power receiving coil. The primary control circuit performs control processing and update processing alternately and repeatedly. The control processing is processing of controlling the primary circuit to bring the primary measured value into conformity with a primary target value. The update processing is processing of updating the primary target value. The update processing includes processing of calculating the primary target value based on transfer efficiency to be determined by the primary measured value and the secondary measured value and on the secondary target value.

Contactless power feeding system and contactless power transfer system

A control circuit is configured to adjust a phase difference which is a delay of the phase of each of the second drive signals to the phase of each of the first drive signals to a set value within a prescribed range to adjust the magnitude of output power. The control circuit includes an estimator and a setter. The estimator estimates whether an initial mode which is an operation mode of an inverter circuit in the case of a variable capacitance circuit being disabled is a leading phase mode or a lagging phase mode while the variable capacitance circuit is operating. The setter sets the prescribed range in accordance with the initial mode estimated by the estimator.

Non-contact power supply apparatus, program, method for controlling non-contact power supply apparatus, and non-contact power transmission system

A control circuit controls a plurality of conversion switching elements by first drive signals and a plurality of adjustment switching elements by second drive signals. The control circuit is configured to adjust a phase difference which is a delay of the phase of each of the second drive signals to the phase of each of the first drive signals to a set value within a prescribed range to adjust the magnitude of output power. The prescribed range includes at least one of a range of 270 degrees to 360 degrees and a range of 90 degrees to 180 degrees.

To provide an image processing apparatus which reduces, using a temporal noise removal scheme, image block distortion or noise and temporal flickering and fluctuation phenomena. The image processing apparatus () removing noise in an input image by adding a reference image to the input image includes a motion estimation unit () which generates motion information indicating a motion estimated for the input image; a motion compensation unit () which generates a after motion compensation second image corresponding to a before motion compensation first image by performing motion compensation using the generated motion information; a flatness degree calculation unit () which calculates a flatness degree of the input image; a blending rate calculation unit () which calculates addition rates for the input image, first image, and second image, using the calculated flatness degree; and a pixel addition unit () which adds the respective images according to the addition rates.

Growing community of inventors

Osaka, Japan

Yusuke Tanji