Nissan Motor Company Limited

Kabushiki Kaisha Toshiba

Fujitsu Corporation

Ricoh Company, Ltd.

Elmic Systems, Inc.

Akira Sawada

Takashi Nakajima

Hiroyuki Komatsu

Yuji Katsumata

Ken Ito

Kengo Fujiwara

Keiichi Sasaki

Hironori Tanaka

Mitsuaki Hayashi

Koji Suzuki

Naoki Iwata

Hironori Nishino

Ken Itou

Jun Takehara

Kenji Baba

Kenji Adachi

Takatsugu Fujishiro

Katsuhiro Aoki

Yuichi Ueno

Hiroshi Nakatani

Motohiko Okabe

Yoshito Sameda

Hiroshi Yoshinaga

Yusuke Takahashi

Masaya Maeda

Masumi Sato

Shinichiro Yagi

Yoshihiko Suzuki

Hiroyuki Abe

Daisuke Saito

Koichi Ikeda

Masaharu Furuya

Nobutaka Nishimura

Hideki Zenitani

Keiji Yamamoto

Shin Watanabe

Ryoichi Kurata

Tomoyuki Hamamura

Yui Ito

Hiroji Ebe

Wataru Takano

Jun Motosugi

Shou Oono

Kouichi Kuramitsu

Hiroyuki Nishikawa

Minoru Fujii

Kazushige Kimura

Kouichi Takene

Katsumi Kanehira

Yoko Todo

Katsunori Nakamura

Kenji Tsutsumi

Bunpei Irie

Kiyonori Kusuda

Shinya Kono

Katsumi Kanasaki

Takaaki Enohara

Koichi Nakamura

Kenji Toshimitsu

Kazumi Nagata

Hiroshi Kadoya

Makoto Toko

Kazuo Fujita

Kimito Idemori

Kazuya Nishida

Yoshiro Seki

Yuka Watanabe

Hiroshi Takigawa

Kazuhiro Nishido

Mitsuo Fujimura

Hiroyuki Kusakabe

Masatomo Ohta

Masahiro Haga

Yuuji Umeda

Shigeki Yamaji

Toyokazu Itakura

Sho Ohno

Fuminori Kishino

Tadayoshi Murayama

Shigeki Sawa

Manabu Matsumoto

Ichiro Toyoshima

Shigehito Kodera

Miyuki Hashimoto

Masaaki Ookubo

Hiromi Imai

Hiroshi Katou

Kanjiroh Kawasaki

Yuuji Katsumata

Syuta Mizoguchi

Tetsuya Hara

An electric vehicle includes a motor as a drive source and a coupling portion coupled to another vehicle, and travels while towing the coupled vehicle, which is the other vehicle coupled to the coupling portion. A control method for such an electric vehicle includes: calculating a basic torque target value representing a torque to be output by the motor based on a vehicle operation; calculating a final torque command value, which is a final command value for the torque, by performing correction processing for reducing a longitudinal vibration component generated in the electric vehicle due to the coupled vehicle being coupled to the coupling portion on the basic torque target value, based on a dynamic characteristic of the coupling portion to which the coupled vehicle is coupled; and controlling the motor based on the final torque command value.

Control method for electric vehicle and control device for electric vehicle

A method for controlling an electric vehicle including a plurality of driving wheels and a plurality of electric motors that generate driving forces respectively for the plurality of driving wheels, the method including: estimating a vehicle body speed for each of the driving wheels based on a rotation speed of each of the electric motors; estimating, for each of the driving wheels, a driving wheel disturbance torque, which is a disturbance torque acting on the driving wheel, based on the vehicle body speed estimated for each of the driving wheels; estimating a vehicle disturbance torque, which is an actual disturbance torque acting on the entire electric vehicle, based on the driving wheel disturbance torque estimated for each of the driving wheels; and controlling a torque to be output by each of the plurality of electric motors based on the vehicle disturbance torque.

Method for controlling electric vehicle and device for controlling electric vehicle

A control method for an electric vehicle using a motor as a traveling drive source to decelerate by a regenerative braking force of the motor, including: obtaining an accelerator operation amount; estimating a disturbance torque acting on a vehicle body of the electric vehicle; obtaining an angular velocity of a rotating body that correlates to a rotation speed of a drive shaft which drives the electric vehicle; calculating a first torque command value based on the accelerator operation amount; setting the first torque command value to a torque command value; controlling a torque generated in the motor based on the torque command value; setting a target stop position at the time of stopping the electric vehicle; calculating a target angular velocity of the rotating body according to a distance from the electric vehicle to the target stop position; calculating a second torque command value for stopping the electric vehicle at the target stop position based on a difference between the target angular velocity and the obtained angular velocity; and converging the torque command value to the disturbance torque by setting the second torque command value to the torque command value and adjusting the braking and driving forces of the motor according to a distance to the target stop position, when the accelerator operation amount decreases or becomes zero and the electric vehicle is about to stop.

An electric vehicle control method includes: basic torque distribution processing of determining a basic torque command value for each drive motor based on a total required driving force for the electric vehicle and driving force distribution for each of the drive systems; vibration damping processing of obtaining a corrected torque command value by performing correction for reducing vibration of a driving force transmission system on each basic torque command value; and driving force control processing of controlling a driving force generated by each drive motor based on the corrected torque command value. The vibration damping processing includes estimating whether each of the drive systems is in a dead zone section individually, and adjusting a correction amount for the basic torque command value of the drive system in the dead zone section according to the driving force distribution.

Electric vehicle control method and electric vehicle control device

A control method for an electric vehicle equipped with an electric motor as a driving source, the method including: setting a torque target value as a target value related to a driving torque of the electric vehicle based on vehicle information; calculating a basic feedback compensation value based on a parameter indicating a rotation state of the electric motor and a vehicle model of the electric vehicle; calculating a first feedback compensation value by multiplying the basic feedback compensation value by a first gain; calculating a second feedback compensation value by extracting a predetermined specific frequency component from the basic feedback compensation value and multiplying the specific frequency component by a second gain; calculating a torque command value by correcting the torque target value by the first feedback compensation value and the second feedback compensation value; and driving the electric motor based on the torque command value.

An electric vehicle control method for controlling a motor based on a torque command value in an electric vehicle includes: a disturbance torque estimation process of calculating a disturbance torque estimation value including an influence of a road surface gradient; a speed parameter acquisition process of acquiring a speed parameter relating to a vehicle speed; and a vehicle state control including a stop process of calculating a stopping basis torque target value so as to converge the torque command value to the disturbance torque estimation value in accordance with a decrease in the speed parameter, and a vibration damping process of calculating a stopping correction torque target value by performing filtering on the stopping basis torque target value.

A control method of an electric vehicle using one or a plurality of motors as a traveling drive source, includes: a motor torque command value calculating step that calculates a motor torque command value; an angular velocity detecting step that detects an angular velocity correlating with a rotation speed of a drive shaft which transmits a drive force of the motor to a drive wheel; a disturbance torque estimating step that estimates a disturbance torque acting on the motor based on the motor torque command value and the angular velocity; a limiting torque setting step that sets a limiting torque corresponding to the disturbance torque in a manner that a slipping rate of the drive wheel does not exceed a first predetermined value; and a motor torque limiting step that limits the motor torque command value using the limiting torque.

A control method for an electric vehicle in which a motor is used as a traveling drive source and deceleration is performed by a regenerative braking force of the motor, the electric vehicle including a towing unit configured to tow a separate object, the method including: acquiring an accelerator operation amount; acquiring a total mass of the electric vehicle; estimating a disturbance torque acting on the electric vehicle; acquiring an angular velocity of a rotary body; estimating a vehicle body speed of the electric vehicle; calculating a torque command value for the motor; measuring a load applied to the towing unit; correcting the total mass of the electric vehicle based on the measured load applied to the towing unit and the torque command value; controlling a torque generated in the motor based on the torque command value; and converging the torque command value to the disturbance torque.

Control device for electric vehicle and control method for electric vehicle

Provided is an electric vehicle control method. The electric vehicle control method includes: a disturbance torque estimation process of calculating a disturbance torque estimation value including an influence of a road surface gradient; a speed parameter acquisition process of acquiring a speed parameter relating to a vehicle speed; a stop process of calculating a stopping basis torque target value so as to converge a torque command value to the disturbance torque estimation value in accordance with a decrease of a speed parameter; and a vibration damping process of calculating a stopping correction torque target value by performing filterring on the stopping basis torque target value. In the vibration damping process, the torque command value is set based on the stopping basis torque target value in a first just-before-stop period set in a relatively high vehicle speed range, and is set based on the stopping correction torque target value in a second just-before-stop period set in a relatively low vehicle speed range.

A reading circuit for an infrared detector, includes: pixel driving circuits arranged in a matrix; vertical selection lines provided for respective rows of the pixel driving circuits; horizontal selection lines provided for respective columns of the pixel driving circuits; a vertical selection circuit configured to output a row selection signal to the vertical selection lines; and a horizontal selection circuit configured to output a column selection signal to the horizontal selection lines to read, to a reading line, a signal from pixel driving circuits for one row selected by the row selection signal, wherein each pixel driving circuit includes a driving circuit of the infrared detector, and a switching circuit configured to switch whether or not to input a test signal to the driving circuit, based on the row selection signal output to a corresponding vertical selection line and the column selection signal output to a corresponding horizontal selection line.

Reading circuit for infrared detectors and method for inspecting same

A control method for an electric vehicle includes controlling a torque of a motor based on a final torque command value by calculating the final torque command value such that a vibration damping control to reduce vibrations of a driving force transmission system of a vehicle is performed on a target torque command value set based on vehicle information, calculating the final torque command value based on the target torque command value and a value obtained by multiplying a drive-shaft torsional angular velocity by a feedback gain, estimating, by use of a vehicle model that models the driving force transmission system, a dead-zone period during which a motor torque output from the motor is not transmitted to a drive-shaft torque of the vehicle, and determining whether or not the vehicle is just before stop of the vehicle.

The control method for an electric vehicle sets a motor torque command value based on vehicle information and controls torque of a first motor connected to a first drive wheel which is one of a front drive wheel and a rear drive wheel. The control method for an electric vehicle calculates a first torque command value by a feedforward computation based on the motor torque command value, detects a rotation angular velocity of the first motor, and estimates a rotation angular velocity of the first motor based on the first torque command value by using a vehicle model Gp(s) that simulates a transfer characteristic from a torque input to the first drive wheel to a rotation angular velocity of the first motor.

Control method and control device for electric vehicle

The control device for the electric vehicle determines whether or not the starting operation of the vehicle has been performed by the driver, calculates the disturbance torque estimated value Td necessary for maintaining the vehicle stop state corresponding to the disturbance acting on the vehicle, and performs a control such that the driving torque of the motor converges to the disturbance torque estimated value Td when the vehicle is determined to be just before stop of the vehicle during running or determined to have undergone the starting operation. Then, the control device for the electric vehicle controls the responsiveness of the driving torque to the disturbance acting on the vehicle, and increases the responsiveness of the driving torque of the motor compared with the responsiveness of the driving torque just before stop of the vehicle when the starting operation is determined to have been performed.

A vehicle control device for decelerating by the regenerative braking of a motor connected to a drive shaft of a drive wheel calculates a torque command value for suppressing a vibration component of the drive shaft by feeding back a torsional angular velocity of the drive shaft to a desired torque that determines the power of the motor and controls the operation of the motor on the basis of the torque command value. The control device estimates a dead zone section, in which the torque of the motor in the vehicle is not transmitted to the drive shaft, on the basis of the desired torque and limits the torque command value in the case where the vehicle is in the dead zone section.

Vehicle control method and control device

A signal output circuit includes a transistor includes a source that is coupled to a light receiving element and a gate of which electric potential is fixed, a first switch circuit capable of fixing a potential of the source to a reference potential, a second switch circuit coupled to a drain of the transistor, a third switch circuit coupled to the drain, a first capacitor coupled to the drain via the second switch circuit and coupled to the drain via the third switch circuit, wherein a first voltage according to a first current flowing through the transistor via the second switch circuit occurs, and a second voltage according to a second current flowing through the transistor via the third switch circuit occurs, and an output circuit that outputs a first signal corresponding to the first voltage and a second signal corresponding to the second voltage.

Signal output circuit, image sensor, and imaging apparatus

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Kanagawa, Japan

Akira Sawada