# US 10,122,303 B2 · Motor control device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,122,303 B2 - Document ID: US10122303B2 - Status: Granted - Kind: B2 - Application number: 14/389,803 - Filed: 2013-04-16 - Published: 2015-03-05 - Granted: 2018-11-06 - Earliest claimed: 2012-04-18 - Assignees: Mitsuba Corporation - Applicants: Mitsuba Corporation - Inventors: Hitoshi Roppongi; Kazuya Tateoka; Katsuhiro Tanino; Atsushi Nakamura - Web page: https://patentgrep.com/patent/US10122303B2 ## CPC - H02P 3/025: {holding the rotor in a fixed position after deceleration} - E05F 15/646: allowing or involving a secondary movement of the wing, e.g. rotational or transversal - E05F 15/70: with automatic actuation - H02P 6/085: {in a bridge configuration} - H02P 6/24: Arrangements for stopping - H02P 6/30: Arrangements for controlling the direction of rotation (H02P6/22 takes precedence) - B60J 5/06: slidable; foldable - E05D 15/1044: {specially adapted for use in railway-cars or mass transit vehicles} - E05D 2015/1055: {with slanted or curved track sections or cams} - E05Y 2201/438: Rotors - E05Y 2201/672: Tensioners, tension sensors - E05Y 2400/302: during electric motor braking - E05Y 2400/304: Voltage control - E05Y 2400/306: Temperature control - E05Y 2400/326: of the angular type - E05Y 2400/36: Speed control, detection or monitoring - E05Y 2400/446: Vehicle state sensors, e.g. parked or inclination - E05Y 2800/00: Details, accessories and auxiliary operations not otherwise provided for - E05Y 2800/74: Specific positions - E05Y 2900/50: for vehicles - E05Y 2900/531: Doors - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING - B60J: WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES (fastening, suspending, closing, or opening of such devices E05) - E05D: HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS (pivotal connections in general F16C11/00) - E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF ## Abstract The motor control device is an electric motor control device including a control unit (control circuit unit) configured to output a forward-rotation command or a reverse-rotation command to the electric motor. The control unit includes a position detector (door opening/closing information generation circuit) configured to detect a rotation direction of the electric motor when a detection signal is input from a rotation sensor (Hall integrated circuit (IC)), which detects the rotation of the electric motor, while no current is supplied to the electric motor. The control unit includes an electric current supply device (pulse width modulation (PWM) command generation circuit) configured to supply an electric current by which the electric motor is rotated in an opposite direction to the detected rotation direction by increasing an electric current supply duty ratio every time the detection signal is switched. ## Claims ### Claim 1 A motor control device for controlling an electric motor, the motor control device comprising: a control unit configured to output a forward-rotation command or a reverse-rotation command to the electric motor, and the motor control device being configured to drive an openable/closable body, wherein no clutch is provided between the electric motor and the openable/closable body, the motor control device comprising: a driving circuit unit; a power-supply voltage; and the control unit, wherein the control unit comprises: a position detector configured to detect a rotation direction of the electric motor when a detection signal is input from a rotation sensor, which detects the rotation of the electric motor while no current is supplied to the electric motor; and an electric current supply device configured to supply an electric current that drives the electric motor in an opposite direction to the detected rotation direction with an electric current supply duty, wherein the control unit short-circuits the terminal of the electric motor to stop the openable/closable body when a signal that commands to stop the openable/closable body is input based on an operation of an opening/closing stop switch during opening/closing of the openable/closable body, wherein the control unit switches stopping the openable/closable body to the electric current supply device when the position detector detects the rotation direction of the electric motor even where the command to stop the openable/closable body is input during opening/closing of the openable/closable body, and wherein the electric current supply device continues to supply the electronic current until the openable/closable body stops. ### Claim 2 (depends on 1) The motor control device according to claim 1, wherein the control unit causes the electric motor to generate an electric braking force in a rotation stop state of the electric motor and causes the electric motor to rotate in an opposite direction to the rotation direction of the electric motor by increasing the current supply duty. ### Claim 3 (depends on 1) The motor control device according to claim 1, wherein the control unit further comprises: a carrier frequency switcher, and wherein, when the rotation of the electric motor is detected while no electric current is supplied to the electric motor, the control unit controls a carrier frequency of the electric current supply at which the motor rotates to be decreased by the carrier frequency switcher. ### Claim 4 (depends on 2) The motor control device according to claim 2, wherein the control unit further comprises a carrier frequency switcher, and wherein, when the rotation of the electric motor is detected while no electric current is supplied to the electric motor, the control unit controls a carrier frequency of electric current supply at which the motor rotates to be decreased by the carrier frequency switcher. ### Claim 5 A driving unit comprising: an electric motor having a rotation sensor and wherein no clutch is provided between the electric motor and an openable/closable body; and a motor control device that outputs commands to drive the openable/closable body, wherein the motor control device comprises: a position detector; and circuitry that: during opening/closing of the openable/closable body, short-circuits a terminal of the electric motor to stop the openable/closable body, when the position detector detects a rotation direction of the electric motor after signal of command to stop the openable/closable body is input during opening/closing of the openable/closable body, supplies electric current that drives the electric motor in an opposite direction to the detected rotation direction; and continues to supply the electric current until the openable/closable body stops.