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Matches 1 - 50 out of 11,552

Document Document Title
WO/2021/062369A1
An integrated circuit (100 A) includes an H-bridge circuit (102) having a first output node (OUT1) for coupling to a high-side terminal of an inductor (103) and a second output node (OUT2) for coupling to a low-side terminal of the induc...  
WO/2021/059837A1
The objective of the present invention is to perform fine control of a step motor. This step motor drive device includes a step motor (20) comprising a rotor (22), a stator (23a, 23b), and a coil (21) for generating a magnetic force towa...  
WO/2021/042637A1
A method, apparatus and system for controlling a stepping motor (1003) and a storage medium, the method comprising: providing a sinusoidal S-curve acceleration algorithm; according to a target displacement and a target velocity, by means...  
WO/2021/005115A1
The present invention relates to a method of operating a stepper motor for use in a dental tool machine (1) for removing material from a dental blank (2), the method comprising: a step of adapting torque reserves of the stepper motor at ...  
WO/2020/221044A1
A control method for a step motor, and a mobile terminal, the method comprising: within a process of a step motor driving a sliding block to move from a first limiting position to a second limiting position, determining a current positio...  
WO/2020/189059A1
In the present invention, when an on-off valve is switched from an open state to a closed state a drive pulse is continuously supplied to a stepping motor. In response to the drive pulse the stepping motor rotates, thereby moving a valve...  
WO/2020/144352A1
The invention relates to a linear drive for pigmentation devices, comprising a stator (1), an air gap (7) which is provided in the stator and is formed so as to be offset in a defined manner, an electric coil (2) within the stator (1), s...  
WO/2020/144600A1
A system and method for detection of a fault in a component of an Alternate Current Motor (ACM) based on current samples of the ACM. The system includes a current sensor for sampling a current of the ACM. The sampling is performed a plur...  
WO/2020/135237A1
A method for quantitatively analyzing the starting capability of a stepper motor. The method comprises: acquiring the maximum static starting torque of a stepper motor at different starting frequencies; drawing a static torque frequency ...  
WO/2020/119869A1
The invention relates to a protective circuit of an electric motor with a single-phase winding (3), consisting of two coil sections (5, 6) with a centre tap (7), wherein the two winding ends of the coil sections (5, 6) are connected to e...  
WO/2020/108468A1
A method for driving a stepper motor, a driver thereof, and a computer-readable storage medium, wherein the method for driving a stepper motor comprises: when a current configuration instruction is received, reading a current data value ...  
WO/2020/094844A1
An actuator for connecting and disconnecting a dog clutch having an axially moveable sleeve (3), the actuator (4) comprising an electric motor (6), wherein a rotor (61) of the motor is connected to a rotatable actuator rod (7), which is ...  
WO/2020/088715A1
The invention relates to a method and to a circuit arrangement using which a mechanical load applied to the motor shaft of a stepper motor can be detected without a sensor in a voltage-based operating mode in which a target coil current ...  
WO/2020/064097A1
In order to achieve the energy efficiency class IE4 defined in IEC standard 60034, it is necessary to operate permanently excited synchronous machines directly on the mains. Since this is not readily possible, soft starters come into con...  
WO/2020/057507A1
A closed-loop stepper motor control system, drive device and automation device, wherein the system comprises a microprocessor (1) compatible with EtherCAT communication protocol functions, an external interface circuit (2) connected to t...  
WO/2020/057505A1
A stepper motor driver with brake drive, a drive device and an automation device are disclosed. The stepper motor driver comprises a microprocessor (1) embedded with a communication protocol, an external interface unit (3) mutually conne...  
WO/2020/055531A1
An image forming apparatus and an image forming method are provided. The image forming apparatus includes a printing engine to form an image, a step motor to drive the printing engine, a driving circuit to provide a constant current to t...  
WO/2020/049079A1
For controlling an electric motor to maintain a current motor position, a motor controller determines the current motor position of the electric motor and selects (S41 ) from a set of stable positions, defined by cogging torque of the el...  
WO/2020/008918A1
The purpose of the present invention is to reliably cause a step motor to rotate while minimizing power consumption. A step motor driving device, provided with: a step motor (20) having a rotor (22), a stator, and a coil (21); a drive ci...  
WO/2019/244552A1
Provided is a stepping motor control device that can perform hold control in which, when the rotation of a stepping motor is stopped, an excitation current can be reduced smoothly. A control device (10) of a stepping motor (20) causes a ...  
WO/2019/230203A1
Provided is a novel technology for detecting the absolute position of a subject using a Hall effect sensor. A magnetism detection unit (2) has two Hall effect sensors (first Hall effect sensor H1 and second Hall effect sensor H2). The tw...  
WO/2019/197775A1
The invention concerns a method for controlling a polyphase actuator consisting of supplying each phase with a periodically varying voltage having a periodic sequence of interval Pi, having constant duration and amplitude An,i, where n c...  
WO/2019/190569A1
A method for controlling switched reluctance machine (SRM) utilizing a SRM control system. The method allows for adaptive pulse positioning over a wide range of speeds and loads. An initial rotor position is provided for the SRM utilizin...  
WO/2019/170995A1
The invention concerns a method for controlling a system (1) for a motor vehicle, said system comprising at least: - an actuator, - a volatile memory (RAM) in which at least one item of position information of the actuator (IPRAM) is sto...  
WO/2019/155734A1
The purpose of the present invention is to make it possible, during driving of a stepping motor, to reduce power consumption while stabilizing a stop position during stop control. Accordingly, this motor control device is provided with: ...  
WO/2019/130928A1
Provided are an electrically operated valve control device and an electrically operated valve device provided with the same, with which it is possible for a deterioration in the accuracy of controlling a degree of opening as a result of ...  
WO/2019/125734A1
A method for controlling the drive current in a stepper motor includes measuring stepper motor current, computing a load angle of the stepper motor, calculating a torque ratio of the stepper motor, generating a reference current as a fun...  
WO/2019/119696A1
Disclosed is a stepper motor driver suitable for a mechanical procedure, comprising a base plate (1), wherein an upper surface of the base plate is provided with a placement groove (2), two side faces of an inner wall of the placement gr...  
WO/2019/088924A1
A linear motor is disclosed, the linear motor comprising a longitudinal coil assembly comprising coil units arranged in a cascading manner and a magnet track spaced from the coil assembly, and adapted to move along a path which traces a ...  
WO/2019/059486A1
An image forming apparatus is provided. The image forming apparatus includes an engine unit to be used for performing an image forming job, a motor to start the engine unit, a driver circuit to sense a current flowing in the motor and su...  
WO/2019/034212A1
The invention relates to a method and to a circuit assembly for damping stepper motor resonances during the operation of a stepper motor (M) in particular in the middle and high rotational-speed range, wherein each coil (A; B) of the ste...  
WO/2019/025591A1
Disclosed is a method for controlling operation of an ambulatory infusion device drive (2),the ambulatory infusion device drive (2) including a spindle drive (2) with a stepper motor (21) and a rotary encoder (23) in operative coupling w...  
WO/2019/012634A1
This bathroom drier comprises: a rotating damper (3) which opens and closes a bathroom external blowing port, and the degree of opening of the rotating damper (3) is adjusted by a rotating operation to a position within the range from a ...  
WO/2018/221628A1
The present invention suppresses high-frequency noise in micro step driving of a stepping motor. A motor control device (100) comprises: an H bridge circuit (20); and a control means that drives a switching element of the H bridge circui...  
WO/2018/222886A1
An industrial electrical machine includes a stator; a rotor in magnetic communication with the stator; a plurality of windings disposed in the rotor and/or the stator; and an embedded solid state controller. The solid state controller is...  
WO/2018/206266A1
The present invention provides a servo driver, comprising: a driver, a pulse conversion module and a pulse interface, wherein the pulse conversion module is connected between the pulse interface and the driver, and the pulse conversion m...  
WO/2018/198218A1
Provided is a stepping motor drive device in which a write data calculation unit (131) obtains, from a ROM (30) in which register update patterns are stored, a first register 1 update pattern to be set in a first output data register and...  
WO/2018/161212A1
A motor control system (12), an unmanned aerial vehicle control system (10), an unmanned aerial vehicle (1000), and a motor startup protection method. The motor control system (12) is communicatively connected to an external device (2). ...  
WO/2018/146774A1
A motor control device can perform the drive control of a stepping motor in association with pre-excitation in which, before or when starting to drive the stepping motor, excitation is performed over a first time with a current lower tha...  
WO/2018/134266A1
A method for operating a sensorless-commutation DC machine, in particular a bipolar stepper motor or a brushless DC motor, wherein the DC machine comprises a rotor and a stator having a stator winding, wherein the stator winding comprise...  
WO/2018/072791A1
A method and a circuit arrangement are described, by means of which a stepper motor (M) can be operated by adaptive control across a broad rotational speed range, including standstill, in which the motor is electrically fixed in a specif...  
WO/2018/075539A1
In described examples, first and second power switches (214, 218) respectively energize and de-energize a coil (202) of a stepper motor (204) during each cycle for pulse-width modulating (PWM) (232) the coil current. During a cycle inclu...  
WO/2018/056306A1
[Problem] To provide a motor control device that can suppress degradation of reciprocal AD conversion precision even when an A/D converter is shared with a plurality of motors. [Solution] A motor control device provided to an image forma...  
WO/2018/047216A1
Stored in a storage device (44) is a map of stable stop positions for maintaining a stopped state for which a mounting head (14) is stable when the servo is off in a Y axis linear servo motor (27). A control device of a component mounter...  
WO/2018/043001A1
In order to prevent step-loss in a motor from being erroneously detected when in the resonance range of the motor during acceleration/deceleration of the motor rotation, the present invention provides a motor control device (10) comprisi...  
WO/2018/043077A1
The purpose of the invention is to accurately control a rotation stop position of a motor. A motor control device (100) is provided with a BEMF detection unit (118) and a CPU (101). The BEMF detection unit (118) detects a zero-crossing p...  
WO/2018/035790A1
A horizontal winding machine open loop control method and system, the method comprising the following steps: receiving a control command inputted by a user (S101); analysing the control command to obtain a rotation speed and direction co...  
WO/2018/035786A1
A vertical winding machine reverse rotation control method and system, the method comprising the following steps: receiving a reverse rotation command inputted by a user (S101); acquiring a rotation speed corresponding to the reverse rot...  
WO/2018/035785A1
A horizontal winding machine forward rotation control method and system, the method comprising the following steps: receiving a forward rotation command inputted by a user (101); acquiring a rotation speed corresponding to the forward ro...  
WO/2018/035787A1
An application method and system for controlling reverse rotation in a horizontal winding machine, the method comprising the following steps: receiving a reverse rotation command inputted by a user (101); acquiring a rotation speed corre...  

Matches 1 - 50 out of 11,552