288 results about "Motor Drive Unit" patented technology

The assisted steering unit includes a motor drive unit and a ring assembly constructed and arranged to couple to and rotate a steering wheel. The assisted steering unit may include a ring assembly where the ring assembly includes a housing, a ring gear disposed within the housing, an anti-rotation pin operatively engaged with the housing. The assisted steering unit may also include a motor drive unit (MDU) including a motor and a drive gear rotatably engaged with the motor. The ring assembly and motor drive unit are constructed and arranged to be releasably engaged to each other.

A motorized window treatment system may include a roller tube, a flexible material, a motor drive unit, and mounting brackets. The mounting brackets may include a stationary portion configured to be attached to a structure surrounding a window. The mounting brackets may include a movable portion configured to receive an end portion of a housing of a motor drive unit. The movable portion may be configured to operate the motorized window treatment between the operating position and the extended position in a circular-shaped path. A portion of the motor drive unit may be accessible when the motorized window treatment is in the extended position. The mounting brackets may include a stopping mechanism that is configured to prevent the motorized window treatment from extending beyond the extended position.

A power conversion apparatus includes a converter that rectifies a first AC voltage supplied from an AC source, a capacitor that is connected to an output end of the converter and smooths a first DC voltage rectified by the converter into a second DC voltage including a first ripple, an inverter that is connected across the capacitor and converts the second DC voltage into a second AC voltage corresponding to a desired frequency, and a voltage detection unit that acquires a physical quantity correlated with the second DC voltage, and controls the second AC voltage to superimpose a second ripple correlated with the first ripple on an output voltage of the inverter.

The invention relates to the technical field of 3D printing equipment monitoring, and discloses a flow monitoring method and system for a wire feeding mechanism of a 3D printer, and the method comprises the steps: collecting current signal data of a wire feeding motor drive unit, and carrying out the preprocessing of the current signal data; performing time-frequency analysis on the standardized current characteristic data by using a multi-scale signal analysis algorithm, outputting a high-dimensional current characteristic set, and establishing a characteristic fault mapping relation; a multi-model fault analysis system is adopted to process the high-dimensional current feature set, and fault analysis and positioning are carried out; a progressive three-level early warning mechanism and flow monitoring are realized, and a current flow mapping model is established; continuously optimizing the flow model and the fault identification model, and establishing a dynamically updated fault feature library; wire feeding flow monitoring can be achieved without an additional sensor, and system cost and complexity are reduced.

The present application relates to an intelligent knee joint for human lower limb exoskeleton, prosthesis, or orthosis. The intelligent knee joint reproduces part or all of the biomechanical characteristics of the human knee joint by adopting a motor drive unit in combination with a controllable spring energy storage unit based on a magnetorheological damper, or adopts a controllable resistance unit in combination with a controllable elastic energy storage unit based on a magnetorheological damper, thereby helping the wearer to better reduce the burden of walking and regain or repair the walking function. The motor drive unit operates in generator mode and driver mode, and the energy recovery technology is used to reduce the power consumption of the intelligent knee joint and extend the working time of the device. In addition, the use of a controllable elastic energy storage unit based on a magnetorheological damper further reduces the energy consumption of the intelligent knee joint, while also simplifying the control difficulty of the knee joint.

The invention provides a headlamp position adjusting system based on ripple waves of a brush direct-current motor. The headlamp position adjusting system comprises a whole vehicle height sensor and a steering angle sensor, wherein the whole vehicle height sensor and the steering angle sensor are used for collecting vehicle height and steering data in real time; the MCU control unit receives data of the whole vehicle height sensor and the rotation angle sensor and calculates the number of target rotation turns of the motor and the number of corresponding ripple pulses; the motor driving unit drives the brush direct current motor to operate; the current acquisition circuit acquires a ripple signal in the running current of the motor; the direct-current filter circuit filters direct-current components in the current signals; the ripple amplifying circuit amplifies the filtered alternating current ripple signal; and the ripple conversion circuit converts the amplified ripple signal into a pulse signal which can be identified by the MCU. The brush direct current motor is adopted to replace a traditional stepping motor, a drive circuit only needs a single full bridge, and the hardware cost is reduced by about 50%; a control circuit and a shielding wire harness in the motor are omitted, and the number of wire harnesses and connectors and the manufacturing cost are reduced.

The invention provides an intelligent infusion flow rate accurate control system and method special for children, and relates to the technical field of clinical treatment. The intelligent flow rate accurate control system special for child infusion comprises an infusion control module used for controlling the flow rate of an infusion pump and comprising a motor driving unit and a flow rate sensor; the data acquisition module is used for acquiring relevant parameters of the body weight, age and illness state of the child and monitoring the infusion flow rate and the residual liquid amount in real time; the intelligent calculation module is used for calculating the optimal infusion flow rate according to the collected data in combination with preset infusion rules and algorithms; the user interface module provides a human-computer interaction interface for medical staff to input parameters and check infusion states; and the alarm module is used for sending out an alarm signal when an abnormal condition occurs in the infusion process. Through the automatic control process, the medical staff can concentrate on other important nursing work, the working efficiency is improved, the workload of manually adjusting the flow rate by the medical staff is reduced, and the risk of human errors is reduced.

Photovoltaic electric control shutter hollow glass externally connected with a control box comprises a window body, a shutter blind, an electric driving device, a photovoltaic assembly and a receiver, the shutter blind is arranged in the window body, the electric driving device is arranged in an upper frame of the window body and used for driving the shutter blind to complete lifting and overturning, and the electric driving device is electrically connected with the wireless receiver; the receiver comprises a bottom box, a box cover and a main control circuit board, the main control circuit board is provided with a microprocessor, a power management unit, a photovoltaic charging management unit, a motor driving unit, a wireless signal receiving and processing unit, a key unit and an indicator light unit, and the photovoltaic charging management unit is electrically connected with the photovoltaic module; the wireless receiving device is installed in the upper frame of the hollow glass, the control key box which is externally connected and installed in a lower mode is adopted, the appearance of the hollow shutter glass can be neat, the key control box can be disassembled and assembled according to needs to be debugged and operated, the set height of the control key box better conforms to the using habit of a user, and operation is more convenient.

The invention discloses a pipeline booster compressor inlet guide vane self-adaptive control method which comprises a compressor, the compressor is driven by a main motor, the main motor is controlled by a motor driving unit, an inlet guide vane, a flow sensor and an inlet pressure sensor are installed on an inlet pipeline of the compressor, and the inlet guide vane is controlled by a guide vane driver. An outlet pipeline of the compressor is provided with an outlet pressure sensor; the motor driving unit, the inlet flow sensor, the inlet pressure sensor, the outlet pressure sensor and the guide vane driving unit are all connected with a control unit; according to the method, the principle that when provided steam pressure and pipeline back pressure are not changed, the opening degree of a guide vane is increased, and the flow of a compressor is reduced is utilized. The mode of controlling the opening degree of the inlet guide vane is adopted, when external interference occurs, the working point is automatically changed, self-adaption to constant flow adjustment, overload adjustment and anti-surge adjustment can be achieved, operation of operators is reduced, the shutdown frequency of the compressor is effectively reduced, and the service life of the compressor is prolonged.

The invention discloses an unmanned aerial vehicle parachute throwing device, and belongs to the technical field of unmanned aerial vehicle equipment. Comprising a fault detection module, a trigger control module, a dual-power release module, a parachute storage module, a flight control cooperation module and a parachute ejection mechanism which are installed in an unmanned aerial vehicle body. A fault judgment algorithm is built in the trigger control module; the parachute ejection mechanism comprises an ejection shaft, the lower end of the ejection shaft is connected with a force storage assembly, the ejection shaft is sleeved with a limiting protruding ring, and a limiting column is arranged on one side of the limiting protruding ring and matched with the motor driving unit. The three-axis acceleration sensor, the air pressure sensor, the motor rotating speed sensor and the current sensor are integrated, a synchronous acquisition and automatic switching mechanism of the main sensor and the standby sensor is matched, acquisition interruption caused by faults of a single sensor is avoided, and data acquisition continuity is high. Instantaneous impact force is provided through compressed gas driving, the push rod is driven to be accurately unlocked through gear transmission, and the problems that traditional single power thrust is insufficient and release is slow are solved in cooperation with the double-spring force storage assembly.

A motorized window treatment system includes a motor drive unit physically coupled to a lift assistance subsystem. The lift assistance subsystem provides variable lift assistance to the motor drive unit for raising and lowering a covering material. The lift assistance subsystem includes a gradient spring that travels between a drive drum coupled to the motor drive unit and a storage drum disposed in a housing. A gradient spring travels between the drive drum and the storage drum to provide lift assistance and reduce the input power requirement for the motor drive unit. The housing includes a plurality of spring guide features disposed on an internal surface of the housing.

A power swivel device for a vehicle seat is configured to perform both swivel and monopost functions of the vehicle seat. The power swivel device includes a motor configured to swivel the seat and a reduction gear device configured to increase output torque of the motor, which are stacked in a vertical direction on a bottom of the seat. The power swivel device includes a lower housing; an upper housing stacked on and assembled to the lower housing; an eccentric shaft rotatably disposed relative to the lower housing and the upper housing; a motor driving unit mounted between the lower housing and the eccentric shaft; the reduction gear device installed between the upper housing and the eccentric shaft; and a swivel plate rotatably mounted on the reduction gear device and connected to a seat cushion frame.

A motorized window treatment may include a covering material, a motor drive unit, a headrail, a cover, and one or more mounting brackets. The cover may be configured to enclose at least an upper portion and a rear portion of the headrail. The mounting brackets may be configured to secure the motorized window treatment to a structure. The mounting brackets may include a biasing member that is configured to engage a lower lip of the cover to bias the respective mounting bracket toward the top plate of the cover. The mounting brackets may include a release button that is configured to extend through a gap between the headrail and the top plate of the cover. The release button may be configured to be operated to adjust the motorized window treatment into a service position in which access is provided to at least one battery within the headrail.

The present disclosure provides a stepping motor abnormality detection device capable of detecting an abnormality of a stepping motor. The stepping motor abnormality detection device (100) includes a power supply unit (1), a stepping motor (4), a stepping motor drive unit (3), a determination unit (5), and a control unit (6). The stepping motor drive unit (3) causes the stepping motor (4) to operate by the control unit (6). A current level detection unit (2) acquires a current level during driving of the stepping motor (4) and compares the acquired current level with a threshold value determined in advance by the determination unit (5) to detect an abnormality of the stepping motor (4).

The utility model discloses a light electric single-wheel balance car driven by an external motor. The light electric single-wheel balance car comprises an electric control and seat cushion unit, a suspension lower movable unit, a motor driving unit, a shock absorber, a battery pack unit, a wheel set unit, a pedal and the like. A high-speed motor is used for speed reduction through a gear and power transmission through a constant velocity universal joint, and finally a belt speed reducer is used for driving a wheel set to rotate, so that modular power layout is achieved. Due to the fact that the power / weight ratio of the high-rotating-speed motor is larger, the total weight of the vehicle can be effectively reduced. The suspension structure of the triangular double shock absorbers can reduce the number of components. The upper half part of the universal coupling is fixed in the shell of the driving unit, the lower half sliding part of the universal coupling is positioned below the damping system spring, and the motor is fixedly mounted through the expansion joint of the universal coupling, so that the power unit does not move along with the suspension. Due to the adoption of the modularized structure, the disassembly and maintenance are convenient, and the reassembly and combination are simple and convenient. The last stage adopts belt transmission, noise is reduced, and maintenance is convenient.

A power-driven impact tool is provided. The impact tool includes a motor, a transmission, and a rotary impact mechanism received in a housing. The transmission may be a planetary transmission that reduces a speed of a rotary force output by the motor. The impact tool may be a cordless impact tool, receiving power from a battery back that is removably coupled in a battery receptacle of the housing. First and second handles on the housing may provide for user stability and control during operation of the impact tool. A plurality of user selection devices, including a trigger, a forward / reverse switch, and a mode selector, may be provided on one of the handles for user control of the impact tool.

A four-motor hub motor device with a WW wheel train is disclosed, comprising four motor units, each including a motor drive unit and a motor body unit. The motor shaft of the motor body unit is connected to the input end of a reduction system via an input gear. The output end of the reduction system is connected to the wheel hub, and the wheel hub is connected to the tire, realizing power output and transmission. The reduction system includes an internal gear ring meshing with the input gear. The internal gear ring is connected to a double planetary gear shaft via a double planetary gear shaft. One side of the double planetary gear meshes with a fixed-end sun gear, which is connected to the wheel hub shaft. The other side of the double planetary gear meshes with an output-end sun gear, which is connected to the wheel hub and supported on the wheel hub shaft by a bearing system, transmitting the motor power to the wheel hub. This invention, through the four-motor hub motor device with a WW wheel train, achieves multi-motor power distribution, offering advantages such as safety, reliability, high energy utilization, convenient heat dissipation, and compact structure.

A motor control device according to an embodiment of the present invention comprises: a motor driving unit including a plurality of switches and supplying driving power to drive a motor; a sensing unit that measures an output current of the motor driving unit; and a control unit that controls the plurality of switches, wherein the control unit estimates a phase current of the motor driving unit by using the output current measured by the sensing unit, estimates a temperature estimation parameter by using the estimated phase current, estimates the temperature of the motor by using the temperature estimation parameter, and controls the plurality of switches according to the estimated temperature.

The invention discloses a power switching system and an automobile. The power switching system comprises a motor shaft capable of being driven by a motor driving unit, a gear shifting cam ring capable of being driven by the motor shaft to rotate, the gear shifting cam ring comprises a first inclined face and a clutch cam ring, and the clutch cam ring comprises a second inclined face. The clutch cam ring is provided with a first inclined plane and a second inclined plane, the first inclined plane can be matched with the second inclined plane, when the gear shifting cam ring rotates in the first direction, the first inclined plane can apply acting force to the second inclined plane so that the clutch cam ring can move away from the gear shifting cam ring in the axial direction, and the parking cam can be driven by a motor shaft to rotate. The parking cam can drive the parking pawl to swing around the pawl shaft so as to lock the parking gear. According to the power switching system, the arrangement of the power switching system can be optimized.

The device comprises: a first housing housing a power conversion device; a first connector mounted on the first housing and having contacts electrically connected to the power conversion device housed in the first housing; and a busbar having conductivity. A second housing is disposed adjacent to the first housing and disposed side by side. The second housing is fitted with a second connector having the same configuration as the first connector and having the same function as the first housing. In this case, the busbar temporarily disposed near the first connector slides toward the second connector and electrically connects the contacts of the first connector and the contacts of the second connector by means of the busbar, thereby electrically connecting the power conversion device housed in the first housing with the power conversion device housed in the second housing.

A motorized window treatment may include one or more mounting brackets and a window treatment assembly supported by the one or more mounting brackets. The window treatment assembly may include a covering material that is operable between a raised position and a lowered position. The window treatment assembly may include a bottom bar comprising an energy storage element. The motorized window treatment may include a motor drive unit comprising a motor configured to rotate to adjust the covering material between the raised position and the lowered position. The motorized window treatment may include a dock configured to be electrically coupled to the motor drive unit. The bottom bar may be configured to be positioned adjacent to the dock when the covering material is in the raised position, such that the energy storage element is configured to charge through the dock and the motor drive unit.

A control device includes: a print data acquisition unit configured to acquire print data, which is formed of a plurality of lines and indicates a coloration state of each pixel included in the plurality of lines; a head drive unit configured to supply, to a thermal head formed of a plurality of heating elements each corresponding to the pixel, an electric current for heating the thermal head for each pixel; a motor drive unit configured to supply, to a motor configured to move heat-sensitive paper relative to the thermal head, a drive current for step driving the motor for each line; a speed control unit configured to control, based on the number of colored pixels of a determination subject line among yet-to-be-printed lines of the print data, a relative moving speed of the heat-sensitive paper moved by the motor; and a preheating control unit configured to cause the head drive unit to output, when the determination subject line is a specific line being a line in which the number of colored pixels of the determination subject line exceeds a predetermined value, a preheating current being an electric current for heating the thermal head to such a degree as to prevent coloring of the heat-sensitive paper by a time the specific line is printed.

The present invention provides a motor drive device including a switch having mechanical opening and closing contacts, wherein the opening and closing contacts of the switch are connected between the other ends of each phase winding of a motor. The electrical path between each phase winding of the motor and the opening and closing contacts has an impedance value sufficient to suppress a sudden change in the voltage across each upper switching element and each lower switching element in a second inverter, thereby preventing damage to the upper switching element and each lower switching element.

A motor assembly for driving a pump or rotary device features a power plane with a circular geometry to be mounted inside a space envelope having a similar circular geometry formed on an end-plate between an inner hub portion and a peripheral portion that extends circumferentially around the space envelope of the end-plate. The power plane is a multi-layer circuit board or assembly having: a power layer with higher temperature power modules for providing power to a motor, a control layer with lower temperature control electronics modules for controlling the power provided to the motor, and a thermal barrier and printed circuit board layer between the power layer and the control layer that provides electrical connection paths between the power modules of the power plane and the control electronics modules of the control layer, and also provides insulation between the power layer and the control layer.

To provide a hybrid drive system that significantly reduces the overall volume, has a simplified structure, is stable, has high transmission efficiency, and improves the riding experience and range of an electric bicycle. [Solution] The hybrid drive system includes a central power module 312 and a rear power module 313. The central power module has a central drive assembly coaxially mounted within the central module housing. The central drive assembly is a human-powered or human-powered hybrid drive system that receives power from a human or receives power from a central motor drive unit. The rear drive assembly includes a rear motor drive unit or a transmission. The rear motor drive unit passively rotates with the central drive assembly in a driven state and actively rotates in a driven state. The transmission changes the gear ratio according to the power of the central drive unit and is connected to the drive wheels via the rear power output terminal. This invention provides multiple drive combinations suitable for different applications.

The present application provides a single soldier combat flying umbrella, relates to aviation power and single soldier flying equipment technical field, in order to solve the efficiency, noise and safety problem of traditional propeller propulsion system, the present application discards propeller, and adopts the innovative power system consisting of coaxial reverse motor drive unit, tilt linkage mechanism and gravity ball.Electric motor drives gravity ball to do circular motion, utilizes the centrifugal force component as the source of propulsion and lift, and utilizes gyroscopic effect to enhance stability. Through controlling the speed difference of two electric motors, accurate attitude control can be realized. The system has the advantages of compact structure, high efficiency, extremely low noise, good safety and strong environmental adaptability, and is especially suitable for military single soldier mobility, special operation and civil leisure flight and other fields.

The interlock circuit (4) of the existing motor control device (13) is complex, large-sized, heavy, and costly. The motor control device (10) according to the present application includes a motor drive unit (3) that supplies current to a motor (6); a motor control unit (15) that sends a control signal to the motor drive unit; and a cut-off device (7) that is provided between the motor control unit (15) and the motor drive unit (3) and cuts off the control signal from the motor control unit (15) to the motor drive unit when the control signal deviates from a predetermined range. As a result, a large circuit is not required, abnormalities can be determined based on the output of the motor control unit (15), and the motor drive unit (3) is cut off during abnormality determination. Thus, it is possible to obtain a device that has an effective cut-off circuit while suppressing the enlargement, weight increase, and cost increase of the motor control device (10).

An open / close body control device includes a motor drive unit and a control unit. The motor drive unit outputs a predetermined application voltage to a motor based on a control command from the control unit. The control unit is configured to set a target speed of the motor to a closing-time target speed that ensures a torque required for closing the open / close body when the open / close body reaches a first position that is ahead of a closing position, and perform feedback control on the motor drive unit, and stop the feedback control when the open / close body reaches a second position that is closer to the closing position than the first position, and control the motor drive unit so that the application voltage of the motor at that time is maintained.

The invention relates to the technical field of motor control, and discloses a motor driving system integrated with a vehicle-mounted charger and an electric vehicle, the motor driving system comprises a first motor driving unit, a first switch unit, a first motor, the vehicle-mounted charger and a controller; the output end of the first motor driving unit is connected with the first motor; the alternating current output end of the vehicle-mounted charger is connected with the first motor through the first switch unit; and the controller is connected with the control end of the first switch unit and is used for controlling the on / off state of each switch in the first switch unit when a motor driving instruction is received and the vehicle-mounted charger is in a non-charging working condition, so that the bridge arm of the vehicle-mounted charger and the bridge arm of the first motor driving unit are used for jointly driving the first motor. According to the invention, the functionality of motor control is improved.