308results about "DC motor rotation control" patented technology

A system for opening or closing a closure member of a vehicle and an accelerometer calibration method are provided. The system includes an actuator assembly with an electric motor operably coupled to an extensible member for opening or closing the closure member. The system also includes an accelerometer configured to sense movement of the closure member and output an accelerometer signal. An actuator controller is coupled to electric motor and to the accelerometer and is configured to determine an adjusted accelerometer signal as the accelerometer signal adjusted using one of a plurality of predetermined compensation factors determined through an accelerometer calibration process temporally before installation of the accelerometer in the vehicle. The actuator controller then controls the opening or closing of the closure member using the electric motor based on the movement of the closure member as represented by the adjusted accelerometer signal.

The invention relates to the technical field of direct current motor driving, and provides a high-speed direct current motor driving system which comprises a control module, a driving module and a feedback module and is based on an analog switch and an FPGA. By implementing the scheme, in the first aspect, the two sides of the direct current motor of the middle bridge arm of the full-bridge power circuit are each connected with a sampling resistor in series, and high-precision bidirectional current measurement of the direct current motor is achieved and the reliability of a driving system is improved through full-path detection and common-mode rejection under the condition that the power extension time and power consumption are not increased; and on the second aspect, the common-mode input voltage of the operational amplifier is relatively small through the use of the analog switch and the amplitude limiting diode, and the operational amplifier is not required to be limited by high common-mode voltage, so that the type of the operational amplifier with higher response speed can be selected. And thirdly, a fault detection unit and a redundancy check unit are arranged in the FPGA, and the safety and the reliability of the system are improved through cooperative work of the FPGA, a double-sampling resistor, an amplitude limiting diode and an analog switch.

In some examples, this disclosure describes a method that comprises controlling power switches to deliver a current to an electric motor, wherein the power switches are arranged in a bridge (e.g., an H-bridge or an h-bridge) comprising a first high-side power switch, a first low-side power switch, and a second low-side power switch. Controlling the power switches to deliver the current to the electric motor may include controlling the first high-side power switch ON and controlling the second low-side power switch ON, wherein the current to the electric motor flows through the high-side power switch and through the second low-side power switch. The method may comprise determining the current to the electric motor based on a voltage drop over one of the power switches arranged in the bridge.

The utility model relates to a motor control system for a movable sofa. The motor control system comprises a motor, a power supply, a manual control switch and an anti-pinch execution switch, wherein the anti-pinch execution switch can be switched between a first execution position and a second execution position; in the first execution position, the motor is connected to the manual control switch through the anti-pinch execution switch, and the polarity of the voltage applied to the motor by the power supply is changed through switching of the manual control switch; and in the second execution position, the motor is connected to the power supply through the anti-pinch execution switch, and the motor rotates and drives the movable sofa to stretch so as to realize anti-pinch. The utility model also relates to a movable sofa with the motor control system.

The invention discloses a direct current motor control and automatic detection system and method, the system comprises an upper computer, a lower computer and a CAN bus communication unit, the upper computer comprises a calibration module, a position control module, a self-inspection module and a communication interface, and the calibration module is used for initiating an automatic calibration instruction and receiving and displaying a calibration result; the position control module is used for generating a target position instruction and receiving and dynamically displaying the real-time position of the motor; the self-checking module is used for initiating a one-key self-checking instruction and displaying a self-checking result; the lower computer comprises a main control chip, the main control chip is provided with an H-bridge driving circuit and an encoder acquisition circuit, the H-bridge driving circuit is used for driving the direct current motor to rotate forwards and backwards, and the encoder acquisition circuit is used for acquiring motor position signals; the CAN bus communication unit is connected with the communication interface of the upper computer and the main control chip of the lower computer through the USB to CAN module; according to the invention, faults can be automatically detected in the production and use processes of the DC motor, and the efficiency of production personnel and the product quality are improved.

The utility model provides a relay control motor drive circuit comprising a power supply circuit; according to the H-bridge motor driving circuit, two ends of a motor are electrically connected with a motor power supply through an output end of a relay respectively, two ends of the motor are further electrically connected with one end of a first resistor through the output end of the relay respectively, and the other end of the first resistor is grounded; the first coil end of each relay is electrically connected with the output end of the power supply circuit, the second coil end of each relay is electrically connected with the output end of an electronic switch, and the input end of each electronic switch is grounded; the input end of the current acquisition circuit is electrically connected with the output end of one relay; and the control end of each electronic switch and the output end of the current acquisition circuit are electrically connected with the main control chip. According to the utility model, the four relays and the four electronic switches form an H-bridge motor driving circuit, so that the H-bridge motor driving circuit can bear switch control under higher voltage, and forward rotation and reverse rotation of the motor under high voltage can be conveniently controlled.

To provide a control device, a control method, and a control system capable of suppressing control instability caused by changes in a controlled object due to external factors.SOLUTION: A control device according to an embodiment that controls a controlled object includes a first controller, a second controller, a detector, and a corrector. The first controller receives as input a first measurement value measured by the controlled object and a first command value that is a target value of the first measurement value, and generates a second command value. The second controller receives as input a second measurement value measured by the controlled object and the second command value, and generates a target value to be supplied to the controlled object as a third command value. The detector detects a change in the second measurement value due to an external factor of the controlled object, and changes the control mode. The corrector generates a second correction value according to the control mode, and corrects the second controller.SELECTED DRAWING: Figure 2

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 discloses an emulsion pump loading valve speed regulation control system and a working method thereof. The emulsion pump loading valve speed regulation control system comprises a servo motor, a servo driver and an upper computer. The working method comprises the following steps: S1, inputting a pressure set value of the loading valve of the emulsion pump; s2, the upper computer calculates the input pressure set value of the loading valve of the emulsion pump through a PID (Proportion Integration Differentiation) controller to obtain a required rotating state and a required rotating speed of a servo motor and transmits the required rotating state and the required rotating speed to a servo driver; s3, controlling a servo motor by a servo driver, and enabling the servo motor to drive an emulsion pump loading valve to work; s4, the pressure sensor feeds back the pressure acquisition value to the upper computer; s5, the upper computer carries out comparison calculation on the pressure parameters of the loading valve of the emulsion pump through a PID (Proportion Integration Differentiation) controller; and S6, the servo driver adjusts and controls the servo motor according to the comparison calculation result, and precise pressure control over the loading valve of the emulsion pump is achieved.

An electric apparatus includes: an electricity storage device; a rotary electric machine including an α-phase first coil and an α-phase second coil; and an electric power control unit that controls electric power transfer of each of the electricity storage device and the rotary electric machine. The electric power control unit includes: a first full-bridge circuit connected to both ends of the α-phase first coil; and a second full-bridge circuit connected to both ends of the α-phase second coil. When electric power is transmitted via the α-phase first coil and the α-phase second coil between the first full-bridge circuit and the second full-bridge circuit, the electric power control unit controls a phase difference between the first full-bridge circuit and the second full-bridge circuit in a range that includes 90° to 180°.

The integrated circuit (100A) 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 inductor. A current sense FET (SNS-DRV) is coupled between a current source (110) and a lower supply voltage to provide a reference current (Itrip) including a peak current limit at the sense node. A current sense comparator (104) has a first input coupled to the sense node, a second input coupled to a second output node, and an output (113) coupled to send an output signal to a driver control circuit. A FET linear detection circuit (112) is coupled to receive a gate voltage (LS2) of an active low-side power FET (Mls2) and has an output (CMP_EN) coupled to enable the current sense comparator when the active low-side power FET is operating in its linear region.

According to one aspect of an exemplary embodiment of the disclosure, an imaging device or system (10) includes at least one motor (130) controlled by a motor drive. The motor (130) is selected from one of multiple motors (130) operable by the motor drive. A motor controller (120) is operative to output a modulated voltage to the motor (130), where the modulated voltage does not cause rotation of the motor (130). As the motor controller (120) outputs the modulate voltage, either the resultant voltage or the resultant current through the motor (130) is measured. The motor controller (120) uses the measured voltage or current to identify which of the multiple motors (130) is connected to the motor controller (120) and set at least one parameter in the motor controller (120) corresponding to the identified motor (130).

The invention relates to the field of power electronics, in particular to a current detection circuit of a half-bridge circuit and a control method of the current detection circuit. The current detection circuit of the half-bridge circuit comprises a detection circuit, the detection circuit comprises a detection power device, the detection power device comprises a control end, a first end and a second end, the control end of the detection power device is used for controlling connection and disconnection of a power device, and the first end and the second end of the detection power device are connected when the detection power device is connected; the first end of the detection power device is configured to be the first end of the detection circuit, the second end of the detection power device is connected with the first input end of a comparator, the second input end of the comparator is configured to be the second end of the detection circuit, and a detection resistor is arranged between the first input end and the second input end of the comparator. The current detection circuit of the half-bridge circuit can detect the current in the half-bridge circuit.

The invention provides an electromagnetic interference suppression method and device for a PWM signal, electronic equipment and a storage medium, and relates to the technical field of vehicles, and the method comprises the steps: obtaining a PWM signal generated by a drive circuit and an original drive frequency of the PWM signal, the original drive frequency being a higher harmonic frequency corresponding to the PWM signal; at least one first target driving frequency corresponding to the original driving frequency is determined, the first target driving frequency is different from the original driving frequency, the first target driving frequency is any driving frequency in a preset driving range, and the at least one first target driving frequency is not completely the same; and controlling the driving circuit to drive based on the at least one first target driving frequency. According to the invention, the electromagnetic interference of the PWM signal can be effectively suppressed, and the harmfulness of EMI radiation interference is reduced.

The utility model provides an H-bridge drive circuit with overcurrent detection. The H-bridge drive circuit comprises a first drive circuit, a second drive circuit, a first switch circuit connected with the first drive circuit, and a second switch circuit connected with the second drive circuit. The first switching circuit comprises a first switching device and a second switching device; a third port of the second switching device is connected in series with the first sampling resistor and grounded; the second switching circuit comprises a third switching device and a fourth switching device; and a third port of the fourth switching device is connected in series with a second sampling resistor and grounded. According to the utility model, through the first sampling resistor and the second sampling resistor, current detection is carried out on the switching device in the H-bridge driving circuit, the response speed is fast, and through combination with the overcurrent protection circuit, when overcurrent is detected, for example, the switching device is not effectively switched on or switched off, the circuit is triggered to be switched off, so that the purpose of protecting the circuit is achieved.

The utility model discloses a driving circuit, an electric toothbrush body and an electric toothbrush, the driving circuit comprises a first switch circuit and a second switch circuit, the input end of the first switch circuit is connected with a battery, and the output end of the first switch circuit is respectively connected with the input end of the second switch circuit and a first electrode of a motor; the output end of the second switching circuit is grounded; the input end of the third switching circuit is connected to the battery, the output end of the third switching circuit is connected with the input end of the fourth switching circuit and the second electrode of the motor, and the output end of the fourth switching circuit is grounded; the main control circuit is respectively connected with the controlled end of the first switching circuit, the controlled end of the second switching circuit, the controlled end of the third switching circuit and the controlled end of the fourth switching circuit; the electric toothbrush aims at solving the technical problem that an existing electric toothbrush is single in movement mode.

The application discloses a control method of a scrubber booster wheel and the scrubber, a booster motor is connected to the booster wheel, the control method of the scrubber booster wheel comprises the following steps: judging whether the booster motor poles generate electric potential or not; if the booster motor poles generate electric potential, acquiring the electric potential direction; and controlling the booster motor to work according to the electric potential direction generated by the booster motor. According to the control method of the scrubber booster wheel, the user is provided with power assistance when operating the scrubber, the user is facilitated to operate, and the user's physical strength is saved. Meanwhile, no additional sensing device is needed, the structure is simplified, and the cost is reduced.

An integrated circuit (100A) includes an H-bridge circuit (102) having a first output node (OUT1) for coupling to the high-side terminal of an inductor (103) and a second output node (OUT2) for coupling to the low-side terminal of the inductor. A current-sensing FET (SNS-DRV) is coupled between a current source (110) and a lower supply voltage to provide a reference current (Itrip), including a peak current limit at the sensing node. A current-sensing comparator (104) has a first input coupled to the sensing node, a second input coupled to the second output node, and an output (113) coupled to send an output signal to a driver control circuit. A FET linearity detection circuit (112) is coupled to receive the gate voltage (LS2) of an active low-side power FET (Mls2) and has an output (CMP EN) coupled to enable the current-sensing comparator when the active low-side power FET operates in the linear region.

The invention discloses a motor forward and reverse rotation driving circuit and system, and the circuit comprises a reference voltage supply circuit which is provided with a reference voltage output end; the first reference voltage providing circuit is provided with a first reference voltage output end; the reference voltage output end and the first reference voltage output end are respectively connected with the first comparator circuit; wherein the reference voltage is gradually changed from the first reference voltage to the second reference voltage, the first reference voltage is located between the first reference voltage and the second reference voltage, so that the reference voltage is smaller than the first reference voltage in a first time period and larger than the first reference voltage in a second time period, and the first time period and the second time period are not overlapped; and the first comparator circuit is connected with the motor driving circuit. When the motor rotates positively and negatively, a single chip microcomputer is not needed, the cost is reduced, software burning is not needed, and the process is simple during mass production.

The embodiment of the utility model provides a motor positive and negative rotation control circuit and system and a clothes airing machine, and relates to the technical field of electronic circuits. The circuit comprises a first module which comprises an H-bridge circuit composed of MOS tubes, and the H-bridge circuit is respectively connected with two ports of a motor; the second module comprises a bypass capacitor and a first resistor which are connected in parallel; wherein the first module is respectively connected with the control chip, the power supply, the ground and a port for providing working voltage; the positive electrode end of the second module is connected to a branch where the first module is connected with the power supply and the port for providing the working voltage, and the other end is grounded. The precision and stability of motor control can be improved, and the cost is reduced.

The embodiment of the application provides a window-cleaning robot motor rotation direction detection method and related device, and relates to the cleaning technical field.The method comprises the following steps: obtaining a pulse signal of a detection sensor; the detection sensor comprises a single-phase Hall sensor and / or a single-phase photoelectric sensor; and the rotation direction of the motor is determined according to the characteristics of the pulse signal.The above method replaces the traditional dual-phase Hall sensor or dual-phase photoelectric sensor with the single-phase Hall sensor and / or the single-phase photoelectric sensor, uses the time sequence characteristics of the pulse signal output by the single-phase Hall sensor and / or the single-phase photoelectric sensor to realize high-precision and high-reliability detection of the motor rotation direction, and effectively reduces the complexity of the cost system of the window-cleaning robot.

The application provides a motor braking device, which comprises a frame, a first solenoid for controlling the forward rotation of the motor and a second solenoid for controlling the reverse rotation of the motor are arranged in the frame respectively; the first solenoid and the second solenoid each comprise a coil, a moving iron core and a static iron core, the static iron core is sleeved on one end of the moving iron core, and the coil is arranged on the outer side of the moving iron core and the static iron core; one end of the moving iron core is arranged outside the static iron core and connected with a first driving element, the other end of the moving iron core is connected with a second driving element, the first driving element is connected with a driving switch, and the second driving element is connected with a limit switch through a third driving element. The two solenoids are arranged to control the forward and reverse rotation of the motor respectively, the coils of the two solenoids are electrified to control the forward and reverse rotation of the motor respectively, and the coils are automatically connected with a standby braking circuit after losing electricity; when a switch SL3 in the electric circuit is actuated, the motor is instantaneously braked, and the braking is rapid and reliable.

The invention discloses a control mechanism of a sliding massager and a control method thereof, and relates to the field of massagers, the control mechanism comprises a frame body, a sliding rail arranged in the frame body, a slidable sliding block installed on the sliding rail and a connecting block fixed on the sliding block, and the connecting block penetrates through a through groove formed in the frame body and is fixedly provided with a massage part; the belt displacement control mechanism is arranged in the frame body; the driving wheel and the driven wheel are arranged on the left side and the right side of the frame body, the transmission belt is in meshing transmission with the driving wheel and the driven wheel, and the transmission belt located below the sliding block penetrates through the sliding block, is fixedly connected with the sliding block and is used for driving the driving wheel to operate. The stroke and speed of the massage part where the sliding block is located are controlled through the servo motor, so that multiple massage modes can be switched, and different parts of the body can be massaged to different degrees.

The utility model provides a three-station motor control system. The three-station motor control system comprises a power supply module, a station detection module, a main control module, a first driving module, a second driving module and a man-machine interaction module, the power supply module is used for supplying power; the station detection module is used for detecting the station state of the three-station main switch and sending a station detection signal to the main control module; the main control module controls the corresponding action of the motor through the first driving module and controls the corresponding action of the electromagnetic brake through the second driving module according to the station detection signal; the motor is used for driving the three-station main switch to perform station switching; the electromagnetic brake is used for braking the motor; according to the utility model, the station state of the three-station main switch can be detected in real time, so that the main control module can control the motor and the electromagnetic brake to perform corresponding actions, and the station state of the three-station main switch can be displayed.

This application discloses a drive circuit, chip, and electronic device. The drive circuit includes an operational amplifier constant-current source circuit with an operational amplifier, a first switch coupled to the second node, a first resistor, and a second resistor; an H-bridge circuit with diagonally arranged second and fifth switches and third and fourth switches, configured to provide drive current to a motor; a switching circuit coupled to the second node, and control terminals of the second and third switches, configured to connect the second node to the control terminal of the second switch based on a valid first control signal, and / or to the control terminal of the third switch based on a valid second control signal; and a matching resistor coupled to the H-bridge circuit and ground voltage. This configuration provides stable and precise motor drive current even in high-frequency environments.

The application relates to the technical field of motor driving control, in particular to a diagonal synchronous PWM control method and system for an H-bridge motor, which can simplify control logic, reduce dependence on MCU resources, improve low-speed performance, and improve the reliability of the system; a pulse width modulation signal and a direction control signal are acquired, wherein the direction control signal is used for indicating a target current direction; when the direction control signal indicates a first direction, the switching states of a first upper tube and a second lower tube of the H-bridge are controlled to be synchronous with the pulse width modulation signal, and the switching states of a first lower tube and a second upper tube are controlled to be synchronous with a complementary signal of the pulse width modulation signal; when the direction control signal indicates a second direction opposite to the first direction, the switching states of the first upper tube and the second lower tube of the H-bridge are controlled to be synchronous with the complementary signal of the pulse width modulation signal, and the switching states of the first lower tube and the second upper tube are controlled to be synchronous with the pulse width modulation signal.

The invention belongs to the technical field of motor driving, and particularly relates to a motor control circuit and an overcurrent protection control method, and the motor control circuit comprises the components of a first control circuit of which the input end is connected with a first pin for receiving a first control signal and the output end is connected with a first electrode; the input end of the second control circuit is connected with the second pin for receiving a second control signal, and the output end of the second control circuit is connected with the second electrode; the overcurrent protection circuit is respectively connected with the first control circuit, the second control circuit and the motor driving chip; the first control circuit and the second control circuit can control forward rotation and reverse rotation of the motor according to the first control signal and the second control signal respectively; the overcurrent protection circuit can output a control signal to the motor driving chip when the motor is in a forward / reverse rotation state so as to control the working state of the motor according to the control signal. According to the scheme, the working state of the motor can be controlled according to the current in the forward / reverse rotation control circuit, motor overcurrent is avoided, and the motor is protected.

The invention discloses a packaging structure of an H-bridge circuit and a motor control system. The packaging structure comprises a first base island, a second base island, a third base island, a fourth base island, a fifth base island, a first pin, a second pin, a third pin, a fourth pin, a first field effect transistor, a second field effect transistor, a third field effect transistor and a fourth field effect transistor. The first field effect transistor, the second field effect transistor, the third field effect transistor and the fourth field effect transistor are arranged into a rectangle, the third field effect transistor and the fourth field effect transistor are inversely arranged when the first field effect transistor and the second field effect transistor are positively arranged, or the third field effect transistor and the fourth field effect transistor are positively arranged when the first field effect transistor and the second field effect transistor are inversely arranged; therefore, the purpose of packaging the H-bridge circuit in a compact space can be achieved, the H-bridge circuit packaging structure has the advantages of being simple in wire arrangement and reasonable in layout, and the requirements for high integration and high density of an integrated circuit are met.

The utility model discloses a motor control system of an automobile seat. The motor control system comprises a control module, a relay driving module, a speed regulation driving module and a motor driving module, the relay driving module comprises a plurality of relays; the positive electrodes of the motors of the multiple automobile seats are all connected with the same relay, and the negative electrodes of the motors of the automobile seats are connected with the relays in a one-to-one mode. According to the motor control system of the automobile seat, one relay is used for controlling the positive electrodes of the motors of all the automobile seats, other relays independently control the negative electrodes of the motors of the automobile seats, a parallel relay driving circuit of the motors of the automobile seats is achieved, and then the motors of the automobile seats can be connected in series and in parallel through special series-parallel connection of the relays. The use number of relays is effectively reduced, and the cost of the motor driving circuit of the automobile seat is reduced; and meanwhile, the speed regulation of the motor can be realized while the positive and negative rotation of the motor is ensured, and the problem that the traditional relay control circuit cannot regulate the speed is solved.

The utility model relates to a high-low voltage isolation system for a motor, and relates to the technical field of motor control, the high-low voltage isolation system comprises an H-bridge driving circuit, a first optical coupling isolator and a second optical coupling isolator, the H-bridge driving circuit comprises a forward rotation control end and a reverse rotation control end; the signal output end of the single-chip microcomputer is in signal connection with the input end of the first optical coupling isolator, and the output end of the first optical coupling isolator is electrically connected with the forward rotation control end of the H-bridge drive circuit. The signal output end of the single-chip microcomputer is in signal connection with the input end of the second optical coupling isolator, and the output end of the second optical coupling isolator is electrically connected with the reverse control end of the H-bridge drive circuit. The first optical coupled isolator receives a low-level signal and is communicated with the forward rotation control end, and the second optical coupled isolator receives a high-level signal and is communicated with the reverse rotation control end. According to the invention, the single-chip microcomputer and the H-bridge control circuit can be isolated, and isolation protection is provided for the single-chip microcomputer.