146results about "Stopper details" patented technology

The invention discloses an intelligent start-stop control method and system for a magnetic suspension refrigeration compressor, and the method comprises the steps: obtaining a position perception enhancement source through collecting and analyzing the current response data of a magnetic bearing coil, and extracting the current response change characteristics; rotor position estimation is carried out based on current response change characteristics, a positioning precision driving source is extracted from estimation deviation, and a non-impact starting excitation current instruction is generated; a multi-sensor fusion data network is established, configuration is reconstructed through an abnormal response activation signal, and a degradation operation fault-tolerant mode is formed; converting a response preparation gain according to the shutdown instruction signal, performing shutdown state evaluation in combination with signal reconstruction configuration, and generating an emergency shutdown trigger condition; and the power supply state of a bus capacitor is detected, gradient control potential is released, the active damping control opportunity is determined, a damping force control instruction is generated, finally intelligent start-stop control over the magnetic suspension refrigeration compressor is achieved, and safe and reliable operation of the system under various working conditions is ensured.

An example aircraft includes a parallel propulsion unit, the parallel propulsion unit comprising: a propulsor configured to provide forward propulsion of the aircraft; a gas turbine engine configured to drive the propulsor; an electrical machine configured to generate, for output via one or more electrical busses, electrical energy using mechanical energy derived from the gas turbine engine; and a power sharing module configured to control a ratio of the mechanical energy used to drive the propulsor and used to generate electrical energy; and a plurality of series propulsion units, each series propulsion unit comprising a respective propulsor of a plurality of propulsors that are configured to provide vertical propulsion of the aircraft and a respective electrical machine of a plurality of electrical machines, each respective electrical machine configured to drive a respective propulsor of the plurality of propulsors using electrical energy received from one or more electrical busses.

The invention provides a reciprocating tool and a method of controlling an electric motor of the reciprocating tool. One aspect of the present invention relates to a reciprocating tool comprising a reciprocating member, an electric motor, a transmission device, a control circuit, a drive circuit, a position detector, and a signal cut-off circuit. The drive circuit (i) receives at least one drive signal, and (ii) drives the electric motor in accordance with the received at least one drive signal. The position detector outputs a position detection signal whenever the reciprocating member reaches a predetermined position during at least one reciprocating operation. The signal cut-off circuit cuts off at least one drive signal for the drive circuit in response to the position detector outputting the position detection signal.

The invention relates to the technical field of motor driving control, and discloses a motor driving method with low delay response. The method comprises the steps of collecting real-time operation parameters such as motor speed data, position data and current data, determining a low-delay control model based on the parameters, generating a dynamic adjustment instruction by using the model and applying the dynamic adjustment instruction to a motor driving system, and executing feedback calibration operation according to motor response data so as to update the model. Parameters are collected in real time, and an adaptive control model is constructed, so that a control instruction can be changed along with the running state of the motor, and the lag of an intermediate link is reduced; the dynamic adjustment instruction directly acts on the driving system, and the response speed is increased; the feedback calibration criterion compensates performance drift through continuously optimizing the model, and ensures that the motor keeps stable dynamic performance under different working conditions. The method can enhance the response capability of the motor in the scenes of load sudden change, speed switching and the like, improve the synchronism of multi-motor cooperation, reduce mechanical wear, and is suitable for various motor types and application scenes.

The present disclosure relates to an electronic parking brake system and a control method thereof. The electronic parking brake system includes an electronic parking brake that includes an electronic parking brake actuator applied by a motor. The electronic parking brake system includes a current sensor configured to detect a current flowing in the motor. The electronic parking brake system includes a processor configured to control a parking apply operation of the electronic parking brake. The electronic parking brake system includes a memory configured to store an inrush current generated during the parking apply operation of the electronic parking brake in a no-load condition. The processor calculates an inrush current model based on the inrush current and may accurately estimate and remove the inrush current generated during the parking apply operation by modeling the inrush current when there is no external load.

The utility model discloses an anti-lock brake circuit capable of reducing mechanical shock of a servo motor, which comprises a direct-current power supply, a relay, a diode and a brake coil, the anode of the direct-current power supply is connected with the anode of the diode through the relay, the cathode of the diode is connected with one end of the brake coil, and the cathode of the direct-current power supply is connected with the other end of the brake coil; an oscillating circuit formed by connecting a resistor and a capacitor in series is connected with the brake coil in parallel, and the resistor is connected with the cathode of the diode. The utility model not only can solve the problems of'mechanical impact 'and'flexible braking' frequently occurring in emergency, but also can reduce the braking burden, prolong the service life of equipment and improve the precision of the equipment.

A motor drive circuit comprising: a first motor (111) and a second motor (112) for releasing or actuating a parking brake applied to different wheels (101, 103, 105, 107); and a first ECU (10) and a second ECU (20) for controlling the drive of the first motor (111) and the second motor (112), respectively, wherein the second ECU (20) is prevented from interfering with the drive of the first motor (111) and the second motor (112), while the first ECU (10) drives the first motor (111) and the second motor (112), and controls the drive of the first motor (111) and the second motor (112) only when an anomaly is present in the first ECU (10), and the first ECU (10) has the following features: a first MCU (11) for confirming a release or actuation state of an electronic parking brake; a first control device (12) for outputting a switching control signal according to the control of the first MCU (11); a first power supply device (13) which is switched according to a switching control signal from the first control device (12) to change the direction of a current and to supply the first motor (111) and the second motor (112) with the current respectively; and a first selection device (15) for selectively supplying the first motor (111) and the second motor (112) with the current from the first power supply device (13), or for controlling the supply of the first power supply device (13) with a current from a battery (BAT).

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.

A braking controller arrangement, a drive system, a vehicle, and a method of control. The braking controller arrangement includes a link circuit, a first semiconductor, a second semiconductor, a third semiconductor, a fourth semiconductor, and a resistor. The link circuit is electrically connected to terminals of a battery. The semiconductors are configured to be operated with a duty cycle of 50%.

The invention relates to an extensible architecture for safe torque shutdown and safe brake control. A control system for a safe torque off (STO) operation and a safe brake control (SBC) operation is provided. The control system includes a motor; a brake; and a Driver Secure Interface Board (DSIB), the Driver Secure Interface Board (DSIB) comprising: a first portion of a first circuit for completing the STO operation; a first portion of a second circuit for completing the SBC operation; and a monitoring circuit for monitoring the STO operation and the SBC operation.

It is an object of the present invention to provide an electric brake device capable of accurate control at low cost. The present invention includes a motor control device 11 that controls rotation of an electric motor 8 for pressing brake pads 5a, 5b. The motor control device 11 is provided with: a motor position-current relationship generation portion 43 that acquires a relationship between the rotational position and the current of the electric motor 8; a braking torque estimation portion 41 that estimates braking torque pressing the brake pads 5a, 5b, on the rotational position of the electric motor 8; and a braking torque-position relationship portion generation portion 42 that acquires a relationship between the rotational position and the braking torque of the electric motor 8 on the basis of information from the motor position-current relationship generation portion 43 and the braking torque estimation portion 41. The rotation of the electric motor 8 is controlled on the basis of information from the braking torque-position relationship portion generation portion 42.

Systems and methods of optimizing electric motor shutdown timing are disclosed. One system includes a machine comprising an electric motor, at least one processor, and at least one memory. The electric motor is configured to automatically shut off after a first time period. The memory stores instructions that, when executed by the processor, cause the system to determine a value pattern based on one or more parameters of the machine and / or one or more parameters of the electric motor, generate a second time period based on the value pattern, and automatically shut off the electric motor based on the second time period. In some embodiments, the value pattern is based on one or more parameters of a user profile associated with an operator of the machine.

The invention provides an electromagnetic brake control device which further controls an electromagnetic brake without delay. An electromagnetic brake control device (55), which controls an electromagnetic brake (54) that brakes the rotation of an AC motor (53) when the energization of an electromagnetic brake coil (54a) is cut off, is provided with: a rectifier (81), the DC side of which is connected to the electromagnetic brake coil (54a); a switching unit (84) that controls the power to the electromagnetic brake coil (54a) by switching a rectifier circuit (RL) connecting the rectifier (81) and the electromagnetic brake coil (54a) on and off; a DC converter (82) that is connected to the motor drive AC circuit (51a) and converts AC power to a predetermined DC voltage; an electromagnetic brake release circuit unit (85) that switches the switching unit (84) to an ON state by means of the DC voltage generated by the DC converter (82); and an electromagnetic brake operation command unit (83) that switches the switching unit (84) to the OFF state when the value of the current waveform of the AC motor (53) is between a positive threshold value and a negative threshold value and lasts for a predetermined determination time or longer.

The invention relates to a drive system (1) comprising a frequency converter (2), at least one drive unit (3), and a power supply (4), wherein the drive unit (3) has an electric motor (M) and at least one further component (36) consisting of at least one sensor element, actuator element and / or data storage element, and wherein the frequency converter (2) supplies the further component (36) of the drive unit (3) with energy via at least the one power supply (4), wherein the frequency converter (2) is designed to obtain a first piece of information (41) about the maximum available electrical energy of the power supply (4), wherein the frequency converter (2) is designed to obtain a second piece of information (31) about the electrical energy requirement of the further component of the drive unit (3), wherein the frequency converter (2) is designed to check the plausibility of the first piece of information (41) with respect to the second piece of information (31), wherein the decision-making criterion for the plausibility check is formed by a logical comparison of the first piece of information (41) with the second piece of information (31), and wherein the frequency converter (2) is designed to adapt the system state of the drive system (1) in accordance with the result of this plausibility check.

The application discloses an intelligent start-stop control method and system for a magnetic suspension refrigeration compressor, which acquires a position perception enhancement source and extracts current response change characteristics by collecting and analyzing current response data of a magnetic bearing coil; estimates a rotor position based on the current response change characteristics, extracts a positioning accuracy driving source from an estimated deviation, and generates a non-impact start-up excitation current instruction; establishes a multi-sensor fusion data network, activates a signal reconstruction configuration through an abnormal response, forms a degraded operation fault-tolerant mode; converts a response preparation gain according to a shutdown instruction signal, evaluates a shutdown state in combination with the signal reconstruction configuration, and generates an emergency shutdown trigger condition; detects a bus capacitor power supply state, releases gradient control potential, determines an active damping control opportunity, and generates a damping force control instruction, so as to finally realize intelligent start-stop control of the magnetic suspension refrigeration compressor, and ensure safe and reliable operation of the system under various working conditions.

To provide a technique capable of suppressing delay in halt operation of an electric motor in a reciprocating tool.SOLUTION: A reciprocating tool includes a reciprocating member, an electric motor, a transmission device, a control circuit, a drive circuit, a position sensor and a signal interruption circuit. The drive circuit (i) receives at least one drive signal, and (ii) drives the electric motor in accordance with at least one drive signal that is received. The position sensor outputs a position detection signal every time the reciprocating member reaches a prescribed position in at least one reciprocating operation. The signal interruption circuit has a wired logic so constituted as to block at least one drive signal from the drive circuit in response to the output of the position detection signal by the position sensor.SELECTED DRAWING: Figure 6

The invention relates to a spring-return actuator (SA) comprising an electric motor (MO) and a downstream gearbox (G), wherein a permanent-magnetic detent-torque restraint is effective between the stator (ST) and the rotor (RO) of the electric motor. The latter is dimensioned in such a way that, owing to the effective detent-torque restraint, an output-side actuating element (Z) remains in the actuating position in a current-free state after it has been moved from a rest position (RP) into an actuating position (BP) and after the motor-side torque has subsequently been removed by a motor control unit (MS). The motor control unit is designed, in the event of a fault or triggering situation, to actuate the electric motor with a torque pulse in the direction of rotation back towards the rest position in order to release the electric motor from the current-free actuating position of the actuating element. The actuator comprises a device (DG, H) for detecting a rotational position of the electric motor. If a change is detected in the rotational position in a direction of rotation back towards the rest position, the electric motor is actuated in order to apply a torque in the opposite direction of rotation so as to move the actuating element back into the (current-free) actuating position.

This application provides a control method and a related device for a drive motor of an automobile, and a transmission gearbox of an automobile. A stator of the drive motor includes a first phase winding, a second phase winding, and a third phase winding. The method includes: obtaining a position of a rotor of the drive motor, where the first phase winding is connected in parallel to the second phase winding, the first phase winding is connected in series to the third phase winding, and the second phase winding is connected in series to the third phase winding; and the drive motor is in a boost charging mode, and is configured to charge a power battery of the automobile after boosting a charging voltage; and if the position of the rotor is not a first target position, supplying a first current to the drive motor, so that a magnetic field generated by the stator adjusts the position of the rotor to the first target position, to make a locked-rotor torque of the drive motor be zero. In this embodiment of this application, the locked-rotor torque of the drive motor can be released.

The invention discloses a brake box, a motion control system, a mechanical arm and semiconductor equipment, relates to the field of industrial control, is used for realizing dynamic braking, and provides the brake box aiming at the problem that a motion track cannot be ensured to be not deviated during dynamic braking at present. The bleeder circuit in the brake box is connected with three phases of the motor, so that electric energy generated by power generation of the motor can be consumed, and the brake requirement is met. In addition, in the brake box, whether each phase in the three phases of the motor can consume electric energy through the bleeder circuit or not is controlled through the first switch. Furthermore, the current of each phase is detected through a current detection circuit, and the current of each phase of the motor is controlled to be close to a corresponding target current value, thereby ensuring that the motion track of the load driven by the motor does not deviate from the original track. Moreover, the brake box is independent of the motor driver, so that even if the motor driver breaks down, the brake control of the brake box on the motor is not influenced.

An electric braking device comprises a piston (6D) driven by a rotary linear motion device (8), which in turn is driven by an electric motor (7A). The piston (6D) is configured to press brake pads (6C) against a disc rotor (4) and to hold the brake pads (6C) in a pressure position by stopping the electric motor (7A). A parking brake control device (24) is configured to determine, when a request (application command) to hold the brake pads (6C) is received, a judgment point for assessing whether to stop the electric motor (7A) based on a change trend in a current value of the electric motor (7A). When the judgment point is reached, the parking brake control device (24) assesses whether or not to stop the electric motor (7A).

An electric brake apparatus includes an electric motor including driving circuits, a brake mechanism configured to press a braking member against a braking target member based on driving of the electric motor, and a control device configured to control the driving of the electric motor. The control device is configured to detect contact between the braking member and the braking target member based on a change in a current of the electric motor when power is supplied to a part of the driving circuits. A change amount of the current between before and after the braking member and the braking target member contact each other is larger when power is supplied to the part of the driving circuits than when power is supplied to all of the driving circuits.

A method (20) for controlling at least one electric machine (11) of a vehicle (100) is disclosed, wherein an efficiency-optimized torque map and a trimmed torque map are determined or provided (21) by a pulse inverter (12) of the electric machine (11), the efficiency-optimized torque map and the trimmed torque map are received by a control unit (22) and taken into account (23) when determining an operating strategy of the at least one electric machine (11). Furthermore, an arrangement (10) and a vehicle (100) are disclosed.

The invention provides a method for protecting a regenerative resistor and a motor control device, which can protect the regenerative resistor which consumes regenerative energy when a motor decelerates without additional hardware resources or a large calculation load. The regenerative transistor provided in series with the regenerative resistor is kept on during a period in which the main circuit voltage reaches the regenerative threshold voltage, and when the regenerative transistor is kept off when the main circuit voltage is lower than the regenerative threshold voltage, the regenerative transistor is turned off according to the resistance value of the regenerative resistor and the regenerative threshold voltage. A regeneration constant S indicating the energy generated by the regeneration resistor in each control cycle is defined (step 102), the regeneration constant S is accumulated in the control cycle in which the regeneration transistor is on (step 105), the accumulated value P of the regeneration constant is reduced in accordance with the time constant in the control cycle in which the regeneration transistor is off, and the state of the regeneration resistor is evaluated on the basis of the accumulated value P. And detecting an abnormality (steps 107, 108, 111).

The clamping strategy of an electromechanical brake depends on an already existing hydraulic pressure, in order to adjust the mechanical component of the clamping force and avoid an excessive clamping of the brake. The hydraulic component (FHyd) of the clamping force is estimated according to a pressure measurement, subtracted from a target force (FTar) to obtain the mechanical component to be applied (FTarNew), and the electric motor for controlling clamping of the brake is stopped at a threshold value (I2) of the current that is supplied thereto, according to the value of this mechanical component to be applied.

The utility model discloses a direct current motor with a brake structure, which comprises a motor assembly and a brake assembly, the motor assembly comprises a front end cover, a front casing, a rotor, a motor shaft, a brush carrier plate and a Hall plate, the brake assembly comprises a rear casing, a coil, a brake piece, a rear end cover, a spring and a brake pad, the front casing is connected with the rear casing, and the rear casing is connected with the rotor. The rotor and the motor shaft are arranged in the front machine shell, the motor shaft penetrates through the middle of the rotor, the brake piece is installed on the motor shaft, a rubber disc is arranged on the brake piece, a through hole is formed in the middle of the rear end cover, the spring is installed in the through hole, and one end of the spring is connected with the brake pad. During braking, the brake pad is connected with the rubber disc; according to the utility model, under the action of the coil, the spring, the brake pad and the rubber disc, the rotation of the motor shaft is controlled, and the brake of the motor is controlled, so that the motor is more convenient to use, and the brake of the motor is more accurately controlled.

The utility model discloses a coffee machine bottom box pull-out automatic stop circuit which comprises a trigger switch, a signal detection circuit, a full-bridge driving chip, an EN pin control circuit and a power supply control circuit. A pin 1 of the trigger switch is connected with a power supply end, and a pin 2 is connected with a signal detection circuit, an EN pin control circuit and a power supply control circuit; the other end of the signal detection circuit is connected with the single-chip microcomputer, and the other end of the EN pin control circuit is connected with an EN pin of the full-bridge driving chip. The input end of the power supply control circuit is connected with a power supply voltage, and the control end is connected with the VDD end of the full-bridge driving chip; a pin M1 and a pin M2 of the full-bridge driving chip are connected with the direct current motor; an FWD pin and an REV pin of the full-bridge driving chip are respectively connected with an IO2 pin and an IO1 pin of the single-chip microcomputer; according to the utility model, the shutdown link is shortened, and the execution efficiency of the shutdown action is improved.

An apparatus may include a first terminal, a second terminal, a direct current (DC) motor, a brake mechanism, and a voltage blocking mechanism. The DC motor may be configured to operate when a voltage is applied across the first terminal and the second terminal. The brake mechanism may be configured to apply braking to the DC motor when no voltage is present across the first terminal and the second terminal, and remove the braking from the DC motor when the voltage is applied across the first terminal and the second terminal. The voltage blocking mechanism may be configured to prevent the DC motor from operating when the voltage is applied across the first terminal and the second terminal until the braking from the brake mechanism is removed from the DC motor.

The present disclosure relates to an electronic parking brake system and a control method thereof. The electronic parking brake system includes an electronic parking brake that includes an electronic parking brake actuator applied by a motor. The electronic parking brake system includes a current sensor configured to detect a current flowing in the motor. The electronic parking brake system includes a processor configured to control a parking apply operation of the electronic parking brake. The electronic parking brake system includes a memory configured to store an inrush current generated during the parking apply operation of the electronic parking brake in a no-load condition. The processor calculates an inrush current model based on the inrush current and may accurately estimate and remove the inrush current generated during the parking apply operation by modeling the inrush current when there is no external load.

This application discloses a transfer robot. The transfer robot includes a robot body (100) and a telescopic arm assembly (200) telescopically provided in a first direction (X) with respect to the robot body (100). The telescopic arm assembly (200) includes a bottom plate (10) and a top plate (20), and a first motor (30) for lifting the top plate (20) is mounted on the bottom plate (10). The first motor (30) has a first driving shaft (32) disposed in the first direction (X), and a first brake (35) and a second brake (36) are sequentially provided inside the first motor (30) in the first direction (X), and are configured to simultaneously lock the first driving shaft (32).

The application relates to the technical field of motor equipment, in particular to an explosion-proof permanent magnet motor with a magnetic eddy current and friction composite braking device. The explosion-proof permanent magnet motor with the magnetic eddy current and friction composite braking device comprises a shell, a driving shaft and two braking mechanisms. The driving shaft is provided with a brake disc. Each braking mechanism comprises a rotating disc and a plurality of friction rods. The friction rods are intermittently switched between contact braking with the brake disc and contact heat dissipation with the shell, so that the heat of the brake disc can be timely conducted to the shell. Moreover, the friction rods rotate during sliding on the track, so as to change the position of the friction rods that are worn, thereby continuously changing the contact area of the friction rods with the brake disc and making the wear distribution more uniform. The application provides the explosion-proof permanent magnet motor with the magnetic eddy current and friction composite braking device, so as to solve the problems that, in the existing permanent magnet motor, a large amount of heat is generated by a friction ring during braking, the heat cannot be timely discharged, and the wear of a friction plate is uneven.