425results about "Single motor speed/torque control" patented technology

The invention provides an aviation permanent magnet synchronous motor control architecture based on master-slave redundancy and model prediction, belongs to the field of aviation electric propulsion control systems, and aims to solve the problems of extreme environment parameter drift, single-fault shutdown, multi-target control conflict, fault diagnosis lag and the like of an existing system. The control architecture comprises a master-slave dual-redundancy control unit, a wide-temperature-range adaptive model prediction control unit, an electromagnetic interference adaptive suppression unit and a multi-dimensional fault tolerance unit. According to the invention, a DSP + FPGA heterogeneous redundant architecture is matched with two-out-of-three voting logic, so that fault non-perception switching is realized; an extended Kalman filter observer is embedded to update motor parameters on line, and take-off / cruise / landing three modes are preset; interference at the frequency band of 100kHz-10MHz is controlled and suppressed through adaptive notch filtering and a sliding mode variable structure; a long short-term memory network is fused to realize accurate diagnosis of early faults, and the system is adaptive to aviation scenes such as electric general aviation aircrafts and unmanned aerial vehicles.

The invention provides a permanent magnet synchronous motor rotating speed control method and system, and belongs to the technical field of motor control. The method comprises the following steps: firstly, constructing a discrete time mathematical model of a motor and an external source system comprising a lumped reference signal and lumped interference, and establishing a composite system model according to the discrete time mathematical model; then, constructing a dimensionality reduction observer to estimate an external source signal, and performing state and input transformation in combination with a regulator equation; thirdly, constructing a constraint set of the transformation system, and decomposing a state variable into a nominal component, a deterministic error component and an uncertain error component; a time-varying constraint tightening set is dynamically constructed according to the error, a model prediction control optimization problem with dynamic tightening constraint is solved online, and a nominal control quantity is obtained; and finally, combining the nominal control quantity and the estimated external source signal to synthesize an actual control voltage. According to the method, interference can be effectively suppressed, system security constraints are strictly ensured, recursion feasibility and closed-loop stability of control are ensured, and the dynamic response speed is increased.

The application discloses a kind of bipolarity switched reluctance motor control methods of distributed winding, comprising: 1) selecting suitable bipolarity switched reluctance motor, using distributed installation motor stator winding;2) based on the bipolarity switched reluctance motor selecting suitable power converter, motor each phase winding is connected using star connection mode;3) according to motor structure and the scheme of selected power converter division motor rotor position interval and making switch tube turn-on and turn-off;4) after starting, the commutation of motor is completed by two kinds of control methods.The application selects three-phase full-bridge power converter, reduces the cost of switched reluctance motor controller;Motor winding selects star connection, three-phase full-bridge circuit is connected with winding lead end, combined with the structure of the power converter, two commutation control methods of motor are proposed;Make motor total lead line quantity reduce, can be used in long distance power supply situation under motor drive field, such as downhole oil motor.

The invention relates to the technical field of motor control, in particular to a brushless motor electronic speed regulation circuit for an unmanned aerial vehicle and a control method of the brushless motor electronic speed regulation circuit. The brushless motor electronic speed regulation circuit comprises a printed circuit board, a power supply module and a grid driving module. The printed circuit board is provided with a plurality of wiring layers which are stacked, and comprises a first power supply layer and a second power supply layer which are adjacent to each other in the vertical direction and are overlapped and aligned, and an electrical control layer. The power supply module is arranged on the first power supply layer and the second power supply layer, the first power supply layer and the second power supply layer are electrically connected through a matrix via hole array, and the power supply module is used for being electrically connected with an external power supply and supplying power to a circuit after processing. The grid driving module is arranged on the electrical control layer, is powered by the power supply module and is used for outputting driving voltage to the brushless motor, large current transmission and balanced distribution of the multi-channel motor controller can be realized on a single printed circuit board, and electromagnetic interference of a power loop on a control signal is inhibited.

The present invention relates to the field of vehicle powertrain technology, and provides a boost module control method and apparatus for a vehicle motor, and a vehicle. The boost module control method for the vehicle motor includes: acquiring a driving intention parameter; and arbitrating a control mode of the boost module according to the driving intention parameter, where the control mode of the boost module includes a single-voltage-loop control and a double-loop control. It is possible to flexibly and accurately differentiate between requirements in different operating conditions based on the driving intention parameter, and enable the boost module to adopt a suitable control mode, thereby achieving a balance between the stability and the rapid response and improving the overall performance of the motor.

Various methods, controllers, and motor systems are described that facilitate pulse control of a motor to increase the energy efficiency of the motor when conditions permit. Selected transitions between pulse output levels are controlled to provide a cubic or higher order transition torque profile. In various embodiments, a cubic, quintic, or higher order transition profile is used. Using such a transition torque profile can improve the NVH characteristics of the motor while providing energy saving pulse transitions.

The invention relates to a brushless motor drive circuit, in particular to a brushless motor control drive circuit with high withstand voltage isolation strength, which comprises a control circuit for receiving and processing voltage signals fed back by a sampling circuit and a detection circuit and outputting control signals to the drive circuit; the driving circuit outputs a driving signal under the action of the control signal so as to drive the brushless motor to commutate or start and stop; the sampling circuit detects a current signal when the driving circuit works, converts the current signal into a first voltage signal and sends the first voltage signal to the control circuit, so that the control circuit monitors the three-phase current of the brushless motor in real time; the detection circuit is used for detecting a Hall signal of the brushless motor with a Hall sensor, converting the phase change state of the brushless motor into a second voltage signal and sending the second voltage signal to the control circuit, so that the control circuit can detect the position of the rotor in real time; according to the technical scheme, the defects that in the prior art, environment adaptability is poor, and precise driving of the brushless motor is difficult to achieve can be overcome.

The application provides a kind of stator double permanent magnet multi-tooth structure magnetic flux switching motor and its working method, belongs to permanent magnet variable reluctance motor technical field. Including coaxial arrangement stator core and rotor core, still including two sets of permanent magnets, stator core protruding arrangement has multiple equal angle interval arrangement big teeth, form solid slot between adjacent big teeth, each big tooth end is provided with small tooth, and define first virtual slot and two sides second virtual slot, rotor core is provided with multiple rotor teeth. Two sets of permanent magnets are tangential magnetization spoke yoke permanent magnet and radial magnetization slot permanent magnet respectively, spoke yoke permanent magnet is set in second virtual slot, slot permanent magnet is set in solid slot mouth and first virtual slot, the pole pair number of two sets of permanent magnets is equal to the number of big teeth on stator core, and the solid slot between big teeth is embedded with armature winding. Can solve the problem of low utilization rate of iron core and low motor output torque caused by structural defects in prior art traditional permanent magnet magnetic flux switching motor.

The invention relates to a compressor module (10), in particular for a compressed-air supply system (20) of a vehicle. The compressor module (10) comprises a compressor (12) and a speed-regulated brushless electric motor (14) for driving the compressor (12). During operation of the electric motor (14), a motor current (IB) arises. The electric motor (14) is assigned motor electronics having an electronic commutator and speed regulation. The compressor module is connected to or comprises an electronic control unit (100). The electronic control unit (100) is designed to specify, according to the average motor current (IB), one of at least two different target speeds for the electric motor (14), namely at least a predefined first target speed (n1, soll) and a predefined second target speed (n2, soll) which is less than the predefined first target speed (n1, soll), and to switch from specifying the predefined first target speed (n1, soll) to specifying the predefined second target speed (n2, soll) when the average motor current (IB) reaches or exceeds a specified motor-current current limit value (Imax; Imax, red).

The disclosure relates to calibrating electric motors for use with a heating, ventilating, and air conditioning (HVAC) system. Example embodiments include a method of calibrating a motor assembly, the method comprising: selecting (204) an electric motor (110) and a motor controller (111) for the motor assembly; obtaining (206) at least one electric motor parameter of the electric motor (110); determining (208) a correction factor for the electric motor (110) based upon the at least one electric motor parameter; and programming (212) the motor controller (111) with the correction factor.

The invention relates to a method for operating an electric motor (1), in particular a piston pump (9), wherein the electric motor (1) has a rotor shaft (3) and is driven with a target rotational speed (n soll ) and a target direction of rotation for the rotor shaft (3) depending on a power requirement, wherein an actual rotational speed (n Ist ) of the rotor shaft (3) is monitored. The method according to the invention is characterized in that the target direction of rotation is changed for a predetermined period of time (t) when the actual rotational speed (n Ist ) is equal to zero and the target rotational speed (n soll ) is not equal to zero, and the electric motor (1) is then driven again with the target rotational speed (n soll ) and the target direction of rotation.

To provide a motor control device capable of improving accuracy and reliability of magnetic flux estimation.SOLUTION: A motor control device has a voltage command preparation unit (41) generating a voltage command for controlling output voltage of a power conversion device according to a speed command or a torque command of a motor in which a rotor has a permanent magnet, a dead time compensation unit (42) performing a dead time compensation for the voltage command, and a magnetic flux estimation unit (50) estimating a magnetic flux of the permanent magnet. The magnetic flux estimation unit estimates the magnetic flux of the permanent magnet based on the voltage command, and a voltage drop occurring in the motor and the power conversion device, and between the motor and the power conversion device. The voltage drop includes a first voltage drop component due to resistance components, a second voltage drop component occurring due to the dead time compensation, and a third voltage drop component that is the voltage drop from which the first voltage drop component and the second voltage drop component are excluded.SELECTED DRAWING: Figure 1

The invention relates to a dual three-phase permanent magnet synchronous motor model-free prediction repetitive control method and system based on a double-subspace virtual vector, and the method comprises the steps: decomposing the vector of a motor into a fundamental wave subspace and a harmonic wave subspace which are orthogonal to each other based on an obtained operation parameter, and constructing an independent super-local model in the two subspaces; constructing a linear expansion state observer in the fundamental wave subspace, and constructing a repetitive expansion state observer based on repetitive control in the harmonic wave subspace; respectively synthesizing an independent virtual voltage vector set and a decoupling virtual voltage vector set in the two subspaces; and calculating reference voltage vectors of the two subspaces, selecting an optimal virtual voltage vector and an optimal decoupling virtual voltage vector, respectively calculating optimal duty ratios, synthesizing control signals applied to each bridge arm of the inverter, and driving the dual three-phase permanent magnet synchronous motor. According to the method, model-free control of double sub-spaces is realized, model parameters of a motor system of an algorithm are controlled, and better robustness is shown when the parameters are mismatched.

The embodiment of the application discloses a driving control circuit, a driving control method, a circuit board and an air conditioner, wherein the driving control circuit is connected with the first power module and the second power module at both ends of the open-winding motor, the second power module is connected with the energy storage module, the controller is used for sending the control signal to the first power module and the second power module according to the electric quantity of the energy storage module to change the working state of the driving control circuit, so that the electric energy can flow bidirectionally when the motor operates, the energy storage module can supply power to the open-winding motor under the condition that the energy is sufficient, the operating voltage of the motor is improved, and the operating efficiency of the motor is improved.

This utility model discloses an adjustable speed pusher with fault detection function, including a speed regulator. One end of the speed regulator is provided with a sealing gasket, and the other side of the sealing gasket is provided with a junction box. A composite connector electrically connected to the speed regulator is installed at one end of the junction box. The other end of the speed regulator is electrically connected to a permanent magnet synchronous motor. This adjustable speed pusher with fault detection function utilizes a PWM variable frequency speed control box driven by a permanent magnet synchronous motor. It can adjust the pusher speed in real time according to external commands, offering high flexibility and good controllability to meet the different pusher speed requirements of various processes. It also provides better energy-saving effects. Furthermore, this utility model can monitor its own circuit and vibration frequency information in real time and feed it back to the operator's control terminal for timely fault detection and troubleshooting, ensuring smooth production.

The invention provides a method and system for adjusting the speed of a variable-frequency driving motor through a controller, and relates to the technical field of speed regulation control, and the method comprises the steps: constructing a planetary gear train coupling structure based on the dual-motor power of a frequency converter; establishing two-wire communication connection by adopting a ModBus communication protocol, and dynamically acquiring real-time operation data of the frequency converter; the real-time operation data is dynamically analyzed through a PID controller, and a real-time speed regulation decision is obtained in combination with a predetermined load response strategy; and performing speed regulation control on the planetary gear train coupling structure according to the real-time speed regulation decision. According to the invention, the technical problem of low speed regulation control precision of the motor in the prior art can be solved, the technical targets of quick response, precise speed regulation and efficient energy distribution of the motor under different load working conditions are achieved, and the technical effect of improving the speed regulation control precision of the motor is achieved.

The invention discloses an intelligent control system and method for a permanent magnet synchronous brushless motor, and the method comprises the steps: measuring a rotation position signal of a secondary magnetic wheel of a motor rotor through a high-resolution position sensor, and measuring a rotation position signal of a main magnetic wheel of the motor rotor through a low-resolution sensor; detecting whether the position signal increment synchronization between the rotation position signal of the secondary magnetic wheel of the motor rotor and the rotation position signal of the main magnetic wheel of the motor rotor is completed within a set time or not; when the rotation position signal of the secondary magnetic wheel of the motor rotor and the rotation position signal of the main magnetic wheel of the motor rotor complete position signal increment synchronization within a set time, the motor enters a closed-loop control operation mode; the actual rotation position of the motor is determined according to the initial position of the motor and the rotation position signals of the motor rotor secondary magnetic wheel and the motor rotor main magnetic wheel, and the actual rotation position of the motor is adjusted according to the difference value between the actual rotation position of the motor and the target rotation position of the motor to reach the target rotation position of the motor.

The invention discloses a simulation modeling method and device for a permanent magnet synchronous motor. The simulation modeling method comprises the following steps: establishing a state equation of the permanent magnet synchronous motor; searching in a preformed first two-dimensional array by taking the stator current as an input quantity to obtain corresponding stator inductance; calculating a stator flux linkage differential value according to a state equation of the permanent magnet synchronous motor and the found stator inductance; integrating the stator flux linkage differential value to obtain a stator flux linkage; and obtaining the adjusted stator current according to the obtained stator flux linkage and the relational expression between the flux linkage and the current. According to the application, the MTPA function can be realized, the values of the inductance and the flux linkage are reduced along with the increase of the current, the MTPA state and the weak magnetic state working area of the real motor can be simulated, and the simulation motor is ensured to be close to the operation condition of the actual motor to the greatest extent.

The application relates to the technical field of motor driving, and discloses a motor driving method and a motor control method, which are realized through a driving circuit; the driving circuit comprises driving branches W, V and U which are connected in parallel; the driving branch W comprises upper and lower MOS tubes W+ and W- connected in series; the driving branch V comprises upper and lower MOS tubes V+ and V- connected in series; and the driving branch U comprises upper and lower MOS tubes U+ and U- connected in series; after current conduction control switching from the upper MOS tube V+ and the lower MOS tube U- to the upper MOS tube V+ and the lower switch tube W-, the upper MOS tube V+ is controlled to be always on, and the lower MOS tube W- is controlled to be intermittently on; when the driving state is switched, the lower MOS tube is controlled to be intermittently on, and the upper MOS tube is controlled to be always on, so that the energy stored in the winding of the motor can be circulated through the loop on the driving circuit instead of being poured back to the power supply, thereby effectively inhibiting the current pouring back of the power supply.

A hand-held electrically powered cut-off tool (100) for cutting concrete and stone by a rotatable cutting disc (105), the cut-off tool (100) comprising an electric motor (130) arranged to be controlled by a control unit (110) via a motor control interface (120), wherein the control unit (110) is arranged to obtain data indicative of an angular velocity of the cutting disc (105), and to detect a kickback condition based on a decrease in angular velocity, wherein the control unit (110) is arranged to control an electromagnetic braking of the electric motor (130) in response to detecting a kickback condition, wherein the control unit (110) is arranged to determine an angular acceleration associated with the electric motor (130), and to detect the kickback condition based on a comparison between the determined angular acceleration and a configurable detection threshold.

The application provides a battery heating control device, method and electric vehicle, which comprises a motor controller and a motor, the motor controller and the motor are connected with a battery to form a heating loop, the motor controller comprises an inverter and a controller. The inverter comprises a three-phase bridge arm and a bus capacitor, the bus capacitor and the three-phase bridge arm are connected in parallel, the control ends of six switch modules of the three-phase bridge arm are connected with the controller respectively, and the midpoints of the three-phase bridge arm are electrically connected with three-phase stator windings of the motor respectively. The controller is used for detecting a rotor position angle of the motor. According to the detected rotor position angle, an angle range where the rotor position angle is located is confirmed. According to the angle range where the rotor position angle is located, the switching frequency or the duty cycle of the switch module in the inverter is adjusted. The application can avoid the problem of demagnetization of the motor magnetic steel in the battery heating process, can ensure the safety of the motor, and can also improve the heating efficiency of the battery.

The invention discloses a high-power compressor driving circuit, a high-power compressor and a control method of the high-power compressor. The high-power compressor driving circuit comprises a controller, a three-phase half-bridge driving circuit, a three-phase half-bridge circuit and a direct current-direct current converter, the three-phase half-bridge driving circuit is connected with the controller; the three-phase half-bridge drive circuit is connected with the three-phase half-bridge circuit; the DC-DC converter is connected with the controller and the three-phase half-bridge drive circuit. Wherein the three-phase half-bridge circuit comprises 12 insulated gate bipolar transistors, each phase of the three phases of the three-phase half-bridge circuit comprises 4 insulated gate bipolar transistors, and the three-phase half-bridge circuit is used for driving the permanent magnet synchronous scroll compressor connected with the three-phase half-bridge circuit. The permanent magnet synchronous scroll compressor connected with the three-phase half-bridge circuit is driven in a double-tube parallel current expansion mode corresponding to the three-phase half-bridge circuit, the full-load load power of the permanent magnet synchronous scroll compressor can meet the driving refrigeration requirement of large equipment, the on-load overcurrent capacity is enhanced in the double-tube parallel current expansion mode, and the influence of the environment temperature is reduced.

A motor control device, a motor control method, and a motor unit control a brushless motor including a rotor and three-phase armature coils, the motor control device including: a position detection section that detects a rotational position of the rotor; a control section (54) that outputs first or second drive signals to an inverter (52) in a first or second control mode with a current application timing corresponding to the rotational position of the rotor; and the inverter (52) that outputs first or second current application signals to the three-phase armature coils when the first or second drive signals are input, in the second control mode, a value of a duty cycle at which a voltage is applied simultaneously to any two phases of the three phases is greater than in the first control mode.

One aspect of the present disclosure provides an electric power tool including a motor, a drive circuit, a voltage detector, a first calculator, and a second calculator. The drive circuit applies a power-supply voltage to the motor in accordance with a first duty ratio. The voltage detector detects a magnitude of the power-supply voltage. The first calculator calculates a desired duty ratio based on the magnitude of the power-supply voltage detected. The second calculator increases the first duty ratio from an initial value to the desired duty ratio in accordance with a lapse of time. The second calculator varies a rate of increase of the first duty ratio based on the magnitude of the power-supply voltage detected.

A motor control device includes: a manual steering command value calculation unit that calculates a manual steering command value using torsion bar torque; an integrated angle command value calculation unit that calculates an integrated angle command value by adding the manual steering command value to an automatic steering command value for driving assistance; and a control unit that controls drive of an electric motor based on the integrated angle command value. The manual steering command value calculation unit is configured to, in a driving assistance mode, calculate the manual steering command value using an equation of motion of a reference model of the steering device. The manual steering command value calculation unit calculates the manual steering command value using, as a virtual damper reaction force in the equation of motion, a virtual damper reaction force obtained by adding a virtual damper reaction force according to a derivative of the automatic steering command value to a virtual damper reaction force according to a derivative of the manual steering command value.

Provided are a mower and an all-terrain vehicle. The mower includes: a vehicle frame and multiple functional devices. The multiple functional devices include at least: a traveling assembly including traveling wheels for driving the mower to travel on the ground and a traveling motor for driving the traveling wheels; an operation assembly configured to be operated by a user to control the mower; and a power supply assembly configured to supply energy to the traveling assembly. The mower further includes a communication system, where the communication system includes control modules connected to the multiple functional devices, and the multiple control modules are capable of communicating with each other through a first channel. The communication system further includes a second channel, and the second channel is configured to transmit communication information between at least two control modules. With the preceding technical solutions, the mower with the communication link self-recovery function and the fault self-diagnosis function can be provided, and when communication between some functional devices of the mower is abnormal, a communication link between the other functional devices can still be established through the second channel.

A motor controller 18 is configured to operate a motor 16 of a printing apparatus 14. The motor controller stores a first set of parameters defining a first control function mapping control inputs and

The application belongs to the field of integrated permanent magnet synchronous motor control system design, and particularly relates to an integrated permanent magnet synchronous motor open loop-closed loop switching control method and a control system. The open loop control is designed at the same time as starting the closed loop calculation. When the open loop output speed reaches the open loop-closed loop switching speed and the closed loop control output target speed reaches the open loop-closed loop switching speed, the open loop control is switched to the closed loop control, and the motor is controlled in the closed loop mode, so that the motor control speed fluctuation is small, the speed following property is good, and the switching process is smooth.