82results about How to "Control torque" patented technology

The invention provides a vehicle constant speed cruise control method. The method comprises the following steps of: transmitting a constant speed cruise request to VCU by a driver by virtue of a button when a vehicle needs to perform constant speed cruise while driving, acquiring the current accelerator pedal position information, brake pedal position information, information whether complete vehicle is in an operating state or not and gear switch position information by VCU, and judging whether the constant speed cruise request transmitted to the VCU by the driver is valid, wherein the constant speed cruise is not performed if the current vehicle state does not meet the set conditions of the constant speed cruise; recording the current vehicle information as a target speed and a target rotating speed of the constant speed cruise by the VCU if the current vehicle state meets the set conditions of the constant speed cruise; and starting the constant speed cruise according to the acquired target speed by the VCU after the driver transmits a command of starting the constant speed cruise to the VCU by the button. According to the vehicle constant speed cruise control method provided by the invention, the fuel injection amount does not need to be accurately controlled like the traditional fuel vehicle, and the torque and rotating speed output of the motor can be accurately controlled by a torque or rotating speed request of the complete controller.

The invention discloses a three-freedom-degree flapping-wing comprehensive experiment platform which comprises a rack, a driving motor, a transmission mechanism, flapping wings and a control system, wherein a box-type structure is adopted under the rack and is used for installing the driving motor and the control system; two universal bearings are symmetrically arranged by a cross beam supported by vertical columns, so that one pair of flapping wings have three rotating freedom degrees; and the transmission mechanism transmits the rotation of the driving motor to the flapping wings to realize three-freedom-degree compound flapping, and measures the flapping force and the torque characteristic of the flapping wings by a sensor. According to the three-freedom-degree flapping-wing comprehensive experiment platform, any three-freedom-degree preset flapping law of the up-down flapping, the front-back sweeping and twisting can be accurately realized, and the direct real-time measurement is carried out on the force and moment in the flapping process. The three-freedom-degree flapping-wing comprehensive experiment platform is suitable for analysis and verification of the wind tunnel test for the complex moving law of the flapping wings.

The invention discloses a super-lifting counter weight optimization control device and a method. The method comprises the following steps: obtaining the parameters such as the working condition configuration information, arm support angle and the like of the current crawler crane through a sensor mounted on the crane; obtaining the center-of-gravity position of the entire crawler crane based on the basic principle of center-of-gravity synthesis, and calculating the required optimal super-lifting counterweight range; calculating the actually used super-lifting counterweight according to the measured super-lifting variable-amplitude plate pulling force and main variable-amplitude plate pulling force; when the moment offset is 15% greater than the bearing capacity of rotary support caused by the actually used super-lifting counterweight and the optimal super-lifting counterweight range, alarming by an alarm, and adjusting the super-lifting counterweight by manually adjusting the main variable-amplitude plate pulling force or super-lifting counterweight lifting device so that the super-lifting counterweight approaches or reaches the optimal value. The method disclosed by the invention can control the super-lifting counterweight utilization rage in the load moment changing process such as arm rising, load lifting, load lowering, load amplitude change and the like, and always controls the entire moment within certain optimization range.

In the rectangular-wave voltage control mode, torque feedback control, in which the voltage phase (phiv) of the rectangular-wave voltage is adjusted based on the deviation of the torque estimated value (Trq) from the torque command value (Trqcom), is performed. A torque estimation portion (420) calculates the torque estimated value (Trq) using the motor currents (Id, Iq) calculated based on the values detected by a current sensor (24) and a rotational position sensor (25), as in the case of the PWM control mode. Namely, the same state quantity (quantity detected by the sensors) of the alternating-current motor (M1) is used in the motor control in both the rectangular-wave voltage control mode and the PWM control mode.

The invention relates to bolt tightening devices, in particular to a torque-control multishaft bolt tightening machine which comprises a driving device, a gear box, an intermediate shaft, torque limiters and a tightening head, wherein one end of the intermediate shaft is connected with the driving device, and the other end penetrates out of the gear box; the outputs of the gear box are provided with transmission shafts, each transmission shaft is connected with an output shaft through the torque limiter, the other end of each output shaft is provided with a fixed plate, the output shaft at the end is connected with one end of a universal shaft after penetrating through the fixed plate, the other end of the universal shaft is connected with a template, and the tightening head is connected with the universal shaft through the template; and the template is provided with a limit switch, and one side of the limit switch is provided with a sensor fixedly connected on the template. The invention has the advantages of high efficiency, simple structure, high integration level, strong adaptability, wide application range and the like, and can realize multiple functions of reverse rotation, control on magnitude of moment, speed regulation and the like.

PROBLEM TO BE SOLVED: To provide a generator power controller capable of controlling both generated voltage and generated current and efficiently controlling power generation.SOLUTION: Power Pg to be outputted by a generator 7 is computed based on a motor torque command value Tt. A generated voltage command value Vdc<SP>*< / SP>and a generated current command value Idc<SP>*< / SP>for outputting this power Pg are computed. The load on an inverter 9 is varied by varying a PWM pulse width. Thus, control is carried out so that the actual generated voltage value Vdc and the actual generated current value Idc follow the generated voltage command value Vdc<SP>*< / SP>and the generated current command value Idc<SP>*< / SP>.

The invention discloses a lorry automatic gearbox crawling control system based on clutch target torque, which comprises the clutch synchronic examination sub-module, a vehicle sliding examination sub-module, and a clutch overheating examination sub-module. TCU utilizes the crawling control to vehicle according to the output signals of each sub-module. The crawling control to vehicle of TUC comprises the crawling control mode in waiting state, in the mixed accelerator state, in the mandatory junction state and in synch state. The switches of various control modes are up to the current vehicle state. Target speed (TS) of engine and clutch target position (ICP) in different vehicle state can be gained by the crawling control to vehicle of TCU. The method can meet the crawling control demands in various vehicle working conditions, protect clutch as much as possible and give drivers the maximum controllability of vehicle crawling.

The invention provides a torque-adjustable screwdriver, comprising a handle, a screwdriver rod and a screwdriver head, a connecting shaft, a connecting head, an adjusting ring, a central rod and a ball bearing spring torsion mechanism; wherein, the connecting shaft is connected at the front end of the handle; the connecting head is connected at the front end of the connecting shaft and sleeved at the rear end of the screwdriver rod; the adjusting ring is sleeved on the handle, the connecting shaft and the connecting head; one end of the central rod is inserted into the connecting shaft and connected with the connecting shaft and the other end thereof is inserted into the screwdriver rod and connected with the screwdriver rod; the ball bearing spring torque mechanism pushes through the connecting shaft in the radial direction, the internal end thereof is connected with the central rod in a contacting way and the external end thereof is connected with the adjusting ring in a contacting way. When the torque-adjustable screwdriver of the invention is in use, the torque can be effectively controlled, the operation is convenient, an idler rotation effect can be generated when the force is excessive, and the operated workpiece can be effectively protected.

The invention discloses a vehicle distributed energy resource power system and a control method thereof, and relates to the technical field of new energy vehicle power. The vehicle distributed energy resource power system comprises driving motors, a battery management system and a range extender set. The driving motors are used for driving wheels of a vehicle to rotate. The battery management system is used for obtaining electric quantity information of a power battery pack and controlling charging and discharging of the power battery pack. The battery management system has a first preset electric quantity threshold value and a second preset electric quantity threshold value. The range extender set comprises at least two range extenders. When the electric quantity of the power battery pack is lower than the first preset electric quantity threshold value, the range extenders are started to provide electric energy for the vehicle. The invention further provides the corresponding control method. By the adoption of a multi-motor driving mode and a multi-energy supplying mode, the requirements of different road conditions and different vehicle load matching are met, and thus the efficiency of the whole vehicle is improved, the mileage of the electric vehicle is effectively prolonged, and the power performance and economical efficiency of the system are improved.

A control system of an internal combustion engine includes a timing changing unit that changes opening and closing timing of an intake valve relative to rotation of an output shaft of the engine, a working angle changing unit that changes a working angle of the intake valve, a throttle mechanism including a throttle valve provided in an intake passage of the engine and an actuator that is operable to open and close the throttle valve, and an electronic control unit that controls the timing changing unit, the working angle changing unit and the throttle mechanism so as to control an intake air quantity of the engine to a target intake air quantity. The control system detects a failure of at least one of the timing changing unit, the working angle changing unit and the throttle mechanism, and, upon detection of a failure, executes a selected one of difference fail-safe control processes corresponding to different forms of failures, depending upon the form of the detected failure.

The invention discloses a cold forging press machine with a large rated tonnage point, comprising a machine body, a driving device, a multi-link mechanism, a slide block and a guide rail, wherein the multi-link mechanism comprises a triangular connecting rod, a rotating part, a rocker and a slide block connecting rod; the rotating part comprises a rotating shaft and an eccentric part taking the rotating shaft as a rotating center, the rotating shaft drives the eccentric part to rotate under the drive of the driving device, and the eccentric part is hinged with a first peak of the triangular connecting rod; one end of the rocker is hinged to the machine body and the other end is hinged with a second peak of the triangular connecting rod; and the upper end of the slide block connecting rod is hinged with a third peak of the triangular connecting rod and the lower end is connected with the slide block. The center of the slide block is arranged right below the rocking center of the rocker. The invention provides the cold forging press machine with the large rated tonnage point, which has the advantages that the rotating part is not easy to damage and the torsion for driving the rotating part is smaller.

The invention discloses a mechanical hydraulic and active differential grouping hybrid steering system for a multi-axle hybrid vehicle. The system adopts mechanical control hydraulic power-assisted steering of first and second axle steering wheels and active differential steering of fifth and sixth axle electronically-controlled wheel hub motors, and the system is composed of a rear axle electronically-controlled active differential steering system, a steering operation mechanism 1, a steering transmission mechanism 2, a steering hydraulic control system 3, a steering controller, a display system 4 and an angle sensor device 5; a rear wheel set and a front wheel set rotate reversely during low-speed turning, the turning radius of the vehicle can be reduced, and the maneuverability of the vehicle is improved; the front wheel set has a steering function at a high speed, the rear wheel set has no steering function, the stability of the vehicle during high-speed turning and accelerated overtaking is improved, turning movement generated when the vehicle turns at the high speed is reduced, steering of the rear wheel set is automatically recognized by the steering controller without the intervention of a driver, and the vehicle is operated more easily.

The invention provides a reciprocating-type hydraulic transmission coupling, which comprises a hydraulic control circuit, transmission oil and a main machine; the main machine comprises a shell, a machine core, a transmission shaft a and a transmission shaft b; the shell consists of a machine base, a front cover, a rear cover and an end cover; bearings c are arranged in the rear cover; a bearing a and a bearing b are arranged in the front cover; the transmission shaft a is arranged in the bearings c, and the transmission shaft b is arranged in the bearing a and the bearing b; the machine core consists of a cylinder body, a plunger, a cam, a slipping boot and a return stroke ring; the plunger is arranged along the radial direction in the cylinder body; an eccentric circular hole is formed in the inner side of the cam; the slipping boot is contacted with the cam and is hinged with the plunger; the return stroke ring is arranged in the eccentric circular hole in the cam. The coupling has starting and overload protection ability, is high in transmission efficiency and is easy to control; when magneto-rheological fluid is used as the transmission oil, the reciprocating-type hydraulic transmission coupling provided by the invention also has the advantages that the control sensitivity is high, and automatic computer control can be easily realized.

The invention discloses a three-phase brushless direct current motor control system based on a CAN (controller area network) bus and an ARM (advanced reduced instruction set computer machine). The system is used for monitoring a running condition of a motor in real time, and comprises a power supply module, a control module, a driver module, a protection module, a sensing module, a CAN communication module and an upper computer, wherein an ARM chip is in signal connection with the upper computer by the CAN communication module; the upper computer sends an instruction to allow the ARM chip to generate a PWM (Pulse-width Modulation) wave to control the rotating speed of the motor; stepless speed regulation of the motor can be achieved by changing a duty ratio of the PWM wave; an incremental photoelectric rotary encoder converts a rotating angle and the rotating speed of the motor into a pulse signal, and feeds back the pulse signal to a quadrature encoding pulse unit of the ARM chip; the ARM chip collects the fed back pulse signal and compares with given expected values of a position and the speed, to achieve double closed-loop control of the position and the rotating speed; and a locked rotor current of the motor is acquired by the motor driver module, converted into a voltage signal, and fed back to the motor driver module by a voltage comparator, so that overcurrent protection is achieved. The system has the advantages of simple structure, high operating speed, high communication efficiency, and the like.

This invention discloses a wind-mill generator characterizing that relative displacement occurs between the rotor and the stator by a driver, therefore, the magnetic induction volume between them is changed to alter generation power and control the action moment and generation frequency between them so as to increase the generation efficiency of wind-mill generation especially low rate generation and reduce the cost of constant-frequency control. This invented generator can be designed to two kinds: outer rotor and inner rotor.

The invention discloses a dual-auxiliary-hole low-friction sliding self-ligating bracket. The self-ligating bracket comprises a bracket main body and an adhesive bottom board, wherein the bracket main body is arranged on the adhesive bottom board; the bracket main body is provided with an arch wire groove, a main ligation wing, an auxiliary ligation wing and a locking plate; the locking plate is respectively matched with the main ligation wing and the auxiliary ligation wing; the arch wire groove is formed between the main ligation wing and the auxiliary ligation wing; a locking plate slot matched with the locking plate is formed in the auxiliary ligation wing; a slot matched with the locking plate is formed in the main ligation wing; and an auxiliary hole is formed in the bracket main body. In the using process, a torque can be effectively controlled during extruding, and auxiliary traction can be carried out, the gap of the locking plate is opened on a primary arch wire, the auxiliary hole can be used for drawing crowed teeth to be aligned, and a secondary arch wire is put into the auxiliary hole, so that the two arch wires can be used for accelerating alignment, enables effective torque control and synchronously keeps the arc of teeth, and the tooth root can be effectively twisted to avoid the conventional root absorption situation.

The invention relates to a downloading type plunger valve comprising a valve body, a plunger sealing ring, a support ring of the plunger sealing ring, a left connection tube, a right connection tube,a valve rod, a valve rod cap and a plunger, wherein a plunger chamber is arranged in the valve body and is a cylindrical hollow cavity which is longitudinally arranged, the plunger is arranged in theplunger chamber and is provided with a flow passage hole in a direction vertical to the axis of the plunger, the valve body is provided with an installation hole below the plunger chamber, and the installation hole is used for installing the plunger sealing ring and the plunger in the plunger chamber; the plunger valve also comprises a valve bottom cover, wherein the valve bottom cover correspondsto the installation hole, covers the installation hole and is in mutual butt fusion with the valve body.

The invention belongs to the technical field of wheelchair driving, and particularly relates to an adjustable and controllable worm transmission mechanism used for a wheelchair. The adjustable and controllable worm transmission mechanism comprises a driving motor, a driving spring and a transmission gear. When people use the wheelchair, an adjusting motor is controlled by people before using; an adjusting U-shaped ring is driven to rotate by the adjusting motor, an adjusting threaded wheel is driven to rotate by the adjusting U-shaped ring, and when the adjusting threaded wheel rotates, the adjusting threaded wheel can move along an axis of the adjusting threaded wheel, namely, initial elastic performance of the driving spring can be controlled through the adjusting motor, and maximum torque which can be transmitted by the driving spring is controlled accordingly; and when initial elastic performance of a thread is well adjusted by people, the driving motor is controlled to start to work, a transmission shaft is driven to rotate by the driving motor, two spring fixed discs are driven to rotate by the transmission shaft, the driving spring is driven to rotate by the two spring fixeddiscs, the transmission gear is driven to rotate by rotating of the driving spring, a gear shaft is driven to rotate by the transmission gear, and the wheelchair is driven to work by rotating of thegear shaft.

The invention belongs to the technical field of wheelchair driving, and especially relates to an adjustable worm transmission mechanism for a wheelchair. The adjustable worm transmission mechanism comprises a driving motor, a driving spring and a transmission gear. When the wheelchair is used, an adjusting motor is controlled before the wheelchair is used; an adjusting U-shaped ring is driven by the adjusting motor to rotate; an adjusting thread wheel is driven by the adjusting U-shaped ring to rotate; and the adjusting thread wheel rotates so that the adjusting thread wheel can move along an adjusting thread wheel axis, namely initial elastic property of the driving spring can be controlled by the adjusting motor. Then the maximum torque which can be transmitted by the driving spring is controlled. When the initial elastic property of the thread is adjusted, the driving motor is controlled to start to work; the driving motor drives a transmission shaft to rotate; the transmission shaft drives two spring fixing discs to rotate; the two spring fixing discs drive the driving spring to rotate; the driving spring rotates and drives the transmission gear to rotate; the transmission gear drives a gear shaft to rotate; and the gear shaft rotates and drives the wheelchair to work.

The invention discloses an automobile driving force control method and electronic equipment. The automobile driving force control method comprises the steps of obtaining the current vehicle speed, thecurrent throttle opening, the current sliding resistance and the rotating quality equivalent factor of each gear; obtaining the target acceleration according to the current vehicle speed and the current throttle opening; acquiring the target gear according to the target acceleration, the current vehicle speed, the current sliding resistance and the rotating quality equivalent factor of each gear;controlling the transmission gear of an automobile according to the target gear; and calculating and outputting the target engine torque according to the current vehicle speed, the target acceleration, the current sliding resistance and the rotating quality equivalent factor under the target gear. By means of the automobile driving force control method and the electronic equipment, the engine torque output by the automobile can be controlled by taking the target acceleration required by a driver as the target, so that proper driving force is applied to the automobile, the acceleration of theautomobile is the acceleration required by the driver, and driving demands of the driver are accurately adapted.

An electromechanical power coupling device for a hybrid vehicle comprises an engine, a power transmission mechanism, a power output mechanism and an electric mechanism, wherein the engine is connected with both the power output mechanism and the electric mechanism through the power transmission mechanism, the electric mechanism is connected with the power output mechanism through the power transmission mechanism, and the electromechanical power coupling device can operate in different transmission working modes by controlling the engine and the electric mechanism. According to the electromechanical power coupling device, the engine, a power generator and an electromotor are reasonably configured by utilizing a planetary gear mechanism, and the whole power system can realize the function of stepless speed change, so that the overall oil consumption of the hybrid vehicle is better improved.

The invention provides a buncher which can highly precisely control a gear ratio and a torque transmitted to an output shaft. The buncher (1) comprises a distance sensor (23) used for detecting the distance (x) from the distance sensor to a detected portion (18e) of an oscillating bar (18) which can be supported on an output shaft (3) in a rotary shaft bearing mode and an ECU (24) which calculates a phase position (theta) of the oscillating bar (18) based on a value detected by the distance sensor (23) and calculating a rotation radius of a rotating disk (6) based on the phase position (theta).

Wheel (110) slippage of a machine (100) may be controlled using brake (114) control and engine (130) torque control. In some examples, the present disclosure describes a method of controlling a wheel (110). Example methods may include sensing a rotational speed of the wheel (110), and sensing an acceleration of the machine (100). The method may also include estimating a target speed (212) of the wheel (110) based at least in part on the rotational speed of the wheel (110) and the acceleration of the machine (100). The method may continue with calculating a speed error, the speed error being a difference between the rotational speed and the target speed. The method may also include controlling a brake (114) of the wheel (110) based on the speed error and / or a torque of an engine (130) of the machine (100) based on the speed error.

The invention discloses a cover body opening closing device, which is provided with an assembly element, an elastic element, a supporting element, and a sliding member. The assembly element is disposed on the upper end part of the rear part of the device body along a vertical direction. The elastic element is disposed in the sliding member accommodation part of the assembly element. The supporting element is used to support the cover body, and is rotatably disposed on the upper part of the assembly element by a hinge chain rod. The sliding member is disposed on the upper part of the elastic element in a covered manner, and is capable of sliding upwards and downwards in the sliding member accommodation part. The upper end part of the sliding member is provided with a cam part having a side surface in the shape of a mountain. The cam part is constituted by a rising cam part and a decreasing part. The cover body opening closing device also comprises a first motion part and a second motion part, which are disposed on the supporting element, and abut against the rising cam part and the decreasing cam part according to the rotation angle of the supporting element. The equipment provided by the invention adopts the above mentioned cover body opening closing device.

The invention belongs to the technical field of wheelchair driving, and particularly relates to a worm transmission mechanism for a wheelchair. The worm transmission mechanism comprises a driving motor, a driving spring and a transmission gear. According to the worm transmission mechanism, the wheelchair is used by people, people can rotate an adjusting handle before the wheelchair is used; the adjusting handle drives an adjusting U-shaped ring to rotate; the adjusting U-shaped ring is drives an adjusting threaded wheel to rotate; the adjusting threaded wheel rotates so that the adjusting threaded wheel can move along the axis of the adjusting threaded wheel; the initial elastic performance of the driving spring can be controlled by adjusting the adjusting handle, and the maximum torque which can be transmitted by the driving spring is further controlled; after people adjust the initial elastic performance of a thread, the driving motor is controlled to start to work; the driving motor drives a transmission shaft to rotate; the transmission shaft drives two spring fixing disks to rotate; the two spring fixing disks drive the driving spring to rotate; the driving spring rotates todrive the transmission gear to rotate; the transmission gear drives a gear shaft to rotate; and the wheelchair can be driven to work through rotation of the gear shaft.

A parallel-in transferring test platform of a generator comprises a main test loop and a brake, wherein the brake is connected with a loading motor which is connected with a rotating speed torque instrument, the rotating speed torque instrument is connected with one end of a device to be tested, and the other end of the device to be tested is connected with a right-side rotating speed torque instrument which is connected with a speed regulating motor; the parallel-in transferring test platform of the generator also comprises an inversion unit, an excitation unit and a frequency converter, wherein the inversion unit is respectively used for controlling the excitation current and the torque current of the motor according to the directional distance of a magnetic field; and the frequency converter is used for feeding back the energy control. The parallel-in transferring test platform of the generator has the advantages that the automatic test is realized, the test process is safe, high-efficiency and energy-saving, and the running state of a frequency conversion unit can be monitored.

PROBLEM TO BE SOLVED: To provide a generator power controller capable of controlling both generated voltage and generated current and efficiently controlling power generation.SOLUTION: Power Pg to be outputted by a generator 7 is computed based on a motor torque command value Tt. A generated voltage command value Vdc<SP>*< / SP>and a generated current command value Idc<SP>*< / SP>for outputting this power Pg are computed. The load on an inverter 9 is varied by varying a PWM pulse width. Thus, control is carried out so that the actual generated voltage value Vdc and the actual generated current value Idc follow the generated voltage command value Vdc<SP>*< / SP>and the generated current command value Idc<SP>*< / SP>.