98 results about "Motor loop" patented technology

The invention discloses an electric vehicle finished-vehicle thermal management system. The system comprises a motor-radiator loop, a PTC heating loop, a battery pack loop and an air-conditioner loop;heat transfer and heat exchange are achieved among all the loops through valves and a plate heat exchanger, so that the requirements of all parts for heating and cooling are met under different working conditions. By means of the thermal management system, communication of the motor loop, the battery loop and the PTC loop in a thermal management loop is achieved simply through the valves. The invention further discloses a control method of the electric vehicle finished-vehicle thermal management system. According to the control method, a difference value delta T1 between an actual battery operating temperature TB and a standard battery operating temperature T0 and a difference value delta T2 between a motor outlet water temperature TM and the actual motor operating temperature TB are adopted as identification parameters, and a fuzzy control method is utilized for determining a proper loop mode. By means of the control method, the thermal management loop mode is switched in real time according to the actual vehicle condition, and the battery energy consumption is reduced to the greatest extent.

The invention discloses a motor controller and a control method, which includes a control power supply connected to each module, a single-chip, a relay output module, a switching value input module, a watchdog module, and a keyboard input circuit. The invention is characterized in that the single-chip is respectively connected with a voltage mutual inductor and a current mutual inductor through a voltage filtering amplification module and a current filtering amplification module; the single-chip is respectively connected with a LCD display and a bus drive module through a data bus and a gating module; and the single-chip is also connected with a central control room computer through a communicating interface module. The real time measurement is executed to the voltage and current of the motor loop through the current mutual inductor and a circuit line voltage, and accurate and quick protection is carried out the motor defects such as over loading, locked-rotor, open-phase, light loading, three phase disbalance, earth/electrical leakage, undervoltage, over pressure, etc.; the direct, reversible, star/triangular starting up of the motor are realize with conjunction of exterior circuit, and the communication network carries out centralized monitoring to a plurality of motors distributed at different positions.

The invention discloses a method for inhibiting peak starting current of a start-stop motor. The method includes that firstly a relay with a current limiting resistor is added to a main start-stop motor loop comprising a storage battery, an ignition switch, a contact of an electromagnetic switch and the start-stop motor, and two binding posts of the current limiting resistor and the relay are parallelly connected and then connected between the ignition switch and the contact of the electromagnetic switch; and secondly, a power supply of the storage battery supplies power for coils of the relay and the electromagnetic switch respectively. The invention further discloses a relay for achieving the method for inhibiting peak starting current of the start-stop motor and a start-stop motor for implementing the method for inhibiting peak starting current of the start-stop motor. According to the method, the relay and the start-stop motor, the current limiting resistor is cut in or cut out when ignition is performed in the start-stop motor loop, so that overlarge starting current can be inhibited at the moment of starting of the start-stop motor so as to achieve the purpose of prolonging the service life of the start-stop motor.

A test stand for self-adaptive power recovering of a hydraulic pump mainly comprises a tested pump loop, a loading motor loop, a compensating pump loop and a detecting element. The tested pump loop comprises a tested pump and a left reversing valve. The loading motor loop comprises a loading motor, a throttle valve and a one-way valve, and the throttle valve and the one-way valve are connected in series to the pipe between the left reversing valve and the loading motor. The compensating pump loop comprises a compensating pump, a safety valve and a right reversing valve, wherein the compensating pump is coaxially connected with an electromotor mechanically; an oil outlet of the compensating pump is communicated to an oil inlet of the safety valve and an oil inlet of the right reversing valve respectively; an oil return port of the safety valve is communicated with an oil tank; the right reversing valve is a two-position three-way reversing valve, and two working oil ports are respectively communicated with oil inlets of the oil tank and the loading motor. The detecting element comprises a pressure gauge, a high-pressure flow gauge and a torque speed sensor. The test stand for self-adaptive power recovering of the hydraulic pump, with applicability to tests of various hydraulic pumps, has the advantages of simple structure, great power recovering effect and high operational reliability.

The invention discloses a double-motor drive control method on a real-time control network basis for improving the kinematic accuracy. The method comprises the following steps: 1) establishing the communication between a motion control card and a D/A converter based on a SynqNet real-time control network; 2) operating the motion control card to allow the D/A converter to output the same motion commands to two motor drivers; 3) operating the two motors respectively to drive two gears on the same rack, wherein the driving power is shared by the two motors; 4) operating the two motor drivers to control the two motors respectively and output the same adjustable bias torques in the opposite direction; 5) allowing the two motors to make the strictly synchronous movement by intersecting and accumulating the outputs from a synchronous compensator and the two motors; and 6) arranging a linear grating on the rack, wherein the position measurement information of the linear grating is input to the motion control card to achieve the effect of closed-loop control. The double-motor drive control method on a real-time control network basis greatly increases the accuracy of the rack-gear transmission system, ensures the adjustable bias torque, meets different requirements for load and speed and has good real-time property, controllability and reliability.

The invention discloses a method of detecting circuit fault for a washing machine motor, comprising the following steps: to input driving power to the motor and continue the input for a while; to stop inputting driving power to the motor and detect pulse count that is obtained in detection circuit of the amount of clothing per unit time after stop; to judge whether the pulse count per unit time is normal or not; if the pulse count per unit time is normal, the working state of the motor is normal; if not, the working state of the motor is abnormal. The invention meanwhile discloses a method of fault detection of the detection circuit of the amount of clothing, comprising the following steps: to input driving power to the motor and continue the input for a while; to detect pulse count that is obtained in detection circuit of the amount of clothing per unit time; to judge whether the pulse count per unit time is normal or not; if the pulse count per unit time is normal, the working state of the detection circuit of the amount of clothing is normal; if not, the working state of the detection circuit of the amount of clothing is abnormal. The invention solves the problems of fault detection of circuit for a washing machine motor and fault detection of detection circuit of the amount of clothing under the condition without increasing cost.

The air inlet of lower portion of cooling tower is enclosed and baffled by using metal screen, the outer side of said metal screen is equipped with a circle of water pipeline, on the water pipeline several branch water pipes are set, every branch water pipe is equipped with a water nozzle, the main water pipeline is connected to the water pool of tower bottom, in the pipeline connected with water pipe and water pool a water pump and a temperature control device are mounted, the temperature control device includes temperature controller, temperature sensor and AC contactor connected on the water pump and motor loop, the sensor can be used for detecting water temperature in the water pool and setting upper limit and lower limit of temperature controller action.

The invention provides a self-learning-pattern-based method and system for preventing hand clamping during door closing of a motor. The system comprises a microprogrammed control unit (MCU), a control circuit, a motor, a sampling circuit and an analog/digital (A/D) conversion circuit, wherein the sampling circuit acquires a loop voltage value of a loop of the motor; and the MCU receives the loop voltage value by the aid of the A/D conversion circuit and controls the motor by the aid of the control circuit. According to the method, in the door opening process, the maximum loop voltage value of the motor is acquired to be used as a locked-rotor valve value, in the door closing process, the loop voltage value of the motor is acquired and is compared with the locked-rotor valve value, whether a locked-rotor condition occurs is judged, if the locked-rotor condition occurs, the motor stops door closing, and if the locked-rotor condition does not occur, the motor closes a door continuously. With the method and the system, the problem of inconsistent locked-rotor valve values due to differences of motor consistency, performance change after long-time usage and the like can be effectively solved, the locked-rotor detection sensitivity is greatly improved, and personal safety is really guaranteed.

The invention belongs to the technical field of electric vehicles, and discloses an electric vehicle heat regulation and control system which comprises a motor loop, a battery loop and a first reversing valve, the motor loop comprises a driving motor, a first water pump and a radiator which are sequentially and circularly communicated through a fluid pipeline, and the battery loop comprises a battery and a second water pump which are circularly communicated through a fluid pipeline. The first reversing valve is respectively communicated with the motor loop and the battery loop, the first reversing valve has a first reversing state and a second reversing state, the motor loop and the battery loop are independent from each other in the first reversing state, and in the second reversing state, the driving motor, the first water pump, the battery and the second water pump form a circulation loop through the fluid pipeline and the first reversing valve. According to the invention, the motorloop and the battery loop are subjected to reversing adjustment through the first reversing valve, so that when the temperature of the battery is too low, the heat of the motor loop can be transferred to the battery loop, the use performance of the battery can be ensured, and the endurance mileage of a vehicle in a low-temperature environment is increased.

The invention relates to an electric vehicle fuse state detection circuit. Two ends of a motor fuse are connected in parallel to a branch formed by a motor loop state lamp and a motor loop resistor which are mutually connected in series. The motor loop state lamp is quenched when the motor fuse is conducted and is lightened when the motor fuse is fused. In the invention, when the fuse in one loop is conducted, a resistor resistance of a branch where the state lamp is located is greater than a branch where the fuse is located so that a current of the branch where the state lamp is located approaches zero and the state lamp is in a quenching state. After the fuse in the loop is fused, the current is increased so as to lighten the state lamp and then the state lamp is in a lightening state. The state lamp can be uniformly installed on an instrument panel at a handlebar position or be installed on other conspicuous places. When one loop generates a fusing fault, the state lamp in the loop is lightened. A cyclist sees the light and knows that the fuse in the loop has a fault so that the cyclist can determine a fault point.

The invention relates to a hydraulic system for a cone crusher. The hydraulic system for the cone crusher comprises an oil supplying system, a locking loop, an adjusting motor loop and an iron-encountering releasing and cleaning loop. The oil supplying system is composed of an oil tank, a motor and an oil pump. The locking loop is composed of a plunger cylinder and a fourth three-position-four-way valve. The adjusting motor loop is composed of a first oil motor, a second oil motor, a first three-position-four-way valve and a second three-position-four-way valve. The iron-encountering releasing and cleaning loop is composed of a third three-position-four-way valve, a locking oil cylinder and a releasing oil cylinder. Compared with the prior art, the hydraulic system for the cone crusher has the advantages that due to the fact that the condition that braking systems of the oil motors are braked by a brake is changed into the condition that the braking systems of the oil motors are controlled by hydraulic valves, the hydraulic system operation is more reliable; the hydraulic system control points are substantially reduced, and the fault occurrence rate is effectively decreased; by fully adopting domestic hydraulic elements, the price is low, and the maintenance is convenient; the electromagnet working conditions of solenoid valves are visually displayed through indicator lamps once a fault occurs, a fault point can be rapidly and accurately found, and the maintenance efficiency is improved.

An energy-saving-oriented self-energizing control method for a car active suspension system, relates to the field of energy-saving control for car active suspension systems, and solves the problem about high energy consumption of the active suspension system. The method comprises the followings: as per performance indexes required by the active suspension system, designing a feedback controller of the active suspension system; based on the status of a motor and the charge-discharge condition of a power source, dividing the motor into three working areas; according to the self-energizing criterion, determining whether or not the active suspension system is capable of self energizing; if yes, computing to obtain the value of the pattern variable gamma, and determining the working area of the motor and the operating mode of the suspension according to the value of gamma; according to the operating mode of the suspension, designing corresponding operating circuit for each suspension mode, and according to the relationship between the variable resistance Rvar and the desired current i* in the circuit of the motor under each operating mode of the suspension system, switching to the corresponding operating circuit to realize switching among operating modes of the suspension system and changing of the current direction, thus realizing self-energizing control. The method disclosed in the invention is applicable to self-energizing control in other occasions.

The invention discloses a double-speed motor controller and a control method thereof. The motor controller comprises a power supply connected with each circuit. The motor controller is characterized by consisting of a signal acquisition circuit, a microprocessor, a display circuit, a relay output circuit, a communication interface circuit, a transmitter circuit and a register; the signal acquisition circuit is connected with the display circuit, the relay output circuit, the communication interface circuit and the transmitter circuit through the microprocessor; the microprocessor is also connected with an online programming circuit and a memory; and the microprocessor is connected with an upper computer through the communication interface circuit to realize remote metering, remote control, remote regulation and remote communication of the double-speed motor controller. Because the structure and the method are adopted, the double-speed motor controller has the advantages that: three-phase current of a motor loop, voltage of one circuit and the like can be detected, the running state of the motor loop can be monitored at the same time, and fault protection such as thermal overload, blockage, three-phase current imbalance, over-voltage, under-voltage and the like are provided for the motor loop.

The invention discloses a self-generating limp system and method for a hybrid electric vehicle. The method comprises: setting electric appliance loads with the current fluctuation value larger than aset current fluctuation threshold value during opening/closing in whole vehicle loads to be R1, R2,..., Rn; when the 48V lithium battery has a fault, the lithium battery is charged, firstly, requesting an IBSG motor to enter an idle mode; then pre-charging and adjusting the idling speed of the engine are carried out; and after the voltage in the IBSG motor loop and the rotating speed of the IBSG motor meet the requirements, requesting the IBSG motor to enter a power generation mode to generate power, forbidding R1, R2,..., Rn to be switched on/off, and then converting the output voltage of theIBSG motor to charge the storage battery. According to the invention, after the 48V lithium battery breaks down and is disconnected, the IBSG motor can continue to generate power, and the situation that half-way feeding crouches down is avoided.

The invention relates to low-voltage motor protection method and device thereof. The invention relates to a low-voltage motor loop which comprises a circuit breaker and a contactor, wherein the output end of the contactor is connected with the input end of the circuit breaker, and the circuit breaker and the contactor are both connected with the low-voltage motor loop through a microprocessor module, the output end of a current signal detection module is connected with the input end of the microprocessor module, the output end of the microprocessor module is connected with the input end of an action execution module, and the output end of the action execution module is respectively connected with the input ends of the circuit breaker and the contactor. During the operation, the current signal detection module detects electric current in the low-voltage motor loop, and a detection result is transmitted into the microprocessor module for being analyzed and calculated, and the microprocessor module sends an action instruction to the execution module to control the contactor or switch off the circuit breaker. Therefore, the execution of the contactor or the circuit breaker is selected correctly by comparing the electric current acquired by the microprocessor module with the disjunction of the contactor, and consequently, the switching-off when the failure occurs is safer and more reliable.

The invention relates to the technical field of power supply circuits, in particular relates to a power integral protection circuit of a lithium battery charge drill, which comprises a battery, a driving circuit module, a control switch, a microprocessor and a motor, wherein the battery, the driving circuit module, the control switch and the motor are electrically connected sequentially, the driving circuit module is connected with the microprocessor, the battery is respectively connected with the control switch and the microprocessor, and the control switch is connected with the input end of the microprocessor. The power integral protection circuit has a simple and scientific structure design; under the condition that the current passing through the motor is not controlled, the maximum time that the charge drill can work when being clamped is calculated, the motor is protected through turning off a motor loop; and meanwhile the maximum motor working capacity and the long product service life are achieved.

The invention discloses an oil boom laying robot and a hydraulic system of support equipment thereof, and a control method thereof. The oil boom laying robot and the hydraulic system of the support equipment thereof comprise a safety overflow valve, an electromagnetic proportional reversing valve, a double-hydraulic control check valve, a hydraulic valve, a throttle valve, a sequence valve, a hydraulic motor and a hydraulic cylinder. The oil boom laying robot and the hydraulic system of the support equipment thereof comprise a robot body translating loop, a robot body swinging loop, an oil-sweeping arm stretching and retracting loop, a derricking oil cylinder loop, an oil boom buoy motor loop and a nozzle and buoy sequential acting loop which control translation of a robot body, swinging of the robot body and a robot oil-sweeping arm, stretching, retracting and luffing of the oil-sweeping arm, rotation of an oil boom buoy and the oil boom buoy gripping and inflating actions respectively. The oil boom laying robot can accurately lock or position the hydraulic cylinder or the hydraulic motor; through application of an electro-hydraulic proportional control technology to the hydraulic system, precise and automated control over a hydraulic component is achieved.

The invention discloses a vertical control policy and parameter calibration method based on a gravity compensator. The gravity compensator can balance an object gravity and provides a driving force of vertical movement of an object in Z, Rx and Ry directions; the gravity compensator is connected with a vertical motor loop in parallel; the gravity compensator comprises three independent gas paths; the gravity compensator and the vertical motor commonly use three logic shafts in the vertical direction; signals are divided into two paths after passing through the logic shafts; one path controls the vertical motor; and the other path controls the gravity compensator.