CN203596773U

CN203596773U - Multi-unit integrated driver for brushless direct-current motor

Info

Publication number: CN203596773U
Application number: CN201220656674.3U
Authority: CN
Inventors: 朱政; 解洪林; 唐文武; 张艳清; 吴向阳; 李春萍; 张慧勇
Original assignee: Beijing Institute of Specialized Machinery
Current assignee: Beijing Institute of Specialized Machinery
Priority date: 2012-12-04
Filing date: 2012-12-04
Publication date: 2014-05-14
Anticipated expiration: 2022-12-04

Abstract

The utility model discloses a multi-unit integrated driver for a brushless direct-current motor, and the driver comprises a master control unit and driving units. The driver is characterized in that the driver comprises two driving units; each driving unit is corresponding to three switching units and each switching unit is corresponding to one motor; and each driving unit only can be connected with one of the corresponding three switching units at the same time. Through the introduction of the technology of power driving and integration and the technology of motor switching, the driver employs a mode of simultaneous control and time-division switching to achieve that one driver controls six motors.

Description

Multiple unit integrated DC brushless motor driver

Technical field

The utility model belongs to drive and control of electric machine technical field, is specifically related to a kind of car launcher tank tower locking multiple unit integrated DC brushless motor driver.

Background technology

At present the Electric Machine Control of firing box and the use of launcher locking/unlocking on complete electric car launcher, all adopts every motor to be equipped with independent driver and controls, if need to multiple electric motors be controlled, needs many supporting drivers, bulky, quantity is various.In existing car launcher tank tower locking multi_motor control technology, the control of 6 motors can only could realize by 6 driver Collaborative Control, does not also specialize on the market the locking of car launcher tank tower at present and uses the drive products of controlling many DC brushless motor operations.

Utility model content

The purpose of this utility model is to provide a kind of car launcher tank tower locking multiple unit integrated DC brushless motor driver, in order to realize locking and the release of firing box and launcher on missile truck.The technical scheme the utility model proposes is as follows:

Activation configuration block diagram as shown in Figure 1, by integrated to function, power drive unit that specification is identical, power by common bus, controller adopts simultaneously and controls, the mode of switching controls completes the control of same master control board card to multiple DC brushless motors, realizes driver for brushless DC motor multiple unit integrated.Driver can be controlled 2 motors and be worked simultaneously by No. 1 control circuit, 2 road driver elements, 6 road switch units, and realizes the timesharing control to 6 motors in the mode of switching.

The beneficial effects of the utility model: by introducing power drive integrated technology, motor handoff technique, this driver adopts the mode of simultaneously controlling in conjunction with timesharing switching can realize the control of 1 driver to 6 motors.Compared with prior art, the utility model can be realized 1 driver of car launcher tank tower locking and control two DC brushless motor operations simultaneously, 6 motors of timesharing control move, and efficiently solve a difficult problem for 1 uncontrollable multiple electric motors of driver of car launcher tank tower locking.

accompanying drawing explanation

Fig. 1 is multiple unit integrated DC brushless motor driver structural representation;

Fig. 2 is the logical construction schematic diagram of multiple unit integrated DC brushless motor driver

Fig. 3 is the electrical structure diagram of switch unit 1.

embodiment

Below in conjunction with accompanying drawing, most preferred embodiment of the present utility model is further described.

As shown in Figure 1, the brushless driver of multiple unit integrated DC mainly comprises main control unit, power drive unit, sensor unit, operation display unit, switch unit.

In conjunction with Fig. 1 and Fig. 2, main control unit comprises DSP and FPGA, realizes the functions such as drivers velocity control, Current Control, instruction response.DSP is responsible for speed ring control, electric current loop amplitude limit and other communication functions.Main control unit DSP circuit comprises the circuit such as dsp chip, stabilized voltage power supply, crystal oscillator, JTAG emulation interface, the outer data storage of sheet, EEPROM.FPGA is mainly responsible for keyboard scan, charactron demonstration, Collection, collecting sensor signal.FPGA carries out data information exchange by internal data bus and DSP.Main control unit receives external command Real-time Feedback Drive Status in real time by interface circuit.Interface circuit comprises switching signal interface circuit, communication signal interface circuit and revolves change/code-disc interface circuit.Wherein, switching signal interface circuit receives the control signal of host computer and feeds back signal to host computer for driver, communication signal interface circuit, for the data communication between driver and host computer, revolves change/code-disc interface circuit and turns from angle-data for receiving motor.

The core devices IPM module (Intelligent Power Module) of driver element is for servomotor provides drive current, and its service behaviour directly affects the output quality of driver.IPM module has the advantage of high power transistor high current density, low saturation voltage and high voltage bearing advantage and field-effect transistor high input impedance, high switching frequency and low driving power; and inner integrated logic, control, detection and protective circuit; easy to use; not only reduce the volume of system and saved the development time, also greatly having strengthened the reliability of system.

Sensor unit (not shown) comprises bus current collection and angle of rotor of motor collection.Driver bus current adopts Hall current sensor to measure, its output current is by being that sampling resistor is converted into analog voltage signal in main control unit current-voltage conversion circuit, sampled voltage is after common-mode filter, export again gain amplifier to, be converted into the acceptable magnitude of voltage of dsp chip, carry A/D module through filtering input DSP and carry out A/D conversion.Electrical angle of motor rotor data provide by 3 Hall elements that are arranged on DC brushless motor, each Hall element can produce 180 degree pulsewidth output signals, 3 Hall element output signal mutual deviations 120 are spent phase difference, design reverser carries out shaping to the hall signal of transmission, utilize Schmidt's property to eliminate burr and disturb, can improve the antijamming capability of signal transmission.Position signalling can obtain motor speed by corresponding calculating.

Display unit is made up of charactron display module, and the functions such as parameter setting, fault message demonstration, data demonstration can be provided.

Switch unit is key technology of the present utility model, is used for realizing the timesharing switching controls of 1 driver to 6 DC brushless motors.Because electric current is larger, adopt relay to drive contactor to realize the mode that switch contact cut-offs and carry out the switching between motor.No. 6 motor passages are controlled respectively break-make by 6 contactors, and 6 contactors are controlled respectively by 6 relays again.Therefore the shutoff by software programming control relay and adhesive just can drive shutoff and the adhesive of contactor.Contactor has three groups of double make contacts, can control a road motor U, V, W three-phase break-make simultaneously.Now be elaborated according to the electrical structure diagram of switch unit 1.

As shown in Figure 3, driver element 1 connects No. 1 motor-No. 3 motor by 3 contactor K1, K2, K3.The control end A1-A3 pin high level of relay J 1-J3 when system initial state, relay output disconnects, relay output end connects contactor control end, therefore the control end X1-X3 pin of contactor K1-K3 is input as 0V, contactor disconnects, be that motor signal and driver element all disconnect, motor cannot move.In the time of No. 1 motor operation of needs, the control signal A1 pin low level of given first relay J 1 makes relay closes, thereby makes relay output 26V high voltage.Relay J 1 output connects contactor K1 control end X1 pin, and therefore the input of contactor K1 control end becomes 26V high level, makes contactor K1 conducting, and No. 1 motor is connected driver element, so far can control No. 1 motor.

In like manner, can be by the control end of relay J 2, relay J 3 being carried out to the closed of contactor K2, contactor K3 and disconnecting, thus realize the switching of driver element 1 between No. 1 motor-No. 3 motor.No. 1 motor-No. 3 motor electrical structure is identical in succession with driver element 1, and driver element 2 connects No. 4 motor-No. 6 motors by 3 contactors, is responsible for switching between No. 4 motor-No. 6 motors, and its electrical structure is consistent with Fig. 3.

This drive operation flow process is as follows:

1, single Electric Machine Control

1) exact connect ion such as driver and DC power supply, host computer;

2) equipment energising;

3) relevant parameter such as the speed of service, control parameter that driver is set each motor by operation display unit records and stores;

4) driver receives " No. 1 selection of Motor " instruction by interface circuit, selects No. 1 actuating motor, and No. 1 motor lamp is bright;

5) driver receives " forward " instruction by interface circuit, No. 1 actuating motor direction, fixing speed rotation in accordance with regulations;

6) driver receives " front limit switching signal " (low level) by interface circuit, and motor is out of service;

7) driver receives " reversion " instruction by interface circuit, and No. 1 actuating motor is by opposite direction, fixing speed rotation;

8) driver receives " rear limit switch signal " (low level) by interface circuit, and motor is out of service;

9) driver receives " No. 1 motor is cancelled " instruction by interface circuit, cancels and selects No. 1 actuating motor, and No. 1 motor lamp goes out;

10) driver is according in single Electric Machine Control similar 4)-9) can switch the single motor action control that amounts to 6 motors for No. 1-No. 6.

2, bi-motor is controlled simultaneously

1) exact connect ion such as driver and DC power supply, host computer;

2) equipment energising;

3) driver is recorded the relevant parameters such as each the motor speed of service of setting, control parameter store by operation display unit;

4) driver receives " No. 1 selection of Motor " and " No. 2 selection of Motor " instruction by interface circuit, selects No. 1 and No. 2 actuating motors, and No. 1, No. 2 motor lamp is bright;

5) driver receives " forward " instruction by interface circuit, No. 1, No. 2 actuating motor direction, fixing speed rotations in accordance with regulations simultaneously;

6) driver receives " front limit switching signal " (low level) by interface circuit, and No. 1, No. 2 motor is out of service;

7) driver receives " reversion " instruction by interface circuit, and No. 1, No. 2 actuating motors are by opposite direction, fixing speed rotation;

8) driver receives " rear limit switch signal " (low level) by interface circuit, and No. 1, No. 2 motor is out of service;

9) driver receives " No. 1 motor is cancelled " instruction and " No. 2 motor is cancelled " instruction by interface circuit, cancels and selects No. 1, No. 2 actuating motors, and No. 1, No. 2 motor lamp goes out;

10) driver control according to bi-motor simultaneously in similar 4)-9) can complete the bi-motor action control of No. 3 and No. 4, No. 5 and No. 6 motors.

Claims

1. a multiple unit integrated DC brushless motor driver, comprises main control unit and driver element, it is characterized in that, described driver comprises two driver elements, respectively corresponding three switch units of each driver element, the corresponding motor of each switch unit; Wherein, each driver element interior can only connection with in three switch units at one time.

2. multiple unit integrated DC brushless motor driver according to claim 1, it is characterized in that, described switch unit comprises relay and contactor, described relay receives the control signal of driver element, and to contactor output switching signal, described contactor is according to the rotation of the switching signal control motor of relay output.

3. multiple unit integrated DC brushless motor driver according to claim 2, is characterized in that, described contactor has three groups of double make contacts, for controlling the three-phase break-make simultaneously of motor.

4. multiple unit integrated DC brushless motor driver according to claim 1, is characterized in that, described driver element adopts Intelligent Power Module.

5. multiple unit integrated DC brushless motor driver according to claim 1, it is characterized in that, also comprise current sensor unit, described current sensor is used for gathering driver bus current and offers main control unit, described main control unit also comprises current-voltage conversion circuit and A/D change-over circuit, is respectively used to described current signal to be converted to analog voltage signal and to be further converted to digital signal.