CN202266382U - Swash plate angle control driver of variable-displacement fuel pump of underwater vehicle - Google Patents

Abstract

The utility model provides a swash plate angle control driver of a variable-displacement fuel pump of an underwater vehicle, which comprises an MCU (microprogrmmed control unit )main control module with a kernel CIP-51, a high-speed magnetic coupling isolation module, an H-axle motor power driving module, a level switching module and a reset switch. Swash plate angle position instruction modulus and current position feedback modulus are input into an MCU to be compared to each other, turning direction signals and PWM (pulse width modulation) signals are output from the MCU to the H-axle motor power driving module after being isolated, and a direct-current motor is in cascade connection behind the H-axle motor power driving module. The level switching module supplies power for the MCU and an H axle. The reset switch is connected with the MCU. The H axle includes an upper half axle and a lower half axle, each half axle comprises an H-axle driving chip and two power MOSFETs (metal-oxide -semiconductor field effect transistors), and a bootstrap circuit is arranged on the periphery of the H-axle driving chip and supplies grid-electrode charge for the MOSFETs and charge required by the level switching module in each cycle. The swash plate angle control driver utilizes the kernel CIP-51 and the H axle to realize control of a pump angle actuating motor and has no requirement for additional direct-current motor drivers.

Description

A kind of submarine navigation device becomes discharge capacity petrolift swash plate angle controlling and driving device

Technical field

The present invention relates to heat power technical field under water, be specially a kind of submarine navigation device and become discharge capacity petrolift swash plate angle controlling and driving device.

Background technique

At present, mostly the petrolift that domestic and international submarine navigation device uses is to become the discharge capacity petrolift, through swash plate angle controller control direct current generator, regulates the swash plate angle of change discharge capacity petrolift, changes fuel flow rate, thereby reaches the purpose of ROV speed change.The swash plate angle controller adopts the rotational speed governor of MCS-51 series monolithic design usually; Its major defect is that this kind swash plate angle controller does not have the power drive function of direct current generator; Need in addition additional DC motor driver; Cause system numerous and diverse, need be in the submarine navigation device inner space of preciousness extra installation plurality of devices; The instruction execution speed of MCS-51 series monolithic is lower in addition, and all instructions all need 12 or 24 system clock cycles except MUL and DIV, and the maximum system clock frequency is 12-24MHz.

Summary of the invention

The technical problem that solves

Become the no driving force of discharge capacity petrolift swash plate angle controller self for solving existing submarine navigation device; System is numerous and diverse behind the additional DC motor driver; The deficiency that instruction execution speed is lower the present invention proposes a kind of submarine navigation device and becomes discharge capacity petrolift swash plate angle controlling and driving device.

Technological scheme

The present invention adopts the combination of CIP-51 and H bridge to use, with the power drive unit of H bridge as direct current generator, will control and driver element integrated, simplified numerous and diverse system of existing rotational speed governor+DC motor driver.

Technological scheme of the present invention is:

Said a kind of submarine navigation device becomes discharge capacity petrolift swash plate angle controlling and driving device, it is characterized in that: the MCU main control module, high speed magnetic coupling isolation module, H bridge power of motor driver module, level switch module and the reset switch that comprise the CIP-51 kernel; The MCU main control module that upper-position unit swash plate angle position command modulus and swash plate angle current location feedback modulus are imported the CIP-51 kernel respectively compares in real time; The rotation direction signal of MCU main control module output and pwm signal are isolated back input H bridge power of motor driver module through high speed magnetic coupling isolation module, and the back level of H bridge power of motor driver module connects controlled direct current generator; The submarine navigation device power supply is respectively MCU main control module and the power supply of H bridge power of motor driver module after the level switch module conversion; Reset switch connects the MCU main control module; Said H bridge power of motor driver module comprises two half-bridges up and down; Each half-bridge comprises a H bridge driving chip and two power MOSFET tubes; The peripheral bootstrap that adopts of H bridge driving chip, the bootstrap capacitor in the bootstrap can provide the gate charge of power MOSFET tube and the electric charge that requires of interior level switch module of each cycle.

Described a kind of submarine navigation device becomes discharge capacity petrolift swash plate angle controlling and driving device, and it is characterized in that: the bootstrap capacitor in the bootstrap is the twice of position of minimum capacitance, the lowest charge Q decision that position of minimum capacitance need be provided by bootstrap capacitor, Q wherein _gGate charge for power M OSFET pipe; F is a frequency of okperation; I _{Q (max)}Maximum static current for power MOSFET tube; I _{C (leak)}Leakage current for bootstrap capacitor; Q _LsThe electric charge that requires for level switch module in each cycle.

Described a kind of submarine navigation device becomes discharge capacity petrolift swash plate angle controlling and driving device; It is characterized in that: the rotation direction signal after isolating through high speed magnetic coupling isolation module is divided into two-way; One tunnel rotation direction signal feeds the IN pin of going up the half-bridge driving chip, feeds the IN pin of half-bridge driving chip down behind another road rotation direction signal process anti-phase device; Pwm signal through after the isolation of high speed magnetic coupling isolation module is divided into two-way, and one road pwm signal feeds the SD pin of going up the half-bridge driving chip, and another road pwm signal feeds the SD pin of half-bridge driving chip down.

Described a kind of submarine navigation device becomes discharge capacity petrolift swash plate angle controlling and driving device, and it is characterized in that: H bridge driving chip is with configuration resistance outward.

Beneficial effect

A kind of submarine navigation device that the present invention proposes becomes discharge capacity petrolift swash plate angle controlling and driving device; Adopt the main control chip of CIP-51 kernel; The MCS-51 instruction set of its instruction set and available technology adopting is compatible fully; Available standards 803x/805x assembler and compiler carry out software development, and be convenient and practical; This chip is fully-integrated low power consumption mixed signal SOC(system on a chip), need not the exterior arrangement chip, is not used with other digital processing chips, and is simple in structure; In addition, when CIP-51 was operated in the clock frequency of 25MHz, its peak velocity can reach 25MIPS, compared with the MCS-51 of standard, and instruction execution speed improves a lot.Adopt the combination of CIP-51 and H bridge to use, can realize the control of pump angle actuating motor fully, need not extra additional DC motor driver, simplified the swash plate angle control system of submarine navigation device change discharge capacity petrolift, saved valuable ROV inner space.

Description of drawings

Fig. 1: the skeleton diagram of the controlling and driving device that the present invention proposes;

Fig. 2: H bridge power of motor driver module circuit diagram.

Embodiment

Below in conjunction with specific embodiment the present invention is described:

Embodiment:

With reference to accompanying drawing 1, the submarine navigation device that proposes among the embodiment becomes MCU main control module, high speed magnetic coupling isolation module, H bridge power of motor driver module, level switch module and the reset switch that discharge capacity petrolift swash plate angle controlling and driving device comprises the CIP-51 kernel.

Wherein the MCU main control module is selected the C8051F920 chip for use; The C8051F920 chip is fully-integrated mixed signal SOC(system on a chip); The outside need not to dispose any chip, and system has 24 I/O mouth pins, and numeral realizes through preference cross bar switch compiler with the distribution of simulation resource; Reset switch is selected IMP81 1TEUS-T conversion chip for use, and high speed magnetic coupling isolation module is selected the AduM1300 chip for use.Level switch module adopts the DC-DC conversion, uses 27V DC electrical source in the submarine navigation device, exports 2 tunnel independently direct current 3.3V and 1 road direct current 12V.1 road 3.3V is the MCU power supply of magnetic coupling prime, and other 1 road 3.3V is the phase inverter power supply of level behind the magnetic coupling, and direct current 12V supplies H bridge power drive chip to use.

With reference to accompanying drawing 1; The ADC port that upper-position unit swash plate angle position command modulus and swash plate angle current location feedback modulus are imported MCU main control module C8051F920 chip respectively compares in real time; Passing ratio integral algorithm under clock signal of system control is by digital I/O mouth output rotation direction signal and pwm signal; Reset switch connects the MCU main control module; The prime of the rotation direction signal of C8051F920 chip output and pwm signal input high speed magnetic coupling chip AduM1300, rotation direction signal and the pwm signal of back level output of AduM1300 through isolating.

With reference to accompanying drawing 2; Through the rotation direction signal and the pwm signal input H bridge power of motor driver module of isolating; H bridge power of motor driver module comprises two half-bridges up and down, and to realize the positive and negative both direction rotation of motor, each half-bridge comprises a H bridge driving chip and two power MOSFET tubes; H bridge driving chip is selected the IR21844 chip for use, and power MOSFET tube is selected IRF540N for use.Bootstrap is all adopted in the bridge circuit driving chip IR21844 periphery of upper and lower half-bridge, and promptly when the Vs of half-bridge pin was dragged down ,+12V power supply was given charging bootstrap capacitor through bootstrap diode, formed bootstrap power supply.Adopt bootstrap approach simple, cheap; But its dutycycle and service time are subject to recharging of bootstrap capacitor; Therefore bootstrap capacitor must be able to provide the gate charge of power MOSFET tube and the electric charge that requires of interior level switch module of each cycle, and its required lowest charge Q that provides should satisfy following formula:

$Q={2Q}_g+\frac{I_{q\left(\max \right)}}{f}+Q_{\mathrm{ls}}+\frac{I_{c\left(\mathrm{leak}\right)}}{f}$

Q wherein _gGate charge for power MOSFET tube; F is a frequency of okperation; I _{Q (max)}Maximum static current for power MOSFET tube; I _{C (leak)}Leakage current for bootstrap capacitor; Q _LsThe electric charge that requires for level switch module in each cycle.Bootstrap capacitor must can provide charge Q, otherwise bootstrap power supply has very big voltage ripple.Stable for the voltage that keeps this bootstrap power supply, through repetition test repeatedly, this bootstrap capacitor should be selected 2 times of position of minimum capacitance.

With reference to Fig. 2, in order to eliminate environmental interference, the DT of bridge circuit driving chip IR21844, HO and LO pin are connected to resistance.

In addition, because the H bridge of being made up of 4 MOSFET pipe IRF540N that adopts carries out power output, must consider to prevent two power tubes conducting simultaneously of same brachium pontis.For this reason, be divided into two-way through the rotation direction signal after the high speed magnetic coupling isolation module AduM1300 isolation in the device, one tunnel rotation direction signal feeds the IN pin of going up the half-bridge driving chip, and another road rotation direction signal is through the IN pin of half-bridge driving chip under feeding behind phase inverter; Pwm signal through after isolating is divided into two-way, and one road pwm signal feeds the SD pin of going up the half-bridge driving chip, and another road pwm signal feeds the SD pin of half-bridge driving chip down.The anti-phase device is selected the HD74LV1G04A chip for use.

The back level of H bridge power of motor driver module connects controlled direct current generator, accomplishes the real-time control that submarine navigation device is become discharge capacity petrolift swash plate angle through direct current generator.

Claims (4)

1. a submarine navigation device becomes discharge capacity petrolift swash plate angle controlling and driving device, it is characterized in that: the MCU main control module, high speed magnetic coupling isolation module, H bridge power of motor driver module, level switch module and the reset switch that comprise the CIP-51 kernel; The MCU main control module that upper-position unit swash plate angle position command modulus and swash plate angle current location feedback modulus are imported the CIP-51 kernel respectively compares in real time; The rotation direction signal of MCU main control module output and pwm signal are isolated back input H bridge power of motor driver module through high speed magnetic coupling isolation module, and the back level of H bridge power of motor driver module connects controlled direct current generator; The submarine navigation device power supply is respectively MCU main control module and the power supply of H bridge power of motor driver module after the level switch module conversion; Reset switch connects the MCU main control module; Said H bridge power of motor driver module comprises two half-bridges up and down; Each half-bridge comprises a H bridge driving chip and two power MOSFET tubes; The peripheral bootstrap that adopts of H bridge driving chip, the bootstrap capacitor in the bootstrap can provide the gate charge of power MOSFET tube and the electric charge that requires of interior level switch module of each cycle.

2. a kind of submarine navigation device according to claim 1 becomes discharge capacity petrolift swash plate angle controlling and driving device, and it is characterized in that: the bootstrap capacitor in the bootstrap is the twice of position of minimum capacitance, the lowest charge Q decision that position of minimum capacitance need be provided by bootstrap capacitor,

Q wherein _gGate charge for power MOSFET tube; F is a frequency of okperation; I _{Q (max)}Maximum static current for power MOSFET tube; I _{C (leak)}Leakage current for bootstrap capacitor; Q _LsThe electric charge that requires for level switch module in each cycle.

3. a kind of submarine navigation device according to claim 1 and 2 becomes discharge capacity petrolift swash plate angle controlling and driving device; It is characterized in that: the rotation direction signal after isolating through high speed magnetic coupling isolation module is divided into two-way; One tunnel rotation direction signal feeds the IN pin of going up the half-bridge driving chip, feeds the IN pin of half-bridge driving chip down behind another road rotation direction signal process anti-phase device; Pwm signal through after the isolation of high speed magnetic coupling isolation module is divided into two-way, and one road pwm signal feeds the SD pin of going up the half-bridge driving chip, and another road pwm signal feeds the SD pin of half-bridge driving chip down.

4. a kind of submarine navigation device according to claim 3 becomes discharge capacity petrolift swash plate angle controlling and driving device, and it is characterized in that: H bridge driving chip is with configuration resistance outward.

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