CN205844853U - A kind of electric rudder system based on TMS320F28335 - Google Patents

Abstract

This utility model discloses a kind of electric rudder system based on TMS320F28335, belong to SERVO CONTROL field, the electric rudder system arithmetic speed of prior art is slow, precision is low, apply limited, the electric rudder system that this utility model provides, including controller and electric steering engine, its middle controller have employed TMS320F28335 chip, thus improve arithmetic speed, precision, and it is applicable to multiple servo control mechanism.

Description

A kind of electric rudder system based on TMS320F28335

Technical field

This utility model belongs to SERVO CONTROL field, more particularly, to a kind of electronic rudder based on TMS320F28335 System.

Background technology

Electric rudder system is a kind of servo-control system, and rudder control signal and rudder feedback signal are carried out comprehensively, amplify by it, Drive the operating of driven by motor drive mechanism, allow rudder follow Control signal of the rudder beat.

Disclosed electric servomechanism type has simulation control type, DSP integer number control type, single-chip microcomputer digital control Type, FPGA Programmable logical controller type, the motor of control has: brushed DC motor, brshless DC motor, ac synchronous motor. In the controller, simulation control type and the application of DSP integer number control type are more, but simulation control type is difficult and intelligent because of debugging Degree is low, it is difficult to adapt to the needs of servo control mechanism development；DSP integer number type is weak because of Floating-point Computation function, and use is restricted； Single-chip microcomputer is because of limited performance, and its application obtains a definite limitation；FPGA Programmable logical controller type is because realizing complexity, and popularization and application is subject to To limiting.

Utility model content

For disadvantages described above or the Improvement requirement of prior art, this utility model provides a kind of based on TMS320F28335 Electric rudder system, it is by studying the structure and layout of critical component such as controller, electric steering engine and relate to, it is achieved Electric rudder system feature richness, is applicable to different servo control mechanisms, and it is high etc. excellent that it is provided simultaneously with fast operation, precision Point, is therefore particularly suitable for the control of electric steering engine.

For achieving the above object, according to an aspect of the present utility model, it is provided that a kind of based on TMS320F28335 Electric rudder system, it is characterised in that comprise controller (1) and electric steering engine (2)；Described controller (1) comprises: TMS320F28335 controller (11), A/D change-over circuit (111), CAN interface circuit (12), rudder feedback signal processing circuit (13), current signal processes circuit (14), Programmable Logic Device (15), buffer (16), over-current detection circuit (17), DC/ DC changer (18), low dropout voltage regulator (19)；

The control signal that the host computer of described electric rudder system sends is connected to described through described CAN interface circuit (12) TMS320F28335 controller (11), the most described rudder feedback signal processing circuit (13), described current signal process circuit (14) outfan is connected to described A/D change-over circuit (111), described A/D change-over circuit (111) and described TMS320F28335 Controller (11) connects, and the outfan of described TMS320F28335 controller (11) is connected to described Programmable Logic Device (15) Input, the outfan of described Programmable Logic Device (15) is connected to the input of described buffer (16), described buffering The outfan of device (16) is linked to the input of described electric steering engine (2), and the current signal of described electric steering engine (2) is through described Over-current detection circuit (17) sends into Programmable Logic Device (15).

Preferably, also including DC/DC changer (18) and low-dropout regulator (19), described DC/DC changer (18) has Having two outfans, an output ± 15V voltage, another exports+5V voltage；The outfan of described low-dropout regulator (19) Output+3.3V voltage and+1.8V voltage, input connects the+5V voltage output end of described DC/DC changer (18).

Preferably, described electric steering engine (2) comprises: photoelectric isolating circuit (21), drive circuit (22), motor and driver Structure (23), output shaft (24), current sensor (25), angular transducer (26)；

The outfan of described photoelectric isolating circuit (21) is connected to the input of described drive circuit (22), described driving electricity Outfan one tunnel on road (22) is connected to controller through current sensor (25), and another road is connected to motor and drive mechanism (25) Input, described motor and drive mechanism (23) outfan are connected to described output shaft (24), described angular transducer (26) The corner of sensing output shaft (24), output to described controller (1).

Preferably, described drive circuit (22) comprises three terminal regulator (221) and drives module (222), motor and transmission Motor in mechanism (23) is brush direct current motor.

Preferably, described photoelectric isolating circuit (21) is connected to the outfan of described buffer (16), described current sense The outfan of device (25) is connected to the input of described signal processing circuit (14), and the outfan of described angular transducer (26) is even It is connected to the input of described signal processing circuit (13).

According to another aspect of the present utility model, it is provided that a kind of brushless electric machine controlling party based on TMS320F28335 Case.

Control part by TMS320F28335 controller, CAN interface circuit, input signal processing circuit, CPLD logic The compositions such as reason circuit, buffer, power-switching circuit.Steering wheel part include photoelectric isolating circuit, drive circuit, brushless electric machine and Drive mechanism, output shaft, hall signal process circuit, current sensor, angular transducer etc. and constitute.

In general, by the contemplated above technical scheme of this utility model compared with prior art, it is possible under acquirement Row beneficial effect:

(1) owing to all using integer arithmetic control before in steering gear system, its operational precision is not high enough, floating-point operation speed Degree is slow, and uses TMS320F28335 chip, it is possible to realizing floating-point operation, fast operation, computational accuracy is high.

(2) owing to there is abundant interface in device, and in existing chip, type and the quantity of interface are relatively fewer, adopt Use TMS320F28335 chip, fully used its polymorphic type, the characteristic of many quantity interface, as this chip includes that 2 CAN connect Mouthful, one is used for ground test, and another controls for system.

Accompanying drawing explanation

Fig. 1 is the electric rudder system theory diagram based on TMS320F28335 that this utility model provides；

Fig. 2 is the electric rudder system power circuit block diagram based on TMS320F28335 that this utility model provides；

Fig. 3 is the electric rudder system controller block diagram based on TMS320F28335 that this utility model provides；

Fig. 4 is the electric rudder system electric steering engine block diagram based on TMS320F28335 that this utility model provides.

Detailed description of the invention

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain This utility model, is not used to limit this utility model.Additionally, institute in each embodiment of this utility model disclosed below Just can be mutually combined as long as the technical characteristic related to does not constitutes conflict each other.

The utility model discloses a kind of electric rudder system based on TMS320F28335, including controller and electronic rudder Machine；Controller 1 includes at TMS320F28335 controller 11, A/D change-over circuit 111, CAN interface circuit 12, rudder feedback signal Reason circuit 13, current signal process circuit 14, Programmable Logic Device 15, buffer 16 and DC/DC changer 18, low voltage difference are steady Depressor 19；Electric steering engine 2 includes photoelectric isolating circuit 21, drive circuit 22, motor and drive mechanism 23, output shaft (rudder face) 24, current sensor 25, angular transducer 26.Wherein TMS320F28335 controller is anti-by CAN interface circuit 12, rudder respectively Feedback signal processes circuit 13, current signal processes circuit 14 and receives rudder control signal, gathers rudder feedback signal and current of electric letter Number, export rudder after processing and drive signal, control driven by motor electric steering engine through drive circuit 22 and rotate, angular transducer 26 Feedback output shaft (rudder face) 24 deflection angle, is controlled output shaft (rudder face) by controller and deflects into predetermined angle, so that rudder Face is rotated by the requirement of rudder control signal.This utility model uses TMS320F28335 digital stream network, by all servies Structure control method is integrated to be completed in the controller, have integrated level height, rich interface, control method flexibly, flop operating speed Fast distinguishing feature, electric rudder system controller volume based on TMS320F28335 is little, lightweight, servo control mechanism adaptive surface Extensively.

Rudder system theory diagram is as it is shown in figure 1, controller 1 includes TMS320F28335 controller 11, CAN interface circuit 12, rudder feedback signal processing circuit 13, current signal process circuit 14, Programmable Logic Device 15, buffer 16, over-current detection Circuit 17 and DC/DC changer 18, low-dropout regulator 19；Electric steering engine 2 include photoelectric isolating circuit 21, drive circuit 22, Motor and drive mechanism 23, output shaft (rudder face) 24, current sensor 25, angular transducer 26.

Fig. 2 is power converting circuit, DC/DC changer 18 be ± 15V and+5V power supply by+28V power conversion, low pressure + 5V power conversion is+1.8V and+3.3V power supply by difference manostat 19, for TMS320F28335, other parts number in controller Word circuit, analog circuit use.

Fig. 3 is controller partial circuit theory diagram, comprise TMS320F28335 controller 11, A/D change-over circuit 111, CAN interface circuit 12, rudder feedback signal processing circuit 13, signal processing circuit 14, logic circuit 15, buffer 16, control letter Number being inputted through CAN interface circuit 12 by host computer, rudder feedback signal, current signal are respectively through rudder feedback signal processing circuit 13 electricity Stream signal processing circuit 14, then send A/D change-over circuit 111, and under the control of TMS320F28335, A/D change-over circuit 111 will Two-way analogue signal is converted to digital signal, and is respectively fed to TMS320F28335 and carries out digital filtering and rudder control signal solution Calculating, the Control signal of the rudder pulse width modulator PWM output calculated, export also has control direction signal simultaneously.Pwm signal and mistake Stream detection 17 signals are simultaneously entered Programmable Logic Device 15, after current limliting logical process, and sending buffer 16, control electric steering engine Action, and when motor overcurrent, cut-off current passes through motor.

Fig. 4 show electric steering engine theory diagram.Electric steering engine integrates with its drive circuit, comes from controller Control signal drives motor and drive mechanism 23 through photoelectric isolating circuit 21, drive circuit 22, drives output shaft (rudder face) 24 inclined Turn, current sensor 25 induction machine armature supply, and give controller process；Angular transducer 26 sensitive steering wheel angle letter Number, send controller to process.

Further, drive circuit is provided driving module 222 power supply by three terminal regulator 221, drives module 222 to drive electricity Machine operates.

The electric rudder system based on TMS320F28335 provided for further description this utility model, in conjunction with Details are as follows for instantiation:

Controller 11 selects TMS320F28335 chip and accessory circuit；AD7606BSTZ selected by A/D change-over circuit 111； CAN interface circuit 12 uses digital isolator ADUM1201BRZ and CAN transceiver TJA1050T；Rudder feedback signal processing circuit 13, current signal processes the computing circuit that circuit 14 uses operational amplifier OPA4277UA to constitute；Programmable Logic Device 15 is selected Use EMP240T100I chip；Eight bus transceiver SNJ54ABT245AFK chips selected by buffer 16；Current detecting is selected and is compared Device MAX924MJE；± 15V+5VDC/DC changer 18 selects SWH15-28D15 and SWH15-28S05 module, low voltage difference voltage stabilizing TPS70451PWP chip selected by device 19.Photoelectric isolating circuit 21 is made up of photoelectrical coupler ACPL-054L and interlock circuit；Three End manostat 221 selects CW78L12, motor drive module 222 to use KK240；Motor uses brush motor J50SY240, transmission Mechanism uses gear+screw nut driven mechanism；Output shaft 24 is made by oneself；Current sensor 25 uses ACS758LCB-050B- PFF-T；Angular transducer 26 uses WD1503C.

In this utility model, electric rudder system based on TMS320F28335 includes controller, electric steering engine part；Its Middle controller part comprises TMS320F28335 controller, A/D change-over circuit AD7606BSTZ, signal processing circuit, able to programme Logic circuit, buffer, power-switching circuit；Electric steering engine part includes photoelectrical coupler, motor drive module, motor and biography Motivation structure, output shaft, current sensor, angular transducer.

The control signal of control part is inputted TMS320F28335 by host computer through CAN interface, simultaneously rudder feedback signal, electricity Stream signal send A/D change-over circuit after signal processing circuit processes, and under the control of TMS320F28335, A/D change-over circuit is by two Road analogue signal is converted to digital signal, and the most incoming TMS320F28335 carries out digital filtering, and enters with rudder control signal Row integrated treatment, the Control signal of the rudder pulse width modulator PWM output after process.

Wherein electric power management circuit passes through DC/DC changer, input power is transformed to ± 15V ,+5V, for system digits Circuit, artificial circuit part use, and supply it addition ,+5V is transformed to+3.3V and+1.8V by low-dropout regulator LDO TMS320F28335 controller, digital circuit use.

Programmable Logic Device receives pwm signal and the letter of current detecting output of TMS320F28335 controller output Number, process out the control signal of control brush direct current motor, through SNJ54ABT245AFK chip buffering rear drive isolation optocoupler.

Photoelectric isolating circuit, power of motor drive circuit.Photoelectric isolating circuit receives the motor operation control controlling part Signal, output drives power of motor to drive the driving signal of module, and its main circuit is photoelectrical coupler；Power of motor drives mould Block is used for driving brush direct current motor, drives control surface deflection after drive mechanism.Three terminal voltage regulator circuit provides 1 tunnel+12V electricity Source, uses for Phototube Coupling and driving module.

As it will be easily appreciated by one skilled in the art that and the foregoing is only preferred embodiment of the present utility model, not In order to limit this utility model, all any amendment, equivalents made within spirit of the present utility model and principle and changing Enter, within should be included in protection domain of the present utility model.

Claims (5)

1. an electric rudder system based on TMS320F28335, it is characterised in that comprise controller (1) and electric steering engine (2)； Described controller (1) comprises: TMS320F28335 controller (11), A/D change-over circuit (111), CAN interface circuit (12), rudder Feedback signal processing circuit (13), current signal process circuit (14), Programmable Logic Device (15), buffer (16), cross stream Testing circuit (17)；

The control signal that the host computer of described electric rudder system sends is connected to described through described CAN interface circuit (12) TMS320F28335 controller (11), the most described rudder feedback signal processing circuit (13), described current signal process circuit (14) outfan is connected to described A/D change-over circuit (111), described A/D change-over circuit (111) and described TMS320F28335 Controller (11) connects, and the outfan of described TMS320F28335 controller (11) is connected to described Programmable Logic Device (15) Input, the outfan of described Programmable Logic Device (15) is connected to the input of described buffer (16), described buffering The outfan of device (16) is linked to the input of described electric steering engine (2), and the current signal of described electric steering engine (2) is through described Over-current detection circuit (17) sends into Programmable Logic Device (15).

A kind of electric rudder system based on TMS320F28335, it is characterised in that also include DC/ DC changer (18) and low-dropout regulator (19), described DC/DC changer (18) has two outfans, output ± 15V voltage, another exports+5V voltage；Outfan output+3.3V the voltage of described low-dropout regulator (19) and+1.8V electricity Pressure, input connects the+5V voltage output end of described DC/DC changer (18).

A kind of electric rudder system based on TMS320F28335, it is characterised in that described electronic rudder Machine (2) comprises: photoelectric isolating circuit (21), drive circuit (22), motor and drive mechanism (23), output shaft (24), electric current pass Sensor (25), angular transducer (26)；

The outfan of described photoelectric isolating circuit (21) is connected to the input of described drive circuit (22), described drive circuit (22) outfan one tunnel is connected to described controller (1) through current sensor (25), and another road is connected to motor and driver The input of structure (23), described motor and drive mechanism (23) outfan are connected to described output shaft (24), described angle sensor The corner of device (26) sensing output shaft (24), output to described controller (1).

A kind of electric rudder system based on TMS320F28335, it is characterised in that described driving electricity Road (22) comprises three terminal regulator (221) and drives module (222), and the motor in motor and drive mechanism (23) is DC brush Motor.

A kind of electric rudder system based on TMS320F28335, it is characterised in that also include photoelectricity Isolation circuit (21) and angular transducer (26)；Described photoelectric isolating circuit (21) is connected to the output of described buffer (16) End, the outfan of described current sensor (25) is connected to the input of described signal processing circuit (14), described angle sensor The outfan of device (26) is connected to the input of described signal processing circuit (13).