CN203133570U

CN203133570U - ARM and FPGA-based control apparatus for numerical control machine tool

Info

Publication number: CN203133570U
Application number: CN 201320144647
Authority: CN
Inventors: 陈孟元; 曹龙; 陈跃东
Original assignee: Anhui Polytechnic University
Current assignee: Anhui Polytechnic University
Priority date: 2013-03-15
Filing date: 2013-03-15
Publication date: 2013-08-14
Anticipated expiration: 2023-03-15

Abstract

The utility model disclosed an ARM and FPGA-based control apparatus for a numerical control machine tool. The control apparatus comprises an operation panel (1), an input and output device (2), a numerical control machine tool control unit (3), an LCD display screen (4) and a servo module (5). The numerical control machine tool control unit (3) comprises an ARM processor (31) and an FPGA processing unit (32) which are connected with each other. The ARM processor (31) is connected with the operation panel (1), the input and output device (2) and the LCD display screen (4) respectively. The FPGA processing unit (32) is connected with a numerical control machine tool body through the servo module (5). The control apparatus has advantages of having a high data processing capability and a fast processing speed, being high in processing precision, rich in interface, simple in operation interface, practical and convenient.

Description

Numerically-controlled machine control device based on ARM and FPGA

Technical field

The utility model relates to the numerically-controlled machine field, is specifically related to a kind of numerically-controlled machine control device based on ARM and FPGA.

Background technology

Digital control system is the core of numerically-controlled machine, is the key factor that determines the numerically-controlled machine Performance And Reliability.Early stage digital control system has experienced several stages such as electron tube, transistor, small scale integration, middle large scale integrated circuit.Their common characteristic are that the control function is mainly realized by the hardware of system, and this type systematic is called the hardware digital control system.

Along with development of computer, the structure of digital control system has had significant change, has produced the Computerized digital control system (CNC) that systemic-function is realized by control software.This system has overcome the greatest weakness of hardware digital control system, and flexibility is very big, thereby has promoted the raising of development of numerical control (NC) technology and output greatly, has guaranteed that the transmission, interpolation, the control of processing line speed etc. of parts program are handled continuously.The CNC system has sufficiently high data processing speed and ability, and becomes the main flow of current digital control system.

Embedded system is one of the fastest technology of developed recently, nowadays not only to have brought into play cost low for the embedded system of 32 flush bonding processors, and the characteristics that volume is little have also improved integrated level and reliability, can be in the digital control system of aspect of performance near PC, form this aspect but than low many of PC.Digital control system is the Mechatronic control system of a complexity, and it needs good real-time performance and good reliability, adopts high performance flush bonding processor to can be good at satisfying these requirements.Along with development of numerical control (NC) technology, speed and the accuracy requirement of processing are more and more higher, and the interface of various peripheral hardwares is also more and more abundanter, and the interface of operation is also very complicated, and traditional microprocessor can not satisfy the requirement of digital control system preferably.

The utility model content

The technical problems to be solved in the utility model provides a kind of data-handling capacity height, process velocity is fast, machining precision is high, rich interface, simple, the practical and convenient numerically-controlled machine control device based on ARM and FPGA of operation interface.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is:

A kind of numerically-controlled machine control device based on ARM and FPGA, comprise guidance panel, input-output device, numerically-controlled machine control module, LCD display and servo module, described numerically-controlled machine control module comprises interconnective arm processor and FPGA processing unit, described arm processor links to each other with guidance panel, input-output device, LCD display respectively, and described FPGA processing unit links to each other with the machine body of numerically-controlled machine by servo module.

As further improvement in the technical proposal:

Described FPGA processing unit comprises the ARM interface, timer, system register, handwheel counter interface, the photoelectric encoder interface, feeding X-axis servo unit, feeding Z axle servo unit and spindle servo unit, described timer, system register links to each other with arm processor by the ARM interface respectively, described timer links to each other with system register, described system register respectively with handwheel counter interface, the photoelectric encoder interface, feeding X-axis servo unit, feeding Z axle servo unit, spindle servo unit links to each other, described handwheel counter interface, the photoelectric encoder interface, feeding X-axis servo unit, feeding Z axle servo unit, spindle servo unit links to each other with the machine body of numerically-controlled machine by servo module respectively.

The utlity model has following advantage:

1, numerically-controlled machine control module of the present utility model comprises interconnective arm processor and FPGA processing unit, arm processor respectively with guidance panel, input-output device, LCD display links to each other, the FPGA processing unit links to each other with the machine body of numerically-controlled machine by servo module, the embedded technology of arm processor and the practicality of FPGA processing unit, make the utility model adopt the PC system in real-time performance relatively, stability, volume, there is outstanding performance aspects such as power consumption, have the data-handling capacity height, process velocity is fast, the machining precision height, rich interface, operation interface is simple, practical and convenient advantage.

2, numerically-controlled machine control module of the present utility model comprises interconnective arm processor and FPGA processing unit, arm processor links to each other with guidance panel, input-output device, LCD display respectively, the FPGA processing unit links to each other with the machine body of numerically-controlled machine by servo module, the embedded technology of arm processor and the practicality of FPGA processing unit, owing to adopted embedded technology to make the simple in structure, cheap of system and advantage practical, applied widely.

3, arm processor of the present utility model has abundant Peripheral Interface, and ability to communicate is strong and expansion is convenient.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the framed structure synoptic diagram of the utility model embodiment.

Fig. 2 is the framed structure synoptic diagram of numerically-controlled machine control module among the utility model embodiment.

Fig. 3 is the function connection diagram of numerically-controlled machine control module among the utility model embodiment.

Marginal data: 1, guidance panel; 2, input-output device; 3, numerically-controlled machine control module; 31, arm processor; 32, FPGA processing unit; 321, ARM interface; 322, timer; 323, system register; 324, handwheel counter interface; 325, photoelectric encoder interface; 326, feeding X-axis servo unit; 327, feeding Z axle servo unit; 328, spindle servo unit; 4, LCD display; 5, servo module.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model is made more explicit defining.

As Fig. 1, Fig. 2 and shown in Figure 3, the numerically-controlled machine based on ARM and FPGA of present embodiment comprises guidance panel 1, input-output device 2, numerically-controlled machine control module 3, LCD display 4 and servo module 5 with control device, numerically-controlled machine control module 3 comprises interconnective arm processor 31 and FPGA processing unit 32, arm processor 31 links to each other with guidance panel 1, input-output device 2, LCD display 4 respectively, and FPGA processing unit 32 links to each other with the machine body of numerically-controlled machine by servo module 5.In the present embodiment, operation UCOS operating system realizes decoding, file system, network and graphical display function on the arm processor 31.Present embodiment is in order to increase the calculating interface capability, arm processor 31 is being had higher requirement aspect performance and the speed, use FPGA processing unit 32 to share the part burden of arm processor 31, FPGA processing unit 32 main thin interpolation, driver, scrambler and the lathe I/O signals be responsible for are handled.Numerical control program is according to part shape to be processed and pattern, by to material, size, shape, process program is determined in requirement such as machining precision and thermal treatment, the numerically-controlled machine job sequence list of writing out according to function command code and the block format of digital control system regulation on this basis, present embodiment can be input to the nc program that writes in the arm processor 31 through input-output device 2 by guidance panel 1 in use and decipher, interpolation and computing, be used for realization to the control of servo module 5 and LCD display 4, LCD display 4 links to each other with ARM chip 31 by the LCD data bus, be used for showing the duty of current lathe, servo module 5 is that digital control system is deciphered the numerical control program that receives, after interpolation and the computing, servo drive system to each coordinate of system sends command signal, signal is handled through the amplification of overdrive circuit, drive servomotor angle displacement and angular velocity, be converted to the straight-line displacement of worktable by the kinematic train of execution unit, realize feed motion.

In the present embodiment, arm processor 31 adopts the S3C2410 chip to realize that the S3C2410 chip internal has Nand controller, sdram interface, three Asynchronous Serial Interface controllers, D/A interface, TFTLCD controller, LCD data line and jtag interfaces.The S3C2410 chip internal has the Nand controller, can directly connect NandFlash K9F1208 flash chip.The S3C2410 chip internal has sdram interface, can directly connect the SDRAM of 64MB.The S3C2410 chip internal has three Asynchronous Serial Interface controllers, by level transferring chip MAX3232, can expand the RS232 serial ports, is used for the communication between digital control system and PC.The D/A interface is used for the servo speed of control feed shaft.Operation keyboard links to each other with ARM by RS485, the scanning of complete operation key and key assignments identification.The S3C2410 chip internal has TFTLCD controller and LCD data line, by bus driver, can directly connect LCD display 4, and LCD display 4 is 64K look 640*480 LCD in the present embodiment.The S3C2410 chip includes jtag interface, is used for exploitation and the emulation of ARM.Operation UCOS operating system realizes decoding, file system, network and graphical display function on the S3C2410 chip.

In the present embodiment, FPGA processing unit 32 adopts the EP1K30QC208 chip, is mainly used in sharing the part burden of ARM, improves performance and the computing velocity of arm processor.The EP1K30QC208 chip is used for the transmission of driver pulse, the counting of encoder pulse and the read-write of outside expansion IO.This system register is used for the storage host computer and issues the command parameter of FPGA, pulse parameter, cycle parameter etc., and the internal module of FPGA is finished corresponding operation according to the value of these registers.This timer sends look-at-me to host computer at each interpolation cycle, and host computer is after receiving respective interrupt, and the pulse information that needs are sent writes impulse register, is used for the transmission of next round.Abort Timer has only one-period register TPRD, and the timer cycle is: (TPRD+1)/and TCLK.TCLK is 400 frequency divisions of EP1K30QC208 chip clock input SYSCLK.Timer enables to beginning counting when enabling at the timer of system register SYS.400 frequency divisions by the system clock SYSCLK of subtimer obtain TCLK, and timer is counted on the basis of TCLK, when the counting number equals number in the period register, the timer down trigger, at next clock constantly, interrupt clear restarts count cycle of next round.The umber of pulse that this driver pulse sending module is used for interpolation is calculated sent with certain cycle and pulse.Module has two 16 register, is respectively applied to deposit the pulse number of needs transmission and the cycle of pulse.Can be input to the practical input-output device 2 of the nc program that writes in FPGA processing unit 32 devices by guidance panel 1 decipher, after interpolation and the computing, send command signal by FPGA processing unit 32 to the servo drive system of each coordinate of servo module 5, signal is handled through the amplification of the driving circuit of servo module 5, driving servomotor angle displacement and the angular velocity of servo module 5, be converted to the straight-line displacement of worktable by the kinematic train of execution unit, realize feed motion.Simultaneously, numerical control device is realized other necessary auxiliary movement of system by the heavy-current control device, as the automatic start-stop of fluid drive, cooling-lubricant, the automatic pine folder of workpiece and the automatic replacing of cutter etc., cooperates feed motion to finish the automatic processing of part.

In the present embodiment, FPGA processing unit 32 comprises ARM interface 321, timer 322, system register 323, handwheel counter interface 324, photoelectric encoder interface 325, feeding X-axis servo unit 326, feeding Z axle servo unit 327 and spindle servo unit 328, timer 322, system register 323 links to each other with arm processor 31 by ARM interface 321 respectively, timer 322 links to each other with system register 323, system register 323 respectively with handwheel counter interface 324, photoelectric encoder interface 325, feeding X-axis servo unit 326, feeding Z axle servo unit 327, spindle servo unit 328 links to each other handwheel counter interface 324, photoelectric encoder interface 325, feeding X-axis servo unit 326, feeding Z axle servo unit 327, spindle servo unit 328 links to each other with the machine body of numerically-controlled machine by servo module 5 respectively.

The above only is preferred implementation of the present utility model, and protection domain of the present utility model is not limited in above-mentioned embodiment, and every technical scheme that belongs to the utility model principle all belongs to protection domain of the present utility model.For a person skilled in the art, some improvements and modifications of under the prerequisite that does not break away from principle of the present utility model, carrying out, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. numerically-controlled machine control device based on ARM and FPGA, comprise guidance panel (1), input-output device (2), numerically-controlled machine control module (3), LCD display (4) and servo module (5), it is characterized in that: described numerically-controlled machine control module (3) comprises interconnective arm processor (31) and FPGA processing unit (32), described arm processor (31) respectively with guidance panel (1), input-output device (2), LCD display (4) links to each other, and described FPGA processing unit (32) links to each other with the machine body of numerically-controlled machine by servo module (5).

2. the numerically-controlled machine control device based on ARM and FPGA according to claim 1, it is characterized in that: described FPGA processing unit (32) comprises ARM interface (321), timer (322), system register (323), handwheel counter interface (324), photoelectric encoder interface (325), feeding X-axis servo unit (326), feeding Z axle servo unit (327) and spindle servo unit (328), described timer (322), system register (323) links to each other with arm processor (31) by ARM interface (321) respectively, described timer (322) links to each other with system register (323), described system register (323) respectively with handwheel counter interface (324), photoelectric encoder interface (325), feeding X-axis servo unit (326), feeding Z axle servo unit (327), spindle servo unit (328) links to each other, described handwheel counter interface (324), photoelectric encoder interface (325), feeding X-axis servo unit (326), feeding Z axle servo unit (327), spindle servo unit (328) links to each other with the machine body of numerically-controlled machine by servo module (5) respectively.