CN203261288U

CN203261288U - Multi-processor control device for alternating-current servo motor

Info

Publication number: CN203261288U
Application number: CN 201320308484
Authority: CN
Inventors: 陈孟元; 周萌; 方愿捷; 凌有铸; 李腾飞
Original assignee: Anhui Polytechnic University
Current assignee: Anhui Polytechnic University
Priority date: 2013-05-30
Filing date: 2013-05-30
Publication date: 2013-10-30
Anticipated expiration: 2023-05-30

Abstract

The utility model discloses a multi-processor control device for an alternating-current servo motor, and the device comprises a rectifier, a filter, an inverter, a switching power supply, a processing unit, a detection module, an input module, and a display module. The processing module comprises a DSP processing chip and an FPGA processing chip which are connected with each other. The FPGA processing chip receives a user instruction via the input module and outputs the corresponding data of a rotating speed to the DSP processing chip. Meanwhile, the FPGA processing chip outputs the rotating speed and a current, which are detected by the detection module, of the alternating-current servo motor to the DSP processing chip, and the rotating speed and the current are displayed and outputted via the display module. Double closed loop control of the alternating-current servo motor is carried out by the DSP processing chip via the inverter according to the inputted rotating-speed data, the rotating speed and the current. The multi-processor control device is advantageous by high control precision, good real-time performance of a system, high reliability, and strong anti-interference capability.

Description

The multiprocessor control device that is used for AC servo motor

Technical field

The utility model relates to machine field, is specifically related to a kind of multiprocessor control device for AC servo motor.

Background technology

Along with social development and scientific and technological progress, the propagation and employment of Numeric Control Technology and Servo Drive Technology's is depended in manufacturing progress to a great extent.The research work of present domestic this respect is particularly far lagging behind World Developed Countries aspect technological innovation and the Industry Promotion.

The permagnetic synchronous motor servo drive system that China produces at present, the feed servo power bracket has reached 20W～7.5kW, and the main axle servo power bracket has covered 3.5kW～22kW, aspect Performance and quality large increase has been arranged.The hardware of driver generally adopts: dedicated digital signal processor (DSP), extensive field programmable logic array (FPGA) and Intelligent Power Module (IPM).Soft and hardware defencive function with complete short circuit, overcurrent, overvoltage, under-voltage, pump liter, the various faults such as overheated, and simple to operate, reliability is high, volume is small and exquisite, be easy to install.Be to adapt to the present power grid quality of China, the voltage scope of application scope of portioned product reached ± 20%, exceeded product voltage range that national standard requires and be+10%～-15% and stipulated.Also there are certain gap in the properties of product of China's servo drive system, product reliability aspect with external product.Particularly aspect the high-performance Servo Drive Technology's of total digitalization, still there is larger gap with external band-name enterprise, become " bottleneck " problem that restriction China develops medium-to-high grade digital control system industry.Be mainly reflected in: servo drive system does not possess the high-speed digitization network interface substantially, a large amount of pulsed control interfaces that adopt on the servo drive, and this interface is subjected to the restriction of pulse frequency, can't satisfy the requirement of high speed, high-precision control.The AC servo control system of existing multiprocessor takes industrial computer to realize control system as host computer more, and its application cost is generally higher.The signal transmission form of the architecture of the control device of AC servo motor, servo-driver and controller etc. directly affects and is determining the AC servo performance.

The utility model content

The technical problems to be solved in the utility model provides the multiprocessor control device that is used for AC servo motor that a kind of control precision is high, system real time is good, reliability is high, antijamming capability is strong.

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

A kind of multiprocessor control device for AC servo motor, comprise rectifier, filter, inverter, Switching Power Supply, processing unit, detection module, input module and display module, described processing unit comprises interconnective DSP process chip and FPGA process chip, external power source passes through rectifier successively, filter, inverter links to each other with AC servo motor, the output of described filter by Switching Power Supply respectively with the DSP process chip, the FPGA process chip links to each other, described FPGA process chip respectively with detection module, input module, display module links to each other, described FPGA process chip receives the rotary speed data of user instruction and output correspondence to the DSP process chip by input module, described FPGA process chip of while is exported to rotating speed and the electric current of the AC servo motor that detection module detects the DSP process chip and is shown output by display module, and described DSP process chip is according to the rotary speed data of input, rotating speed and electric current carry out two closed-loop controls by inverter to AC servo motor.

As further improvement in the technical proposal:

Described inverter is the IPM inverter; described DSP process chip comprises six road pwm pulse output pins; described six road pwm pulse output pins link to each other with the control end of inverter; also be provided with the IPM protective circuit between described inverter and the DSP process chip; the input of described IPM protective circuit links to each other with the fault output pin of inverter, and the output of described IPM protective circuit links to each other with the DSP process chip.

The utlity model has following advantage: the utility model comprises rectifier, filter, inverter, Switching Power Supply, processing unit, detection module, input module and display module, processing unit comprises interconnective DSP process chip and FPGA process chip, external power source passes through rectifier successively, filter, inverter links to each other with AC servo motor, the output of filter by Switching Power Supply respectively with the DSP process chip, the FPGA process chip links to each other, the FPGA process chip respectively with detection module, input module, display module links to each other, the FPGA process chip receives the rotary speed data of user instruction and output correspondence to the DSP process chip by input module, while FPGA process chip is exported to rotating speed and the electric current of the AC servo motor that detection module detects the DSP process chip and is shown output by display module, the DSP process chip is according to the rotary speed data of input, rotating speed and electric current carry out two closed-loop controls by inverter to AC servo motor, because processing unit comprises interconnective DSP process chip and FPGA process chip, so that structure is separated between control and the detection, alleviated the processing load of conventional single-processor, so that control and detection can be carried out simultaneously, reduce the reaction time, improved greatly system real time, reliability and antijamming capability; The input module that it is easy reduces the AC servo control system cost greatly, has control precision height, system real time is good, reliability is high, antijamming capability is strong advantage.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes 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 according to these accompanying drawings other accompanying drawing.

Fig. 1 is the frame structure schematic diagram of the utility model embodiment.

Fig. 2 is the circuit connection structure schematic diagram of processing unit among the utility model embodiment.

Marginal data: 1, rectifier; 2, filter; 3, inverter; 31, IPM protective circuit; 4, Switching Power Supply; 5, processing unit; 51, DSP process chip; 52, FPGA process chip; 6, detection module; 7, input module; 8, display module; 9, AC servo motor.

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 range of the present utility model is made more explicit defining.

As shown in Figure 1, the multiprocessor control device that present embodiment is used for AC servo motor comprises rectifier 1, filter 2, inverter 3, Switching Power Supply 4, processing unit 5, detection module 6, input module 7 and display module 8, processing unit 5 comprises interconnective DSP process chip 51 and FPGA process chip 52, external power source is successively by rectifier 1, filter 2, inverter 3 links to each other with AC servo motor 9, the output of filter 2 by Switching Power Supply 4 respectively with DSP process chip 51, FPGA process chip 52 links to each other, FPGA process chip 52 respectively with detection module 6, input module 7, display module 8 links to each other, FPGA process chip 52 receives the rotary speed data of user instruction and output correspondence to DSP process chip 51 by input module 7, while FPGA process chip 52 is exported to rotating speed and the electric current of the AC servo motor 9 that detection module 6 detects DSP process chip 51 and is shown output by display module 8, and DSP process chip 51 is according to the rotary speed data of inputting, rotating speed and electric current carry out two closed-loop controls by 3 pairs of AC servo motors of inverter 9.

In the present embodiment; inverter 3 is the IPM inverter; DSP process chip 51 comprises six road pwm pulse output pins; six road pwm pulse output pins link to each other with the control end of inverter 3; also be provided with IPM protective circuit 31 between inverter 3 and the DSP process chip 51; the input of IPM protective circuit 31 links to each other with the fault output pin of inverter 3, and the output of IPM protective circuit 31 links to each other with DSP process chip 51.

In the present embodiment; inverter 3 is used for driving servomotor; the servomotor three phase mains is provided; inverter 3 specifically is comprised of fairchild's inverter FSBB20CH60 and peripheral circuit thereof; 6 road PWM output pins of the input of inverter 3 and DSP process chip 51 need not optocoupler and directly link to each other; output U, V, W three-phase voltage directly link to each other with servomotor, and its fault pin links to each other with IPM protective circuit 31.IPM protective circuit 31 is for the protection of inverter module; prevent that circuit and chip from damaging; IPM protective circuit 31 links to each other with the fault pin of inverter 3, connects the IO mouth of DSP process chip 51 after IPM protective circuit 31 is processed, by DSP process chip 51 failure judgement types.Switching Power Supply 4 is the stabilized voltage power supply with copped wave module of fixed frequency, is used for guaranteeing the steady operation of processing unit 5 each chipset.DSP process chip 51 is for generation of the structure of PWM waveform and digital closed-loop system, and the model of DSP process chip 51 is TMS320LF2812, and chip and peripheral circuit form the minimum work system of dsp chip jointly.FPGA process chip 52 is crossed the SPI interface for the data communication device after the numerical value of detection module 6 is processed and will be processed and is sent DSP process chip 51 to; The model of FPGA process chip 52 is EP1C12, and chip and peripheral circuit form the minimum work system of fpga chip jointly.As shown in Figure 2, link to each other by the SPI interface between DSP process chip 51 and the FPGA process chip 52.Detection module 6 is used for rotating speed and the electric current of servomotor are detected, and detection module 6 comprises Hall element and Hall testing circuit and current detection circuit, for detection of rotating speed and the electric current of AC servo motor 9.Input module 7 is used for receiving user's setup parameter, and input module 7 adopts button to realize that button comprises 5 functions, speed setting, rotating speed increase, rotating speed minimizing, forward, counter-rotating and braking function, and input module 7 links to each other with FPGA process chip 52.Display module 8 is used for showing current motor operating parameter, and display module 8 adopts LCD to realize, display module 8 is used for showing when the every state of front motor and sets each parameter that display module 8 links to each other with FPGA process chip 52.

The job step of present embodiment is as follows: in the running of AC servo motor 9, set the rotating speed of AC servo motor 9 by input module 7 inputs, finish the increase and decrease of motor speed by input module 7, the function such as rotating and braking, the instruction process that FPGA process chip 52 is received button becomes corresponding rotating speed, send to the given input that DSP process chip 51 is finished control system by the SPI interface, DSP process chip 51 is after obtaining given rotating speed, produce 6 road PWM ripples, 6 road PWM ripple control inverters 3 produce the voltage that comprises space vector, and then the rotating speed of control AC servo motor 9.Detection module 6 detects rotating speed and the electric current of AC servo motor 9 simultaneously, detection module 6 sends to these data that detect in the FPGA process chip 52, the data that 52 pairs of detection modules 6 of FPGA process chip collect are carried out digital filtering and are processed, filtered data communication device is crossed the SPI interface to be sent in the DSP process chip 51, consisted of the double circle structure of whole AC servo control system by

DSP process chip

51,52 pairs of display module 8 data writings of FPGA process chip simultaneously, with the data feedback of motor operation to the user.

The above only is preferred implementation of the present utility model, and protection range of the present utility model is not limited in above-mentioned execution mode, and every technical scheme that belongs to the utility model principle all belongs to protection range 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 range of the present utility model.

Claims

1. multiprocessor control device that is used for AC servo motor, it is characterized in that: comprise rectifier (1), filter (2), inverter (3), Switching Power Supply (4), processing unit (5), detection module (6), input module (7) and display module (8), described processing unit (5) comprises interconnective DSP process chip (51) and FPGA process chip (52), external power source is successively by rectifier (1), filter (2), inverter (3) links to each other with AC servo motor (9), the output of described filter (2) by Switching Power Supply (4) respectively with DSP process chip (51), FPGA process chip (52) links to each other, described FPGA process chip (52) respectively with detection module (6), input module (7), display module (8) links to each other, described FPGA process chip (52) receives the rotary speed data of user instruction and output correspondence to DSP process chip (51) by input module (7), described FPGA process chip of while (52) is exported to rotating speed and the electric current of the AC servo motor (9) that detection module (6) detects DSP process chip (51) and is shown output by display module (8), and described DSP process chip (51) is according to the rotary speed data of inputting, rotating speed and electric current carry out two closed-loop controls by inverter (3) to AC servo motor (9).

2. the multiprocessor control device for AC servo motor according to claim 1; it is characterized in that: described inverter (3) is the IPM inverter; described DSP process chip (51) comprises six road pwm pulse output pins; described six road pwm pulse output pins link to each other with the control end of inverter (3); also be provided with IPM protective circuit (31) between described inverter (3) and the DSP process chip (51); the input of described IPM protective circuit (31) links to each other with the fault output pin of inverter (3), and the output of described IPM protective circuit (31) links to each other with DSP process chip (51).