CN208986854U - A kind of servo control circuit based on contactless measurement - Google Patents

Abstract

The utility model discloses a kind of servo control circuits based on contactless measurement, it is total to connection module, signal optimization module and signal micro treatment module including master signal module, V processing module, H/L AM access module, MN, is electrically connected between the terminal of the master signal module and the terminal of processing module.This handles the circuit of Hall sensor and orthogonal encoder based on the servo control circuit of contactless measurement due to saving, so may not need the I/O port that selection has both processing circuits in the selection of processing chip, so it is smaller to can choose volume, power consumption is lower, the more cheap processing chip of price, the rotation angle of motor is measured by the B_EMF of motor, accurate angle of rotor of motor is converted to by the software operation of chip interior, the control to noninductive motor can be realized well, it is observed in the case where controlling noninductive motor operation, it was found that motor overall performance has gone out high-precision, the effect of high dynamic performance.

Description

A kind of servo control circuit based on contactless measurement

Technical field

The utility model relates to servo control circuit technical field, specially a kind of SERVO CONTROL electricity based on contactless measurement Road.

Background technique

General high-precision, high dynamic performance control in order to realize once-through type brushless motor, requires to know that motor turns The current location of son and current speed, thoughts motor and noninductive motor are needed to be carried out control using control circuit and make more With.

Control circuit in the market can not save the circuit of Hall sensor and orthogonal encoder in Servo Control Board, thus Cause the volume of controller larger, so that servo controller is more suitably applied to volume and is limited, and moistureproof and waterproof can not be suitable for Degree of protection high application the problem of, for this purpose, it is proposed that it is a kind of it is based on contactless measurement, hall sensing can be saved The servo control circuit based on contactless measurement of device and orthogonal encoder.

Utility model content

The purpose of this utility model is to provide a kind of servo control circuits based on contactless measurement, to solve above-mentioned background The control circuit proposed in technology can not save the circuit of Hall sensor and orthogonal encoder in Servo Control Board, so as to cause The volume of controller is larger, so that servo controller is more suitably applied to, volume is limited, and can not be suitable for the anti-of moistureproof and waterproof The problem of protecting grade high application.

To achieve the above object, the utility model provides the following technical solutions: a kind of SERVO CONTROL based on contactless measurement Circuit, including master signal module, V processing module, H/L AM access module, MN are total to connection module, signal optimization module and the micro- place of signal Module is managed, to be electrically connected between the terminal of the master signal module and the terminal of processing module, and master signal module Terminal accesses the terminal of H/L AM access module, and a terminal of the master signal module accesses a terminal of signal optimization module, and The terminal access MN of signal optimization module be total to a terminal of connection module, the master signal module and signal micro treatment module it Between for be electrically connected, the MN be total between the terminal and R45 resistance of connection module for electric connection.

Preferably, it is between the D18 zener diode of the signal micro treatment module, E1 capacitor and C30 capacitor and links Structure, and the VSS terminal of U12 master signal module and signal micro treatment module and connect the input terminal that connection module is total into MN.

Preferably, it there are three R45 resistance settings, and R45 resistance and connects and is total to connection module, and R45 resistance into MN With R46 resistance and connect NW terminal into master control signaling module, and R46 resistance, C36 capacitor and MN be total to connection module terminal it Between constitute be sequentially connected in series structure.

Preferably, one end of a terminal of the capacitor C31 of the V processing module, a terminal of E2 and D15 zener diode Substring couples VS (U) terminal into master control signaling module, and the another terminal of capacitor C31, the another terminal of E2 and D15 pressure stabilizing two The another terminal series connection of pole pipe enters VB (U) terminal of master control signaling module, and D15 zener diode, two pole of D16 pressure stabilizing Pipe and D17 and zener diode are simultaneously connected into master control signaling module.

Preferably, to be electrically connected between the H/L AM access module and master signal module, and R77 resistance and C34 capacitor Series connection enters the VFO terminal of master control signaling module.

Exist compared with prior art, the utility model has the beneficial effects that being somebody's turn to do the servo control circuit based on contactless measurement The circuit of Hall sensor and orthogonal encoder can be saved in Servo Control Board, it will be apparent that the volume for reducing controller makes Servo controller is more suitably applied to that volume is limited, and the high application of degree of protection of moistureproof and waterproof, simultaneously because saving Go processing Hall sensor and orthogonal encoder circuit, so processing chip selection on may not need selection have this two The chip of kind processing port, it is possible to the processing chip that volume is smaller, power consumption is lower, price is more cheap is selected, motor Rotation angle is measured by the counter electromotive force B_EMF of motor, is carried out high-speed computation by the software of chip interior and is converted to Accurate angle of rotor of motor, in sensor-less operation, tachometric survey effect for distribution of mean value is undesirable, this is logical Often mean or viewer debugging is improper or is exactly that speed is very low, is seen so that good induction B-emf can not be obtained Measured data value (such as locked rotor) can save the circuit of Hall sensor and orthogonal encoder in Servo Control Board, bright The volume of controller is reduced aobviously, so that servo controller is more suitably applied to the high applied field of the limited tool degree of protection of volume It closes；Due to saving the circuit of processing Hall sensor and orthogonal encoder, so may not need choosing in the selection of processing chip Select the I/O port with both processing circuits, it is possible to select the processing that volume is smaller, power consumption is lower, price is more cheap The rotation angle of chip, motor is measured by the B_EMF of motor, is converted to accurately by the software operation of chip interior Angle of rotor of motor can realize the control to noninductive motor well, be observed in the case where controlling noninductive motor operation, It was found that motor overall performance has gone out high-precision, the effect of high dynamic performance.

Detailed description of the invention

Fig. 1 is the utility model circuit diagram；

Fig. 2 is the utility model module connection structure schematic diagram.

In figure: C1 --- master signal module；C2 --- V processing module；C3 --- H/L AM access module；C4 --- MN is total Connection module；C5 --- signal optimization module；C6 --- signal micro treatment module.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of SERVO CONTROL electricity based on contactless measurement Road, including master signal module, V processing module, H/L AM access module, MN are total to connection module, signal optimization module and signal micro process Module, to be electrically connected between the terminal of the master signal module and the terminal of processing module, and the end of master signal module The terminal of son access H/L AM access module, a terminal of the terminal access signal optimization module of the master signal module, and believe The terminal access MN of number optimization module is total to a terminal of connection module, between the master signal module and signal micro treatment module To be electrically connected, the MN is total between the terminal and R45 resistance of connection module to be electrically connected.

Working principle: for this kind of servo control circuit based on contactless measurement, it is primarily based on the servo of contactless measurement Control circuit can save the circuit of Hall sensor and orthogonal encoder in Servo Control Board, it will be apparent that reduce controller Volume so as to be more suitably applied to volume limited for servo controller, and the high application of degree of protection of moistureproof and waterproof, together When due to save processing Hall sensor and orthogonal encoder circuit, so processing chip selection on may not need selection Chip with both processing ports, it is possible to select the processing core that volume is smaller, power consumption is lower, price is more cheap The rotation angle of piece, motor is measured by the counter electromotive force B_EMF of motor, carries out high speed fortune by the software of chip interior Calculation is converted to accurate angle of rotor of motor, and in sensor-less operation, effect is not for distribution of mean value for tachometric survey Ideal, this often means that or viewer debugging it is improper or be exactly that speed is very low so that good lure can not be obtained B-emf observed data value (such as locked rotor) is led, Hall sensor and orthogonal encoder can be saved in Servo Control Board Circuit, it will be apparent that the volume of controller is reduced, so that servo controller is more suitably applied to the limited tool degree of protection of volume High application；Due to saving the circuit of processing Hall sensor and orthogonal encoder, so in the selection of processing chip May not need selection have both processing circuits I/O port, it is possible to select volume is smaller, power consumption is lower, price more The rotation angle of cheap processing chip, motor is measured by the B_EMF of motor, is turned by the software operation of chip interior It is changed to accurate angle of rotor of motor, can realize the control to noninductive motor well, the case where controlling noninductive motor operation Under be observed, discovery motor overall performance has gone out high-precision, the effect of high dynamic performance, completes like this entirely based on noninductive The use process of the servo control circuit of measurement.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of servo control circuit based on contactless measurement, including master signal module, V processing module, H/L AM access module, MN is total to connection module, signal optimization module and signal micro treatment module, it is characterised in that: the terminal of the master signal module and place It manages to be electrically connected between the terminal of module, and the terminal of the terminal access H/L AM access module of master signal module, the master control One terminal of the terminal access signal optimization module of signaling module, and the terminal access MN of signal optimization module is total to connection module A terminal, to be electrically connected between the master signal module and signal micro treatment module, the MN is total to one end of connection module It is electric connection between son and R45 resistance.

2. a kind of servo control circuit based on contactless measurement according to claim 1, it is characterised in that: the signal is micro- It is Parallel connection structure between the D18 zener diode of processing module, E1 capacitor and C30 capacitor, and the VSS of U12 master signal module Terminal and signal micro treatment module simultaneously connect the input terminal that connection module is total into MN.

3. a kind of servo control circuit based on contactless measurement according to claim 1, it is characterised in that: the R45 electricity There are three resistance settings, and R45 resistance and connects and be total to connection module into MN, and R45 resistance and R46 resistance and connect into master signal The NW terminal of module, and R46 resistance, C36 capacitor and MN are total between connection module terminal to constitute and are sequentially connected in series structure.

4. a kind of servo control circuit based on contactless measurement according to claim 1, it is characterised in that: the V processing A terminal, a terminal of E2 of the capacitor C31 of module couples with one end substring of D15 zener diode into master control signaling module VS (U) terminal, and the another terminal of the another terminal of capacitor C31, E2 and the another terminal series connection of D15 zener diode are become owner of VB (U) terminal of signaling module is controlled, and D15 zener diode, D16 zener diode and D17 and zener diode and is connected Enter master control signaling module.

5. a kind of servo control circuit based on contactless measurement according to claim 1, it is characterised in that: the H/L connects Enter to be electrically connected between module and master signal module, and R77 resistance and C34 capacitor series connection enter master control signaling module VFO terminal.