Regulating circuit and temperature control device

Abstract

The utility model discloses a regulating circuit and a temperature control device, and relates to the technical field of circuits, a setting end is composed of a resistor, a subtracter is composed of a resistor and an operational amplifier, an in-phase proportional amplification circuit is composed of a resistor and an operational amplifier, and an in-phase integral amplification circuit is composed of a resistor, a capacitor and an operational amplifier. The differential amplification circuit is composed of a resistor, a capacitor and an operational amplifier, the in-phase addition circuit is composed of a resistor and an operational amplifier, and the capacitor, the resistor and the operational amplifier are all hardware, so that the adjusting circuit is composed of hardware. The adjusting circuit converts the set numerical value and the actual numerical value into corresponding voltages and then performs compensation adjustment, and the actual voltage and the actual numerical value are determined, so that adjustment of the actual voltage based on the target compensation voltage is equivalent to adjustment of the actual numerical value, and adjustment of the actual numerical value through a hardware circuit is realized; the condition that the controller fails and cannot be adjusted is avoided, and the reliability is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit technical field more specifically, relate to a kind of adjusting circuit and temperature control device. BACKGROUND

[0002] At present, in the application process of equipment, the equipment needs to be adjusted, such as by controller to adjust the equipment. However, when the controller fails, the equipment cannot be adjusted, and the reliability is poor.

[0003] To sum up, how to provide a kind of adjusting circuit with good reliability is the problem that the technical personnel in the field urgently solves at present. SUMMARY

[0004] The utility model aims at providing a kind of adjusting circuit, it can solve the technical problem of how to provide a kind of adjusting circuit with good reliability to some extent. The utility model further provides a kind of temperature control device.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] An adjusting circuit, comprising a set end, a subtracter connected to the set end, a same-phase proportional amplification circuit, a same-phase integral amplification circuit and a differential amplification circuit connected to the subtracter respectively, and a same-phase addition circuit connected to the same-phase proportional amplification circuit, the same-phase integral amplification circuit and the differential amplification circuit respectively.

[0007] The set end is composed of a resistor, which is used to convert the set value into a set voltage;

[0008] The subtracter is composed of a resistor and an operational amplifier, which is used to output the voltage difference between the actual voltage and the set voltage, and the actual voltage includes the voltage conversion result of the actual value;

[0009] The same-phase proportional amplification circuit is composed of a resistor and an operational amplifier, which is used to output the first compensation voltage for the voltage difference;

[0010] The same-phase integral amplification circuit is composed of a resistor, a capacitor and an operational amplifier, which is used to output the second compensation voltage for the voltage difference;

[0011] The differential amplification circuit is composed of a resistor, a capacitor and an operational amplifier, which is used to output the third compensation voltage for the voltage difference;

[0012] The same-phase addition circuit is composed of a resistor and an operational amplifier, which is used to output the target compensation voltage corresponding to the first compensation voltage, the second compensation voltage and the third compensation voltage, and adjust the actual voltage based on the target compensation voltage.

[0013] Preferably, one end of the resistor R1 of the setting terminal is connected with the power supply, the other end of the resistor R1 is connected with one end of the resistor R2 of the setting terminal, and the other end of the resistor R2 is grounded.

[0014] Preferably, one end of the resistor R3 of the subtractor is connected with the actual voltage, the other end of the resistor R3 is connected with one end of the resistor R4 of the subtractor; the inverting input end of the first operational amplifier of the subtractor is connected with the other end of the resistor R3, and the non-inverting input end of the first operational amplifier is connected with the other end of the resistor R1.

[0015] Preferably, one end of the resistor R7 of the non-inverting proportional amplification circuit is connected with the other end of the resistor R4 and the output end of the first operational amplifier respectively, the other end of the resistor R7 is connected with the non-inverting input end of the second operational amplifier of the non-inverting proportional amplification circuit; one end of the resistor R6 of the non-inverting proportional amplification circuit is grounded, the other end of the resistor R6 is connected with one end of the resistor R8 of the non-inverting proportional amplification circuit, and the other end of the resistor R6 is connected with the inverting input end of the second operational amplifier.

[0016] Preferably, one end of the resistor R5 of the non-inverting integral amplification circuit is connected with the other end of the resistor R4 and the output end of the first operational amplifier respectively, the other end of the resistor R5 is connected with the non-inverting input end of the third operational amplifier of the non-inverting integral amplification circuit; one end of the resistor R9 of the non-inverting integral amplification circuit is grounded, the other end of the resistor R9 is connected with one end of the first capacitor of the non-inverting integral amplification circuit, and the other end of the resistor R9 is connected with the inverting input end of the third operational amplifier.

[0017] Preferably, one end of the second capacitor of the differential amplification circuit is connected with the other end of the resistor R4 and the output end of the first operational amplifier respectively, the other end of the second capacitor is connected with the inverting input end of the fourth operational amplifier of the differential amplification circuit, and the other end of the second capacitor is connected with one end of the resistor R10 of the differential amplification circuit; one end of the resistor R22 of the differential amplification circuit is grounded, the other end of the resistor R22 is connected with the non-inverting input end of the fourth operational amplifier.

[0018] Preferably, one end of the resistor R13 of the in-phase adder circuit is connected with the other end of the resistor R8 and the output end of the second operational amplifier respectively, and the other end of the resistor R13 is connected with the in-phase input end of the fifth operational amplifier of the in-phase adder circuit; one end of the resistor R14 of the in-phase adder circuit is connected with the other end of the first capacitor and the output end of the third operational amplifier respectively, and the other end of the resistor R14 is connected with the in-phase input end of the fifth operational amplifier; one end of the resistor R15 of the in-phase adder circuit is connected with the other end of the resistor R10 and the output end of the fourth operational amplifier respectively, and the other end of the resistor R15 is connected with the in-phase input end of the fifth operational amplifier; one end of the resistor R11 of the in-phase adder circuit is grounded, the other end of the resistor R11 is connected with the inverting input end of the fifth operational amplifier, and the other end of the resistor R11 is connected with one end of the resistor R12 of the in-phase adder circuit; the output end of the in-phase adder circuit comprises the other end of the resistor R12 and the output end of the fifth operational amplifier.

[0019] A temperature control device comprising the regulating circuit according to any one of the above, an actuator connected with the output end of the regulating circuit, and a feedback circuit connected with the input end of the regulating circuit and the actuator respectively;

[0020] The actuator is composed of a resistor and a transistor, and is used for temperature regulation of the regulated device according to a target compensation voltage;

[0021] The feedback circuit is composed of a resistor and an operational amplifier, and is used for converting the temperature of the regulated device into an actual voltage.

[0022] Preferably, one end of the resistor R16 of the actuator is connected with the output end of the regulating circuit, and the other end of the resistor R16 is connected with the base B of the first transistor of the actuator; the collector C of the first transistor is connected with one end of the heating resistor of the actuator, and the other end of the heating resistor is connected with a power supply; the emitter E of the first transistor is grounded.

[0023] One end of the resistor R20 of the feedback circuit is connected with the other end of the heating resistor, the other end of the resistor R20 is connected with one end of the resistor R21 of the feedback circuit, and the resistor R20 comprises a thermistor; the other end of the resistor R21 is connected with the emitter E of the first transistor; the in-phase input end of the sixth operational amplifier of the actuator is connected with the other end of the resistor R20, and the inverting input end of the sixth operational amplifier and the output end of the sixth operational amplifier are both connected with the input end of the subtractor.

[0024] Preferably, the temperature control device further comprises a power amplifier connected between the regulating circuit and the actuator.

[0025] One end of the resistance R23 of the power amplifier is connected with the power supply, the other end of the resistance R23 is connected with the positive pole of the diode of the power amplifier, the negative pole of the diode is connected with the output end of the adjusting circuit, the collector C of the second triode of the power amplifier is connected with one end of the resistance R23, the base B of the second triode is connected with the other end of the resistance R23, and the emitter E of the second triode is connected with one end of the resistance R16.

[0026] The setting end is composed of resistances, the subtracter is composed of resistances and operational amplifiers, the same-phase proportional amplification circuit is composed of resistances and operational amplifiers, the same-phase integral amplification circuit is composed of resistances, capacitors and operational amplifiers, the differential amplification circuit is composed of resistances, capacitors and operational amplifiers, and the same-phase addition circuit is composed of resistances and operational amplifiers, since the capacitors, the resistances and the operational amplifiers are all hardware, the adjusting circuit is composed of hardware, the setting value and the actual value are converted into corresponding voltages and then compensated and adjusted, the actual voltage is adjusted based on the target compensation voltage, which is equivalent to adjusting the actual value, the actual value is adjusted through the hardware circuit, the controller is not needed, the adjusting cannot be performed due to the controller failure does not exist, and the reliability is good. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on the provided drawings.

[0028] Figure 1 The structural schematic diagram of the adjusting circuit provided by the present application is shown in the figure;

[0029] Figure 2 The structural schematic diagram of the temperature control device of the power amplifier is shown in the figure;

[0030] Figure 3 The structural schematic diagram of the temperature control device of the power amplifier is shown in the figure;

[0031] Figure 4 The data flow direction diagram of the temperature control device of the power amplifier is shown in the figure;

[0032] Figure 5 The data flow direction diagram of the temperature control device of the power amplifier is shown in the figure;

[0033] Figure 6 The adjustment schematic view of the temperature control device is provided for the embodiments of the present application. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] Please refer to Figure 1 , Figure 1 The structure schematic view of the adjustment circuit is provided for the embodiments of the present application.

[0036] The adjustment circuit provided by the embodiments of the present application comprises a setting end, a subtracter connected with the setting end, a same-phase proportional amplification circuit, a same-phase integral amplification circuit and a differential amplification circuit connected with the subtracter respectively, a same-phase addition circuit connected with the same-phase proportional amplification circuit, the same-phase integral amplification circuit and the differential amplification circuit respectively;

[0037] The setting end is composed of resistors, and is used for converting a setting value into a setting voltage;

[0038] The subtracter is composed of resistors and operational amplifiers, and is used for outputting a voltage difference value of an actual voltage and the setting voltage, wherein the actual voltage comprises a voltage conversion result of an actual value;

[0039] The same-phase proportional amplification (Kp) circuit is composed of resistors and operational amplifiers, and is used for outputting a first compensation voltage for the voltage difference value; and the same-phase proportional amplification circuit specifically adjusts the gain of a system, improves the steady-state accuracy of the system, reduces the inertia of the system, and accelerates the response speed; through proportional control, the output signal and the input signal are proportionally reacted, so that the accurate control of the system is realized;

[0040] The same-phase integral amplification (Ki) circuit is composed of resistors, capacitors and operational amplifiers, and is used for outputting a second compensation voltage for the voltage difference value; and the same-phase integral amplification circuit integrates and processes the error signal, so that the error is gradually reduced in the control process, and the purpose of eliminating the steady-state error is finally achieved;

[0041] The differential amplification (Kd) circuit is composed of resistors, capacitors and operational amplifiers, and is used for outputting a third compensation voltage for the voltage difference value; and the differential amplification circuit specifically predicts the trend of error change, so as to adjust the control effect in advance, and avoid the oscillation and overshoot of the system in the adjustment process;

[0042] The in-phase addition circuit is composed of resistors and operational amplifiers, and is used for outputting a target compensation voltage corresponding to the first compensation voltage, the second compensation voltage and the third compensation voltage, so as to adjust the actual voltage based on the target compensation voltage.

[0043] In a specific application scenario, the size of the power supply connected to each device in the adjustment circuit can be determined according to actual needs, and the present application is described by taking 12V as an example. One end of the resistor R1 of the setting end is connected to the power supply, the other end of the resistor R1 is connected to one end of the resistor R2 of the setting end, and the other end of the resistor R2 is grounded.

[0044] In a specific application scenario, one end of the resistor R3 of the subtracter is connected to the actual voltage, and the other end of the resistor R3 is connected to one end of the resistor R4 of the subtracter; the other end of the resistor R3 is connected to the inverting input end of the first operational amplifier U1 of the subtracter, and the non-inverting input end of the first operational amplifier is connected to the other end of the resistor R1; at this time, the inverting input end of the first operational amplifier is also connected to one end of the resistor R4, and the non-inverting input end of the first operational amplifier is also connected to one end of the resistor R2.

[0045] In a specific application scenario, one end of the resistor R7 of the in-phase proportional amplification circuit is connected to the other end of the resistor R4 and the output end of the first operational amplifier, respectively, and the other end of the resistor R7 is connected to the non-inverting input end of the second operational amplifier U2 of the in-phase proportional amplification circuit; one end of the resistor R6 of the in-phase proportional amplification circuit is grounded, the other end of the resistor R6 is connected to one end of the resistor R8 of the in-phase proportional amplification circuit, and the other end of the resistor R6 is connected to the inverting input end of the second operational amplifier; at this time, the inverting input end of the second operational amplifier is also connected to one end of the resistor R8.

[0046] In a specific application scenario, one end of the resistor R5 of the in-phase integral amplification circuit is connected to the other end of the resistor R4 and the output end of the first operational amplifier, respectively, and the other end of the resistor R5 is connected to the non-inverting input end of the third operational amplifier U3 of the in-phase integral amplification circuit; one end of the resistor R9 of the in-phase integral amplification circuit is grounded, the other end of the resistor R9 is connected to one end of the first capacitor C1 of the in-phase integral amplification circuit, and the other end of the resistor R9 is connected to the inverting input end of the third operational amplifier; at this time, the inverting input end of the third operational amplifier is also connected to one end of the first capacitor.

[0047] In a specific application scenario, one end of the second capacitor C2 of the differential amplification circuit is connected with the other end of the resistor R4 and the output end of the first operational amplifier respectively, the other end of the second capacitor is connected with the inverting input end of the fourth operational amplifier U4 of the differential amplification circuit, and the other end of the second capacitor is connected with one end of the resistor R10 of the differential amplification circuit; one end of the resistor R22 of the differential amplification circuit is grounded, and the other end of the resistor R22 is connected with the non-inverting input end of the fourth operational amplifier, at this time, the inverting input end of the fourth operational amplifier is also connected with one end of the resistor R10.

[0048] In a specific application scenario, one end of the resistor R13 of the in-phase addition circuit is connected with the other end of the resistor R8 and the output end of the second operational amplifier respectively, and the other end of the resistor R13 is connected with the non-inverting input end of the fifth operational amplifier U5 of the in-phase addition circuit; one end of the resistor R14 of the in-phase addition circuit is connected with the other end of the first capacitor and the output end of the third operational amplifier respectively, and the other end of the resistor R14 is connected with the non-inverting input end of the fifth operational amplifier; one end of the resistor R15 of the in-phase addition circuit is connected with the other end of the resistor R10 and the output end of the fourth operational amplification circuit respectively, and the other end of the resistor R15 is connected with the non-inverting input end of the fifth operational amplifier; one end of the resistor R11 of the in-phase addition circuit is grounded, the other end of the resistor R11 is connected with the inverting input end of the fifth operational amplifier, and the other end of the resistor R11 is connected with one end of the resistor R12 of the in-phase addition circuit, at this time, the inverting input end of the fifth operational amplifier is also connected with one end of the resistor R12; the output end of the in-phase addition circuit comprises the other end of the resistor R12 and the output end of the fifth operational amplifier.

[0049] It should be noted that the adjusting circuit provided by the utility model is essentially a hardware PID adjusting system, and the specific values of the resistance-capacitance devices in the adjusting circuit need to be adjusted according to actual adjusting requirements, for example, if it is required to adjust the system bandwidth and make the response speed fast, the proportional amplification multiple Kp should be increased, if it is required to improve the control precision, the integral amplification coefficient Ki should be increased, and if it is required to reduce the system overshoot, the differential amplification coefficient Kd should be increased.

[0050] In the adjustment circuit provided by this utility model, the setting terminal is composed of resistors, the subtractor is composed of resistors and operational amplifiers, the non-inverting proportional amplifier circuit is composed of resistors and operational amplifiers, the non-inverting integrating amplifier circuit is composed of resistors, capacitors and operational amplifiers, the differentiating amplifier circuit is composed of resistors, capacitors and operational amplifiers, and the non-inverting adder circuit is composed of resistors and operational amplifiers. Since the capacitors, resistors and operational amplifiers are all hardware components, the adjustment circuit of this utility model is composed of hardware components. Moreover, the adjustment circuit converts the set value and the actual value into corresponding voltages and then performs compensation adjustment. Since the actual voltage and the actual value are determined, adjusting the actual voltage based on the target compensation voltage is equivalent to adjusting the actual value. This realizes the adjustment of the actual value through hardware circuits, without the need for a controller, and there is no situation where the controller fails and adjustment cannot be performed, resulting in high reliability.

[0051] Based on the above embodiments, this utility model also provides a temperature control device, including an adjustment circuit as described in any of the above embodiments, an actuator connected to the output terminal of the adjustment circuit, and a feedback circuit connected to the input terminals of the actuator and the adjustment circuit respectively; the actuator is composed of a resistor and a transistor, and is used to adjust the temperature of the regulated device according to the target compensation voltage; the feedback circuit is composed of a resistor and an operational amplifier, and is used to convert the temperature of the regulated device into an actual voltage.

[0052] In specific application scenarios, such as Figure 2 As shown, one end of the actuator's resistor R16 is connected to the output of the regulating circuit, and the other end of the resistor R16 is connected to the base B of the actuator's first transistor Q1; the collector C of the first transistor is connected to one end of the actuator's heating resistor, and the other end of the heating resistor is connected to the power supply; the emitter E of the first transistor is grounded; one end of the feedback circuit's resistor R20 is connected to the other end of the heating resistor, and the other end of the resistor R20 is connected to one end of the feedback circuit's resistor R21. Resistor R20 includes a thermistor, and at this time, one end of resistor R20 is also connected to the power supply; the other end of resistor R21 is connected to the emitter E of the first transistor; the non-inverting input of the sixth operational amplifier U6 of the feedback circuit is connected to the other end of resistor R20, and at this time, the non-inverting input of the sixth operational amplifier is also connected to one end of resistor R21. The inverting input and output of the sixth operational amplifier are both connected to the input of the subtractor, that is, the inverting input and output of the sixth operational amplifier are both connected to one end of resistor R3. The temperature control device at this time is suitable for low-power constant temperature control scenarios, such as constant temperature control of vehicle rearview mirrors, so that the temperature of the rearview mirror lens will not be too high and cause material deformation. This allows the hardware positional PID control algorithm to adjust the temperature regulation parameters more effectively to achieve lower energy consumption and avoid the heating wire being in a state of constant heating for a long time, which could lead to excessive temperature and damage to the heating resistor wire.

[0053] In a specific application scenario, if the temperature control device is applied to a medium-high power constant temperature control scene, a power amplifier needs to be used, such as Figure 3 , that is, the temperature control device further comprises a power amplifier connected between the adjusting circuit and the actuator.

[0054] One end of the resistor R23 of the power amplifier is connected with the power supply, and the other end of the resistor R23 is connected with the anode of the diode D1 of the power amplifier; the cathode of the diode is connected with the output end of the adjusting circuit; the collector C of the second triode Q2 of the power amplifier is connected with one end of the resistor R23, at this time, the collector C of the second triode is also connected with the power supply, the base B of the second triode is connected with the other end of the resistor R23, and the emitter E of the second triode is connected with one end of the resistor R16.

[0055] In order to facilitate understanding of the working principle of the temperature control device, it is assumed that the power supply connected with each device is 12V, the resistance value of the resistor Rn is represented as Rn, and the working process of the temperature control device without the power amplifier is as shown in Figure 4 , the working process of the temperature control device with the power amplifier is as shown in Figure 5 , ess represents the error between the actual voltage and the set voltage, Vset obtained by dividing the series resistors R1 and R2, is used for simulating the set value; R3=R4 in the subtracter to realize the equal proportion subtracter, according to the power supply superposition principle, Vess=Vset-Vfb; the output voltage of the in-phase proportional amplification circuit is ; the output voltage of the in-phase integral amplification circuit is , that is, Vess=0 when the actual temperature value is equal to the set temperature value, but due to the existence of integral, V ki is not 0, and the function of maintaining the output to realize the steady-state error is realized by using the characteristic; the output voltage of the differential amplification circuit is , that is, when the actual temperature value obtained by sampling is not equal to the set temperature value, such as Vess>0, V kd <0, at this time, the voltage output to the triode through the in-phase addition circuit will be reduced to achieve lead control and reduce overshoot, and vice versa; the output voltage of the in-phase addition circuit can be calculated by using the power supply superposition principle as , wherein R 13 =R 14 =R 15 , and R 12 =2R 11 , that is, the in-phase equal proportion amplification circuit can be obtained, and the output voltage thereof is Vsum=V kp +V ki +V kd; the role of D1 in the power amplifier is to increase the on voltage drop of Q2 base by VD1 about 0.7V (typical value) and so on, that is, Vsum+0.7V acts on the base, the on voltage drop of the emitter junction of the transistor Q2 is also about 0.7V (typical value) and so on, and then the on voltage drop of the transistor is offset, so that the voltage output to the actuator is Vsum; the heating resistor in the actuator is embedded in the vehicle-mounted rearview mirror as a heating source, wherein the constant current control is realized by the transistor Q1 and R16, that is, Q1 is in the amplification zone during the adjustment process when ess is small, and in the saturation zone during the adjustment process when ess is large, and the function of the constant current amplification multiple and the resistance heating coefficient is simplified as h, then T=h*Vsum; R20 in the feedback circuit is an NTC resistor, which reflects the temperature required to be controlled in the vehicle-mounted rearview mirror and the like on the resistance value, and R21 is a fixed resistor, which obtains a voltage function after being connected in series with R20 , R20 is a function of the resistance with respect to temperature , a is the temperature coefficient, and T is the ambient temperature, so the voltage function can be expressed as , that is, the driving ability is weak after voltage division, so an operational amplifier U6 is used to form a voltage follower to improve the driving ability.

[0056] Correspondingly, taking the temperature adjustment process of the vehicle-mounted rearview mirror as an example, the temperature control process can be as shown in Figure 6

[0057] After the temperature control device is powered on, the subtracter performs operation subtraction on the set temperature analog voltage Vset and the sampled temperature feedback voltage Vfb to obtain Vess, if Vset=Vfb at this time, it proves that the set temperature is equal to the feedback temperature, Vess=0, that is, the temperature control device is in a steady state, Vsum is unchanged, the rearview mirror heating resistor driving current is unchanged, the temperature sampling resistor resistance is unchanged, the temperature feedback voltage Vfb is unchanged, and the temperature control device is kept stable;

[0058] If the external environment changes and the external temperature decreases, the temperature of the rearview mirror decreases synchronously, the temperature sampling resistor resistance becomes larger, and the temperature feedback voltage Vfb becomes smaller, the subtracter performs operation subtraction on the set temperature analog voltage Vset and the sampled temperature feedback voltage Vfb to obtain Vess, if Vset>Vfb at this time, it proves that the set temperature is greater than the feedback temperature, Vess>0, that is, the temperature control device needs to be adjusted to heat the rearview mirror, since Vess>0, Vsum will increase, the rearview mirror heating resistor driving current will increase, the temperature of the rearview mirror will increase, the temperature sampling resistor resistance will become smaller, and the temperature feedback voltage Vfb will increase, at this time, Vfb gradually approaches Vset, the system gradually tends to be stable, and then a regulation cycle is completed;

[0059] ​If the outside temperature rises due to the change of the outside environment, the temperature of the rearview mirror rises synchronously, the resistance of the temperature sampling resistor becomes smaller, the temperature feedback voltage Vfb becomes larger, the subtracter performs the operation subtraction on the set temperature analog voltage Vset and the sampled temperature feedback voltage Vfb to obtain Vess, if VsetVfb at this time, VsetVfb proves that the set temperature is smaller than the feedback temperature, Vess<0, that is, the temperature control device needs to adjust to cool the rearview mirror, since Vess<0, Vsum will be reduced, the driving current of the rearview mirror heating resistor is reduced, the temperature of the rearview mirror is reduced, the resistance of the temperature sampling resistor becomes larger, the temperature feedback voltage Vfb is reduced, at this time, Vfb gradually approaches Vset, the system gradually tends to be stable, and then a regulation cycle is completed.

[0060] It is also necessary to note that the relational terms herein, such as first and second, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0061] The above description of disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A regulating circuit, characterized by The application relates to a voltage compensation circuit, which comprises a setting terminal, a subtractor connected with the setting terminal, a same-phase proportional amplification circuit, a same-phase integral amplification circuit and a differential amplification circuit connected with the subtractor respectively, and a same-phase addition circuit connected with the same-phase proportional amplification circuit, the same-phase integral amplification circuit and the differential amplification circuit respectively. The setting terminal is composed of resistors, which are used for converting a setting value into a setting voltage. The subtractor is composed of resistors and operational amplifiers, which are used for outputting a voltage difference value between an actual voltage and the setting voltage, wherein the actual voltage comprises a voltage conversion result of an actual value. The same-phase proportional amplification circuit is composed of resistors and operational amplifiers, which are used for outputting a first compensation voltage for the voltage difference value. The same-phase integral amplification circuit is composed of resistors, capacitors and operational amplifiers, which are used for outputting a second compensation voltage for the voltage difference value. The differential amplification circuit is composed of resistors, capacitors and operational amplifiers, which are used for outputting a third compensation voltage for the voltage difference value. The same-phase addition circuit is composed of resistors and operational amplifiers, which are used for outputting a target compensation voltage corresponding to the first compensation voltage, the second compensation voltage and the third compensation voltage, so as to adjust the actual voltage based on the target compensation voltage.

2. The regulation circuit of claim 1, wherein, One end of a resistor R1 of the setting terminal is connected with a power supply, and the other end of the resistor R1 is connected with one end of a resistor R2 of the setting terminal, and the other end of the resistor R2 is grounded.

3. The regulation circuit of claim 2, wherein, One end of a resistor R3 of the subtractor is connected with the actual voltage, and the other end of the resistor R3 is connected with one end of a resistor R4 of the subtractor; an inverting input end of a first operational amplifier of the subtractor is connected with the other end of the resistor R3, and a same-phase input end of the first operational amplifier is connected with the other end of the resistor R1.

4. The regulation circuit of claim 3, wherein, One end of a resistor R7 of the same-phase proportional amplification circuit is connected with the other end of the resistor R4 and an output end of the first operational amplifier respectively, and the other end of the resistor R7 is connected with a same-phase input end of a second operational amplifier of the same-phase proportional amplification circuit; one end of a resistor R6 of the same-phase proportional amplification circuit is grounded, and the other end of the resistor R6 is connected with one end of a resistor R8 of the same-phase proportional amplification circuit and an inverting input end of the second operational amplifier.

5. The regulation circuit of claim 4, wherein, One end of a resistor R5 of the same-phase integral amplification circuit is connected with the other end of the resistor R4 and the output end of the first operational amplifier respectively, and the other end of the resistor R5 is connected with a same-phase input end of a third operational amplifier of the same-phase integral amplification circuit; one end of a resistor R9 of the same-phase integral amplification circuit is grounded, and the other end of the resistor R9 is connected with one end of a first capacitor of the same-phase integral amplification circuit and an inverting input end of the third operational amplifier.

6. The regulation circuit of claim 5, wherein, One end of a second capacitor of the differential amplification circuit is connected with the other end of the resistor R4 and the output end of the first operational amplifier respectively, the other end of the second capacitor is connected with the inverting input end of the fourth operational amplifier of the differential amplification circuit, and the other end of the second capacitor is connected with one end of a resistor R10 of the differential amplification circuit; one end of a resistor R22 of the differential amplification circuit is grounded, and the other end of the resistor R22 is connected with the non-inverting input end of the fourth operational amplifier.

7. The regulation circuit of claim 6, wherein, One end of a resistor R13 of the same-phase addition circuit is connected with the other end of the resistor R8 and the output end of the second operational amplifier respectively, and the other end of the resistor R13 is connected with the non-inverting input end of a fifth operational amplifier of the same-phase addition circuit; one end of a resistor R14 of the same-phase addition circuit is connected with the other end of the first capacitor and the output end of the third operational amplifier respectively, and the other end of the resistor R14 is connected with the non-inverting input end of the fifth operational amplifier; one end of a resistor R15 of the same-phase addition circuit is connected with the other end of the resistor R10 and the output end of the fourth operational amplifier respectively, and the other end of the resistor R15 is connected with the non-inverting input end of the fifth operational amplifier; one end of a resistor R11 of the same-phase addition circuit is grounded, the other end of the resistor R11 is connected with the inverting input end of the fifth operational amplifier, and the other end of the resistor R11 is connected with one end of a resistor R12 of the same-phase addition circuit; the output end of the same-phase addition circuit comprises the other end of the resistor R12 and the output end of the fifth operational amplifier.

8. A temperature control device, characterized by The adjusting circuit comprises an actuator connected with the output end of the adjusting circuit, and a feedback circuit connected with the actuator and the input end of the adjusting circuit respectively; The actuator is composed of a resistor and a transistor, and is used for temperature adjustment of the adjusted device according to the target compensation voltage; The feedback circuit is composed of a resistor and an operational amplifier, and is used for converting the temperature of the adjusted device into an actual voltage.

9. The temperature control device of claim 8, wherein, One end of a resistor R16 of the actuator is connected with the output end of the adjusting circuit, and the other end of the resistor R16 is connected with the base B of a first transistor of the actuator; the collector C of the first transistor is connected with one end of a heating resistor of the actuator, and the other end of the heating resistor is connected with a power supply; the emitter E of the first transistor is grounded; One end of a resistor R20 of the feedback circuit is connected with the other end of the heating resistor, the other end of the resistor R20 is connected with one end of a resistor R21 of the feedback circuit, and the resistor R20 comprises a thermistor; the other end of the resistor R21 is connected with the emitter E of the first transistor; the non-inverting input end of a sixth operational amplifier of the actuator is connected with the other end of the resistor R20, and the inverting input end of the sixth operational amplifier and the output end of the sixth operational amplifier are connected with the input end of a subtractor.

10. The temperature control device of claim 9, wherein, A power amplifier connected between the adjusting circuit and the actuator is further included. One end of a resistor R16 of the actuator is connected with the output end of the adjusting circuit, and the other end of the resistor R16 is connected with the base B of a first transistor of the actuator; the collector C of the first transistor is connected with one end of a heating resistor of the actuator, and the other end of the heating resistor is connected with a power supply; the emitter E of the first transistor is grounded; One end of a resistor R20 of the feedback circuit is connected with the other end of the heating resistor, the other end of the resistor R20 is connected with one end of a resistor R21 of the feedback circuit, and the resistor R20 comprises a thermistor; the other end of the resistor R21 is connected with the emitter E of the first transistor; the non-inverting input end of a sixth operational amplifier of the actuator is connected with the other end of the resistor R20, and the inverting input end of the sixth operational amplifier and the output end of the sixth operational amplifier are connected with the input end of a subtractor. A power amplifier connected between the adjusting circuit and the actuator is further included. One end of the resistance R23 of the power amplifier is connected with the power supply, the other end of the resistance R23 is connected with the positive pole of the diode of the power amplifier; the negative pole of the diode is connected with the output end of the adjusting circuit; the collector C of the second triode of the power amplifier is connected with one end of the resistance R23, the base B of the second triode is connected with the other end of the resistance R23, and the emitter E of the second triode is connected with one end of the resistance R16.

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