36results about How to "Avoid temperature overshoot" patented technology

The invention relates to a liquid cooling temperature thermostatic bath system and an intelligent temperature control method thereof, comprising a cooling water tank and a cooling liquid, a liquid bath and a working liquid, and an intelligent temperature controller. The cooling water tank is provided with a water tank temperature sensor and a refrigerator, an electrical heater connected with an electrical heating executor, and a water cooler, a stirrer, a liquid bath temperature sensor, and a water inlet pipe and a water outlet pipe of the water cooler that are connected with the cooling water tank; the other end of the water inlet pipe is connected with a cooling water pump, a signal input end of the intelligent temperature controller is respectively connected with the temperature sensor of the cooling water tank and the temperature sensor of the liquid bath, while the output end is respectively connected with the electrical heating executor, a stirrer engine, the cooling water pump and the refrigerator. The system and the method can drop the temperature at a speed higher than the natural cooling by near 20 times through forced liquid cooling, and can effectively avoid the over regulating of temperature and reduce the negative impact of thermal inertia, thus greatly shortening the precision temperature controlling process and cutting down power consumption.

A fuser apparatus including: a fuser member having an endless contact surface to be brought into contact with each of successively transported recording media and a non-contact surface and being arranged to apply heat to the recording medium from the contact surface to fix a toner on the recording medium; a heating member energized to supply heat to the contact surface; a contact surface temperature detecting member for detecting a temperature of the contact surface; a non-contact surface temperature detecting member for detecting a temperature of the non-contact surface; and an energization controlling member for controling energization power of the heating member; wherein the energization controlling member controls the heating member energization power so that the heating member energization power is reduced as a difference between the non-contact surface temperature and the contact surface temperature decreases.

The invention discloses a radio-frequency ablation instrument and a multi-pole ablation device with the same. The radio-frequency ablation instrument is capable of judging ablation effectiveness according to one or more conditions of an impedance decrease value, an impedance change rate, impedance change rate changes or impedance change from decreasing to increasing. By adoption of a sectional control method and dynamic smoothing for regulating radio-frequency output power, ablation temperature is controlled, quick temperature rise of ablation tissues is avoided, and radio-frequency output power smooth changes in an ablation process is guaranteed. The radio-frequency ablation instrument is further provided with a special protection mechanism for preventing repeated ablation, the temperature of a to-be-ablated part is detected in each-time ablation application, and ablation is not started if the temperature of a to-be-ablated part is higher than 40-60 DEG C. The radio-frequency ablationinstrument and the multi-pole ablation device with the same can be used for sending direct current, alternating current and radio-frequency energy to lesions and used for treatment of lung diseases.

The invention discloses a temperature control method of a CO2 incubator. The temperature control method comprises the following steps that: a temperature control deviation value er is calculated according to a set temperature st and a real-time temperature t in the CO2 incubator; and the output power of a heating element is controlled by adopting the CO2 incubator temperature control method, and the temperature t in the CO2 incubator is controlled within an accurate range. According to the method, temperature overshoot is effectively avoided, the stability and uniformity of the box temperatureare effectively controlled, it is guaranteed that different cells can be cultured under different environment conditions, the control error of the CO2 incubator can be kept smaller than or equal to + / -0.2 DEG C in the environment of 15-35 DEG C and at the set temperature of 30-50 DEG C, and when the set value is 37 DEG C and the environment temperature is 23 DEG C, the control precision can be ensured to be less than or equal to + / -0.1 DEG C.

The invention discloses a fuel cell cooling liquid temperature control method and system and a controller thereof, and the temperature control method comprises the steps: collecting the real-time temperature value and other data of a fuel cell stack cooling liquid outlet, and searching the target value temperature of the cooling liquid outlet, a temperature difference set value and the number of initial fans according to a scheduling current; whether the difference between the cooling liquid outlet target temperature value and the real-time temperature value is smaller than a temperature difference set value or not is judged, if yes, a fan control strategy is started, the fan duty ratio is calculated, then whether the fan duty ratio is larger than or equal to the minimum set duty ratio and smaller than or equal to the maximum set duty ratio or not is judged, and if yes, the fan duty ratio is directly output to control the fan rotating speed; if the duty ratio is smaller than the minimum set duty ratio, the number of fans is reduced, and the fan duty ratio is calculated for controlling the fan rotating speed; and if the duty ratio is larger than the maximum set duty ratio, the number of the fans is increased, and the fan duty ratio is calculated for controlling the fan rotating speed by considering the fan starting delay. The invention can meet the requirements of fuel cell efficiency and service life.

The invention relates to the technical field of thermal stability detection and discloses a quick thermal stability detector which comprises a test terminal and a heating control system, wherein the test terminal comprises a core made of refractory material, a heating element is arranged in the core; the heating control system comprises a sensor, a temperature controller and a relay; and the input end of the temperature controller is connected with the sensor, the output end of the temperature controller is connected with the relay, the relay is connected with the heating element to realize heating, and the sensor is arranged close to a sample to be detected. The detector can quickly and efficiently detect thermal stability with simple and convenient operation.

The invention relates to novel tumor heat treatment equipment. The equipment comprises a temperature controlling hot resistance heating device which is arranged in the internal center of a tumor, heats the tumor in a hot resistance heating manner and accurately controls the heating temperature of the temperature controlling hot resistance heating device, a temperature measuring device which is arranged in the intersection area of tumor tissues and normal tissues and performs constant temperature measuring in real time, and a controller which is connected with the temperature controlling hot resistance heating device to control the heating temperature of the temperature controlling hot resistance heating device and is connected with the temperature measuring device to adjust the heating temperature of the temperature controlling hot resistance heating device according to the result of whether or not the measuring value of the temperature measuring device meets a needed temperature value. According to the equipment, the temperature controlling hot resistance heating device is used for heating the tumor tissues in the center of the tumor and measuring temperature at the intersection area of the tumor tissues and the normal tissues, and therefore the temperature distribution situation of the whole tumor tissues can be reflected by combining the heating temperature of the temperature controlling hot resistance heating device and the measured temperature of the temperature measuring device to achieve complete inactivation of the tumor tissues.

The invention relates to an energy-saving temperature controlling heating stage and a constant temperature controlling method of the energy-saving temperature controlling heating stage. The energy-saving temperature controlling heating stage and the constant temperature controlling method of the energy-saving temperature controlling heating stage solve the problems that a conventional temperature controlling box is slow in temperature increase and temperature of a conventional electric heating plate can not be stably controlled. The energy-saving temperature controlling heating stage comprises a thermal insulation box cover, a heating cavity and an electric control operation box, wherein the thermal insulation box cover, the heating cavity and the electric control operation box are sequentially connected from top to bottom. A heating device and a soaking plate are arranged in the heating cavity. The upper surface of the heating device is tightly connected with the lower surface of the soaking plate. Heat insulating and preserving materials are filled in a cavity of the lower surface of the heating device. An automatic sealed ring controlling regulator, a heating switch, a power supply switch and a fuse cutout are arranged on the electric control operation box.

The invention provides a Diesel particulate filter (DPF) segmented regeneration method which comprises the following steps of when an active regeneration condition is met, entering a regeneration control stage I; judging whether the end condition of the regeneration control stage I is met or not, and entering a regeneration control stage II if the end condition of the regeneration control stage I is met; judging whether a regeneration ending condition is met or not; and if the regeneration ending condition is met, quitting regeneration, and completing the regeneration control. According to the method, the temperature of the DPF during active regeneration can be simply and accurately controlled, carbon in the DPF can be efficiently combusted, the phenomenon of temperature overshoot of the DPF in the active regeneration temperature control process is effectively avoided, balance between the safety of the DPF and the regeneration efficiency of the DPF is achieved, and the method is suitable for large-scale application.

The invention relates to cooking equipment and a temperature control method thereof. The method comprises the following steps: determining a preset cooking temperature; if the preset cooking temperature is larger than the first temperature and not larger than the second temperature, a heating pipe is turned on, and when it is determined that the cavity temperature reaches the preheating temperature, the heating pipe is turned off, and an evaporator is turned on; when the evaporator reaches the evaporation temperature, the evaporator is controlled to conduct cooking preheating, so that the temperature of the cavity is increased to the cooking temperature; controlling the evaporator and the heating pipe to be switched on and off simultaneously through proportional-integral-derivative so as to keep the temperature of the cavity at the cooking temperature; if the preset cooking temperature is not smaller than the third temperature and not larger than the first temperature, the evaporator is started, and when the evaporator reaches the evaporation temperature, the evaporator and the heating pipe are controlled to be switched on and off at the same time through proportional-integral-derivative, so that the temperature of the cavity is increased and kept to the cooking temperature. According to the embodiment of the invention, the actual temperature in the cooking equipment is the cooking temperature by improving the temperature control capability.

The invention relates to a soldering iron core, in particular to a high-power-density soldering iron. The soldering iron comprises a soldering iron head, wherein the tail of the soldering iron head isarranged at the end of an outer steel pipe; the soldering iron core is arranged in the outer steel pipe; a temperature measurement discharge hole is formed in the rear end of the soldering iron head;a temperature sensor and a ceramic tube are arranged in the temperature measurement discharge hole; a discharge needle is arranged in the ceramic tube; and the head of the discharge needle is inserted into the temperature measurement discharge hole through the center of the ceramic tube. The high-power-density soldering iron has the characteristics of high heating efficiency, compact structure, excellent temperature stability and the like.

The invention discloses a server fan control method and system based on component power consumption. The method comprises the steps that according to the power consumption value of a current samplingmoment and the power consumption value of a previous sampling moment of a to-be-cooled part in a server, a power consumption deviation of the to-be-cooled part is calculated; whether the power consumption deviation is larger than or equal to 10% or not is judged; if yes, the rotating speed of a fan of the server is controlled according to the power consumption deviation; and if not, the rotating speed of the fan of the server is controlled by utilizing a PID control method according to the temperature of the to-be-cooled part. The system mainly comprises a power consumption deviation calculation module, a judgment module, a power consumption control module and a PID control module. By means of the method and the device, the phenomena of rotating speed overshoot of the fan and temperature overshoot of the components can be avoided, the control stability of the rotating speed of the fan is improved, the noise generated by the server is lowered, and the user experience is improved.

A thermal compression bonding power source comprises a main circuit, a controller, a current sampling circuit, a voltage sampling circuit and a temperature detection circuit, wherein the main circuit outputs a direct current / a pulse current to a thermal compression bonding head, and the current sampling circuit, the voltage sampling circuit and the temperature detection circuit are respectively connected to the thermal compression bonding head. The main circuit adjusts the output current according to a PWM signal. The current sampling circuit collects the output current of the main circuit and obtains a feedback current value. The voltage sampling circuit collects voltages of two ends of the thermal compression bonding head and obtains a feedback voltage value. The temperature detection circuit detects the temperature of the welding position of the thermal compression bonding head and obtains a thermal electromotive force signal. The controller is used for controlling the temperature process of the thermal compression bonding head according to a preset temperature curve, obtaining a feedback temperature value according to the thermal electromotive force signal, and controlling a duty ratio of the PWM signal according to the feedback current value, the feedback voltage value and the feedback temperature value. According to the thermal compression bonding power source, identification for temperature sensing lag time is achieved, feed forward control over the temperature is conducted according to the lag time, the phenomenon of temperature overshooting caused by the temperature feedback lag is avoided, and stability of the temperature control is improved.

The invention discloses a control method for preventing temperature overshoot, which includes the following steps: S001: setting the preset temperature T0; S002: setting a counter, wherein, when the water quantity control switch is switched from a low position to a high position, the counter display The value is 0; when the water volume control switch is switched from the high position to the low position, the display value of the counter is greater than 0; S003: judge the display value of the counter; S004: set the target temperature according to the judgment result of step S003, such as the display value of the counter If it is 0, set the target temperature T=T0; if the display value of the counter is greater than 0, then set the target temperature T=T0-T1; S005: maintain the target temperature T=T0-T1 for a period of time and then return to the preset temperature T0. The invention also discloses a control system for preventing temperature overshoot. The temperature overshoot prevention control method or control system provided by the present invention ensures that the temperature overshoot phenomenon is avoided when gears are switched, and brings comfortable experience to users.

The invention provides a wafer temperature control system, a wafer temperature control method, and a reaction chamber. The wafer temperature control system includes a chuck for carrying a wafer, a heating device arranged in the chuck for heating the wafer, and a heating device for heating the wafer. The conveying device for conveying the heat exchange gas in the gap between the wafer and the chuck, the conveying device includes a conveying pipeline, and the conveying pipeline is used to convey the heat exchanging gas to the gap between the wafer and the chuck; There are temperature controllers for heating or cooling the heat exchange gas in the delivery line so that the heat exchange gas entering the gap between the wafer and the chuck reaches the target temperature. The wafer temperature control system provided by the invention can not only increase the temperature control speed of the wafer and increase the production capacity, but also can improve the accuracy of the wafer temperature control, thereby improving the uniformity of the process.

The invention provides a power control method and device. The method comprises the steps of: acquiring an actual measurement temperature of a controlled target; comparing the actual measurement temperature and a rated temperature, and, in response to the increase of the actual measurement temperature from a value lower than the rated temperature to a value higher than the rated temperature or thereduction of the actual measurement temperature from a value higher than the rated temperature to a value lower than the rated temperature, resetting an accumulative temperature error value acquired by accumulating temperature error values, wherein the temperature error values are the difference values between the rated temperature and the actual measurement temperature; based on the temperature error values and the accumulative temperature error value at the current moment, determining the input power upper limit value of the controlled target; controlling power provided for the controlled target based on the input power upper limit value. According to the technical solution, the temperature of a controlled target can be stabilized around a rated temperature faster, so that the performance of the controlled target can be maximized while the controlled target is protected.

The invention relates to an energy-saving temperature controlling heating stage and a constant temperature controlling method of the energy-saving temperature controlling heating stage. The energy-saving temperature controlling heating stage and the constant temperature controlling method of the energy-saving temperature controlling heating stage solve the problems that a conventional temperature controlling box is slow in temperature increase and temperature of a conventional electric heating plate can not be stably controlled. The energy-saving temperature controlling heating stage comprises a thermal insulation box cover, a heating cavity and an electric control operation box, wherein the thermal insulation box cover, the heating cavity and the electric control operation box are sequentially connected from top to bottom. A heating device and a soaking plate are arranged in the heating cavity. The upper surface of the heating device is tightly connected with the lower surface of the soaking plate. Heat insulating and preserving materials are filled in a cavity of the lower surface of the heating device. An automatic sealed ring controlling regulator, a heating switch, a power supply switch and a fuse cutout are arranged on the electric control operation box.

The invention discloses a CO 2 The temperature control method of the incubator, including: according to the set temperature st and CO 2 The real-time temperature t inside the incubator is used to calculate the temperature control deviation value er; 2 The incubator temperature control method controls the output power of the heating element, controls the CO 2 The temperature t in the incubator is within the precise range. This method effectively avoids temperature overshoot, effectively controls the stability and uniformity of the box temperature, and ensures that different cells can be cultivated under different environmental conditions, making CO 2 When the incubator is in the environment of 15-35°C and the set temperature is 30-50°C, the control error can be kept at ≤±0.2°C. When the set value is 37°C and the ambient temperature is 23°C, the control accuracy can be guaranteed At ≤±0.1°C.