32results about How to "High precision of automatic control" patented technology

The invention relates to an automatic driving device for an intelligent vehicle. The device comprises an automatic driving actuating mechanism and a control system, the automatic driving actuating mechanism comprises a steering actuating mechanism, a brake actuating mechanism, an accelerator actuating mechanism and a gear actuating mechanism, and the control system comprises a decoder, a serial communication unit, a single chip microcomputer, a CAN (controller area network) interface, a data storage unit, a reset circuit and a power conversion unit. By the aid of modular design, a steering module is directly and additionally mounted on a steering wheel through an upper steering wheel fixture and a lower steering wheel fixture in a synchronous belt transmission mode, the driving performance of an original vehicle cannot be affected as the original vehicle is slightly modified, the automatic driving device is applicable to various vehicle types with different steering wheel sizes, a brake module, an accelerator module and a gear module control states of a brake, an accelerator and gears as a direct current servo motor drives a ball screw to pull a flexible shaft, and manual driving cannot be affected. Four actuating modules are connected by a CAN bus, so that the automatic driving device is high in automatic control accuracy and fast in response.

The invention relates to the technical field of automatic control, in particular to an automatic coal gas station load control system. The control system comprises a high-pressure coal gas pressure control loop, a low-pressure coal gas pressure control loop and an amplitude limiter. After a low-pressure coal gas pressure set value and actual pressure data collected by a low-pressure coal gas pressure transmitter are subjected to comparison operation through a low-pressure coal gas pressure regulator, a signal is outputted to a blower frequency converter, a blower is controlled to regulate air volume to further control pressure of a low-pressure coal gas main, meanwhile the low-pressure coal gas pressure transmitter transmits measured low-pressure coal gas pressure information to the high-pressure coal gas pressure control loop through the amplitude limiter, pressure regulation of the high-pressure coal gas pressure control loop is subjected to amplitude limitation, the two control loops restrict each other during pressure regulation, safety in the whole control process is guaranteed, potential risk that the low-pressure coal gas pressure is ultrahigh and ultralow due to frequent change of coal gas demand of users is eliminated, and stable regulation of coal gas production is realized.

The invention relates to a steel wire heat treatment open-fire heating furnace with a column combined type preheater. The preheater is arranged in a smoke discharging flue and comprises a hot air tank and a cold air tank, which are communicated through a connecting vent pipe, and the hot air tank and the cold air tank are respectively partitioned into multiple chambers by partition boards. Each chamber of the hot air tank is respectively communicated with each chamber of the corresponding cold air tank through the connecting vent pipe, each chamber of the hot air tank is respectively providedwith a hot air pipe, and each hot air pipe is communicated to each section of the open-fire heating furnace. Each chamber of the cold air tank is respectively provided with a cold air pipe, each coldair pipe is communicated with a cold air header pipe, and a cold air valve is arranged on each cold air pipe. In the invention, the air quantity of each working section of the open-fire heating furnace is controlled by adjusting the air quantity entering each cold air pipe of the preheater, and the cold air valve works at normal temperature, is easy to realize automatic control and has high automatic control accuracy. The utilization rate of heat energy is high, the thermal stability of the furnace is good, and produced steel wires have good quality.

The invention relates to the technical field of self-adhesion aluminum-plastic composite foil, in particular to production equipment of self-adhesion aluminum-plastic composite foil. By means of the combination design of an adhesive coating unit, an extrusion melting unit and a tape-casting laminating unit, the problems that existing production equipment for self-adhesion aluminum-plastic composite foil is single in function, production of aluminum-plastic foil and self-adhesion films can not be controlled, consequently, the production cost is difficult to control, and produced self-adhesion aluminum-plastic composite foil is thick are solved.

A hand-held pan-tilt control method and a hand-held pan-tilt, the hand-held pan-tilt includes a handle and a pan-tilt arranged on the handle, the method includes: when the pan-tilt enters a motion state, acquiring the attitude of the handle; according to the attitude of the handle, determining The first included angle between the first axis direction and the vertical direction in the coordinate system of the handle and / or the second included angle between the second axis direction and the vertical direction in the handle's coordinate system; according to the first included angle and / or The second included angle determines the desired shooting mode of the pan-tilt, and the desired shooting mode includes one of the upper flashlight mode and the vertical mode; the control pan-tilt enters the desired shooting mode; wherein, when the handheld pan-tilt is placed upright, the first axis direction, the second axis direction and the vertical direction are orthogonal. The hand-held pan-tilt control method and the hand-held pan-tilt of the present invention realize the function of directly entering the upper flashlight mode or the vertical shooting mode when the pan-tilt enters the motion state, without additional operation by the user, and the pan-tilt is automatically controlled with high precision and high efficiency, and is more in line with User needs.

The invention belongs to the metal rolling field and discloses a post-rolling fast cooling system for on-line solution treatment of steel plates. According to the system, rolling heat left after the steel plates are rolled is utilized, a compact top and bottom inclined spraying type fast cooling device is installed between a heat straightening machine and a cooling table for conducting the on-line solution treatment on the steel plates, the steel plates are uniformly cooled, and the cooling process is accurately controlled in a full-automatic mode. The investment of the fast cooling system is small, the cooling device is compact and saves the energy, the cooling rate is high, the thickness specification range of the steel plates capable of undergoing controlled cooling is wide, the automatic control accuracy is high, the shapes of the plates after being cooled are good, and carbon emission and tremendous energy consumption caused by off-line heat treatment and secondary heating can be reduced. The system can be widely applied to the cooling process after the steel plates are rolled and the production control field.

The invention provides a steel plate production method, a device and a control system for steel plate on-line solution, and belongs to the technical field of metallurgy. According to the method, excess rolling heat after a steel plate is rolled is utilized to perform on-line solution treatment on the steel plate to obtain a specific steel plate microstructure and various properties in line with product requirements, so as to reduce carbon emission and lots of energy consumption during secondary heating of off-line heat treatment. The device for production and the control system are less in investment; and the cooling device is compact and high in cooling rate, can save energy, can cool steel plates with a wide thicknesses specification range in a controlled manner, is high in automatic control precision, makes a cooled steel plate good in shape, not only can be used in steel plate on-line solution treatment, but also can be applied to a process needing rapid cooling after rolling, even an off-line quenching process.

The invention relates to a plate shape control method for online solution treatment of steel plates and belongs to the technical field of metallurgy. The plate shape control method is used for solving the bottleneck problem that the shapes of steel plates are poor in the application of online solution treatment technology. An overall rolling type oblique spraying cooling device and a follow-up type upper compression roller system capable of blocking water are designed. A reverse steel throwing technique is adopted, a three-dimensional full flow control technology is applied, and the good plate shapes of the steel plates subjected to online solution treatment are ensured in the process of cooling after rolling. The plate shape control method can not only be used for online solution treatment of the steel plates but also be applied to the process needing quick cooling after rolling and even the off-line quenching process. The plate shape control method can be widely applied to the field of cooling processes and production control after the steel plates are rolled.

The invention provides a basic automatic rolled steel plate rapid cooling system for online solid solution treatment and belongs to the technical filed of metallurgy. The basic automatic rolled steel plate rapid cooling system comprises a basic automatic system body which is provided with a rapid cooling water treatment system and a hydraulic system and can be used for online solution treatment of steel of relevant types. According to the basic automatic rolled steel plate rapid cooling system, through the arrangement of the reasonable basic automatic system body provided with the water treatment system and the hydraulic system, full-automatic accurate control over the cooling process is achieved. According to the basic automatic rolled steel plate rapid cooling system for online solid solution treatment, the investment is small, a cooling device is compact and capable of saving energy, the cooling rate is high, the range of the thicknesses of steel plates which can be cooled in a controlled mode is wide, the automatic control precision is high, and the plate shape after cooling is good.

The invention discloses a direct current micro voltage / micro current detection device and a detection method thereof. The detection device comprises an oscillation circuit, a digital signal amplifying circuit, a subtractor and a numerical value scaling unit, wherein the oscillation circuit comprises a first voltage-controlled oscillator and a second voltage-controlled oscillator, the parameters of the first voltage-controlled oscillator and the second voltage-controlled oscillator are the same, the input of the first voltage-controlled oscillator is connected with the output end of a signal to be detected or is grounded, the input of the second voltage-controlled oscillator is grounded or is connected with the output end of the signal to be detected, the output of the first voltage-controlled oscillator and the output of the second voltage-controlled oscillator are respectively connected with the input of the digital signal amplifying circuit; the output of the digital signal amplifying circuit is connected with the input of the subtractor, and the output of the subtractor is connected with the input of the numerical value scaling unit. The method comprises the following steps: the detection device respectively converts an input signal into oscillation frequencies by the first voltage-controlled oscillator and the second voltage-controlled oscillator, and amplifying, subtracting and conversion are carried out, so as to judge whether a direct current micro voltage or direct current micro current is input or not.