37results about How to "Simple and reliable control" patented technology

The invention discloses a rotary, continuous and automatic feeding mechanism of a punching machine. The feeding mechanism comprises a frame, a loading mechanism, a taking mechanism, a punching machine and a main controller, and is characterized by further comprising a detecting disc and a blank detection positioning mechanism; the loading mechanism, the taking mechanism and the detecting disc are all fixed on the frame; the loading mechanism, the detecting disc and the punching machine are fixed around the taking mechanism at intervals in sequence in the clockwise direction; and the distances of the loading mechanism, the detecting disc and the punching machine from the taking mechanism are equal. The mechanism performs two times of positioning for blanks to be machined through a positioning block above the loading mechanism and a mold cover out of a mold so as to guarantee precise placement of the blanks in a machining position, and prevents the mold damage caused by once sucking of multiple blanks by the taking mechanism through the detecting number of the detecting disc. In addition, when the blanks are put in the mold, a photoelectric detector on the punching machine can detect if the blanks are placed precisely, so that such problems as mold damage and punching safety are further guaranteed.

A food pressure cooking utensil (1) comprises a bowl (2), a cover (5), and a buckle type locking system. The cooking utensil also comprises a safety element (12) including a main body (13) and a lock(16). The main body (13) is fixedly attached to the cover (5). The lock (16) is radially removable between an extension position and a retracted position relative to the main body (13). In the extension position, the lock (16) radially protrudes from the cover (5) and the main body (13). In the retracted position, the lock (16) retracts to the internal of the cover (5), so that when a locking system is in locking configuration, in one of the extension position and the retracted position, the lock (16) is connected with a complementary locking structure (17) supported by the bowl (2), and in the other one of the extension position and the retracted position, the lock (16) separates from the complementary locking structure (17).

The invention discloses a vertical force control method of a magnetic flux reverse permanent-magnet linear motor. The method comprises a vertical force optimal algorithm and a control switcher, wherein the vertical force optimal algorithm comprises the steps of establishing an auxiliary function to obtain optimal d and q axis current, and obtaining minimum copper loss and vertical force under the condition of keeping push force unchanged during steady-state operation, so that the working efficiency and performance of the motor are improved; the control switcher adopts a control mode that the d axis current is zero in a dynamic stage, and adopts a vertical force optimal control mode in a steady stage. The method is rapid in response and easy to carry out.

The invention relates to the technical field of motor driving, and discloses a control method for a direct current motor, which comprises the steps of determining a target rotating speed of the direct current motor; determining a target duty ratio corresponding to the target rotating speed according to a corresponding relation between the rotating speed of the direct current motor and the duty ratio of a pulse width modulation signal under the condition that the target rotating speed is greater than the maximum rotating speed of the direct current motor capable of being directly started; starting the direct current motor, enabling the rotating speed of the direct current motor to reach the maximum rotating speed capable of being directly started, and adjusting the duty ratio of the pulse width modulation signal in real time according to the corresponding relation between the duty ratio of the pulse width modulation signal and the working time of the direct current motor; and under the condition that the duty ratio of the obtained current pulse width modulation signal is adjusted to be equal to the target duty ratio, maintaining the current pulse width modulation signal so as to enable the rotating speed of the direct current motor to reach the target rotating speed.

The invention relates to a control machine capable of carrying an operation carrier to perform axial and circumferential motions relative to an operation matrix, which comprises an outer frame and an inner frame, wherein the outer frame is connected with an external bearing matrix and comprises a left box and a right box; a left box bolted box cover is provided with a convex keyslot and a guide rail opening; a right box bolted box cover is provided with a convex keyslot and a guide rail opening; one side wall of the left box and one side wall of the right box are respectively provided with a hydraulic cylinder; the inner frame comprises a left rotator, a right rotator and a guide rail connected between the left and right rotators; the left and right rotators are respectively provided with a convex key; the convex key of the left rotator is clamped in the left box and the convex keyslot of the left box cover; the convex key of the right rotator is clamped in the right box and the convex keyslot of the right box cover; the left rotator is connected with a hydraulic cylinder piston rod arranged on the side wall of the left box; and the right rotator is connected with a hydraulic cylinder piston rod arranged on the side wall of the right box. The control machine of the invention realizes the axial and circumferential motions of the operation carrier relative to the operation matrix, has the advantages of high bearing capacity, and convenient and quick assembly and disassembly, and provides a simple-control and reliable pipeline local operation platform for subwater pipeline unmanned connection.

The invention discloses a control method of alumina production. According to the method, a decentralised control system is used to carry out centralized control of the production process of each workshop. The decentralised control system comprises an information control center and central control rooms of each workshop. The information control center is provided with a host computer. Each central control room of the workshops is provided with a redundant data processor, a redundant data exchanger and a workshop monitoring terminal. The redundant data processor of each central control room of the workshops connects an annular fiber communication network through the redundant data exchanger of the central control room. The host computer comprises a plurality of monitors and a control terminal, and connects the annular fiber communication network through a network server. According to the method, the centralized control and centralized management of the data in the whole production process of alumina are realized, and safety production level and production efficiency are improved.

An appearance screening and cleaning integrated device for gears comprises a detection channel which is obliquely arranged, and a conveying chain structure which is vertically arranged. The detectionchannel is connected with a feeding port through a flexible piece, a tooth face detecting device is arranged at the bottom of the detection channel, end face detection devices are arranged on the twoside walls, and the detection channel is provided with a position changing drive device. The conveying chain structure comprises a circular movement chain, a set of chain wheels engaged with the chain, and a set of loading frames arranged on the chain, the chain wheels are connected with a chain wheel drive device, and the opening direction of the loading frames is consistent to the moving direction. The side, close to the detection channel, of the conveying chain structure is provided with a cleaning device, and a discharging channel is arranged at the upper end of the other side of the conveying chain structure. Tooth face and end face appearance detecting and screening and automatic qualified piece cleaning and unloading integrated actions are achieved, the integral structure is simple,the work efficiency is high, and the automation degree is high.

The present disclosure provides a split cooling apparatus for an internal combustion engine, the apparatus including: a base inserted into a water jacket of a cylinder block, the base surrounding an outside of a cylinder along a shape of the cylinder; an insertion groove formed on the base by being depressed into an inner surface of the base; and a sealing member inserted into the insertion groove, wherein when a temperature of cooling water supplied into the water jacket reaches a preset temperature or higher, the sealing member expands so as to close a flow passage between the base and the cylinder, thereby increasing flow resistance of the cooling water and thus reducing a heat transfer rate of the cylinder.

The invention discloses a cableway hydraulic driving system with speed adjusted by an energy accumulator. The cableway hydraulic driving system consists of an electric machine, a variable-capacity oil pump, a motor and a hydraulic driving system, wherein the electric machine is connected with the variable-capacity oil pump; high-pressure oil ports A and B of the variable-capacity oil pump are connected with oil ports A and B of the motor; a hydraulic speed adjusting system comprises the variable-capacity oil pump; a filling pump opening PS in the variable-capacity oil pump is connected with a filter; the filter is connected with a throttling orifice of a pressure limiting valve bank; the throttling orifice of the pressure limiting valve bank communicates with the pressure limiting valve bank and a port P of a solenoid directional valve respectively; an oil return port of the pressure limiting valve bank, a port T of the solenoid directional valve and a pilot control port X2 of the variable-capacity oil pump are connected with an oil tank T; a port B of the solenoid directional valve is connected with the energy accumulator and a pilot control port X1 of the variable-capacity oil pump respectively through throttling orifices of the solenoid directional valve; and an oil inlet T1 and an oil outlet T2 of the variable-capacity oil pump communicate with the oil tank T. The cableway hydraulic driving system has the beneficial effects that the system is simple to control and is stable and reliable; the number of control valve banks and matched electrical control are reduced, costs are saved, and fault rate is reduced; and safety protection is complete.

The invention relates to a grabbing device of stereoscopic parking equipment. The grabbing device of the stereoscopic parking equipment comprises a grabbing hook (71) and a guiding piece (72), wherein the grabbing hook (71) comprises an entrance sliding inclined plane (713), a clamping hole (715), a departure sliding inclined plane (714) and a limit pin (711); when the grabbing device (7) is lowered to height A2 from height A1, a lifting rod (22) of a car carrying board (21) enters into the clamping hole (715) from the entrance sliding inclined plane (713); and when the grabbing device (7) is lowered to height A3 from the height A2, the lifting rod (22) of the car carrying board (21) enters into the departure sliding inclined plane (714) from the clamping hole (715) and is finally separated.

The invention belongs to the technical field of medical technologies, relates to a full-automatic queuing box used for a medical examination, and aims at solving the technical problem by providing the full-automatic queuing box used for the medical examination. In order to solve the technical problem, the full-automatic queuing box used for the medical examination is provided, the full-automatic queuing box used for the medical examination comprises a box body, a box cover, a base, an upper-lower air cylinder, a left-right air cylinder, an L-shaped fork frame, a left-right pressure sensor, an upper-lower pressure sensor and a control system. In order to put a medical record note on the base accurately, a block bar is arranged on the base, the block bar is arranged on the upper portion of the right side of the base, and the block is located behind the L-shaped fork frame directly. According to the full-automatic queuing box used for the medical examination, the structure is simple, the maintenance and repair are convenient, and the production cost is low due to the fact that the number of parts is relatively few. The automation degree is high, and the automatic operation of the queuing box can be achieved.