34results about How to "Simple program structure" patented technology

The invention discloses an electronic parking braking method. The method comprises the following steps of: first, parking braking, namely transferring prestored air pressure in an air reservoir to brake chambers of each wheel by controlling an active air supply electromagnetic valve to realize the parking braking; and second, releasing braking, namely when a road section is a straight road surface, simultaneously releasing a drive wheel and a driven wheel of a controlled vehicle once; and when the road section is a downhill road section or an uphill road section, adopting a corresponding control strategy according to the rotating situations of each wheel of the vehicle, and releasing the air pressure in the brake chambers of each wheel of the controlled vehicle separately by utilizing a pressure maintaining effect of an antilock brake system (ABS) electromagnetic regulating valve. The electronic parking braking method has a reasonable design, low investment cost, high intelligence degree and good use effect, is convenient to operate, and solves the practical problems of high technical requirements on drivers, brake force transfer gap of mechanical system, great difficulties in starting operation on low-adhesion coefficient road surface and ramp, poor use effect and the like in a conventional mechanical parking braking system.

The invention relates to a PWM overmodulation method based on an optimized quasi sine flat modulating wave. The method is characterized in that firstly, one quasi sine flat wave is established to serve as the modulating wave, a triangular carrier wave is modulated, and then a three-phase PWM overmodulation algorithm is adopted for overmodulation. According to the method, three-phase PWM is generated by adopting the triangular carrier wave, the largest output linear voltage fundamental wave amplitude value of the three-phase PWM in a linear area is 19% higher than that of SPWM, and therefore the direct-current voltage use ratio is remarkably improved.

The invention relates to the technical field of an industrial control system and particularly relates to a control program organization structure of the control system and a download method. The control system comprises a controller and configuration software, wherein the controller is internally provided with an operation management core in a solidification mode, a background system of the configuration software is stored with a program module database, the program module database is stored in the configuration software in an encrypted linkable file mode, the foreground of the configuration software realizes programming and download of user configuration programs carried out by users, the operation management core, the program module database, the user configuration programs and data sets form a control program, and communication and interaction of the control program between the controller and the configuration software is carried out through a download interface. The control system is advantaged in that the control program module database is stored in the background of the configuration software, control program modules actually utilized by the configuration program are downloaded to store in the controller only after download, not only can the program structure of the controller is simplified, program scheduling and management are made to realize more rapid and reliable, but also storage resource pressure of the controller is further reduced.

The invention relates to an adaptive measurement and control system for a charge-discharge process of an integrated storage battery, in particular relates to an adaptive measurement and control system for a charge-discharge process of an integrated storage battery by dynamically regulating and controlling a power supply adapter and load power to work in a corresponding optimization condition so that an application embodiment has perfect safety and protective function. The power supply adapter and the load power are dynamically regulated and controlled to work in adaptive charge and discharge mode with an automatic optimization condition through a measurement and control module, the practicable service life of the storage battery can be doubled prolonged, and rapid charge can be achieved. The system is widely applicable for application scenes such as an illuminating system, a standby power supply system, a dynamic power supply system, a ships and warships power supply system, an automobile power supply system, a solar energy storing and supplying system, a mobile power supply system and the like.

The invention discloses an intelligent data acquisition device with a solidified protocol. The device comprises a main processor for converting the control power of a bus. The main processor is respectively connected with a memory chip, a meter protocol card for collecting and analyzing data after receiving the control power of the bus and at least one communication interface circuit. Due to the fact that the meter protocol card instead of the processor is employed to collect and analyze data, the communication protocol provided by the invention is matched with the communication protocol of an intelligent instrument by changing the meter protocol card to carry out data collection and analysis on the intelligent instrument. In addition, the meter protocol card is employed to collect and analyze data, so that the process of data collection and analysis is independent from the main processor, the program structure of the main processor is simplified, the burden of the main processor is reduced, debug is more easily to be carried out, and the stability and the reliability is greatly enhanced. The intelligent data acquisition device with the solidified protocol provided by the invention is widely applied in a centralized meter reading system.

The invention discloses a download management method, a download management unit and a download system, wherein the download management method includes the following steps: the download management unit receives a file download request assigned by a file application program, the file download request carries a Uniform Resource Locator corresponding to a file requested to download by the file application program and the Uniform Resource Locator includes a Protocol ID; according to the Protocol ID included in the Uniform Resource Locator, a protocol processing unit corresponding to the Protocol ID is called to download the file; and after the file downloaded by the protocol processing unit is received, the file is forwarded to the file application program. The technical proposal provided by the embodiment is conducive to simplifying the structure of the file application program, improves the system expandability, and relatively lowers the complexity of code maintenance.

The invention discloses a method for solving too many branch statements in software, which comprises: the step of establishing a dynamic library; the step of establishing a function pointer; and the step of pointing the function pointer to the dynamic library. The invention combines the dynamic library and function pointer data to solve the problem of many branch statements in the above software engineering, to simplify the software structure, improve the software design efficiency, and improve the readability, maintainability and expandability of the software.

The invention discloses an intelligent detection system and method for abnormity of an automatic sensor, in an automatic logistics control process, for an application scene of control process information tracking, a sensor detection signal is combined with controller program logic by utilizing a controller program scanning characteristic, a special program module algorithm is compiled in a controller, according to dynamic characteristics such as conveying equipment with different lengths and accelerations, through dynamic counting, self-learning detection control and self-adaptive dynamic fault triggering, tracking errors are prevented, alarm diagnosis is accurately completed, and fault types are accurately identified, so that the fault processing time is saved, and the response speed of fault processing is improved.

The invention provides an automatic nozzle and submerged arc welding machine and a control system. One side of a horizontal movement unit is connected with a self-aligning mechanism, the other side ofthe horizontal movement unit is connected with a rotating support, a rotating system is installed on the lower part of the rotating support, a drag chain accessory is connected with the lower part ofthe rotating system, a welding wire disc, a mounting bracket of the welding wire disc and a remote operation control box are fixed on a bracket of the drag chain accessory, the front end of the dragchain accessory is connected with a perpendicular movement unit, and a wire feeding unit is installed at the lower end of the perpendicular movement unit. According to the automatic nozzle and submerged arc welding machine, the digitalization degree is improved, the operation difficulty is reduced, the self technical level requirements of a welder are reduced, the welding preparation time is shortened, the product manufacturing cycle is increased, the influence of human factors on the welding process is reduced, and the welding quality is ensured.

The invention relates to a material tracking data processing system and method in an iron and steel enterprise management and control system, and the system comprises a tracking management module, a data management module, a first data area which is used as a cache, and a second data area which is used for carrying out the persistent storage of data. The tracking management module receives material tracking data, the data management module is used for managing the first data area and the second data area, starting a data reading process as required, reading data from the first data area or the second data area, writing the data of the second data area into the first data area as required, and starting the data writing process as required, and writing the material tracking data received by the tracking management module into the second data area and deleting the data in the first data area as required. According to the invention, efficient reading and writing of the material tracking data in the iron and steel enterprise management and control system are ensured, and the data are not lost.

The invention belongs to the technical field of machining, and discloses a process for machining an oil groove part by using a macro program, which comprises the following steps: S1, fixing a shaft sleeve part to be machined; S2, confirming structure parameters of a oil groove to be machined; S3, selecting the type of a turning tool and the shape of a tool bit; S4, programming by utilizing the macro program; S5, starting a machine tool, thereby completing machining. The numerical control lathe solves the problem that an economical numerical control lathe in the prior art is not suitable for machining 8-shaped or double 8-shaped closed oil grooves, and is suitable for machining oil groove parts.

The invention discloses a data communication method and a method and a system thereof for measuring and controlling a dual redundancy motor. The data communication method comprises the following steps: 1. Setting a communication protocol; 2. Double-cycle parallel data receiving and processing. The double redundancy motor measurement and control method comprises the following steps: 1. Communication protocol setting; 2. Data acquisition and transmission; 3. Data receiving and processing; The dual redundancy motor measurement and control system comprises a DSP digital processor module and a power supply circuit module, a reset circuit connected with the DSP digital processor module, a storage expansion circuit and a RS422/RS485 communication circuit. The dual redundancy motor measurement andcontrol system comprises a DSP digital processor module and a power supply circuit module. The input terminal of DSP digital processor module is connected with current detection circuit, voltage detection circuit, temperature detection circuit and RVDT solution circuit. The invention can stably, safely and reliably realize the coordinated control between the dual-redundancy servo motors and the data communication between the upper computer LabVIEW and the lower computer DSP module, which is convenient for popularizing and using.

The invention discloses a modular tactile perception control device and method. The device comprises a tactile information acquisition module, a main controller module, a multi-path motor driving module, a plurality of motors and a plurality of mechanical transmission mechanisms. The tactile information acquisition module is used for acquiring contact force information and realizing the functionsof contact force detection and recognition. The main controller module is used for completing square wave control, current closed-loop control, speed closed-loop control, contact force impedance transformation closed-loop control, information feedback and operation of the information acquisition module, and control signal transmission of the information acquisition module. The multi-path motor driving module is used for receiving a motor control signal sent by the main controller module and directly performing motion control on the motor. According to the method, real-time contact force signals fed back by the tactile information acquisition module and given force signals are used for making deviations. After that, the speed closed-loop feedback control information is formed after impedance conversion. Meanwhile, the speed deviations and the speed closed-loop feedback control information are superposed, and then the speed closed-loop adjustment is carried out. Finally, force control can be accurately completed.