6results about How to "Improve adjustment quality" patented technology

The invention relates to a vehicle having an electric motor (EM) which drives a wheel (2) via a transmission mechanism, in which a parking lock (4) having a pawl (5) and a locking gear (7) is mounted, in a specific parking state, the engaged pawl (5) is clamped, and in which the engaged pawl (5) is unclamped for unstressed parking lock release. A central control unit (11) actuates a pulse inverter (PWR) of an electric machine (EM) in order to rotate a rotor shaft (1) of the electric machine by a target rotation angle (alphasoll) in a direction of rotation (D), in particular to generate a reduced-pressure torque (M), by means of which clamping acting on the parking lock (4) can be reduced. According to the invention, the pulse inverter (PWR) is connected together with the rotor position sensor (15) into the adjustment circuit (R). By means of the adjustment circuit (R), a rotational angle adjustment mode can be carried out, in which the electric machine (EM) is actuated by means of the reduced-pressure torque (M).

The invention discloses a spray needle switching and evaluation method for a six-spray six-fold large impulse turbine, belongs to the technical field of impulse turbines, and provides a spray needle switching mode and a control strategy, a one-dimensional non-constant flow model is adopted in a water diversion system, and a six-spray six-fold impulse turbine calculation model is constructed. Comprising a spray needle switching mode module, a spray needle callback control module, a power correction module, a power opening conversion function module, a power feedback module and the like, the unit power fluctuation characteristic in the spray needle switching process can be accurately simulated, the power fluctuation in the switching process is effectively reduced, the adjusting quality of a water turbine is improved, and guidance can be provided for design and operation of a power station.

The invention belongs to the technical field of primary frequency modulation of a thermal power generating unit, and particularly relates to a control method for improving the primary frequency modulation action qualification rate of the thermal power generating unit. Comprising the following steps: S1, converting a main transformer high-voltage side frequency signal collected by a frequency transmitter into a rotating speed signal after grid connection of a unit, and when the frequency signal participating in primary frequency modulation after grid connection of the unit fails, switching back to an original primary frequency modulation loop of the unit; s2, calculating the contribution rate of the primary frequency modulation of the unit; s3, constructing a unit primary frequency modulation contribution rate compensation logic; s4, constructing valve position factor compensation logic; and S5, constructing power factor compensation logic. When the thermal power generating unit carries out primary frequency modulation action, it is guaranteed that the control valve of the unit does not act violently, and it is also guaranteed that the theoretical action amount of primary frequency modulation meets related requirements.

This invention relates to the field of hydropower control technology, specifically a method and apparatus for optimizing the configuration of parameters in a hydropower unit speed control system. The method includes: constructing a hydropower unit speed control system model; obtaining guidance indicators for the configuration of various parameters of the hydropower unit speed control system model through curve analysis; and configuring the parameters of the hydropower unit speed control system based on these guidance indicators. This invention utilizes historical data to generate curves and uses curve analysis to obtain parameter configuration guidance indicators. The analysis process is simple, effectively reducing the professional requirements for personnel. Furthermore, it allows for continuous updating and correction using historical data, effectively improving the accuracy, rationality, and adaptability of the optimized configuration of hydropower unit speed control system parameters. This plays a significant role in the stable operation of the unit and improving regulation quality, providing technical support and assurance for the safe and stable transmission of hydropower energy.

The present invention provides a coordinated control system and method for a condensate system of a power plant based on feedforward compensation, wherein the first feedforward controller is constructed using the measured value of the condensate flow rate as a feedforward signal for hot well water level control; the second feedforward controller is constructed using the measured value of the condensate pressure as a decoupling control signal for deaerator water level control; and the third feedforward controller is constructed using the measured value of the deaerator water level as a decoupling control signal for condensate pressure control. The present invention solves the control problem of independent control of the three sub-loops and poor stability of the whole system in the traditional control scheme through the organic coordinated automatic control of the three control sub-loops of hot well water level, deaerator water level and condensate pressure in the condensate system, and realizes that the hot well water level, deaerator water level and condensate pressure control loops quickly reach a balance when the unit load changes rapidly and frequently, thereby enhancing the robustness of the whole condensate control system and meeting the full-condition operation control needs of the unit.

The utility model relates to the technical field of hardware parts, in particular to a hardware part surface flatness adjusting device which comprises a device body, a support is fixed to the top of the device body, a sliding plate capable of sliding in a lifting mode is arranged in the middle of the support, a connecting rod is fixed to the side wall of the sliding plate, and a first motor is fixed to the top of the connecting rod. The output end of the first motor is fixedly connected with a rotating roller, a grinding roller is fixed to the bottom of the rotating roller, a sliding block capable of horizontally sliding is arranged on the top of the device machine body, a mounting block is fixed to the top of the sliding block, a mounting base is mounted on the top of the mounting block, and a clamping rod is slidably connected into the mounting base. An adjusting mechanism is arranged at the end of the clamping rod, and a hardware part body is clamped in the middle of the clamping rod. According to the device for adjusting the surface flatness of the hardware parts, the hardware parts are clamped and fixed through the clamping rods, shaking and deviation are avoided, the hardware parts are automatically rubbed and flattened, and the working efficiency is improved.