17 results about "Multi unit" patented technology

A symmetrical multi-unit railroad freight car, such as a 3-pack railroad intermodal well car, has body units that are connected symmetrically. The body units have a symmetrical arrangement of end trucks and shared trucks. The end trucks are 70 Ton Trucks. The shared trucks are 125 Ton trucks. The trucks have passive steering using geometric rocker stiffnesses. The rockers in the end trucks have a smaller radius of curvature than the rockers in the shared trucks. The spring groups in the shared trucks are stiffer than the spring groups in the end trucks. The spring groups in the end trucks have a different proportion of damping when empty, a shorter live load range of travel, and greater reserve travel than the shared trucks. The end trucks and the shared trucks have four-cornered damper groups that have the same sized damper wedges. The damper wedges have non-metallic wear pads.

A method is for monitoring a space to the rear and / or a space to the sides for a multiple-unit vehicle combination having a trailer which has a camera arranged in a front region of the trailer for monitoring the space to the rear and / or the space to the sides, and a tractor vehicle having a mirror replacement system. The method includes: acquiring visibility information relating to the visibility of the trailer, of the space to the rear and / or of the space to the sides; determining display information on the basis of the visibility information; and, outputting a control signal for outputting image data from the camera on an output device on the basis of the display information.

A method of distributed control allocation in a vehicle combination including multiple vehicle units is provided, in which a master control allocator solves a combination-specific control allocation problem to perform control allocation on a combination level, and each of a plurality of slave control allocators receives unit-specific virtual control inputs from the master control allocator and then performs control allocation on vehicle unit level to control actuators of an associated vehicle unit. A method performed in a master control allocator, a method performed in a slave control allocator, a distributed control allocation system, a master control allocator, a slave control allocator, a vehicle combination, a vehicle unit, and computer programs and computer program products are also provided.

The invention provides an automatic frequency-adjustable and intensity-adjustable multi-unit pneumatic material loosening device which comprises a plurality of vibrating pieces arranged in the circumferential direction of a mineral stock bin. The driving parts are fixed to the mineral stock bin, and the output ends of the driving parts can drive the vibrating parts to vibrate; the monitoring module comprises a radar level gauge, a PLC (Programmable Logic Controller) and an energy supply assembly; the energy supply assembly is connected with the driving part and can adjust the output frequency and intensity of the output end of the driving part. According to the automatic frequency-adjustable and intensity-adjustable multi-unit pneumatic material loosening device, all-directional vibration material loosening of materials in a mineral material bin can be achieved, the problem that the arch breaking effect of local positions is poor is effectively solved, and meanwhile the output frequency and intensity of the energy supply assembly to the driving part can be adjusted according to the material level condition; automation and intellectualization of the arch breaking process are achieved, and the arch breaking efficiency is greatly improved.

The application discloses a bidirectional self-adaptive passive actuating mechanism and belongs to the technical field of buffering, shock absorption and displacement compensation. The mechanism is assembled without pre-tightening and is symmetrically arranged with bilateral elastic components. Only unilateral independent load bearing works under unilateral load, and the bilateral elastic components work alternately under bidirectional load, so that passive self-adaptive centering and bidirectional buffering and resetting are realized. The pure mechanical structure of the application does not need electric control, has strong environmental adaptability and long service life, can be used individually or combined in multiple units, and is suitable for scenes such as flexible connection, multi-dimensional compensation, spoke support and surface-to-surface force transmission.

Each of the multiple unit converters comprises a main circuit (30), a control circuit (32) configured to control multiple switching elements (11-14) according to a control signal received from a control device, a power supply (50) that generates a power supply voltage by stepping down the voltage of a first capacitor (15) and supplies the power supply voltage to the control circuit (32), and a current limiting resistor circuit (80) with a variable resistance value, placed between the main circuit (30) and the power supply (50). The power supply (50) comprises a second capacitor (51), an overcharge suppression circuit (54), a power supply circuit (56), and a control unit (500). The control unit (500) includes an overcharge suppression control circuit (53) that controls an overcharge suppression circuit (54) according to the magnitude of the voltage of the second capacitor (51), a current limiting resistor switching circuit (83) that switches the resistance value of the current limiting resistor circuit (80) according to the magnitude of the voltage of the first capacitor (15), and a short-circuit fault detection circuit (200) that detects a short-circuit fault in at least one switch of the current limiting resistor circuit (80) based on the duty cycle of the switching signal and the magnitude of the DC voltage of the first capacitor (15).

The application discloses a mineral material self-turning vehicle unloading operation process control system based on posture adjustment, relates to the technical field of unloading operation process control, and aims to solve the technical problem that in the prior art, a vehicle cannot be quickly identified as being accurately positioned, leading to unloading errors or repeated operations due to position deviation. Specifically, through multi-unit cooperative control, from vehicle approach position identification, safety verification to posture detection and early warning, a complete unloading operation closed-loop management is formed, the accuracy, safety and efficiency of the mineral material self-turning vehicle unloading operation are significantly improved, material loss and environmental risks are reduced, process optimization is realized through intelligent posture adjustment, and on the whole, the system improves the automation level and economy of the mineral material unloading operation, and is suitable for large-scale and high-intensity mineral material transportation scenes.

The invention relates to the technical field of flywheel energy storage systems, in particular to a consistency control method and system for a distributed flywheel energy storage system, and the method comprises the following steps: based on the flywheel energy storage system, analyzing the power and change trend of an energy storage unit, discriminating a load signal, comparing the power and rotating speed of multiple units in real time, triggering synchronous adjustment, and compensating output difference. And finally, optimizing the response consistency to obtain a consistency adjustment reference. According to the invention, through dynamic comparison of power difference and rotation speed change, multi-unit operation states are brought into an overall determination view angle, dynamic synchronization of energy distribution and output targets is realized, and after units with low energy utilization are screened, target correction is automatically completed, so that the adjustment action is finer, and output current and rotation speed parameters are linked; a self-adaptive compensation mechanism is formed for power output offset, a dynamic cooperation relation of units in a global situation is formed, and after an adjustment action is finished, a self-adjustment and discrimination mechanism is improved through comparison of a response rate and a state.

A method of control allocation in a multi-unit vehicle combination is provided. The units include actuators configured to generate propulsion and / or braking forces. The method includes receiving a virtual control input for the vehicle combination as a whole, solving a control allocation problem to find a true control input for the actuators, including attempting to minimize a difference between the true control input and a reference control input. The method includes controlling the actuators based on the true control input. In particular, the method includes generating the reference control input such that a) capabilities of the actuators are taken into account, and b) such that a longitudinal force contribution of one vehicle unit does not counteract the contribution of another vehicle unit.

This invention discloses a megawatt-level gear-driven unloading and shifting staged start-stop transmission system, comprising a gear-driven current-sharing mechanism, a staged start-stop control unit, and at least two independent electric transmission units. Each electric transmission unit has uniform specifications and can independently complete unloading, shifting, and power on / off. This invention, through single-unit unloading and shifting and multi-unit staged start-stop coordinated control, can lock the operating motor within its rated high-efficiency range, achieving high-efficiency operation under all operating conditions and redundant, fault-tolerant, uninterrupted operation without the need for a high-voltage variable frequency speed control system, adapting to various megawatt-level power generation and drive scenarios.

The application discloses a design and determination method of a train aerodynamic impact dynamic model test suitable for a lifting type platform door, takes a multi-unit lifting type platform door suitable for multi-standard railway vehicle stopping and meeting passenger boarding as a research object, refers to key technical parameters such as vehicle gauge, overall aerodynamic appearance scale, operation speed grade and the like of domestic different speed grade CRH series vehicles, CR400 series vehicles, city area trains and metro trains, adopts a scale model scheme suitable for test precision, establishes a standard double-line station layout test model meeting train straight-through and stopping, and based on the station layout test model, a test model of the multi-unit lifting type platform door is arranged, and the train aerodynamic impact dynamic model test design and data determination are carried out from aspects of test model process layout, a power system, a control system, a brake system, data acquisition system arrangement, test equipment selection and point arrangement methods.

The invention discloses a solid insulation medium-voltage ring main unit suitable for multi-unit integrated combination and a using method thereof. The solid insulation medium-voltage ring main unit comprises a frame shell assembly, a cavity separation assembly, a unit adjusting and mounting assembly, a thread pressing assembly and a bus adjusting and mounting assembly. The cavity separation assembly divides the interior of the frame shell assembly into a bus installation cavity and a plurality of unit module installation cavities, functional unit modules are installed in the unit module installation cavities through unit adjusting installation assemblies, and the threaded pressing assembly is used for abutting against and fixing the functional unit modules. According to the invention, flexible position adjustment of the functional unit module is realized through the unit adjustment and installation assembly, the installation and fixation reliability is improved by means of the thread pressing assembly, and the bus adjustment and installation assembly is adapted to busbars of different specifications. The problems that an existing ring main unit is poor in multi-unit integration and combination flexibility and insufficient in installation adaptability are solved.

This invention relates to the field of underwater vehicle technology and discloses an underwater vehicle capable of anchoring and escaping from entrapment, comprising: a fuselage shell; a water pumping device fixedly installed inside the fuselage shell; a foldable leg-type anchoring structure disposed around the bottom of the fuselage shell; a water film lubrication anchoring and escaping structure disposed at the bottom of the foldable leg-type anchoring structure; and a control system fixedly installed inside the fuselage shell and located on top of the water pumping device. This invention simplifies the structure significantly by eliminating the need for independent propulsion units and front and rear anchoring devices, replacing multiple unit combinations with a single leg; after the support leg is deployed, a hollow motor directly drives a auger drill bit to screw into the sediment, and the threaded structure directly engages with the soil to form anchoring force, eliminating the intermediate propulsion stage and resulting in faster anchoring response.