Qkm Technology (dong Guan) Co., Ltd

Jiang Liu

Bin Wang

Lihui Chen

Rongkui Zheng

Yu Lei

Hui Du

Chi Sha

Jinbo Shi

Chunhua Yu

Xuelin Tian

Zhongcai Guo

An integrated radiator having a temperature gradient is disposed between a high-temperature device and a low-temperature device. The integrated radiator includes a first heat dissipation unit and a second heat dissipation unit which are integrally fixed. The first heat dissipation unit is configured to maintain the high-temperature device within a first temperature range, and the second heat dissipation unit is configured to maintain the low-temperature device within a second temperature range. A thermal conductive path of the first heat dissipation unit is isolated from a thermal conductive path of the second heat dissipation unit, and the first heat dissipation unit is physically connected to but thermally separated from the second heat dissipation unit.

Integrated radiator having temperature gradient

A distributed multi-node control system () and method, relating to the field of control technology. The distributed multi-node control system () comprises: a first control node (), a second control node (), a plurality of servo nodes () and a plurality of execution devices (), the first control node () and the second control node () being respectively communicationally connected to the plurality of servo nodes (), the servo nodes () being electrically connected to the execution devices () and configured to control operating states of the corresponding execution devices (), the first control node () being configured to control an operating state of at least one first servo node () among the plurality of servo nodes (), the second control node () being configured to control an operating state of at least one second servo node () among the plurality of servo nodes ().

Distributed multi-node control system and method, and control node

A control method and device () based on an industrial Ethernet relate to the technical field of Ethernet. The industrial Ethernet involves a master node and a plurality of slave nodes. The master node transmits a predetermined packet to a first slave node (S). The first slave node transmits the predetermined packet having been rewritten by the first slave node to a succeeding slave node linked to the first slave node until a last slave node in the plurality of the slave nodes receives the predetermined packet having been rewritten by all preceding slave nodes in the plurality of the slave nodes; and the last slave node transmits the predetermined packet back to the master node (S). The master node then parses the predetermined packet, which has been rewritten by each of the plurality of the slave nodes, to uncover a topology of the slave nodes (S). The master node informed by the topology transmits a command packet to one of the plurality of the slave nodes to be controlled (S). As is shown, the predetermined packet transmitted by the master node is sequentially rewritten by the plurality of the slave nodes so that the master node can be informed of the topology of the slave nodes, thereby realizing distributed control and centralized management and improve security and reliability.

Control method and device based on industrial ethernet

The present invention provides a method for detecting motor initial phase and phase sequence and a system for controlling a permanent-magnet synchronous motor. The method is applied to the system and comprises sequentially acquiring, through an encoder, first displacement data which register the encoder's reading when a rotor spins to a Q-axis, second displacement data which register the encoder's reading when the rotor spins from the Q-axis to a D-axis, third displacement data which register the encoder's reading when the rotor spins from the D-axis to a negative Q-axis and fourth displacement data which register the encoder's reading when the rotor spins from the negative Q-axis to the D-axis; obtaining an initial phase of the motor to be detected according to the second displacement data, the fourth displacement data and the encoder's CPR; and determining the phase sequence of the motor based on the first displacement data, the second displacement data and the encoder's CPR. That is to say, the method can not only automatically detect the initial phase of the rotor, but also the motor wiring phase sequence, and overcome the influence of friction force to improve the initial phase detection precision.

Method for detecting motor initial phase and phase sequence and system for controlling permanent-magnet synchronous motor

Disclosed are an encoder signal sampling method and device. According to the method and device, a data frequency of the encoder is obtained, a clock frequency is determined according to the data frequency, a high-frequency clock signal is generated based on the clock frequency, an input signal of the encoder is sampled based on the high-frequency clock signal to obtain a sampled signal, and finally denoising processing is performed on the sampled signal based on a preset algorithm by a processer.

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Dongguan, China

Jiang Liu