Abstract: A blockchain based numerical value ranking method includes: using, by a first participant, a public key of the first participant to encrypt a private value of the first participant to obtain an encrypted text of the first participant; obtaining encrypted texts of other participants, and generating a challenge value having a preset bit length; based on the challenge value and the private value of the first participant, and the encrypted texts and public keys of the other participants, determining mixed results of the first participant with respect to the other participants; and determining a numerical value ranking result between the first participant and a second participant based on the mixed result of the second participant with respect to the first participant.

Abstract: A blockchain based numerical value ranking method includes: using, by a first participant, a public key of the first participant to encrypt a private value of the first participant to obtain an encrypted text of the first participant; obtaining encrypted texts of other participants, and generating a challenge value having a preset bit length; based on the challenge value and the private value of the first participant, and the encrypted texts and public keys of the other participants, determining mixed results of the first participant with respect to the other participants; and determining a numerical value ranking result between the first participant and a second participant based on the mixed result of the second participant with respect to the first participant.

Abstract: A lithium battery system comprising a battery and a feedback current control apparatus having a first current capture device that comprises: a first feedback current capture module for capturing feedback current; a first switch module for conducting or unidirectionally cutting off a main circuit; and a control module for receiving a first voltage of one end of a driver on the main circuit, a second voltage of one end of the battery, and the temperature of the battery. When a difference between the first and second voltage is greater than a preset voltage and the temperature of the battery is less than or equal to a preset temperature, the first switch module is controlled to unidirectionally cut off the main circuit to capture feedback current by the first feedback current capture module on a first current capture circuit, greatly reducing the probability of lithium precipitation and risk of thermal runaway.

Abstract: The invention relates to a feedback current control device and aerial equipment. The feedback current control device includes: a feedback current capture module, located on a current capture circuit and configured to capture a feedback current; a first switch module, configured to turn on or off the current capture circuit; and a control module, including: a first receiving unit, configured to receive a first voltage at one end of the driver and a second voltage at one end of a battery on a feed circuit and a temperature of the battery; and a first control unit, configured to control the first switch module to turn on the current capture circuit for capturing the feedback current when the difference between the first voltage and the second voltage is greater than a preset voltage and the temperature of the battery is less than or equal to a preset temperature.

Abstract: The present invention relates to a vehicle data communication and interaction system and a construction method thereof. The system includes a first test vehicle placed in an environment perception test platform and a second test vehicle placed in a rotating hub test platform, an i-ECU, a VCU, and a vehicle bottom electronic control unit that are communicatively connected with each other are mounted on each of the first test vehicle and the second test vehicle, and a sensor is further mounted on the first test vehicle. The first test vehicle is communicatively connected to the second test vehicle, and specifically, the VCU or a network gateway is connected via the sensor, to implement a communication connection between the two test vehicles. Accordingly, the complexity of the connection with the VCU can be simplified, and real-time efficiency data interaction between two test vehicles may be implemented, so that the test vehicle has complete full vehicle performance and a real-time operation response.

Abstract: A method for adaptive estimation of a road surface adhesion coefficient for a vehicle with complex excitation conditions taken into consideration comprises the following steps: 1) designing an estimator according to a single-wheel dynamics model of a vehicle, and estimating a longitudinal tire force and a road surface peak adhesion coefficient under longitudinal excitation; 2) designing an estimator according to a two-degree-of-freedom kinematic model of the vehicle, and estimating a tire aligning moment and a road surface peak adhesion coefficient under excitation of a lateral force; and 3) determining an excitation condition met by the vehicle according to a vehicle state parameter, performing fuzzy inference to obtain limits achievable by current longitudinal and lateral tire forces, and designing a fusion observer to fuse estimation results. The method achieves favorable robustness, improves real-time capability, and can be performed quickly and accurately.

Abstract: A whole vehicle in-loop test system of an intelligent automobile, including: a rotary drum platform, used for simulating a longitudinal movement of a test vehicle; an environment perception platform, disposed at a front end of the rotary drum platform, used for simulating a transverse movement of a test vehicle, and including a support base at a lower portion and a vehicle placing platform at an upper portion, where a transverse drive wheel is mounted at the lower portion of the support base, and the transverse drive wheel moves along a transverse track disposed on the ground; and a target vehicle simulation unit, disposed at a periphery of the environment perception platform, and configured to simulate a target vehicle.

Abstract: A yaw motion control method for a four-wheel distributed vehicle includes: calculating the steering response of the vehicle in a steady state using a nonlinear vehicle model in reference with an understeering degree while constraining by the limit value of the road surface adhesion condition according to the sideslip angle response and the vertical load change in the steady state, calculating the lateral force response and the self-aligning moment response of the tires in the steady state by a magic tire formula, calculating the required additional yaw moment by using the yaw motion balance equation, reasonably distributing the generalized control force to the four drive motors through the optimization algorithm in combination with the current driving conditions; finally, off-line storing and retrieving the calculation results of the off-line distribution of different vehicle parameters required by different upper layers to distribute the torques to the four drive wheels.

Abstract: The present invention relates to a safety protection device, disclosing an anti-squeezing device for mobile console, comprising: an opening/closing mechanism pivotally mounted in the area of an operating desktop of the mobile console, capable of pivotally opening from a closed state in a direction away from the operator in response to the squeezing thrust of the operator to form a dodging space; and a position signal detection mechanism mounted to detect and transmit an opening/closing position signal of the opening/closing mechanism, so that a control unit of the mobile console may perform control operations based on the opening/closing position signal. The present invention further discloses an application-specific pusher-type anti-squeezing device for mobile console and an aerial work machine.

Abstract: A yaw motion control method for a four-wheel distributed vehicle includes: calculating the steering response of the vehicle in a steady state using a nonlinear vehicle model in reference with an understeering degree while constraining by the limit value of the road surface adhesion condition according to the sideslip angle response and the vertical load change in the steady state, calculating the lateral force response and the self-aligning moment response of the tires in the steady state by a magic tire formula, calculating the required additional yaw moment by using the yaw motion balance equation, reasonably distributing the generalized control force to the four drive motors through the optimization algorithm in combination with the current driving conditions; finally, off-line storing and retrieving the calculation results of the off-line distribution of different vehicle parameters required by different upper layers to distribute the torques to the four drive wheels.

Abstract: A data packet processing method comprises: receiving data packet including a key message; analyzing the key message; determining whether the data packet is a high priority data packet or a normal data packet according to a result of analyzing the first key message of the data packet; and executing an Rx high priority interrupt in response to determining that the data packet is the high priority data packet. The Rx high priority interrupt is to immediately transmit an interrupt signal to interrupt receiving of the data packets.

Abstract: A data packet processing method comprises: receiving data packet including a key message; analyzing the key message; determining whether the data packet is a high priority data packet or a normal data packet according to a result of analyzing the first key message of the data packet; and executing an Rx high priority interrupt in response to determining that the data packet is the high priority data packet. The Rx high priority interrupt is to immediately transmit an interrupt signal to interrupt receiving of the data packets.