56results about How to "Implement redundant control" patented technology

The invention provides a compact integrated redundancy controller and a controlling method thereof. The controller is provided with two controllers which have identical structure and can be used alternatively by displacing. Each controller is provided with a storage chip, a flash memory chip, a firmware chip and a programmable apparatus which are respectively connected with a main control chip; the controller is also provided with a first serial port transceiver, a second serial port transceiver, a PCI bridge piece and a network card controller. The serial port transceivers are connected witha CPCI connector by a RS422 serial port; the network card controller is connected with the CPCI connector by an Ethernet port; the PCI bridge piece is connected with the CPCI connector by a CPCI bus;the serial port transceivers are also connected with a maintenance serial port; a programmable apparatus PLD is also connected with the CPCI connector by a HA control signal. The methods comprise thestarting method of main / standby controllers, the method that a standby controller is upgraded into a main controller automatically and a check point protocol control method when the main controller and the standby controller are switched in a system. The controller and the method can upgrade the system controller of a traditional CPCI system into a double-redundancy standby system, which solves the hidden trouble that single-point failure can easily occur in a CPCI system controller.

The invention relates to a micro-motion platform for a photo-etching motion platform system and a control method thereof. The micro-motion platform is mounted on a motion part of a workpiece platformand comprises a micro-motion plate and four vertical motors arranged at the bottom of the micro-motion plate; the four vertical motors are arranged at two sides of the micro-motion plate; each vertical motor is correspondingly provided with a sensor; an Rz motor is arranged between the two vertical motors at the same side; an air-floating decoupling device is arranged at a part which is no more than 30mm far away from the mass center of the micro-motion plate. According to the micro-motion platform provided by the invention, the four vertical motors and the four sensors are adopted to realizeredundancy control according to a redundancy driving principle and a redundancy measurement principle and the requirements on the frequency of the micro-motion plate are reduced; only if the frequencyof the micro-motion plate reaches about 120Hz, the bandwidth of 50Hz can be obtained; the requirements on valuable materials are reduced and the cost is reduced; the air-floating decoupling device isclose to the mass center of the micro-motion plate, but not the form center of the micro-motion plate, so that the output power of the Rz motor is extremely reduced.

An embodiment of the present invention provides an electric vehicle safety control method, an electric vehicle and a storage medium. The electric vehicle safety control method includes: when the position detection device is normal, using the position detection device to detect the position angle of the motor rotor obtained and rotating speed to perform closed-loop control on the electric motor of the electric vehicle; when the position detection device breaks down, use the estimated position angle and estimated rotating speed of the motor rotor observed by the motor model to perform closed-loop control on the electric motor of the electric vehicle. The embodiment of the present invention solves the problem that the whole vehicle loses power when a failure occurs through the redundant control of the electric vehicle position detection device, realizes risk control and redundant control, ensures the normal driving of the vehicle, and leaves enough time margin Drive the vehicle to a safe area or a 4S shop for maintenance.