Online dynamic balance control method and system for spaceborne rotary camera
A camera and space-borne technology, applied in the aerospace field, can solve problems such as unsatisfactory control accuracy and speed, complicated process, etc.
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example 1
[0211] This example provides an online dynamic balance control method for a spaceborne rotating camera, which is based on two balance heads that are installed on the left and right end faces of the camera rotor and move in polar coordinates, by driving a total of four balance weights on the two balance heads to rotate in the circumferential direction To achieve the purpose of control, the following steps can be followed:
[0212] Step 1: The balance weight on each balance head does not move, the sensor measures the vibration information of the measuring point, and calculates the first vibration amount at the initial moment They are calculated as
[0213]
[0214] In the formula, X is the vector composed of the vibration amplitude extracted by the vibration sensor at each measuring point, A is the influence coefficient matrix of the unbalance of the correction plane on the test point, m is the mass of the balance weight, and r is the distance between the balance weight and ...
example 2
[0231] like Figure 4 As shown, first, the improvement of the technical solution provided by the previous example of this example is explained. Based on two balance heads that move in polar coordinates on the left and right ends of the camera rotor, by driving a total of four balance weights on the two balance heads Circumferential rotation achieves the purpose of control, Figure 4 The middle z-axis is the axial direction of the rotor shaft, the unbalanced mass of the camera rotor is P, and two balance heads are respectively arranged on the left and right end surfaces of the camera rotor (such as Figure 4 As shown, the balance end face 1 and the balance end face 2), each balance head contains two balance weights, and the balance weights move according to polar coordinates. The balance weight can rotate in the circumferential direction on a surface with a radius r from the rotating shaft, and the angular positions of the four balance weights are φ 11 , φ 12 and φ 21 , φ ...
example 3
[0233] like Figure 5 As shown, this example provides an online dynamic balance control method for a spaceborne rotating camera, including:
[0234] S1: Obtain the initial value of the vibration amount (corresponding to the aforementioned first vibration amount) through measurement and calculation;
[0235] S2: Rotate the balance weight for the first time, measure and calculate the vibration amount (corresponding to the aforementioned second vibration amount);
[0236] S3: Calculate the value of the fixed quantity;
[0237] S4: Rotate the balance weight for the second time, measure and calculate the vibration amount (corresponding to the aforementioned third vibration amount);
[0238] S5: Calculate the current angle of the balance weight;
[0239] S6: Calculate the angle required to rotate the balance weight;
[0240] S7: Judging whether the balance requirements are met, if the adjustment is over, if not, go to S8:
[0241] S8: Judging whether the highest precision is re...
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