SU934211A1 - Device for testing shaft angular position-to-pulse train converters - Google Patents

Description

(5 /) DEVICE TO CONTROL CONVERTERS

ANGLE OF TURNING IN THE PULSET SEQUENCE

-. . -.

This invention relates to instrumentation engineering and may find

/, ti application, for example when tested. ke angular precision measuring instruments.

A device is known for monitoring converters of angle of turn into a code containing an electric drive, an exemplary converter, two frequency divider, a phase meter, a recording unit l. ,

The drawback of the device is the lack of high accuracy of control due to errors due to the average signals from the frequency dividers and the dependence of the phase shift transducer to the output signal from the instability of the rotational speed inside the revolution.

The closest technical solution to the invention is a control device. rotation angle converters in sequence. impulses containing turning

a platform installed in rotation supports, an exemplary angle transducer placed on the platform, two dividers of the frequency, the input of the first of which is connected to the main output of an HLT-transducer installed during platform control, a time interval meter whose counting input is connected to the output of the reference transformed The developer has a registration unit connected to the output of the time interval meter f 2.

- The disadvantage of the known device

M is of low accuracy due to the error due to random variation of time delays in the channels of the Signals arriving at the JQ control inputs of the time interval meter,.

Claims (1)

The purpose of the invention is to improve the accuracy of control. 3 The goal is achieved by the fact that the device is equipped with a time delay unit connected inlet to the output of the second frequency divider, two switches, two inputs of the first of which are connected respectively to the main and rotational outputs of the controlled angle converter, the output to the second input the frequency divider, the first input of the second switch is connected to the output of the time delay unit and its fourth input, the second to the output of the second frequency divider and its third input, the fifth to the output of the first divider hour The notes per vy output of the second switch is coupled to an input start, and the second -. s, Stop meter input timeslots. . The drawing shows a block diagram of the device. The device contains a rotary platform 1 installed in rotation supports 2, an exemplary converter 3 placed on the platform, frequency dividers i and 5, a time delay block 6, a switch 7 with corresponding inputs connected to the outputs of the frequency dividers and a time delay block, a time meter 8 intervals, the counting input connected to the output of a circular angle transducer, and the Start and Stop inputs to the corresponding outputs of the switch 7 and the rectifier 9. associated with the output of the meter 8 time intervals, switch 10, the inputs of which are connected respectively to the main and rotational outputs of the controlled angle converter 11, which is installed during the control on the platform. The device can operate in four modes: determining the corrections to the measurement results; determining the angular price of a pulse period from a reference angle transducer; determining the actual pitch of the angle of the transducer to be controlled; determine 1; p real values of the sum of shagbyv of the angle of the controlled converter j In the first mode, the number of pulses from an exemplary prepressor 3 angles arriving at the meter input of the meter is determined. During time intervals 3d, deceleration time (ki) .: 1 measurements. At the same time, the input of the start of the meter 8 through the switch 10, the frequency divider 5 and the switch 7 receives a signal from the main output of the monitored converter, to the input. The stop through the switch 7 gives the signal from unit 6 temporarily When working in the second mode, the meter 8 timeslots sucks the number of pulses N from the reference angle converter 3 during one revolution of the platform.At the same time, the input of the meter 8 through the switch 10, frequency divider 5, time delay block 6 and switch 7 receives a signal from the main output of the controlled converter, to the output signal, from the frequency divider 5. The frequency divider coefficient 5 is chosen equal to the number of pulses from the controlled angle converter during one revolution of the converter shaft Caller, Angle price "d period of pulses from a reference angle transducer is determined by the formula 360 When operating in the third mode, the Meter 8 time intervals counts the number of pulses N from an exemplary angle converter over time proportional to one step of the controlled angle converter. At the same time, the Start input and through the switch 10, the frequency divider 5, the time delay block 6 and the switch 7 receive a signal from the main output of the controlled angle converter, to the input Stop the output signal from the frequency divider. The division factor of the divider frequency 5 is chosen to be one more than the number of pulses from the controlled converter per revolution of the converter shaft. The division factor of the frequency divider k is chosen to be one. The actual value of step V is defined as. When operating in the fourth mode, the number of pulses NjC of the reference angle converter 3 is determined per time, which is proportional to two or more steps of the controlled angle converter. The division factor of the divider + frequency is chosen equal to the number of pulses from the controlled converter 3 angles per revolution of its shaft. The actual angle is pjj. it is determined by the formula f a (N, jj + dN). When assigning the measurement results to the corresponding parts of the raster, it is necessary to use the switch 10 to connect the input of the frequency divider 5 to the circulating you, the stroke of the controlled converter and the division factor of the frequency divider 5 to be equal to one. When using block 6 of the time delay with discrete setting of the delay time, the value of which should be a multiple of the pulse period from the controlled converter, you can manually determine the actual step size with the required number. Claims An apparatus for monitoring rotation angle converters in a sequence of pulses, comprising a rotary platform installed in rotation supports, an exemplary angle converter placed on the platform, two frequency dividers, the first input of which is connected to the main output of the controlled transformer installed at | control, to the platform, a time meter, the counting input of which is connected with the output of an exemplary angle transducer, a registration unit connected to the output of the time interval meter, characterized in that, in order to increase the control accuracy, it is equipped with a time delay unit connected by the output to the output the second frequency divider, two switches, the two inputs of the first of which are connected respectively to the main and rotational outputs of the controlled angle converter, the output to the input of the second divider frequency, the first input of the second switch is connected with the output of the time delay unit and its fourth input, the second with the output of the second frequency divider and its third input, the fifth with the output of the first frequency divider, the first output of the second switch is connected with the Start input, and the second - with the entrance. Stop meter time inter-. shafts. . Sources of information taken into account in examination 1, Measuring equipment I № 3, p. 20. Z, Measuring equipment, 1977 ff 7 p. 21 (prototype). Zh ,) Cm0n „Start