Angle detection signal processing device

Abstract

To provide an angle detection signal processing device capable of outputting digital angle data corresponding to a pair of angle detection signals even when the pair of angle detection signals output from the angle detection device are phase modulation signals, amplitude modulation signals, or signals that do not include a carrier wave component.SOLUTION: A phase lock unit has a feedback signal selection unit, a signal processing unit, a synchronous detection unit, and a rectification selection unit. When a pair of angle detection signals are phase-modulated signals, the feedback signal selection unit selects the offset signal, and the rectification selection unit selects a first signal. When the pair of angle detection signals are amplitude modulated signals, the feedback signal selection unit selects the digital angle data, and the rectification selection unit selects a second signal, and an excitation signal is used. When a pair of angle detection signals does not include a carrier component, the feedback signal selection unit selects the digital angle data, the rectification selection unit selects the second signal, and a fixed value is used.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an angle detection signal processing device. [Background technology]

[0002] Conventionally, there is known an angle detection signal processing device that receives a pair of angle detection signals output from an angle detection device, controls the feedback signal so that a control deviation signal obtained from the pair of angle detection signals and a feedback signal becomes zero, and outputs digital angle data. This angle detection signal processing device has a phase lock unit. This phase lock unit includes a signal processing unit that multiplies a sine wave signal and a cosine wave signal corresponding to the feedback signal by the pair of angle detection signals in correspondence with each other, and outputs the difference between the multiplied values ​​as a control deviation signal (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-205166 Summary of the Invention [Problem to be solved by the invention]

[0004] In the configuration of the angle detection signal processing device described in Patent Document 1, when a pair of angle detection signals are phase modulation signals, digital angle data corresponding to the pair of angle detection signals is output. However, the configuration of the angle detection signal processing device described in Patent Document 1 has a problem in that when the pair of angle detection signals are amplitude modulation signals or when the pair of angle detection signals are signals that do not include a carrier wave component, it is not possible to output digital angle data corresponding to the pair of angle detection signals.

[0005] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an angle detection signal processing device that can output digital angle data corresponding to a pair of angle detection signals output from an angle detection device, even if the pair of angle detection signals are phase modulation signals, amplitude modulation signals, or signals that do not contain a carrier wave component. [Means for solving the problem]

[0006] The angle detection signal processing device according to the present invention is an angle detection signal processing device that receives a pair of angle detection signals output from an angle detection device, controls the feedback signal so that a control deviation signal obtained based on the pair of angle detection signals and a feedback signal becomes zero, and outputs digital angle data, and includes a phase lock unit, the phase lock unit including a feedback signal selection unit that selects, as the feedback signal, digital angle data or an offset signal obtained by offsetting the digital angle data from a reference signal, a signal processing unit that multiplies a sine wave signal and a cosine wave signal corresponding to the feedback signal by the pair of angle detection signals in correspondence with each other, and outputs a signal that is the difference between the multiplied values ​​as a first signal, a synchronous detection unit that rectifies the first signal using a rectification signal and outputs the rectified signal as a second signal, and a control deviation signal. and a rectification / non-rectification selection unit that selects the first signal or the second signal, wherein when the pair of angle detection signals are phase modulation signals, the feedback signal selection unit selects the offset signal as the feedback signal, and the rectification / non-rectification selection unit selects the first signal as the control deviation signal, and when the pair of angle detection signals are amplitude modulation signals, the feedback signal selection unit selects the digital angle data as the feedback signal, and the rectification / non-rectification selection unit selects the second signal as the control deviation signal, and an excitation signal generated from the reference signal is used as the rectification signal, and when the pair of angle detection signals are signals that do not contain a carrier wave component, the feedback signal selection unit selects the digital angle data as the feedback signal, and the rectification / non-rectification selection unit selects the second signal as the control deviation signal, and a preset fixed value is used as the rectification signal. In the angle detection signal processing device according to the present invention, the phase lock unit has a digital signal conversion unit that converts the first signal from an analog signal to a digital signal. The angle detection signal processing device according to the present invention includes a digital signal conversion section that is provided on the input side of the phase lock section and converts the pair of angle detection signals from analog signals to digital signals. The angle detection signal processing device according to the present invention is an angle detection signal processing device that receives as input a pair of angle detection signals output from an angle detection device, controls the feedback signal so that a control deviation signal obtained based on the pair of angle detection signals and a feedback signal becomes zero, and outputs digital angle data, and includes a synchronous detection unit that rectifies each of the pair of angle detection signals using a rectification signal and outputs a pair of rectified angle detection signals that are the rectified pair of signals, a rectification / non-rectification selection unit that selects and outputs the pair of angle detection signals or the pair of rectified angle detection signals, and a phase lock unit that receives as input the pair of angle detection signals or the pair of rectified angle detection signals output from the rectification / non-rectification selection unit, and the phase lock unit selects as feedback signals digital angle data or an offset signal obtained by offsetting the digital angle data from a reference signal, and and a signal processing unit that multiplies the output signal or the pair of rectified angle detection signals by corresponding them to each other and outputs a signal that is a difference between the multiplied values ​​as a control deviation signal, wherein when the pair of angle detection signals are phase modulation signals, the feedback signal selection unit selects an offset signal as the feedback signal, and the rectification selection unit selects and outputs the pair of angle detection signals; when the pair of angle detection signals are amplitude modulation signals, the feedback signal selection unit selects digital angle data as the feedback signal, and the rectification selection unit selects and outputs the pair of rectified angle detection signals; an excitation signal generated from a reference signal is used as the rectification signal; when the pair of angle detection signals are signals that do not contain a carrier wave component, the feedback signal selection unit selects the digital angle data as the feedback signal, and the rectification selection unit selects and outputs the pair of rectified angle detection signals, and a preset fixed value is used as the rectification signal. In the angle detection signal processing device according to the present invention, the phase lock section has a digital signal conversion section that converts the control deviation signal from an analog signal to a digital signal. The angle detection signal processing device according to the present invention includes a digital signal conversion section that is provided on the input side of the phase lock section and converts the pair of angle detection signals from analog signals to digital signals. In the angle detection signal processing device according to the present invention, the selection by the feedback signal selection section and the selection by the rectification / non-rectification selection section are performed by the same operation selection signal. [Effects of the Invention]

[0007] According to the angle detection signal processing device of the present invention, it is possible to output digital angle data corresponding to a pair of angle detection signals, regardless of whether the pair of angle detection signals output from the angle detection device are phase modulation signals, amplitude modulation signals, or signals that do not contain a carrier wave component. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a block diagram showing an angle detection signal processing device according to a first embodiment. [Figure 2] 2 is a block diagram showing an angle detection signal processing device in the case where a pair of angle detection signals output from the angle detection device of FIG. 1 are amplitude modulation signals. FIG. [Figure 3] 2 is a block diagram showing an angle detection signal processing device in the case where a pair of angle detection signals output from the angle detection device of FIG. 1 are signals that do not contain a carrier wave component. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Embodiment 1 Fig. 1 is a block diagram showing an angle detection signal processing device according to embodiment 1. In addition to angle detection signal processing device 1, Fig. 1 shows an angle detection device 2, an excitation circuit 3 that generates an excitation signal to be input to angle detection device 2, and a reference signal generating unit 4 that generates a reference signal to be input to excitation circuit 3. The angle detection signal processing device according to embodiment 1 is an angle detection signal processing device that receives a pair of angle detection signals output from angle detection device 2, controls the feedback signal so that a control deviation signal obtained based on the pair of angle detection signals and a feedback signal becomes zero, and outputs digital angle data.

[0010] First, the angle detection device 2, excitation circuit 3, and reference signal generating unit 4 will be described. FIG. 1 shows a phase modulation type angle detection device 2. A pair of excitation signals is input to the angle detection device 2. One of the pair of excitation signals is referred to as a first excitation signal, and the other excitation signal is referred to as a second excitation signal. The first excitation signal is expressed as E·sinω R t, and the second excitation signal is E cosω R t, where E is a constant and ω R is the angular velocity and t is the time.

[0011] When a pair of excitation signals are input to the angle detection device 2, a pair of angle detection signals corresponding to the angle θ(t) detected by the angle detection device 2 is output from the angle detection device 2. One of the pair of angle detection signals is referred to as a first angle detection signal, and the other angle detection signal is referred to as a second angle detection signal. In FIG. 1, the first angle detection signal is expressed as K·E·sin(ω R t-θ), and the second angle detection signal is expressed as K·E·cos(ω R t−θ) Therefore, in FIG. 1, the pair of angle detection signals output from the angle detection device 2 are phase modulation signals.

[0012] The pair of excitation signals input to the angle detection device 2 is generated by an excitation circuit 3. The excitation circuit 3 includes a reference signal ω R t is input to the excitation circuit 3. Rt is used to output a pair of excitation signals. The reference signal ω is input to the excitation circuit 3. R t is generated by the reference signal generating unit 4.

[0013] Next, a description will be given of the angle detection signal processing device 1 according to embodiment 1. The angle detection signal processing device 1 according to embodiment 1 includes a phase lock unit 11.

[0014] The phase lock unit 11 includes a signal processing unit 111, a digital signal conversion unit 112, an inversion unit 113, a synchronous detection unit 114, a rectification / non-rectification selection unit 115, a control law 116, an integration unit 117, a feedback signal selection unit 118, and a signal conversion unit 119.

[0015] A pair of angle detection signals output from the angle detection device 2 are input to the signal processing unit 111. A sine wave signal and a cosine wave signal (to be described later) output from the signal conversion unit 119 are input to the signal processing unit 111. The sine wave signal is expressed as sinX, and the cosine wave signal is expressed as cosX.

[0016] Between the sine wave signal and the cosine wave signal and the pair of angle detection signals, the sine wave signal and the second angle detection signal correspond to each other, and the cosine wave signal and the first angle detection signal correspond to each other.

[0017] The signal processing unit 111 includes a multiplication unit 111a, a multiplication unit 111b, and a subtraction unit 111c. The multiplication unit 111a multiplies the first angle detection signal by a cosine wave signal. The value multiplied by the multiplication unit 111a is output from the multiplication unit 111a and input to the subtraction unit 111c. The multiplication unit 111b multiplies the second angle detection signal by a sine wave signal. The value multiplied by the multiplication unit 111b is output from the multiplication unit 111b and input to the subtraction unit 111c. The subtraction unit 111c subtracts the value multiplied by the multiplication unit 111a from the value multiplied by the multiplication unit 111b. The value subtracted by the subtraction unit 111c is output from the subtraction unit 111c as a first signal.

[0018] That is, the signal processing unit 111 multiplies the sine wave signal and the cosine wave signal by the pair of angle detection signals in a corresponding manner, and outputs a signal that is the difference between the respective multiplied values ​​as a first signal.

[0019] The first signal output from signal processing unit 111 is input to digital signal conversion unit 112. Digital signal conversion unit 112 converts the first signal output from signal processing unit 111 from an analog signal to a digital signal. The first signal converted from an analog signal to a digital signal is output from digital signal conversion unit 112.

[0020] The first signal output from digital signal conversion unit 112 is input to inversion unit 113. Inversion unit 113 inverts the first signal output from digital signal conversion unit 112. The inverted first signal is output from inversion unit 113.

[0021] The inverted first signal output from the inverter 113 is input to the synchronous detector 114. As will be described later, a rectification signal is input to the synchronous detector 114. The synchronous detector 114 rectifies the inverted first signal using the rectification signal and outputs the rectified signal as a second signal. Note that if the pair of angle detection signals are phase modulation signals, the rectification signal does not need to be input to the synchronous detector 114. Therefore, the rectification signal is not shown in FIG. 1.

[0022] The first signal output from the digital signal conversion unit 112 and the second signal output from the synchronous detection unit 114 are input to the rectification / non-rectification selection unit 115. An operation selection signal is input to the rectification / non-rectification selection unit 115. The operation selection signal changes depending on the type of the pair of angle detection signals input to the angle detection signal processing device 1. The rectification / non-rectification selection unit 115 selects the first signal or the second signal as the control deviation signal based on the operation selection signal. The selected first signal or second signal is output from the rectification / non-rectification selection unit 115.

[0023] The control deviation signal output from rectification / non-rectification selection unit 115 is input to control law 116. Control law 116 calculates an angular velocity signal so that the control deviation signal becomes zero. The calculated angular velocity signal is output from control law 116.

[0024] The angular velocity signal output from the control law 116 is input to the integrator 117. The integrator 117 integrates the angular velocity signal. The value integrated by the integrator 117 is output from the integrator 117 as digital angle data. The digital angle data is represented as φ.

[0025] The feedback signal selection unit 118 receives the digital angle data φ output from the integrating unit 117. The feedback signal selection unit 118 also receives the reference signal ω R An offset signal obtained by offsetting the digital angle data φ from t is input to the feedback signal selection unit 118. An operation selection signal is also input to the feedback signal selection unit 118. Based on the operation selection signal, the feedback signal selection unit 118 selects the digital angle data φ or the offset signal as the feedback signal X. The selected digital angle data φ or offset signal is output from the feedback signal selection unit 118.

[0026] The feedback signal X output from the feedback signal selection unit 118 is input to the signal conversion unit 119. The signal conversion unit 119 outputs a sine wave signal and a cosine wave signal corresponding to the feedback signal X.

[0027] When the pair of angle detection signals output from the angle detection device 2 are phase modulation signals, the rectification selection unit 115 selects the first signal as the control deviation signal, and the feedback signal selection unit 118 selects the offset signal as the feedback signal X. As a result, the control deviation signal becomes K·E·sin(θ-φ), and by controlling the feedback signal X so that the control deviation signal obtained from the pair of angle detection signals and the feedback signal X becomes zero, digital angle data φ is output from the angle detection signal processing device 1.

[0028] Next, a case will be described where the pair of angle detection signals output from the angle detection device 2 are amplitude modulation type signals. Fig. 2 is a block diagram showing the angle detection signal processing device 1 when the pair of angle detection signals output from the angle detection device 2 of Fig. 1 are amplitude modulation type signals. Fig. 2 shows an amplitude modulation type angle detection device 2.

[0029] When a pair of angle detection signals output from the angle detection device 2 are amplitude modulation signals, one excitation signal is input to the angle detection device 2. In this case, the excitation signal is expressed as E sinω R It is expressed as t.

[0030] When the pair of angle detection signals output from the angle detection device 2 are amplitude modulation signals, the first angle detection signal is K·E·sinθ·sinω R t, and the second angle detection signal is K·E·cosθ·sinω R It is expressed as t.

[0031] When the pair of angle detection signals output from the angle detection device 2 are amplitude modulation signals, the feedback signal selector 118 selects the digital angle data φ as the feedback signal X. The rectification selector 115 selects the second signal as the control deviation signal. The reference signal ω is used as the rectification signal. R An excitation signal generated from t is used. By using the excitation signal as a rectification signal, a signal in which the carrier wave component has been removed from the inverted first signal is output as the second signal. As a result, the control deviation signal becomes K·E·sin(θ-φ), and by controlling the feedback signal X so that the control deviation signal obtained from the pair of angle detection signals and the feedback signal X becomes zero, digital angle data is output from the angle detection signal processing device 1.

[0032] Next, a case will be described where the pair of angle detection signals output from the angle detection device 2 are signals that do not contain a carrier wave component. Fig. 3 is a block diagram showing the angle detection signal processing device 1 where the pair of angle detection signals output from the angle detection device 2 of Fig. 1 are signals that do not contain a carrier wave component. Fig. 2 shows an angle detection device 2 that does not use an excitation signal.

[0033] When the pair of angle detection signals output from the angle detection device 2 are signals that do not include a carrier wave component, no excitation signal is input to the angle detection device 2.

[0034] When a pair of angle detection signals output from the angle detection device 2 are signals that do not contain a carrier wave component, the first angle detection signal is expressed as K·E·sinθ, and the second angle detection signal is expressed as K·E·cosθ.

[0035] If the pair of angle detection signals output from the angle detection device 2 are signals that do not contain a carrier wave component, the feedback signal selection unit 118 selects the digital angle data φ as the feedback signal X. The rectification selection unit 115 selects the second signal as the control deviation signal. A preset fixed value is used as the rectification signal. By using a fixed value as the rectification signal, the inverted first signal is output as is as the second signal. As a result, the control deviation signal becomes K·E·sin(θ-φ), and by controlling the feedback signal X so that the control deviation signal obtained from the pair of angle detection signals and the feedback signal X becomes zero, digital angle data is output from the angle detection signal processing device 1.

[0036] As described above, the angle detection signal processing device according to the first embodiment is an angle detection signal processing device that receives a pair of angle detection signals output from the angle detection device 2, controls the feedback signal X so that a control deviation signal obtained based on the pair of angle detection signals and the feedback signal X becomes zero, and outputs digital angle data φ. The angle detection signal processing device includes a phase lock unit 11. The phase lock unit 11 has a feedback signal selection unit 118, a signal processing unit 111, a synchronous detection unit 114, and a rectification / non-rectification selection unit 115. The feedback signal selection unit 118 selects, as the feedback signal X, the digital angle data φ or the reference signal ω R The signal processing unit 111 multiplies the sine wave signal and cosine wave signal corresponding to the feedback signal X by the pair of angle detection signals in correspondence with each other, and outputs a signal that is the difference between the multiplied values ​​as a first signal. The synchronous detection unit 114 rectifies the first signal using the rectification signal and outputs the rectified signal as a second signal. The rectification / non-rectification selection unit 115 selects the first signal or the second signal as the control deviation signal. When the pair of angle detection signals are phase modulation signals, the feedback signal selection unit 118 selects the offset signal as the feedback signal X, and the rectification / non-rectification selection unit 115 selects the first signal as the control deviation signal. When the pair of angle detection signals are amplitude modulation signals, the feedback signal selection unit 118 selects the digital angle data φ as the feedback signal X, and the rectification / non-rectification selection unit 115 selects the second signal as the control deviation signal, and outputs the reference signal ω as the rectification signal. Rt is used. When the pair of angle detection signals does not contain a carrier wave component, the feedback signal selector 118 selects the digital angle data φ as the feedback signal X, the rectification selector 115 selects the second signal as the control deviation signal, and a preset fixed value is used as the rectification signal. With this configuration, regardless of whether the pair of angle detection signals output from the angle detection device 2 are phase modulation signals, amplitude modulation signals, or signals not containing a carrier wave component, it is possible to output the digital angle data φ corresponding to the pair of angle detection signals.

[0037] Furthermore, in the angle detection signal processing device according to the first embodiment, the phase lock unit 11 has a digital signal conversion unit 112 that converts the first signal from an analog signal to a digital signal. With this configuration, it is possible to output highly accurate digital angle data φ.

[0038] Furthermore, in the angle detection signal processing device according to the first embodiment, the selection by the feedback signal selection unit 118 and the selection by the rectification / non-rectification selection unit 115 are performed by the same operation selection signal. With this configuration, the configuration of the angle detection signal processing device can be simplified compared to when the selection by the feedback signal selection unit 118 and the selection by the rectification / non-rectification selection unit 115 are performed by different operation selection signals.

[0039] In the angle detection signal processing device according to the first embodiment, the synchronous detection unit 114 and the rectification / non-rectification selection unit 115 are arranged inside the phase lock unit 11. However, this configuration is not limiting. For example, the synchronous detection unit 114 and the rectification / non-rectification selection unit 115 may be arranged on the input side of the phase lock unit 11. In this case, the synchronous detection unit 114 rectifies each of the pair of angle detection signals using a rectification signal and outputs a pair of rectified angle detection signals, which are the rectified pair of signals. The rectification / non-rectification selection unit 115 selects and outputs the pair of angle detection signals or the pair of rectified angle detection signals. The pair of angle detection signals or the pair of rectified angle detection signals output from the rectification / non-rectification selection unit 115 are input to the phase lock unit 11. If the pair of angle detection signals are phase modulation signals, the rectification / non-rectification selection unit 115 selects and outputs the pair of angle detection signals. When the pair of angle detection signals are amplitude modulation signals, the rectification selection unit 115 selects and outputs the pair of rectified angle detection signals, and outputs the reference signal ω R t is used. When the pair of angle detection signals do not contain a carrier wave component, the rectification selection unit 115 selects and outputs a pair of rectified angle detection signals, and a preset fixed value is used as the rectification signal. With this configuration, regardless of whether the pair of angle detection signals output from the angle detection device 2 are phase modulation signals, amplitude modulation signals, or signals not containing a carrier wave component, it is possible to output digital angle data φ corresponding to the pair of angle detection signals.

[0040] Furthermore, when the synchronous detection unit 114 and the rectification selection unit 115 are arranged on the input side of the phase lock unit 11, the phase lock unit 11 may have a digital signal conversion unit 112 that converts the control deviation signal from an analog signal to a digital signal. Even with this configuration, it is possible to output highly accurate digital angle data φ.

[0041] Furthermore, when the synchronous detection unit 114 and the rectification selection unit 115 are arranged on the input side of the phase lock unit 11, the angle detection signal processing device may be configured to include a digital signal conversion unit provided on the input side of the phase lock unit 11. In this case, the digital signal conversion unit converts the pair of angle detection signals from analog signals to digital signals. Even with this configuration, it is possible to output highly accurate digital angle data φ.

[0042] Although the angle detection signal processing devices according to the preferred embodiments have been described above, the present invention is not limited to the angle detection signal processing devices according to the above-described embodiments. Various modifications and conversions can be made to the angle detection signal processing devices according to the above-described embodiments without departing from the scope of the claims. [Explanation of symbols]

[0043] 1 Angle detection signal processing device, 2 Angle detection device, 3 Excitation circuit, 4 Reference signal generation unit, 11 Phase lock unit, 111 Signal processing unit, 112 Digital signal conversion unit, 113 Inversion unit, 114 Synchronous detection unit, 115 Rectification selection unit, 116 Control law, 117 Integration unit, 118 Feedback signal selection unit, 119 Signal conversion unit.

Claims

1. An angle detection signal processing device that receives a pair of angle detection signals output from an angle detection device (2), controls the feedback signal so that a control deviation signal obtained based on the pair of angle detection signals and a feedback signal becomes zero, and outputs digital angle data, A phase lock unit (11) is provided, The phase lock unit (11) a feedback signal selection unit (118) that selects, as the feedback signal, the digital angle data or an offset signal obtained by offsetting the digital angle data from a reference signal; a signal processing unit (111) that multiplies a sine wave signal and a cosine wave signal corresponding to the feedback signal by the pair of angle detection signals in a corresponding manner, and outputs a signal that is a difference between the multiplied values ​​as a first signal; a synchronous detection unit (114) that rectifies the first signal using a rectification signal and outputs the rectified signal as a second signal; a rectification selection unit (115) that selects the first signal or the second signal as the control deviation signal; and When the pair of angle detection signals are phase modulation signals, the feedback signal selection unit (118) selects the offset signal as the feedback signal, and the rectification selection unit (115) selects the first signal as the control deviation signal, When the pair of angle detection signals are amplitude modulation signals, the feedback signal selection unit (118) selects the digital angle data as the feedback signal, the rectification selection unit (115) selects the second signal as the control deviation signal, and an excitation signal generated from the reference signal is used as the rectification signal, When the pair of angle detection signals are signals that do not contain a carrier wave component, the feedback signal selection unit (118) selects the digital angle data as the feedback signal, the rectification selection unit (115) selects the second signal as the control deviation signal, and a preset fixed value is used as the rectification signal.

2. 2. The angle detection signal processing device according to claim 1, wherein the phase lock unit (11) has a digital signal conversion unit (112) that converts the first signal from an analog signal to a digital signal.

3. 2. The angle detection signal processing device according to claim 1, further comprising a digital signal conversion unit that is provided on the input side of the phase lock unit (11) and converts the pair of angle detection signals from analog signals to digital signals.

4. An angle detection signal processing device that receives a pair of angle detection signals output from an angle detection device (2), controls the feedback signal so that a control deviation signal obtained based on the pair of angle detection signals and a feedback signal becomes zero, and outputs digital angle data, a synchronous detection unit (114) that rectifies each of the pair of angle detection signals using a rectification signal and outputs a pair of rectified angle detection signals, which are the pair of rectified signals; a rectification selection unit (115) that selects and outputs the pair of angle detection signals or the pair of rectified angle detection signals; a phase lock unit (11) to which the pair of angle detection signals or the pair of rectified angle detection signals output from the rectification / non-rectification selection unit (115) are input; Equipped with The phase lock unit (11) a feedback signal selection unit (118) that selects, as the feedback signal, the digital angle data or an offset signal obtained by offsetting the digital angle data from a reference signal; a signal processing unit (111) that multiplies a sine wave signal and a cosine wave signal corresponding to the feedback signal by the pair of angle detection signals or the pair of rectified angle detection signals in a corresponding manner, and outputs a signal representing the difference between the multiplied values ​​as the control deviation signal; and When the pair of angle detection signals are phase modulation signals, the feedback signal selection unit (118) selects the offset signal as the feedback signal, and the rectification selection unit (115) selects and outputs the pair of angle detection signals, When the pair of angle detection signals are amplitude modulation signals, the feedback signal selection unit (118) selects the digital angle data as the feedback signal, the rectification selection unit (115) selects and outputs the pair of rectified angle detection signals, and an excitation signal generated from the reference signal is used as the rectification signal, When the pair of angle detection signals are signals that do not contain a carrier wave component, the feedback signal selection unit (118) selects the digital angle data as the feedback signal, the rectification selection unit (115) selects and outputs the pair of rectified angle detection signals, and a preset fixed value is used as the rectification signal.

5. 5. The angle detection signal processing device according to claim 4, wherein the phase lock unit (11) has a digital signal conversion unit (112) that converts the control deviation signal from an analog signal to a digital signal.

6. 5. The angle detection signal processing device according to claim 4, further comprising a digital signal conversion unit provided on the input side of the phase lock unit (11) for converting the pair of angle detection signals from analog signals to digital signals.

7. 5. The angle detection signal processing device according to claim 1, wherein the selection by the feedback signal selection unit (118) and the selection by the rectification / non-rectification selection unit (115) are performed by the same operation selection signal.

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