322 lines
9.1 KiB
C
322 lines
9.1 KiB
C
/****************************************************************************
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* apps/industry/foc/fixed16/foc_svm3.c
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* This file implements 3-phase space vector modulation for fixed16
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <assert.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "industry/foc/fixed16/foc_handler.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#if CONFIG_MOTOR_FOC_PHASES != 3
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# error
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#endif
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/* Enable current samples correction if 3-shunts */
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#if CONFIG_MOTOR_FOC_SHUNTS == 3
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# define FOC_CORRECT_CURRENT_SAMPLES 1
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#endif
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/* SVM3 data */
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struct foc_svm3mod_b16_s
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{
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struct foc_mod_cfg_b16_s cfg;
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struct svm3_state_b16_s state;
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static int foc_modulation_init_b16(FAR foc_handler_b16_t *h);
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static void foc_modulation_deinit_b16(FAR foc_handler_b16_t *h);
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static void foc_modulation_cfg_b16(FAR foc_handler_b16_t *h, FAR void *cfg);
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static void foc_modulation_current_b16(FAR foc_handler_b16_t *h,
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FAR b16_t *curr);
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static void foc_modulation_vbase_get_b16(FAR foc_handler_b16_t *h,
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b16_t vbus,
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FAR b16_t *vbase);
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static void foc_modulation_run_b16(FAR foc_handler_b16_t *h,
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FAR ab_frame_b16_t *v_ab_mod,
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FAR b16_t *duty);
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static void foc_modulation_state_b16(FAR foc_handler_b16_t *h,
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FAR void *v_priv);
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* FOC modulation fixed16 interface */
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struct foc_modulation_ops_b16_s g_foc_mod_svm3_b16 =
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{
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.init = foc_modulation_init_b16,
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.deinit = foc_modulation_deinit_b16,
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.cfg = foc_modulation_cfg_b16,
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.current = foc_modulation_current_b16,
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.vbase_get = foc_modulation_vbase_get_b16,
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.run = foc_modulation_run_b16,
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.state_get = foc_modulation_state_b16,
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: foc_modulation_init_b16
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*
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* Description:
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* Initialize the SVM3 modulation (fixed16)
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*
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* Input Parameter:
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* h - pointer to FOC handler
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*
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****************************************************************************/
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static int foc_modulation_init_b16(FAR foc_handler_b16_t *h)
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{
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int ret = OK;
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DEBUGASSERT(h);
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/* Connect modulation data */
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h->modulation = zalloc(sizeof(struct foc_svm3mod_b16_s));
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if (h->modulation == NULL)
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{
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ret = -ENOMEM;
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goto errout;
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}
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errout:
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return ret;
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}
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/****************************************************************************
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* Name: foc_modulation_deinit_b16
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*
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* Description:
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* Deinitialize the SVM3 modulation (fixed16)
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*
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* Input Parameter:
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* h - pointer to FOC handler
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*
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****************************************************************************/
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static void foc_modulation_deinit_b16(FAR foc_handler_b16_t *h)
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{
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DEBUGASSERT(h);
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/* Free modulation data */
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if (h->modulation)
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{
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free(h->modulation);
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}
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}
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/****************************************************************************
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* Name: foc_modulation_cfg_b16
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*
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* Description:
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* Configure the SVM3 modulation (fixed16)
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*
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* Input Parameter:
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* h - pointer to FOC handler
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* cfg - pointer to modulation configuration data
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* (struct foc_svm3mod_b16_s)
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*
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****************************************************************************/
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static void foc_modulation_cfg_b16(FAR foc_handler_b16_t *h, FAR void *cfg)
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{
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FAR struct foc_svm3mod_b16_s *svm = NULL;
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DEBUGASSERT(h);
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DEBUGASSERT(cfg);
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/* Get modulation data */
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DEBUGASSERT(h->modulation);
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svm = h->modulation;
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/* Copy data */
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memcpy(&svm->cfg, cfg, sizeof(struct foc_mod_cfg_b16_s));
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/* Initialize SVM3 data */
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svm3_init_b16(&svm->state);
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}
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/****************************************************************************
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* Name: foc_modulation_vbase_get_b16
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*
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* Description:
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* Get the modulation base voltage (fixed16)
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*
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* Input Parameter:
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* h - pointer to FOC handler
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* vbus - bus voltage
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* vbase - (out) pointer to base voltage from modulation
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*
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****************************************************************************/
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static void foc_modulation_vbase_get_b16(FAR foc_handler_b16_t *h,
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b16_t vbus,
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FAR b16_t *vbase)
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{
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DEBUGASSERT(h);
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DEBUGASSERT(vbus);
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DEBUGASSERT(vbase);
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/* Get maximum possible base voltage */
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*vbase = SVM3_BASE_VOLTAGE_GET_B16(vbus);
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}
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/****************************************************************************
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* Name: foc_modulation_current_b16
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*
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* Description:
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* Correct current samples according to the SVM3 modulation state (fixed16)
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*
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* Input Parameter:
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* h - pointer to FOC handler
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* curr - (in/out) phase currents
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*
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****************************************************************************/
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static void foc_modulation_current_b16(FAR foc_handler_b16_t *h,
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FAR b16_t *curr)
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{
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#ifdef FOC_CORRECT_CURRENT_SAMPLES
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FAR struct foc_svm3mod_b16_s *svm = NULL;
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DEBUGASSERT(h);
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DEBUGASSERT(curr);
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/* Get modulation data */
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DEBUGASSERT(h->modulation);
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svm = h->modulation;
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/* Correct ADC current samples */
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svm3_current_correct_b16(&svm->state,
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&curr[0],
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&curr[1],
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&curr[2]);
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#endif
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}
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/****************************************************************************
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* Name: foc_modulation_run_b16
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*
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* Description:
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* Handle the SVM3 modulation (fixed16)
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*
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* Input Parameter:
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* h - pointer to FOC handler
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* v_ab_mod - requested modulation voltage scaled to 0.0-1.0 range
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* duty - (out) duty cycle for switches
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*
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****************************************************************************/
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static void foc_modulation_run_b16(FAR foc_handler_b16_t *h,
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FAR ab_frame_b16_t *v_ab_mod,
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FAR b16_t *duty)
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{
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FAR struct foc_svm3mod_b16_s *svm = NULL;
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DEBUGASSERT(h);
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DEBUGASSERT(v_ab_mod);
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DEBUGASSERT(duty);
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/* Get modulation data */
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DEBUGASSERT(h->modulation);
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svm = h->modulation;
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/* Call 3-phase space vector modulation */
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svm3_b16(&svm->state, v_ab_mod);
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/* Copy duty cycle */
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duty[0] = svm->state.d_u;
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duty[1] = svm->state.d_v;
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duty[2] = svm->state.d_w;
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/* Saturate duty cycle */
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f_saturate_b16(&duty[0], 0, svm->cfg.pwm_duty_max);
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f_saturate_b16(&duty[1], 0, svm->cfg.pwm_duty_max);
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f_saturate_b16(&duty[2], 0, svm->cfg.pwm_duty_max);
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}
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/****************************************************************************
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* Name: foc_modulation_state_b16
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*
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* Description:
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* Get the SVM3 modulation state (fixed16)
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*
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* Input Parameter:
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* h - pointer to FOC handler
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* state - pointer to modulation specific data
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*
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****************************************************************************/
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static void foc_modulation_state_b16(FAR foc_handler_b16_t *h,
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FAR void *state)
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{
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FAR struct foc_svm3mod_b16_s *svm = NULL;
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DEBUGASSERT(h);
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DEBUGASSERT(state);
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/* Get modulation data */
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DEBUGASSERT(h->modulation);
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svm = h->modulation;
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/* Copy data */
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memcpy(state, &svm->state, sizeof(struct svm3_state_b16_s));
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}
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